KD2003-DG12A
Printheads
Compact high speed thick film
thermal printhead (8dots / mm)
KD2003-DG12A
KD2003-DG12A built in new and high density driver IC developed by the cutting edge technologies realizes the highest
speed in the same class (250mm/s) at both Thermal Transfer and Direct Thermal.
This Thermal Printhead is suitable for POS, ATM, KIOSK and TICKET industries which require High Speed / High
Density and Graphic printing.
By the implementation of highly durable pro tective coat, it achi eves 150km as the standard abrasion life.
zApplications
Label printers
Ticket printers
POS printers
ATM printers
KIOSK printers
T erminal printers
zFeatures
1) The use of a special partial glaze and the latest heating elemen t structure, along w ith new high-de nsity driver chip s that
can accept big current, has allowed ROHM to achieve print speeds of 250mm/s, the fastest in its class ( with historical
control ).
2) One rank resistance value of 650Ω ± 3% eliminates the inconvenience of rank selection.
3) The required driving voltage of 3.13 to 5.25V allows wide range of power supply voltage setting. This also allows
multiple choice of electronic co mponents fo r printers.
4) With the standard abrasion life of 150km, long life is achieved agains t the largely abrasive thermal paper .
zDimensions (Unit : mm)
Max.18
10.2±0.2
5±0.2
80 (Effective Print Width)
Dot #640
2.6±0.1
No.28 No.1
2-M3 (Effective Depth 3)
91±0.3
Connector
81±0.2
Max.1.7
5.1±0.4
Dot #1
MAX. φ20.0
Exposed Conductor Side
Insert Direction
5.1±0.2
1/4
Printheads
zEquivalent circuit
VH
GND
VSF
VDD
1-4,26-28
7-11,19-22
L/S
25
15
DOT #640 DOT #1
5
1234
KD2003-DG12A
STB2
STB1
LAT
CLK
DI2
DO2
DI1
DO1
TM
TM
zPin assignments
No.
10
11
12
13
14
Circuit
1VH
2
3
4
5
6
7
8
9
VH
VH
VH
DO1
DI1
GND
GND
GND
GND
GND
STB1
CLK
LAT
18
12
14
13
24
23
6
5
16
17
SHIFT REGISTER 2 SHIFT REGISTER 1
No.
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Circuit
V
TM
TM
STB2
GND
GND
GND
GND
DO2
DI2
VSF
VH
VH
VH
THERMISTOR
30kΩ B3950
Fig.1
DD
LATCH REGISTER
2/4
Printheads
zTiming chart
CLOCK (CLK)
DATA IN (DI)
"High":BLACK
"Low" :WHITE
DATA OUT (DO)
"High":BLACK
"Low" :WHITE
LATCH (LAT)
"High":HOLD
"Low" :THROUGH
STROBE (STB)
DRIVER OUT
tw CLK
t setup DI t hold DI
td DO
t setup LAT
tw LAT t setup STB
KD2003-DG12A
t hold LAT
tdo tdo
zCharacteristics
Parameter
Effective printing width
Dot pitch
Total dot number
Average resistance value
Applied voltage
Applied power
Print cycle
Pulse width
Maximum number of dots energized simultaneously
Maximum clock frequency
Maximum roller diameter
Running life / pulse life
Operating temperature
Fig.2
Symbol Typical Unit
−
−
−
Rave
H
V
P
O
SLT
ON
T
−
−
−
−
−
80
0.125
640
650
24
0.74
0.5
0.2
640
16
φ20.0
150/1×10
5 to 45
8
mm
mm
dots
Ω
V
W/dot
ms
ms
dots
MHz
mm
km/pulses
°C
3/4
Printheads
zElectrical characteristic curves
0.8
0.7
0.6
0.5
0.4
0.3
ENERGY (mJ/dot)
0.2
0.1
0
012345
SCANNING LINE TIME (
Fig.3 Adaptive speed chart
180
160
140
120
100
80
60
RESISTANCE : (kΩ)
40
20
0
−20 −10 10 30 50 700204060
Paper : KF50-HDA (OJI)
ms/line)
TEMPERATURE : (°C)
1.8
1.6
1.4
1.2
1.0
0.8
0.6
OPTICAL DENSITY
0.4
0.2
0.0
0.00 0.05 0.10 0.15 0.20 0.25 0.30
ENERGY (
SLT : 0.620ms/line
mJ/dot)
Fig.4 Representative density curve
KD2003-DG12A
0.8
0.7
0.6
0.5
mJ/dot)
0.4
0.3
ENERGY (
0.2
0.1
0
012345
SCANNING LINE TIME (
Fig.5 Maximum energy curve
ms/line)
Fig.6 Thermistor curve
4/4
Appendix
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any
means without prior permission of ROHM CO.,LTD.
The contents described herein are subject to change without notice. The specifications for the
product described in this document are for reference only. Upon actual use, therefore, please request
that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM
CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any
third party's intellectual property rights or other proprietary rights, and further, assumes no liability of
whatsoever nature in the event of any such infringement, or arising from or connected with or related
to the use of such devices.
Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or
otherwise dispose of the same, no express or implied right or license to practice or commercially
exploit any intellectual property rights or other proprietary rights owned or controlled by
ROHM CO., LTD. is granted to any such buyer.
Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices
(such as audio visual equipment, office-automation equipment, communications devices, electrical
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level
of reliability and the malfunction of which would directly endanger human life (such as medical
instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers
and other safety devices), please be sure to consult with our sales representative in advance.
It is our top priority to supply products with the utmost quality and reliability. However, there is always a chance
of failure due to unexpected factors. Therefore, please take into account the derating characteristics and allow
for sufficient safety features, such as extra margin, anti-flammability, and fail-safe measures when designing in
order to prevent possible accidents that may result in bodily harm or fire caused by component failure. ROHM
cannot be held responsible for any damages arising from the use of the products under conditions out of the
range of the specifications or due to non-compliance with the NOTES specified in this catalog.
Thank you for your accessing to ROHM product informations.
More detail product informations and catalogs are available, please contact your nearest sales office.
ROHM Customer Support System
www.rohm.com
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Copyright © 2008 ROHM CO.,LTD.
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TEL : +81-75-311-2121
FAX : +81-75-315-0172
Appendix1-Rev2.0
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