Confidential
Technical manual
Thermal printer unit
EU-T532/T542
English
4012872
Issued Date 199 , ,
Issued by
Rev. A i
M-T532/T542 Technical Manual
Confidential
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Cautions
❏ Should any discrepancy exist between the contents of this document and the provisions of the "Master Contract"
or "Specifications," the latter shall take precedence over the former.
❏ We shall not be responsible for any troubles that might occur from the application of this document by customer
either to a machine other than this product, or to a drive circuit or other device that is the industrial property of a
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❏ No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any
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❏ Neither Seiko Epson Corporation nor its affiliates shall be liable to the purchaser of this product or third parties
for damages, loss es, c osts, or expe nses i ncu rred by the purcha se s or thi rd par ties as a resu lt of: acci dent, m isus e, or
abuse of this product or unauthoriz ed modifi cation s, repairs , or a lterations to th is product , or (excludin g the U. S.)
failure to strictly comply with Seiko Epson Corporation’s operating and maintenance instructions.
❏ 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.
ii Rev. A
Confidential
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.
Points That Must Be Observed
To Assure Product Safety
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.
Notes on Head Control
❏ 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 head, 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 beg i n to smoke.
❏ Always include protective circuitry governing the length of time power is applied and the amount of current that
is applied when designing the drive and control circuits for the head, motor, magnets, etc.
If protective circuitry is not included, misoperation of the printer control circuits could cause the comp onents mentioned
above to overheat and begin to smoke or burn.
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.
Rev. A iii
M-T532/T542 Technical Manual
Confidential
About This Manual
This manual is consisted of the following chapters.
Symbols
Notes in this manual are identified by their level of importance, as defined below.
CAUTION:
Observe cautions to avoid minor injury to yourself, damage to your equipment, or loss of
data.
Note:
Notes have important information and useful tips on the operation of your equipment.
Chapter 1
Features and Specifications
This chapter contains features, general specifications for the
EU-T532/T542.
Chapter 2
Operation Principle
This chapter contains the outline and principles of
mechanisms.
Chapter 3
Handling
This chapter contains precautions on handling, paper
loading/unloading pap er an d rem ovi ng jamm ed pap e r.
Chapter 4
Maintenance
This chapter contains cleaning, inspection, lubrication and
tools.
Chapter 5
Repair
This chapter contains repair levels, repair procedure and
troubleshooting.
Chapter 6
Assembly and Disassembly
This chapter contains assembly and disassembly for the unit s
and the modules of the EU-T532/T542.
Appendix
Appendix contains the exploded, and the lubrication
diagrams of the EU-T532/T542.
iv Rev. A
Confidential
Contents
About This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv
Chapter 1
Features and Specifications
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
System Configuration and Module Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Module Combinations and Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Chapter 2
Operation Principles
Outline of Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Paper Roll Supply Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Paper Holding Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Paper Load-absorbing Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Paper NE Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Printer Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Drive Force Transmission Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Paper Feed Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Printing Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Paper Guide Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Detector Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Autocutter Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Cut Sheet Presenter Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Paper Carrying Operation (With Loop) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Paper Carrying Operation (Without Loop) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
Retract Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
Detector Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18
Control Circuit Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
DIP Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
Memory Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
Chapter 3
Handling
Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Transport Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Carrying Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Installation Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Handling Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Storage Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Opening/Closing Units and Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Paper Roll Supply Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Printer Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Cut Sheet Presenter Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Loading/Removing Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Loading Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Removing Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Removing Jammed Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Removing Jammed Paper in the Cut Sheet Presenter Module . . . . . . . . . . . . 3-8
Removing Jammed Paper in the Printer Module . . . . . . . . . . . . . . . . . . . . . . . 3-8
Paper NE Detector Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Rev. A v
M-T532/T542 Technical Manual
Confidential
Self Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Performing the Self Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Self Test End . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
LED Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
POWER LED (Power Supply Error): Green . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
PAPER OUT LED (Paper-End Error): Red . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
ERROR LED (Error): Red . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Chapter 4
Maintenance
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Thermal Head Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Removing Stains (Except for the Thermal Head) . . . . . . . . . . . . . . . . . . . . . . . 4-2
Removing Dirt and Dust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Removing Foreign Matter When the Cutter Locks . . . . . . . . . . . . . . . . . . . . . . 4-2
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Daily Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Periodic Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Lubricant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Lubrication Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Lubrication Point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Lubricant List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Chapter 5
Repair
Repair Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Repair Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Chapter 6
Assembly, Disassembly
Small Parts Abbreviation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-27
Component Configurations Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-27
Unit Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-27
Module Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-28
Unit Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-30
Cover, circuit board A/B and Control circuit board module . . . . . . . . . . . . . 6-30
Paper Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-33
Cut sheet presenter module, Holding plate, printer, Plate, lower paper guide,
Plate, paper guide holder, and Holder, paper roll . . . . . . . . . . . . . . . . . . . . . . 6-34
Module Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-38
Paper roll supply module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-38
Cut sheet presenter module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-43
Appendix
EU-T532/T542 Exploded Diagram (Type 1 and 2) . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
EU-T532/T542 Exploded Diagram (Type 3 and 4) . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Paper Roll Supply Module Exploded Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
Printer Module Exploded Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
Cut Sheet Presenter Module Exploded Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5
Paper Roll Supply Module Lubrication Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . A-6
Printer Module Lubrication Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-7
Cut Sheet Presenter Module Lubrication Diagram . . . . . . . . . . . . . . . . . . . . . . . . . A-8
vi Rev. A
Confidential
Rev. A Features and Specifications 1-1
EU-T532/T542 Technical Manual
秘秘秘秘 /Confidential
Chapter 1
Features and Specifications
Features
The EU-T532/T542 (EU-T532 for 79.5 mm {3.13"} paper width/ EU-T542 for 82.5 mm {3.25"}
paper width) is designed to be used for issuing tickets and receipts at banks, kiosks and other
similar locations. The features of the EU-T532/T542 are as follows:
❏ High speed receipt issuing: 150 mm/s {5.9"/s} maximum
❏ High reliability: 600,000 receipt issue
❏ Length of receipt: 228.4 mm {9"} maximum
❏ Available for large paper roll core dimensions: 254 mm {10"} diameter maximum
❏ Supports ESC/POS
equivalent commands
❏ Able to print bar codes (fence and ladder) and graphics
❏ Options available for all models:
• Japanese Kanji model: Supports JIS Level 1 and 2
• Simple Chinese model: Supports GB50007-85
• Traditional Chinese model: Supports BIG5 Level 1 and 2
❏ Optional cut sheet retracting mechanism can be used for the EU-T532/T542 Type 2 and 4
❏ Able to perform the remote monitoring using a status monitor
1-2 Features and Specifications Rev. A
秘秘秘秘 /Confidential
System Configuration and Module Names
The whole systems is called the “EU-T532/T542,” and each unit is called a “module” which can
be separated from the others. The EU-T532/T542 has four types, type 1 to 4, depending on the
combination of the modules. (See “Module Combinations and Specifications” on page 1-4.) The
configurations of the modules are as follows:
Figure 1-1 EU-T532/T542 appearance (Type 1 and 2)
Figure 1-2 EU-T532/T542 appearance (Type 3 and 4)
paper roll supply modu le
control circuit board module (inside)
printer module
cut sheet presenter module
holding plate, printer
printer module
cut sheet presenter
module
control circuit board module
*The mounting place for the contro l circui t
module will differ depending on users.
Rev. A Features and Specifications 1-3
EU-T532/T542 Technical Manual
秘秘秘秘 /Confidential
Specifications
The specifications of the EU-T532/T5 42 are shown belo w. Refer to specificat ions for th e EU-T532
and the EU-T542 issued by Seiko Epson Corporation for details.
Table 1.1 Specifications
Item
Specification
Paper roll Outside diameter
254 mm {10"}
Paper width
EU-T532: 79.5 ± 0.5 mm {3.13 ± 0.02"}
EU-T542: 82.5 ± 0.5 mm {3.25 ± 0.02"}
Paper carrying speed
150 mm/s {5.9"/s} maximum
Paper length to be
presented and retracted
Issuing the cut sheet
(Receipt printing)
76.2 to 228.6 mm {3" to 9"}
(When the cut sheet is looped)
76.2 to 3000 mm {3" to 118.1"}
(When the cu t sh e et is not looped )
Retracting the cut sheet 76.2 to 228.6 mm {3" to 9"}
(When the cut sheet is ejected downward of the cut
sheet presenter module: Type 2 and 4)
Print speed
150 mm/s {5.9"/s} maximum
Print width
72 mm {2.84"} maximum (recommended)
Reliability Receipt printing
600,000 times
Cut sheet retracting
60,000 times
Printer
Mechanism: 15,000,000 lines
Thermal head: 100 km {62.14 miles}
Paper roll Specified thermal paper
Original paper No.: P350 KSP
Original paper No.: TF50KS-E NIPPON PAPER
INDUSTRIES CO.,LTD
Original paper No.: KF50 KANZAN
Original paper No.: PD160R
OJI PAPER MFG.CO., LTD
Original paper No.: TF11KS-ET NIPPON PAPER
INDUSTRIES CO.,LTD
Original paper No.: TF51KS-X1 NIPPON PAPER
INDUSTRIES CO.,LTD
Original paper No.: PD200N
OJI PAPER MFG.CO., LTD
Original paper No.: AFP234 MITSUBISHI PAPER MILLS
CO., LTD
A different paper type may give a different print
quality.
Paper thickness 60 to 150 µm
1-4 Features and Specifications Rev. A
秘秘秘秘 /Confidential
Module Combinations and Specifications
The EU-T532/T542 can be used as four different types by the mod ule c ombinations. The mod ule
combinations, functions and specifications are as follows:
(*): The printer pulls a cut sheet that has been forgotten in the print er an d ejects it to the low er part of the cut
sheet presenter module.
Environmental condition Operating temperat ure 0 to 50°C
Operating humidity 10 to 80% RH
Item
Type 1
Type 2
Type 3 Type 4
Functions Paper roll is held by
a fixed shaft.
Yes Yes
Cut paper is
advanced by a cut
sheet presenter.
Yes Yes Yes Yes
Cut sheet is
retracted if the user
forgets to remove
the paper.
Yes (*)
Yes (*)
Module
combination
Paper roll supply
module
Yes Yes
Printer module
Yes Yes Yes Yes
Control circuit
board module
Yes Yes Yes Yes
Cut sheet presenter
module
Yes Yes
(with a retracting
function)
Yes Yes
(with a retracting
function)
Mass
Approximately
5.5 kg
{12.13 lb}
Approximately
5.5 kg
{12.13 lb]
Approximately
2 kg
{4.41 lb}
Approximately
2 kg
{4.41 lb}
External dimensions
(W × D × H): mm {inch}
176
×
520.7
×
231.4
{6.93 × 20.5
×
9.11"}
176 × 520.7
×
231.4
{6.93 × 20.5 × 9.11"}
139.3 × 174.6
×
165
{5.48 × 6.85 × 6.5"}
139.3 × 174.6
×
165
{5.75 × 6.85 × 6.5"}
Table 1.1 Specifications
Item
Specification
80
50
10
0
0 5 10 20 30 40 5550
+
50°C 35%
40°C 58%
34°C 80%
Print quality is
guaranteed.
Operation is
guaranteed
.
Rev. A Operation Principles 2-1
EU-T532/T542 Technical Manual
Confidential
Chapter 2
Operation Principles
Outline of Mechanism
The EU-T532/T542 consists of four modules: the paper roll supply module, the printer module,
the cut sheet presenter module, and the control circuit board module.
Paper Roll Supply Module
The paper roll supply module holds a large diameter paper roll and gu ides the paper to the
printer mod ule. This modu le consists of the paper holding part, the paper load-absorbing
mechanism, and the paper nearend detector. The appearance of this module is shown below.
Figure 2-1 Paper roll supply module appearance
frame, main
paper nearend detector
screw, paper nearend detector
holder, paper roll
(Inside: shaft, paper roll)
holding plate, pape r roll
paper roll hold unit
plate, fixed
frame, paper roll tension
(Inside: spring, pape r roll tension)
shaft, paper roll tension roller
roller, paper roll tension
2-2 Operation Principles Rev. A
Confidential
Paper Holding Section
The paper roll holding mechanism is a shaft support type. The paper roll holding section
consists of the
shaft, paper roll
fixed to the
frame, main a sse m b l y
, the
holder, paper roll A
(for the inner diameter of the paper core: 25. 4 mm {1 inch}) that fits the size of t he paper roll core
used, and
paper roll hold unit
that holds the sides of the paper roll.
The
paper roll hold unit
is supported by the
holding plate, paper roll
so that it can open/
close. The
plate, fixed
slides into the groove of the
shaft, paper roll
and is automatically
locked when the
paper roll hold unit
pushes against the
shaft, paper roll
. To open the
paper
roll hold unit
, see the illustration (a sticker) on the
plate, fixed
: slightly lif t the bottom of the
plate, fixed
in the direction of the arrow (upwards) to release the lock, and then pull it toward
the near side to open the unit. (For the illustrati on of the sticker, see page 3-6.)
Note:
If the paper inner core dimension differs from the
holder, paper roll A
due to the paper thickness, you
can replace it with the
holder, paper roll B
(for the inner diameter of the paper core: 50.8 mm {2 inch})
or the
holder, paper roll C
(for the inner diameter of the paper core: 76.2 mm {3 inch}) packed in the
box. (See page 6-37, “Assembly and Disassembly.” for replacement.)
Paper Load-absorbing Mechanism
The paper load-absorbing mechanism consists of four parts: the
rolle r, pape r ro l l t ensi o n
, the
shaft, paper roll tension roller
, the
frame, paper roll tension
, and the
spring, paper roll
tension
. The
roller, paper roll tension
receives the paper tension. The
shaft, paper roll
tension roller
supports the
roller, paper roll tension
so that the
roller, paper roll tension
can
rotate. The
frame, paper roll tension
fixes the previous two parts and is mounted on the
shaft,
paper roll
. The
spring, paper roll tension
is hooked on one end to the
frame, main
assembly
, and on the other end to the
frame, paper roll tension
.
Using the paper tensile force generated when feeding the paper, this mechanism oscillates the
roller, paper roll tension
around the
shaft, paper roll
, and reduces the paper feeding load due
to inertia of the paper ro ll.
Note:
In order to use the function of this mechanism properly, paper must be fed along the paper rout e indicated
in the illustration on the
paper roll hold unit
. Feeding paper along the paper route other than the route
in the illustration may cause improper operation or printing disorders.
Paper NE Detector
The
paper NE detector
has two kind of detections, the primary NE detection and the
secondary NE detection. The primary NE detection can detect the amount remaining on the
paper roll using a reflecting photo sensor. After the primary NE detection, the secondary
detection can be used to return the status when the paper is fed to the length specified by the
memory switch setting. (See SW No. 2, 3 in Table 2-8 [page 2-22])
The
paper NE detector
is mounted on the
frame, paper roll tension
, and is secured with the
screw, NE detector
. The position of th e
paper NE detector
can be altered to adjust the sett ing
for the amount remaining on the paper roll. (See “Paper NE detector setting method”on page
3-9.)
Rev. A Operation Principles 2-3
EU-T532/T542 Technical Manual
Confidential
Printer Module
The printer module has a printing mechanism with the paper feeding and a cutting mechanism
to cut the paper.
The printer consists of the following six mechanisms: the drive force transmission mechanism,
the paper feed mechanism, the printing mechanism, the paper guide mechanism, the detector
mechanism, and the autocutter mechanism.
Figure 2-2 Printer module appearance
Drive Force Transmission Mechanism
This mechanism consists of the
motor, paper feed, receipt, B
(fixed to pinion), the
gear,
reduction
, the
gear, idle r
, and the
gear, platen
. The printer uses a stepping motor, the
rotation force of which is reduced in sequence by the
gear, reduction
and the
gear, idl er
before being transmitted to the
gear, platen
. (The arrows in the figure below indicate the
direction of the gear rotation.) The
gear, platen
is mounted to the frame platen unit and
separates from the
gear, idle r
when the
platen
is open.
Figure 2-3 Drive force transmission mechanism
printer module
holding plate, printer
gear, platen
gear, idler
gear, reduction
motor, paper feed, receipt, B
2-4 Operation Principles Rev. A
Confidential
This printer uses a 4-phase bi-polar stepping motor driven by 24 V voltage controlled 2-2 phase
excitation. The maximum drive frequency of 2-2 phase excitation is 1200 pps. [pps: pulses per
second]
Paper Feed Mechanism
This mechanism consists of the paper feed mechanism and the platen-open mechanism.
Paper feed mechanis m
The paper feed mechanism consists of the
platen
(paper feed roller) and the
thermal head
.
When the
motor, paper feed, receipt, B
rotates counterclockwise as viewed from the shaft,
the gear train transmits the motion to the
platen
which rotates in direction A.
Figure 2-4 Paper feed mechanism
Paper feed operation during prin ting
The
platen
presses the thermal paper against the
thermal head
with a constant force. When
the
platen
rotates in direction A, the thermal paper advances in direction B.
Figure 2-5 Paper feed operation during printing
thermal head
platen
motor, paper feed, receipt, B
A
B
platen
thermal paper
A
Rev. A Operation Principles 2-5
EU-T532/T542 Technical Manual
Confidential
Platen-open mechanism
The platen-open mechanism is used for the following purposes:
• Paper loading when using the printer with the curved path type. (Excluding when
using semi-autoloading mode.)
• Removing a paper jam when the paper jam has occurred
• The
thermal head
and the
platen
cleaning
The mechanism consists of the
frame, platen
, the
lever, platen
, the
shaft, platen
, the
spring,
lever
, the
lock lever
, the
spring, lock lever
, and the
pushplate , p l aten, B
.
In the
frame, platen
, the
platen
is mounted. The
lever, platen
is operated by hand to open
the frame platen unit. The
shaft, platen
connects the
lever, platen
and the
frame, platen
to
the
frame, base
in a manner which allows them to rotate. The
spring, lever
pulls the
lever,
platen
in the opposite direction of arrow A when the
platen
is open. The
lock lever
is located
on the gear train side of the
frame, platen
and locks the frame platen unit to the
frame, base
.
The
spring, lock lever
(inside the
lock lever
) pushes the
lock lever
back. The
pushplate,
platen, B
is secured on top of the
frame, platen
and covers the
fixed blade
.
When the frame platen unit is closed, the
platen
is in the print- ready position where the
gear,
platen
and the
gear, idler
are engaged and the power can be transmitted readily. Also, the
lock lever
is locked at a part of the
frame, base
to prevent the gears from disengaging.
To open the
platen
, turn the
lever, platen
in the direction of arrow A as shown in Figure 2-6.
Simultaneously, the
lock lever
is released and the frame platen unit is opened. To close the
platen
, turn the
lever, platen
in the opposite direction of arrow A until the lever stops.
Figure 2-6 Platen-open mechanism
frame, platen
shaft, platen
frame, base
spring, lock leve r
spring, lever
lever, platen
lock lever
gear, idler
gear, platen
A
< platen-open >
< platen-close >
push plate, platen, B
*The cover, gear is removed in these figures.
2-6 Operation Principles Rev. A
Confidential
Printing Mechanism
This mechanism consists of the
thermal head
which has the head heating elements a rrange d in
a series and has a driver IC for controlling voltage to the head heating elements, the
platen
which is also used for the paper feed mechanism as well as this mechanism (the
thermal head
is also used for both mechanisms), and the
spring, press head
. The
platen
presses the thermal
paper wrapped around the
platen
against the head heating elements pressed by the
spring,
press head
. When the elements are activated, the paper will be heated at the designated points,
resulting in the printing actio n.
Printing operation principles
The cross-sections of the
thermal head
and the thermal paper are shown below. Printing is
performed in the following steps:
Figure 2-7 Cross -section of thermal head and thermal paper
1. Drive pulses are sent to the designated dot electrodes in accordance with the print signal.
2. Since the resistor layers are formed at the top of each electrode inside of the
thermal head
,
the resistor layers are heated up when the drive pulses are sent to the electrodes.
3. The thermal energy of the heated resistors is transferred via the protective layer of the
thermal head
to the surface of the thermal paper, and the heat-sensitive layer of the paper
changes color, thus forming the printed character.
<cross-section of thermal paper>
<cross-section of thermal head>
<top view of thermal head>
base
heat- sensitive layer
resistor layer
protective layer
electrode layer
ceramic base plate
glaze layer
electrode laye r
electrode laye r
resistor layer
Rev. A Operation Principles 2-7
EU-T532/T542 Technical Manual
Confidential
Data input and printing
The
thermal head
consists of the head heating elements, the head driver, which controls or
drives the head heating elements, and the
thermistor,
which detects the temperature of the
thermal head
. The serial print data input from Data In (DI1) is synchronized to the CLOCK
(CLK) input, and temporarily placed in the SHIFT REGISTER. Using the LATCH (/LAT) signal
timing, these data are then stored in the LATCH REGISTER. Activated by the STROBE signals
(/STR1, /STR2), the stored print data is used to control the gate ON condition for the head
heating element drive pulse.
This printer is equipped with two strobes, and can print using a maximum of four divisions.
The drive pulse width is controlled by the control circuit board module.
Figure 2-8 Thermal head block diagram
Table 2-3 Strobe and Dot Number
STROBE No. Dot No. Dots/STROBE
1 1 to 320 320
2 321 to 640 320
*The STB terminals are pulled down in the con trol IC.
64 output each
2-8 Operation Principles Rev. A
Confidential
Paper Guide Mechanism
This mechanism consists of the paper guide mechanism. The paper path consists of the
paper
guide, straight, front
and the
paper guide, straight, back
. The paper path is shown below.
Figure 2-9 Paper path
Detector Mechanism
This mechanism consists of the paper-end mechanism, the platen-open detector mechanism, the
head temperature detector mechanism, and the black mark detector mechanism.
Paper-end detector mechanism
The paper-end detector mechanism is located inside the paper guide mechanism to detect the
end of the thermal paper and the paper insertion state in the semi-autoloading mode. This
mechanism consists of the
transparent photo sensor
, the
lever, paper detector
which
presses against the thermal paper and the
spring, paper detector
which pulls the
lever,
paper detector
.
Figure 2-10 Paper -end detector circuit
paper guide, straight, back
paper guide, straight, front
platen
paper
<printer side>
paper-end detector signal
Photo interrupter
Pin No.
220
Ω
75 K
Ω
13 V
13
V
DD
11
7, 8, 10
GND
Rev. A Operation Principles 2-9
EU-T532/T542 Technical Manual
Confidential
The
transparent photo
sensor is in a high state (HI) when the paper is present, and in a low
state (LOW) when the paper is not present because the
lever, paper detector
blocks light to
the sensor. When the end of the thermal paper passes through the paper guide, the
lever,
paper detector
operates as shown in Figure 2-11. At this time, the output level from the
transparent photo sensor
varies as shown in Figure 2-12, then the absence of paper is
detected. When the semi-autoloading function is used, the insertion of paper changes the status
from “no paper” to “paper.” Since the outpu t l evel cha nges fro m LOW to H I, the st atus c hanges
to “paper”; then the semi-autoloading function is initiated.
Figure 2-11 Paper-end detector mechanism
Figure 2-12 Paper-end detector operation
platen
thermal head
transparent photo
sensor
lever, paper detector
paper guide, straight, front
frame, base
paper
<paper-present condit ion >
<paper-absent cond it io n>
paper guide, straight, back
paper-end signal
conductive confirma tion
paper-end detection
2-10 Operation Principles Rev. A
Confidential
Platen-open detector mechanism
The platen-open detector mechanism has a
microswitch
which detects whether the
platen
is
open (printing impossible because the
thermal head
is away from the
platen
) or closed
(printing possible). The
microswitch
can be OFF only when the
frame, platen
is perfectly
closed, and at all other times is ON.
Figure 2-13 Platen-open detector circuit
Head temperature detector mechanism
The
thermal head
has a
thermistor
to detect the temperature of the
thermal head
.
Black mark detector mechanism
The black mark mechanism is a device whi ch can be at tached insi de the paper g uide mechanism
to determine the printing position when using pre-p ri nted ther mal pap er. Th is mec hani sm uses
the reflective photo sensor.
Figure 2-14 Black mark detector circuit
<printer side> Pin No.
platen open
platen open
The pin No.s 14 and 15 can be reversed.
14
15
SW2
SW1
Pin No.
black mark de tector
output
<printer side>
220
Ω
0 to 100 K
Ω
10 K
Ω
13
V
DD
12
7, 8, 10
GND
Rev. A Operation Principles 2-11
EU-T532/T542 Technical Manual
Confidential
Black marks are detected through changes in output level from the reflective photo sensor. The
changes in reflectivity between the pre-printed black marks and blank areas of the thermal
paper cause the amount of light returning to the sensor to vary; then the sensor output level is
also varied as shown in Fig ure 2-15 . These v ariat ions ar e used t o detec t the black mark. Si nce the
relationship between the black mark an d the pri nt positi on can be specified in the pr inter set up,
detecting the black mark permits the correct positioning of the paper.
Figure 2-15 Black mark detecting operation
Autocutter Mechanism
This mechanism consists of the fixed blade mechanism, the movable cutter blade mechanism
and the emergency cutter mechanism.
The basic principl e of t he aut ocutt er mecha nism is an appl icati on of the sci ssors princi ple, where
the paper is cut by two crossi ng blades. A config urati on which al lows the two blades to separate
has been adopted so that the
fixed blade, H
separates from the
movable cutter blade, full, H
when the
platen
is open.
Fixed blade mechanism
This mechanism is mounted on the frame platen unit. This configuration consists of the
fixed
blade, H
which cuts the paper directly, the
spring, fixed b l ade
which stabilizes the vertical
positioning of the
fixed blade, H
, and the
cover, fixed blade
which covers the
fixed blade,
H
and is a paper guide as well as makes the operation to open the
platen
safe.
Figure 2-16 Fixed blade mechanism
black mark de tector signal
conductive confirmation
black mark detection
spring, fixed blade
fixed blade, H
cover, fixed blade
frame, platen unit
2-12 Operation Principles Rev. A
Confidential
Movable cutter blade m ec h an ism
This mechanism is mounted on t he
frame, base
. The drive force transmission mechanism is on
the
cover, cutter, H
side. The
motor, cutter, H
, which is a DC brush motor attached the
gear,
cutter motor
. It supplies the power and is attached on the
cover, cutter, H
with screws. The
gear, cutter worm, H
is supported by the
shaft, reduction A/C
, and the
gear, cutter drive,
H
is attached with push nuts to the
shaft, cutter drive gear
fixed on the
cover, cutter, H
.
After being transmitted through the
gear, cutter worm, H
, the power is transmitted to the
gear, cutter drive, H
.
The rotational movement of the
gear, cutter drive, H
is translated to the back and forth
movement of the
movable cutter blade, full, H
by being engaged the
shaft, movabl e cu tte r
blade drive
with the oval hole of the
movable cutter blade, full, H
on the
frame, cutter
.
Also, the
microswitch
attached to the
cover, cutter, H
is connected to the
gear, cutter drive,
H
, enabling it to detect the position of the
movable cutter blade, full, H
. The lead wires of the
motor, cutter, H
and the
microswitch
are bound together and connect to the
circuit board
.
The
shaft, movable cutter blade
is on the
frame, cutter
side. The
receiver, movable
cutter blade
, the
spacer, movable cutter blade
, the
spring, movable cutter blade
and
the
washer, movable cutter blade spring
are mounted on the
shaft, movable cutter blade
in a group with a push nut.
When putting the
cover, cutter, H
and the
frame, cutter
together, engage the
shaft, movable
cutter blade drive
with the oval hole of the
movable cutter blade, full, H
, and secure the
cover, cutter, H
and the
frame, cutter
with screws.
Figure 2-17 Movable cutter blade mechanism
gear, cutter drive, H
shaft, cutter drive gear
cover, cutter, H
shaft, movable cutter
blade drive
gear, cutter worm, H
shaft, reduction A/C
(inside the gear, cutter
worm: dot lined part)
frame, cut ter
movable cut ter blade , full, H
receiver, movable
cutter blade
spring, movable
cutter blade
washer, mo vab l e
cutter blade spring
shaft, movable cutter blade
spacer, movable cutter blade
motor, cutter, H
microswitch
gear, cutter motor
Rev. A Operation Principles 2-13
EU-T532/T542 Technical Manual
Confidential
Auto cutting operation
The
autocutter
will operate when the frame platen unit is closed and a paper is loaded. (The
frame platen unit can be closed when the
movable cutter blade, full, H
is in the standby
position. The auto cutting operation is perform ed in the followi ng steps:
1. Drive the
motor, cutter, H
in the forward rotation.
2. The
microswitch
is switched from OFF (open) to ON (closed), while the
motor, cutter, H
continues to rotate in the forward rotation. The
movable cutter blade, full, H
intersects
with the
fixed cutter blade, H
and cuts the paper from the right to the left, to the direction
of the first column.
3. After cutting the paper, the
movable cutter blade, full, H
starts to return to the home
position.
4. As the
movable cutter blade, full, H
approaches the home position, the
microswitch
is
switched from ON (close) to OFF (open); then the
motor, cutter, H
stops rotating and the
brake is applied.
Figure 2-18 Auto cutting operation
Figure 2-19 Auto cutting control example
fixed blade, H
spring, fix e d blade
movable cut ter blade , full, H
cutter motor forward driving
cutter motor brake
switch signal rectifying
waveform
2-14 Operation Principles Rev. A
Confidential
Note:
If the
movable cutter blade, full, H
can not be returned to the home position because of a foreign
matter locking the blade when powered by the
motor
, rotate the knob on the
gear, cutter w o r m, H
with a tool such as a ball-point pen or tweezers to move the
movable cutter blade, full , H
to the home
position. The window on the
cover, cutter, H
can be used to check if the
movable cutter blade,
full, H
has returned to the home position.
Figure 2-20 Home position check
window
<Movable cutter blade in the home position>
knob
Rev. A Operation Principles 2-15
EU-T532/T542 Technical Manual
Confidential
Cut Sheet Presenter Module
The cut sheet presenter module has a mechanism to carry the paper printed and cut by the
printer module to the paper exit. Also, it has an optiona l cut sheet retr acting func tion to r etract a
cut sheet when the cut sheet is not removed.
Figure 2-21 Appearance of cut sheet presenter module
Paper Carrying Operation (With Loop)
A paper carrying operation is performed at the same time with the start of the paper feeding of
the printer module. The
motor, paper fe ed rec eip t, B
rotates in the clockwise direction as
seen from the shaft direction, and the
roller, cut sheet presenter
rotates in the clockwise
direction via the gears. The
roller, cut sheet hold
is pressed to the
roller, cut sheet presenter
by a spring. The first
roller, cut sheet presenter
and the
roller, cut sheet hold
, and the
second
roller, cut sheet presenter
and the
roller, cut sheet hold
are connected with the
belt,
cut paper presenter transmission
(not shown) and rotate in the same direction.
The paper sent from the printer module is fed along the paper guiding part, and carried between
the first
roller, cut sheet presenter
and the
roller, cut sheet hold
. When the tip of the paper
reaches the detection position, the
motor, paper feed receipt, B
stops temporarily.
Figure 2-22 Start of the cut sheet carrying
carried paper sensor
roller, cut sheet hold (first)
cut sheet
roller, cut sheet presenter (second)
motor, paper feed,
receipt, B
roller, cut sheet hold (second)
roller, cut sheet presenter (first)
2-16 Operation Principles Rev. A
Confidential
The tip of the paper sent from the pri nter mod ule is in the stand by state be tween the first
roller,
cut sheet presenter
and the
roller, cut sheet hold
, and the paper is contin uously fed fr om the
printer module. The paper pushes up the
paper guide, upper
and temporarily forms a loop.
Figure 2-23 Cut Sheet with Loop
When the paper feed from the printer module is finished, the
motor, paper feed receipt, B
resumes rotating. At this time, the cutter on the printer module cuts the paper. The cut sheet is
passed from the first
roller, cut sheet presenter
to the second
roller, cut sheet presenter
,
and is carried to the
paper exit
.
When the
carried paper sensor
detects the end of the cut sheet, the
motor, paper feed
receipt, B
will stop. With the cut sheet between the second
roller, cut sheet presenter
and the
second
roller, cut sheet hold
, a series of operations is completed and the cut sheet is ejected
from the
paper exit
.
A
cut sheet presence sensor
is provided near the
paper exit
to detect whether or not the cut
paper is remo ved by a recipient.
Figure 2-24 End of the Cut Sheet Carrying Operation
roller, cut sheet presenter (first)
roller, cut sheet hold (first)
paper guide, upper
cut sheet
autocutter
autocutter
carried paper sensor
roller, cut sheet hold (second)
cut sheet p resence sensor
paper exit
roller, cut sheet presenter (second)
cut sheet
roller, cut sheet hold (first)
roller, cut sheet presenter (first)
Rev. A Operation Principles 2-17
EU-T532/T542 Technical Manual
Confidential
Paper Carrying Operation (Without Loop)
The cut sheet can be carried without forming a loop.
Figure 2-25 Cut Sheet Operation without Loop
Note:
During paper carrying operations without a loop, do not pull out the paper.
Retract Function
The retract function retracts the cut sheet inside the unit if the recipient does not take the cut
sheet. The retract mechanism consists of the
frame, paper route change
, the
plate, route
change guide
, the
roller, retract
, the
solenoid
, and the
paper path change sens or
.
The retracting operation is started by a command signal for the retraction. At first, the
paper
route change
performs the paper path change operation to retract the cut sheet. When the
solenoid
linked with the
frame, paper route c h a nge
is energized, the
frame, paper route
change
and the
plate, route change guide
move in direction A. After the
paper route
change sensor
detects the end of the paper route change operation, the
motor, paper feed
receipt, B
begins to rotate in the counterclockwise direction; then through the gears, the
roller,
cut sheet presenter
and the
roller, retract
inside the retracting paper route rotate and the cut
sheet is retracted into the unit through the retracting paper route. The retracted cut sheet will fall
to the bottom of the cut sheet presenter module.
roller, cut sheet hold
cut sheet
roller, cut sheet presenter
2-18 Operation Principles Rev. A
Confidential
Figure 2-26 Retract Function
Detector Mechanism
The detector mechanism consists of the
cover, open sensor
, the
carried paper sensor
, the
cut sheet presence sensor
, the
paper path change sensor
, and the
retracted paper
sensor 1
.
Cover open sensor
This sensor detects whether the
upper frame, cut sheet pres e nte r unit
is open or not.
Carried paper sensor
This sensor detects the paper presence in the paper carrying route.
Cut sheet presence sensor
This sensor detects whether or not a recipient has taken the cut sheet.
Paper path chan ge sensor
This sensor detects the retracted paper route change when the cut sheet is not taken.
Retracted paper sensor 1
This sensor detects the paper presence in the retracted paper route.
cut sheet
retracted paper sensor 1
plate, paper route
change guide
paper path change sensor
roller, retract
frame, paper route change
Rev. A Operation Principles 2-19
EU-T532/T542 Technical Manual
Confidential
Control Circuit Board Module
The control circuit board module controls all functions of each module and has the interface
connectors and the power supply terminals. Each function can be set by using the DIP switches
and the memory switches.
Figure 2-27 Appearance of the control circuit board module
DIP Switches
The circuit board has two DIP switches (DSW 1/2). Each setting is as follows:
DIP Switch 1
*: Effective only when the serial interface is selected .
Table 2-1 DSW 1
SW No. Function
ON OFF
Default Setting
1 Black mark sensor Enabled Disabled
OFF
2
Interface selection
Refer to Table 2-2
3
4 Serial interface
handshaking
XON/XOFF DTR/DSR or
CTS/RTS
OFF*
5 Serial interface
parity check
Yes No
6 Serial interface
parity selection
Even Odd
7
Serial interface
baud rate selection
Refer to Table 2-3
8
DIP switch 1
DIP switch 2
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