EPSON
EPSON


M-190G

Micro DOT Printer


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micro dot printer
M-190G
Specification
Rev. No.
Notes
STANDARD
C
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,,
SEIKO EPSON CORPORATION
MATSUMOTO MINAMI PLANT
2070 KOTOBUKI KOAKA, MATSUMOTO-SHI, NAGANO, 399-8702 JAPAN
PHONE(0263)86-5353 FAX(0263)86-9923
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REVISION SHEET
The table below indicates which pages in this specification have been revised.
Before reading this specification, be sure you have the correct version of each page.
Sheet 1 of 2
Revisions
Design Section
Sheet Rev. No.
Rev. Document
WRT
CHK
APL Sheet Rev. Sheet Rev. Sheet Rev.
A Enactment
Takeuchi
--
Arai I C 20 C
B Change
C Change
Aoki
Narita
Arai
II C 21 C
III C 22 C
IV C 23 C
V C 24 C
25 C
1 C 26 C
2 C 27 C
3 C 28 C
4 C 29 C
5 C 30 C
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7
C 31 C
C 32 C
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8C
9C
10 C App.1 C
11 C App.2 C
12 C
13 C
14 C
15 C
16 C
17 C
18 C
TITLE
M-190G
Specification
(STANDARD)
19 C
Front Part
Rev.
General Table of
Cover Sheet Scope Description Contents Contents Appendix
Total
1 2 --
4
1 32
2 42
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REV.
B
C
SHEET
2
4
28
All
III
1, 3, 5,
8, 32,
App.2
14
15
31
REVISION SHEET
CHANGED CONTENTS
1.5 Reliability
NOTES: Section 2.14.1 Section 2.14
1.13 Factory options
ERC-22(purple), ERC-09(purple) ERC-22, ERC-09
2.13 Overall Dimensions
All pages are revised due to add “Confidential” to the header.
Units are applied for SI unit system
sec s, line/sec lps [lps: lines per second], G m/s2
“Confidentiality Agreement”
Ribbon cassette ERC-40
Sheet 2 of 2
[Correction]
[Change]
[Change]
[added]
[added]
2.5.1 Electrical Characteristics
1) Electrical Characteristics of Timing Detector Open Collector Output:
Typical: 0.12 V, Maximum 0.4 V Typical: 0.3 V, Maximum 0.5 V
Absolute maximum rating 8 mA
Absolute maximum rating 8 mA (Recommended: 2 mA)
Termas: Vcc = 5 V, IOL = 8 mA Vcc = 5 V, IOL = 5 mA
2) Printer Timing Detector Circuit
Circuit of the printer side
[changed]
3) Waveform Shaping Circuit on the Designer’s Side
The designer needs to shape the printer timing detector signal with the integrator
circuit (providedDbaytathSehdeeest4igUn.ecro:mTime constant at the leading edge 5.7 µs, Time DataShee
constant at the trailing edge 4.7 µs) and …
The designer needs to shape the printer timing detector signal with the integrator
circuit (provided by the designer: Time constant at the leading edge 12.7 µs,
Time constant at the trailing edge 10 µs) and …
2.13 Overall Dimensions
[changed]
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Points You Must Observe To Assure Product Safety
In order to assure the safe operation of this product, carefully observe the specifications as
well as the notes provided below.
Seiko Epson Corporation will not bear any responsibility for any damage or injuries arising
from use of this product that is not in accordance with the specifications and the notes
provided below.
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Notes on Printer Control
1. Absolute maximum voltage
1) Printer voltage: 5.8 VDC or less
(Apply to the print solenoid, motor, trigger solenoid, for fast paper feeding and detectors.)
2. The conditions setting forth the maximum time power can be applied (and the maximum voltage that
can be applied) to electronic components such as the motor, and magnets must be observed.
If the maximum time power can be applied (or the maximum voltage that can be applied) is exceeded,
the components mentioned above could overheat and start a fire or begin to smoke.
1) Motor
The motor is DC brush motors which can be short-circuited and must there fore be protected
using a fuse that is properly matched to the power supply.
2) Print Solenoid
Under any condition (incluDdaintagSshoeftewt4aUre.croumnaway), the maximum power-on time may not
exceed 1 second.
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3) Fast Trigger Solenoid
Under any condition (including software runaway), the maximum power-on time may not
exceed 5 seconds.
4) All Detectors (Sensors and Switches)
All detectors must protect the circuitry so that current never exceeds the maximum standard.
Notes on Handling
The case must be designed so that movable parts such as gears, etc., are not exposed.
Touching moving parts could cause a laceration or other injury.
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Explanation of Voltage Terminoloty
In previous specifications for out printers, M-180, M-190, and so on, we identified a usable voltage as
“terminal voltage”; however from this specification for the M-192G on, we will call a usable voltage
“power supply voltage” and also provide voltage ranges, including loss of power supply, voltage when
energizing, and voltage loss from driver and circuit lines.
This is because the previous term, “terminal voltage”, caused confusion between voltage at the
terminals and the power supply voltage.
If the voltage at the terminals is not within specifications, there is a risk that the drivers will not be driven
properly. That’s why we changed it to an expression that could not be misunderstood. Therefore,
this change in terminology doesn’t require a change in the power supply used for M-190 series.
Explanation of Power Supply Voltage
M-190G power supply voltage 5 ± 0.5 V
(when a stabilized power supply is used);
5 +0.8/-0.5 V (when a Ni-Cd battery is used)
The voltage loss in each terminal, even during sending of current to print solenoids, the voltage
loss in the power supply and loss from loss wiring resistance must be 0.8 V or less. Also, the
voltage loss in the driver circuitry (driver saturation voltage) must be 0.4 V or less.
Compared to this, the specification for the M-190 provides that:
M-190 terminal voltage
4.8 +0.4/-1.5 V (when a stabilized power supply is used);
4.8 +0.7/-1.5 V (when a Ni-Cd battery is used)
These values are defined as assumed the following conditions:
M-190 power supply voltage
5 ± 0.5 V
(when a stabilized power supply is used);
5 +0.8/-0.5 V (when a Ni-Cd battery is used)
The total for the power supplyDvaotlataSgheeleots4sUp.cluosmthe voltage loss from resistance in the wiring plusDataShee
the voltage loss in the driver circuit must be within 1.2 V. (0.8 V + 0.4 V = 1.2 V)
Therefore, the lowest permissible voltage from the driver circuit when energizing is 3.3 V.
([4.5 V - 0.8 V = 3.7 V] - 0.4 V = 3.3 V.)
Also, in either printer mechanism, at the typical print speed, a motor terminal voltage is assumed to be
4.8 V. However, this is obtained by estimating that the voltage loss in the motor terminal during
continuous printing is am average of 0.2 V.
Therefore, there is no substantial terminal difference in the usable ranges of power supply and terminal
voltages between M-190G and M-190.
In either mechanism, the maximum value of the voltage when a Ni-Cd battery is used is 0.3 V above
the 5.5 V maximum when a stabilized power supply is used. This maximum value allows for the
high-voltage situation that occurs temporarily when the Ni-Cd battery is fully charged. This value is not
guaranteed for continuous use.
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CONFIDENTIALITY AGREEMENT
BY USING THIS DOCUMENT, YOU AGREE TO ABIDE BY THE TERMS OF THIS AGREEMENT. PLEASE
RETURN THIS DOCUMENT IMMEDIATELY IF YOU DO NOT AGREE TO THESE TERMS.
1. This document contains confidential, proprietary information of Seiko Epson Corporation or its affiliates.
You must keep such information confidential. If the user is a business entity or organization, you must
limit disclosure to your employees, agents, and contractors who have a need to know and who are also
bound by obligations of confidentiality.
2. On the earlier of (a) termination of your relationship with Seiko Epson, or (b) Seiko Epson's request, you
must stop using the confidential information. You must then return or destroy the information, as
directed by Seiko Epson.
3. If a court, arbitrator, government agency, or the like orders you to disclose any confidential information,
you must immediately notify Seiko Epson. You agree to give Seiko Epson reasonable cooperation and
assistance in the negotiation.
4. You may use confidential information only for the purpose of operating or servicing the products to which
the document relates, unless you obtain the prior written consent of Seiko Epson for some other use.
5. Seiko Epson warrants that it has the right to disclose the confidential information. SEIKO EPSON
MAKES NO OTHER WARRANTIES CONCERNING THE CONFIDENTIAL INFORMATION OR ANY
OTHER INFORMATION IN THE DOCUMENT, INCLUDING (WITHOUT LIMITATION) ANY
WARRANTY OF TITLE OR NON-INFRINGEMENT. Seiko Epson has no liability for loss or damage
arising from or relating to your use of or reliance on the information in the document.
6. You may not reproduce, store, or transmit the confidential information in any form or by any means
(electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of
Seiko Epson.
7. Your obligations under this Agreement are in addition to any other legal obligations. Seiko Epson does
not waive any right under this Agreement by failing to exercise it. The laws of Japan apply to this
Agreement.
Cautions
1. This document shall apply only to the product(s) identified herein.
2. Nbyoapnayrtmoef athniss,deoleccutmroennict ,mmaeycbheanrDeicapatralo,Sdphuhecoeetodt4c,Uospt.ocyorinemgd,inreacorredtriniegv,aolrsoysthteemrw,isoer,trwainthsomuittttehdeipnraionrywforirttmenoDrataShee
permission of Seiko Epson Corporation.
3. The contents of this document are subject to change without notice. Please contact us for the latest
information.
4. While every precaution has been taken in the preparation of this document, Seiko Epson Corporation
assumes no responsibility for errors or omissions.
5. Neither is any liability assumed for damages resulting from the use of the information contained herein.
6. Neither Seiko Epson Corporation nor its affiliates shall be liable to the purchaser of this product or third
parties for damages, losses, costs, or expenses incurred by the purchaser or third parties as a result
of: accident, misuse, or abuse of this product or unauthorized modifications, repairs, or alterations to
this product, or (excluding the U.S.) failure to strictly comply with Seiko Epson Corporation's operating
and maintenance instructions.
7. Seiko Epson Corporation shall not be liable against any damages or problems arising from the use of
any options or any consumable products other than those designated as Original EPSON Products or
EPSON Approved Products by Seiko Epson Corporation.
Trademarks
EPSON® is a registered trademark of Seiko Epson Corporation.
General Notice: Other product and company names used herein are for identification purposes only and may
be trademarks of their respective companies.
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General Description
The M-190G is a mechanical dot printer with a print head consisting of 8 print solenoids arranged in a
horizontal line. The print head moves horizontally to print each dot line.
The print head which moves horizontal and performs uni-directional printing as each print solenoid is
energized in order.
Paper is automatically fed one pitch when the print head returns. The desired print format is
obtained by repeating this operation.
The M-190G has the following features:
1. Clear print quality from the impact dot printing system.
2. Ultra compact, light weight, and high reliability.
3. Can be driven using Ni-Cd batteries
4. Possible to copy (Original 1 sheet + 1 copy sheet)
5. Fast paper feed and paper release mechanism.
6. Graphic characters can be printed.
7. Use Ribbon Cassette for M-190
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Table of Contents
1. GENERAL SPECIFICATIONS............................................................................................................. 1
1.1 Print Method .................................................................................................................................. 1
1.2 Printing Speed............................................................................................................................... 1
1.3 Inking............................................................................................................................................. 1
1.4 Print Format................................................................................................................................... 1
1.5 Character Size............................................................................................................................... 1
1.6 Coping Capability .......................................................................................................................... 1
1.7 Paper Feeding Specification ......................................................................................................... 1
1.8 Paper Specifications...................................................................................................................... 2
1.9 Power Supply Voltage ................................................................................................................... 2
1.10 Reliability ..................................................................................................................................... 2
1.11 Environmental Conditions ........................................................................................................... 3
1.12 Environmental Conditions for Storage......................................................................................... 4
1.13 Connection .................................................................................................................................. 5
1.14 Insulation Resistance .................................................................................................................. 5
1.15 Overall Dimensions ..................................................................................................................... 5
1.16 Mass............................................................................................................................................ 5
1.17 Acceptable for TSCA................................................................................................................... 5
1.18 Factory Options ........................................................................................................................... 5
2. DETAILED SPECIFICATIONS ............................................................................................................ 6
2.1 Print Specifications........................................................................................................................ 6
2.2 Paper Feeding............................................................................................................................... 7
2.3 Ribbon Cassette............................................................................................................................ 8
2.4 Paper............................................................................................................................................. 9
2.5 Printer Control Signal .................................................................................................................. 14
2.6 Motor ........................................................................................................................................... 20
2.7 Print Solenoids ..........................D...a..t.a..S..h..e..e..t.4..U.....c..o..m....................................................................... 21
2.8 Fast Paper Feed Trigger Solenoid .............................................................................................. 23
2.9 Detection of Abnormal Printer Conditions ................................................................................... 24
2.10 Maximum Allowable Continuous Energizing Time .................................................................... 24
2.11 Terminal Assignment ................................................................................................................ 25
2.12 Timing Chart.............................................................................................................................. 26
2.13 Overall Dimensions ................................................................................................................... 31
2.14 Life / MCBF Confirmation Conditions ........................................................................................ 32
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APPENDIX........................................................................................................................................ App.1
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1. GENERAL SPECIFICATIONS
1.1 Print Method
Impact dot matrix printer (8 print solenoids)
1.2 Printing Speed
1) 1 line printing:
2) 1 dot line:
2.7 lps ± 20% (typical)
(5 × 7 font + 3-dot line spacing)
(Motor terminal voltage at 4.8 VDC constant, 25°C{77°F}, continuous
printing)
21.6 dot lps ± 20% (typical)
(Motor terminal voltage at 4.8 VDC constant, 25°C{77°F}, continuous
printing)
[lps: lines per second]
1.3 Inking
Ribbon cassette
Possible to use ERC-22, ERC-09, ERC-40
1.4 Print Format
1) Total number of dots:
2) Number of columns :
Maximum 144 dots/dot line
Maximum 24 (5 × 7 font and 1 dot column space)
(3 columns/print solenoid ×8)
1.5 Character Size
1) Dot pitch:
2) 5 × 7 font:
1.6 Coping Capability
Horizontal: 0.33 mm; Vertical: 0.37 mm {0.013"; 0.015"}
1.7 mm (W) × 2.6 mm (H) {0.067"×0.102"}
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1 original + 1 copy
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1.7 Paper Feeding Specification
1) Feeding method:
Friction method
Paper is automatically fed every dot line.
Possible to feed paper with a trigger solenoid for fast paper feeding.
With paper release mechanism
2) Paper feeding pitch:
When feeding automatically: 1-dot line pitch (0.37 mm {0.015"})
During fast feeding:
3-dot line pitch (1.11 mm {0.044"})
3) Fast paper feeding speed
6.5 lps ± 20%
(Motor terminal voltage at 4.8 VDC constant, 25°C{77°F}, continuous
printing) [lps: lines per second]
NOTE: Motor terminal voltage is potential difference between + (plus) and - (minus) terminals on PCB
when the motor is energized.
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1.8 Paper Specifications
1) Paper type:
2) Size
Single-ply paper roll or Two-ply pressure-sensitive paper
(Paper roll type or cut sheet type)
Width: 57.5 ± 0.5 mm {2.26" ± 0.02"}
1.9 Power Supply Voltage
1) Printer Driving Voltage
5.0 +0.8/-0.5 VDC (Ni-Cd battery, nominal voltage 4.8V)
5.0 ±0.5 VDC
(when stabilized power supply is used)
NOTES:
Can be applied to motor, print solenoid, and fast paper feed trigger solenoid
Use the same power supply.
In all printing pattern used, even during sending of current to print solenoids, the
voltage drop by the power supply voltage and from wiring resistance must be 0.8 V or
less. Also, voltage loss in the driver circuitry (driver saturation voltage) must be 0.4 V
or less.
2) Detector Input Voltage
5.0 +0.8/-1.7 VDC
NOTES: Can be applied to reset detector, timing detector.
Can be used with the same printer driver power supply.
1.10 Reliability
MCBF:
Printer life:
1,500,000 lines (including print solenoid)
2,250,000 lines
NOTES: See Section 2.14 for confirmation conditions of reliability.
End of life is definedDasattahSehpeoeint4tUa.tcwohmich the print head, motor unit, or cam trigger set isDataShee
worn out.
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1.11 Environmental Conditions
1) Operating ambient temperature:
a) Using with the ERC-22
b) Using with the ERC-09
c) Using with the ERC-40
-10° to 50°C {14° to 122°F}
(The assured temperature for printing is 0° to 50°C {32° to 122°F}
0° to 50°C {32° to 122°F}
-10° to 50°C {14° to 122°F}
(The assured temperature for printing is 0° to 50°C {32° to 122°F}
2) Operating ambient humidity:
10 to 90% RH (non-condensing)
See Figure 1.11.1.
When using with the ERC-22
When using with the ERC-09
90
34°C {93°F}, 90%
Operation range
35
40°C {104°F}, 64.9%
50°C {122°F}, 35%
10
-10
0 DataSheet4U.co3m4
50
Environmental temperature (°C)
Figure 1.11.1
When using with the ERC-40
90 38°C {100°F}, 90%
80
40°C {104°F}, 80%
Operation range
48
50°C {122°F}, 48%
DataShee
10
-10 0
38 50
Environmental temperature (°C)
Figure 1.11.2
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3) Vibration resistance:
Frequency:
10 150 10 Hz
Sweep:
20 minutes for coming and returning
Acceleration:
(One hour for each direction)
Approximately 4.9 m/s2 {0.5 G}
(X, Y, and Z directions)
Center of vibration: Any mechanism installed part
EPSON confirmed that no unexpected conditions will occur in operation of the mechanism after
vibration under the above conditions.
1.12 Environmental Conditions for Storage
1) Storage at high temperatures and high humidity:
Temperature:
50°C {122°F}
Humidity:
90% RH
Total time:
240 hours
EPSON confirmed that no unexpected conditions will occur in operation of the mechanism at 25°C
{77°F}, 60% RH after being left for two hours past storage in the above conditions.
2) Storage at high temperatures:
Temperature:
70°C {158°F}
Total time:
240 hours
EPSON confirmed that no unexpected conditions will occur in operation of the mechanism at 25°C
{77°F} after being left for two hours past storage in the above conditions.
3) Storage at low temperatures:
Temperature:
-25°C {-13°F}
Total time:
240 hours
Epson confirmed that no unexpected conditions will occur in operation of the mechanism at 25°C
{77°F} after being left for two hours past storage in the above conditions.
4) Vibration resistance:
DataFSrheeqeute4nUc.yc:om
10 - 150 - 10 Hz
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Sweep:
20 minutes for coming and returning
Acceleration:
(One hour for each direction)
Approximately 19.8 m/s2 {2 G}
(X, Y, and Z directions)
Center of vibration: Any mechanism installed part
Epson confirmed that no unexpected conditions will occur in operation of the mechanism after
vibration under the above conditions.
5) Impact resistance:
Impact acceleration: Approximately 980 m/s2 {100 G}
Total operation time: 6 ms
Direction:
3 times each for X, Y, and Z directions
Impact operation point: Any mechanism installed part
Epson confirmed that no unexpected conditions will occur in operation of the mechanism after
impact under the above conditions.
NOTE: Refer to the specification for each ribbon cassette individually for the environmental conditions
for storage of usable ribbon cassettes.
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1.13 Connection
1) Printer side:
2) Circuit side:
1.14 Insulation Resistance
1.15 Overall Dimensions
1.16 Mass
1.17 Acceptable for TSCA
1.18 Factory Options
Manual feed knob
Ribbon cassette
PCB fixed to the frame (with 2.5 mm {0.098"} pitch copper pattern)
Flat cables or lead wires
1 Mor more at initial (100 VDC)
See 2.13 Overall Dimensions
Approximately 100 g {0.23 lb} except ribbon cassette
All EPSON ink ribbons, grease and oil which are used for this printer
meet acceptable standard for TSCA (Toxic Substance Control Act).
Horizontal type Outside diameter: 20 mm {0.79"}
ERC-22, ERC-09, ERC-40
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2. DETAILED SPECIFICATIONS
2.1 Print Specifications
2.1.1 Print area
The print head consists of 8 print solenoids (A, B, C, D, E, F, G, and H) arranged in a horizontal line.
The print head moves from the left (from the standby position) to the right, printing at 18 positions as
each print solenoid is energized, so that one dot line is formed. The total number of dots per dot line is
144 (18 positions × 8 solenoids).
Paper feeding direction
Print solenoid
ABCDE FGH
18dots 18dots 18dots 18dots 18dots 18dots 18dots 18dots
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5.2 +2.2/-2.8mm
Print area 18×8=144dots
(47.2mm)
Center of
dot 57.5 ± 0.5mm (Paper width)
Conditions: Room temperature and normal humidity. When paper is fed under normal
conditions, the paper edge should be not fold.
Figure 2.1.1
2.1.2 Print format (5 × 7 font with 1 dot for column space and 3 dots for line space)
18 positions are divided by three. Out of 6 dots, 5 dots are used for printing and 1 dot for column
space. By repeating this 7 times in the vertical direction (paper feed direction), a 5 × 7 font of 24
columns (3 columns × 8 solenoidsD) acatanSbheeeotb4tUai.nceodm.
(5 + 1) × 24 = 144 dots/dot line
column 1 2 3 4 5 6 7 8 9 101112 131415 161718 192021 222324
DataShee
print solenoid
A B C D E F GH
Figure 2.1.2
0.33 (Unit: mm)
(1.62)
(0.36)
1.98
(1.62)
NOTE: The values above are design values.
Therefore, dot blur is not being considered.
Figure 2.1.3
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2.2 Paper Feeding
1) When printing:
Paper is automatically fed one dot line pitch (0.37 mm, 0.015”) when
the print head returns.
2) Space feed
(a) One dot line pitch feeding: Same as when printing
(b) Fast feeding:
Paper is fed three dot line pitches when the print head goes back and
forth by driving the fast paper feed trigger solenoid.
3) Paper release mechanism:
Because of the way the paper release mechanism operates, paper
can be pulled out (straight forward or backward) by stopping the
motor quickly while satisfying the requirements given in Section
2.6.1).
NOTE: When the motor halts without satisfying the requirements given in
Section 2.6.1), the paper release mechanism won’t operate.
4) Manual feed knob (factory option):
Paper can be fed forward or backward by rotating the manual feed
knob when the printer is halted and the paper released.
NOTES: 1. If the paper release mechanism does not operate, paper cannot be fed backward with
the manual feed knob.
2. After the following operation, a paper feed pitch problem or paper feed not-straight
feeding problem may occur.
x When paper is cut.
y When paper is pulled out
z When touching the manual feed knob is held or touched in a way that impedes
rotation during printer operation.
{ When the forceDoaf taSkihnegeut4pUp.acpoemr by a take up device (provided by user) exceeds DataShee
1.0 N {approximately 100 gf}.
3. Nothing should touch or rub against the manual feed knob during printer operation.
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2.3 Ribbon Cassette
Three types of ribbon cassettes (ERC-22, ERC-09, ERC-40) can be used with the M-190G.
Product
Number
Size (mm)
Weight
Life
Color
ERC-22
ERC-09
ERC-40
90.9 (W) × 24.9 (D) × 6.3 (H) 90.9 (W) × 26.4 (D) × 7.0 (H)
(3.58" × 0.98" × 0.25")
(3.58" × 1.04" × 0.28")
Approx. 4.0 g (0.14 oz)
Approx. 3.5g (0.13 oz)
Purple: Approx. 1 million
characters
Black: Approx. 600,000
characters
Purple: Approx. 250,000
characters
Black: Approx. 200,000
characters
(Power supply voltage: 5.0 VDC, 25°C {77°F})
(Print mode is as shown in 2.14)
Purple or Black
90.9 (W) × 26.9 (D) × 6.3 (H)
(3.58" × 1.04" × 0.25")
Approx. 4.0 g (0.14 oz)
Purple: Approx. 2,000,000
characters
Purple
Refer to Ribbon Cassette Specifications for more detailed specifications.
Use only the specified ribbon cassettes. Otherwise, the quality, life, and other characteristics are
not guaranteed.
The ribbon cassette which is bundled in the printer when it is shipped from the factory may not
satisfy the life-time listed in the table above.
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2.4 Paper
2.4.1 1-ply paper roll
1) Type:
Normal paper
2) Size:
57.5 ± 0.5 mm (paper width) × 83 mm or less (outside diameter)
× 10 mm or more (inside diameter)
NOTES: Inside end of paper roll should meet the following conditions:
1. No fold is allowed. The paper must be wound so that the paper edge goes along the
internal circumference. (Refer to Figure 2.4.1)
2. No folding back is allowed.
3. Inside end must not be glued to the core. (when a core exists.)
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Inside end of
paper roll
3) Thickness:
4) Weight:
5) Others:
Correct
Incorrect
Figure 2.4.1
0.06 to 0.085 mm
52.3 to 64 g/m2 {13.9 to 17.0 lbs}
(45 to 55 Kg {20.41 to 24.94 lbs} / 1000 sheets
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/ 1091×788mm {42.95"×31.02"})
No gluing at either side of roll paper.
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2.4.2 2-ply pressure - sensitive paper (Recommended paper)
1) Type:
No-carbon paper (Mitsubishi Seishi)
N40: Upper sheet(Hi) + Lower sheet (Blue color printing)
2) Thickness:
3) Weight:
Upper sheet:
Lower sheet:
Upper sheet:
Lower sheet:
0.066 mm
0.058 mm
47.0 g/m2
47.0 g/m2
4) Printing method:
Upper sheet:
Lower sheet:
Print by ink ribbon
Copy with pressure-sensitive
(possible to print one sheet only)
5) Form for cut sheet type
a) Size:
57.5 ± 0.5 mm (paper width) × 300 mm or less (paper length)
b)Limitation for glued portion
x Glued portion:
See Figure 2.4.2
y Notes: 1.No past can ooze outside the portion beyond the wavy line in the figure.
2.Paper should be pasted evenly.
3.Glued portion must not harden.
4.Whether the printer is under operating or storage condition, glued sheets should
not peel off and paste must not run out (ooze out).
c) Filing hold position:
(See Figure 2.4.2)
x Dimension: Paper width “W”: 57.5 ± 0.5 mm
Dimension “A”: 30 mm or more
y A filing hole can be plaDceadtawSihtheient4thUe.caorema filled with oblique lines in the figure.
DataShee
z The first line must be printed 5 mm or more below the hole and 30 mm or more below the
top of the paper.
{ Nothing shall be printed within 15 mm from the end of the paper.
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glued portion
1.5 mm or less
Center
of paper
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End of paper
DataSheFeitg4uUr.eco2m.4.2
6) Form for paper roll type
a) Size:
57.5 ± 0.5 mm (paper width) × 83 mm or less (outside diameter)
× 10 mm or more (inside diameter)
Notes: 1. Conditions on inside end of roll paper (with or without a core)
x No fold is allowed. The paper must be wound so that the paper edge goes along the
internal circumference. (Refer to Figure 2.4.3)
y No folding back is allowed.
z Inside end must not be glued to the core (when a core exists).
{ Upper and lower papers must not be glued to each other.
DataShee
Upper paper
Upper
paper
Lower paper
Inside end of
paper roll
Lower
paper
Correct
Figure 2.4.3
Incorrect
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Notes: 2. Roll paper sag
When pressure sensitive roll paper is used, the difference in diameter between the upper
and lower papers generates an upper paper sag and, as seen from the side, the initial
circular shape of the paper roll is distorted to form an ellipse. The diameter of the ellipse
eventually becomes larger than the initial diameter of the roll. (See Figure 2.4.4)
The shape of the case around the roll paper holder should be designed so that it allows
some sag of the upper paper.
Besides this, when a paper take-up device is employed, be careful of its position to
prevent the upper paper sag from being taken up by the device.
Elliptical distortion due to the upper paper sag
Initial diameter of the paper roll
Lower
paper
Lower
paper
Upper
paper
Upper
paper
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a) Drop in type
b) Shaft-holding type
Figure 2.4.4
7) Others (common to cut sheet anDdatraoSll hpeaepte4rU):.com
a)Other characteristics
DataShee
Impact, friction, temperature, humidity, light, and oil contamination do affect the color and life
of no-carbon paper. This means that all these factors should be taken into account when
handling this type of paper. Discuss the details with the paper manufacturers.
b) Storage
Unused paper should be stored so as to avoid impact, friction, light, and oil, and should be
kept under adequate temperature and humidity conditions.
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2.4.3 Notes
1) Paper supply load:
The paper supply load at the paper entrance should be 0.3 N
{approximately 30 gf} or less.
2) Paper taking up
Follow the procedure below to take up the paper after printing.
x Paper should be took-up with a constant-torque method or equivalent.
y The paper holding force F should be 1.0 N {approximately 100 gf} or less.
(See Figure 2.4.5)
z The angle to take up the paper to the printer should be 45 degree or less.
(See Figure 2.4.5)
et4U.com
Printer
F = Max. 1.0 N {approximately 100 gf}
A = Max. 45 deg
Paper entrance
Figure 2.4.5
3) Other notes
x Paper with folds, wrinkles, or tears should not be used.
y Neither perforations nor holes can be positioned within the printable area.
z Paper should be pulledDoautat Sslhoewelyt4aUn.dcosmtraight-forwardly.
DataShee
{ When printing is stopped in the middle of a print job and the paper is reset after being pulled
out or moved, printing position and pitch cannot be guaranteed for subsequent printing.
| When loading the 2-ply pressure sensitive paper, be sure the upper and lower paper fit
correctly.
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2.5 Printer Control Signal
2.5.1 Timing Detector and Output Waveform Treatment
The timing detector is connected directly to the printer. It generates the timing detector output
waveform signal. The output waveforms are to be wave-shaped through a waveform shaping circuit
on the designer’s side and constitute Timing signal T by recognizing the change in waveform level.
Timing signal T is used as the pulse to control print solenoids and fast paper feed trigger solenoid.
1) Electrical Characteristics of Timing Detector Open Collector Output
Electrical Characteristics (Ta=25°C)
Output Low level output voltage
Characteristic Value
VOL Typical: 0.3 V
Maximum: 0.5 V
Low level output current IO
Absolute maximum rating 8mA
(Recommended: 2 mA)
Terms
Vcc = 5 V,
IOL = 5 mA
2) Printer Timing Detector Circuit, Names of Output Waveform, and the Waveform in Each Side
5V
Shaping
waveform
Detector
waveform
CPU
waveform
shaping circuit
10K
NJM2406
+
10K
Rf:270
confirming
signal
10K
DataSheet4U.GcoNmD
[User Side]
[Printer Side]
DataShee
NOTES:
1. When it detects, the detector goes on.
2. Waveforms in each side of the circuit are hereinafter referred to as “detector
waveform” and “shaping waveform.”
3. Recognized points in acknowledged work of CPU are hereinafter referred to as
“signals.”
4. It is desirable to connect capacitors ( 0.1µF or more) between +5V, and GND near
the printer connection part on the designer’s side in order to stabilize detector input
voltage.
Figure 2.5.1
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3) Waveform Shaping Circuit on the Designer’s Side
The designer needs to shape the printer timing detector signal with the integrator circuit (provided by
the designer: Time constant at the leading edge 12.7 µs, Time constant at the trailing edge 10 µs)
and to connect the signal to the input terminal of the schmitt trigger logic IC (74HC14 or equivalent).
The output of this logic is the shaped, timing waveforms.
The following explanation is for the shaped, timing waveforms which are output from this waveform
shaping circuit.
NOTE: The shaped reset waveforms output by the above waveform-shaping circuit are inverted in
relation to the sensor waveforms output by the printer (See Figure 2-5-2-(1))
4) About the Power Supply
It is desirable to turn the sensor power supply ON/OFF at the same time the motor is on.
(This stops the LED from flickering and helps to cut down power consumption waste in standby.
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2.5.2 Timing Signal T
1) Shaped timing waveforms
The shaped timing waveforms as output by the waveform-shaping circuits, which the designer
must create, are shown in Figure 2.5.2.
Timing sensor waveforms
(printer connector No.18)
Shaped timing waveforms
NOTE:
0.48ms. typical (power supply voltage 5.0V, 25°C {77°F})
min. 0.2ms
denotes a waveform output by the designer’s waveform-shaping circuit.
Figure 2.5.2
2) Confirmation of Timing signal T (noise elimination)
Timing signal T is defined by the leading edge of the shaped timing waveforms output by the
waveform shaping circuit. When an edge has been detected, the shaped timing waveforms
should be read again after 15 ± 5 µs. If both results are equal, Timing signal T is established.
the results are not equal, the pulse should be treated as noise and disregarded.
If
Shaped timing waveform
Read timing
DataSheet4U.com
15 ± 5 µs
15 ± 5 µs
Confirmation of timing
signal T
Timing signal Tn
Timing signal Tn+1
NOTE:
denotes a waveform output by the designer’s waveform shaping circuit.
Figure 2.5.3
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2.5.3 Reset Detector and Output Waveform Treatment
The printer mechanism has a built-in reset detector that outputs a waveform once for each dot line.
To obtain Reset signal R, the designer needs to shape the waveform which is output from the reset
detector of the printer and to recognize the change of the waveform level.
Reset signal R is used to reset the counting of Timing signal T for each character or graphics.
NOTE: For example, in printing a printing cycle of one character line (of. 5 × 7 font) or a printing cycle
of a bit image, Reset signal R is used only when the first Timing signal T in dot line 1 is
confirmed. Resetting of the counting of Timing signal T is not performed until one character
line or each printing cycle of a bit image is completed.
1) Electric Characteristics of Reset Detectors (Ta = 25°C{77°F})
Item
Input
Output
Transfer
characteristic
forward voltage
dark current
photo-electric current
saturation voltage
between the collector
and the emitter.
Symbol Terms
VF IF=20mA
ICEO
VCE=20V
IC IF=5mA,
VCE=5V
VCE(sat) IF=10mA,
IC=40µs
Mix.
value
--
--
100
--
standard Max.
value
value
1.2 1.4
-- 0.1
-- 400
-- 0.4
Unit
V
µA
µA
V
2) Printer Reset Detector Circuit and Names of Output Waveforms and Waveform on Each Side
5V
DataSheet4U.com
shaping waveform
detector
Rf:270
CPU
waveform
shaping circuit
DataShee
confirming signal
[ Designer’s side ]
GND
[ Printer side ]
NOTES: 1. When it detects, the detector goes on.
2. Waveforms in each side of the circuit are hereinafter referred to as “detector
waveform” and “shaping waveform”.
3. Confirmed points in acknowledged work of CPU are hereinafter referred to as
“signals”.
4. It is desirable to connect capacitors (0.1 µF or more) between +5 V and GND near the
printer connection part on the designer’s side in order to stabilize detector input
voltage.
Figure 2.5.4
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3) Waveform shaping circuit on the designer’s side
The designer needs to pull-up the waveform output + terminal of the reset detector at 51 kΩ ± 5%.
The designer is also required to install a capacitor (0.001 µF) between GND and the waveform output
terminal and to connect the signal to the input terminal of the schmitt trigger logic IC (74HC14 or
equivalent). The output of this logic is the shaped, reset waveforms.
The following explanation is for the shaped, reset waveforms which are output from this waveform
shaping circuit.
NOTE: The shaped reset waveforms output by the above waveform-shaping circuit are inverted in
relation to the sensor waveforms output by the printer (See Figure 2.5.5).
4) About the power supply
It is desirable to turn the sensor power supply ON/OFF at the same time the motor is on.
(This stops the LED from flickering and helps to cut down power consumption waste in standby.
2.5.4 Reset Signal R
1) Shaped reset waveforms, as output by the user-provided waveform-shaping circuit, are shown in
Figure 2.5.5.
Reset sensor waveforms
(printer connector pin No.4.)
Low
High
Low
Shaped reset waveforms
High
High
Low
NOTES: 1.
denotes a waveform output by the user-provided waveform shaping circuit.
2. The number of timing sensor waveforms between reset sensor waveforms varies.
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Figure 2.5.5
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2) Confirmation of Reset signal R (noise elimination)
Reset signal R is defined by the leading edge of the shaped timing waveforms output by the
waveform shaping circuit. When an edge has been detected, the shaped timing waveforms should
be read again after 15 ± 5 µs. If both results are equal, Reset signal R is established. If the results
are not equal, the pulse should be treated as noise and disregarded.
Shaped timing waveforms
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Read timing
15 ± 5 µs
15 ± 5 µs
Confirmation of timing
Reset signal R
Reset signal Rn
Reset signal Rn+1
NOTE:
denotes a shaped waveform output by the designer’s waveform-shaping circuit.
Figure 2.5.6
2.5.5 Relationship Between Timing Signal T and Reset Signal R
The printer controller makes Timing signal T confirmable within 100 µs and the next Timing signal T
confirmed T1 after confirming Reset signal R.
Shaped reset waveforms
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Reset signal R
Shaped timing waveform
R
Timing signal T
T1 T2 T3 T4 T5 T6 T7 T8 T9 T10
NOTES: 1.
user-supplied signals and waveforms.
2. The Timing signal T point fluctuates in relation to the Reset signals R. This causes a
shift in print position.
Figure 2.5.7
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2.6 Motor
1) Driving and braking:
Energize the motor driving signal to start a stopped motor.
Shut off the motor drive signal within 0.1 ms after the confirmation of
Reset signal Rn (Rn is R10 for the 5 × 7 font and 3-dot line spacing),
Short circuit the motor terminals with a transistor by energizing the
motor braking signal (100 ms or more), to quickly stop the motor. If
the motor is not stopped quickly, the paper release mechanism will not
work.
NOTES: 1. The transistor for motor driving/braking should be supplied on the designer’s side.
2. Use a low-saturation transistor for motor driving/braking.
2) Stopping due to an abnormality:
Refer to Sections 2.9 and 2.10
3) Current:
(a) Peak current:
(b) Mean current:
(c) Current waveform:
1.5 A typical (Power supply voltage: 5 VDC at 25°C {77°F}, when the
motor is started up)
2.2 A maximum (Power supply voltage: 5.8 VDC at -10°C {14°F}, when
the motor is started up)
0.35 A, typical (Power supply voltage: 5 VDC at 25°C {77°F} as
measured with 0 meter, not including when started up.)
Refer to the Figure below. (Power supply voltage:5 VDC, 25°C {77°F})
Current (A)
1.8
1.5
1.2
0.9
0.6
0.3
0
-0.3
-0.6
-0.9
A
A: When the motor is started up.
DBa:taWShheneethte4mUo.ctoormis braked.
C: In standby.
Time
C
B
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Reset signal
Motor drive signal
Motor brake
NOTE: Signals in
Rn
100µs±20µs
within 0.1ms 100ms
should be provided from the designer’s side.
Figure 2.6.1
or
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2.7 Print Solenoids
Dot printing is performed by energizing the print solenoids.
1) Number of print solenoids: 8
2) DC resistance:
1.3 Ω ± 10% (25°C {77°F})
3) Peak current:
2.5 A/solenoid, typical (Power supply voltage: 5.0 VDC at 25°C {77°F})
3.4 A/solenoid, maximum(Power supply voltage: 5.8 VDC
at -10°C {14°F})
4) Driver Circuity
x To ensure an appropriate printing density, use a low-saturation transistor for driving the print
solenoids.
(The print head driver must be designed so that the combined voltage loss when sending a current
to each solenoid does not exceed 0.4 V, including the collector/emitter saturation voltage loss.)
y It is desirable to connect capacitors, (1500 µF or more) between Common terminals for print
solenoids and GND near the printer connection part on the designer’s side in order to secure
printing density.
z A Zener diode is provided by a circuit created by the designer as a surge protector.
The zener diode should have the capacity to protect the maximum rating between the collector and
the emitter of the printing solenoid drive transistor.
{ Print solenoid drive pulse P should not shut off due to noise.
| Up to 3 print solenoids may sometimes be energized at the same time. Therefore, when using
transistor arrays, it is better not to connect A, D and G to the same array. (The same holds for B,
E and H, and C and F.)
} When the driver is OFF, the current flowing through print solenoids must become 0 A within 40 µs.
5) Drive timing and pulse width: FrDoamtatSheheleeat4dUin.gcoemdge of Timing signal Tn to the leading edge of
Timing signal Tn+1 (see following Figure).
DataShee
6) Power consumption:
3.5 mJ/dot typical (Power supply voltage: 5.0 VDC, 25°C {77°F})
8.4 mJ/dot maximum (Power supply voltage: 5.8 VDC, -10°C {14°F})
7) Spacing of energizing:
When energizing, from the confirmation of the Timing signal Tn, the
next energizing should be performed after the confirmation of Tn + 3.
8) Number of solenoids energized at the same time:
Maximum 3
9) Continuous energizing:
To protect solenoids from heat, one print solenoid can be energized
continuously up to 400 dot lines ( 6 × 3 × 400 = 7200 dots). Also, the
non-energized time should always be twice as long as the continuous
energized time.
10) Solenoid protection for abnormal conditions:
Refer to Section 2.9 and 2.10.
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Timing signal T
Tn
Print solenoid A
drive pulse
Print solenoid B
drive pulse
Pn
t1
Print solenoid C
drive pulse
Print solenoid D
drive pulse
Pn
Print solenoid E
drive pulse
Print solenoid F
drive pulse
Print solenoid G
drive pulse
Pn
Print solenoid H
drive pulse
Tn+1
Tn+2
Tn+3
t2
Pn+1
TYP 0.48ms
Pn+2
Pn+3
Pn+3
Pn+1
Pn+2
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Pn+1
Pn+3
Tn+4
Pn+4
Pn+4
Pn+4
Tn+5
Pn+5
Pn+5
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Current waveform
print solenoids A, D and G
Within 40µs
NOTES:
1. Signals in
should be provided by the designer.
2. t1 = t2 100 µs
3. For printing, print solenoids A, D and G are energized with drive pulse Pn which has the
pulse width of Timing signal Tn to Tn+1. Next, print solenoids B, E and H are energized
with drive pulse Pn+1 which has a pulse width equal to Timing signal Tn+1 to Tn+2. In
the same way, print solenoids C and F are energized with drive pulse Pn+2, and then
print solenoids A, D and G are energized with drive pulse Pn+3. The 8 solenoids should
be driven in the order (A, D, G) - (B, E, H) - (C, F).
Figure 2.7.1
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