SH2004-DC90A
Printheads
Near edge thermal printhead
(8dots / mm)
SH2004-DC90A
SH-DC90 series was developed with two key structures step-free and near edge for the packaging printer market which
requires high speed continuous printing. It is suitable for printers in factory line where high speed 24 hours continuous
printing is required.
zApplications
Bar code printers
Card printers
Ticket printers
General purpose compact printers
zFeatu res
1) ROHM new technology “STEP FREE” structure will provide, high corrosion resistance, better resistance against
scratching damage, high ef ficiency.
2) Inclined toward the printing surface to provide excellent printing qu ality even for cards and thick pap er .
3) Prints directly on printing mediu m that cannot be bent.
4) Using a hard conductive film as a protective film on the heating element offers excellent resistance to electrostatic
Damage.
5) Being low-profile w hen installe d enables smal ler printers.
6) Compatible with the SH3004-DC90A (300dpi) in mechanical specifications, to facilitate the making of a series of
printers.
zExternal dimensions (Unit : mm)
124±0.5
112 (EFFECTIVE PRINT WIDTH)(6)
DOT #896 DOT #1
Max. 51
#2 #20
#1
HIROSE HIF3FC-20PA-2.54DS
φ3H10
EFFECTIVE DEPTH 3
2.8±0.2
7.3±0.3
17.8±0.2
16±0.2
(22)
Note: No heat history control function inside the thermal printhead. External heat history control is required for high speed printing.
10±0.2
40±0.3
100±0.2
80±0.3
#19
#6 #1
JST B6PS-VH
3−M3
EFFECTIVE DEPTH 3
Max. 5
φ3H10 LENGTH 4
EFFECTIVE DEPTH 3
25±0.5
(21.3)
DOT #1
Paper feed
direction
6±0.5
Max. 12
1/5
SH2004-DC90A
Printheads
zCharacteristics
Parameter
Effective printing width
Dot pitch
Total dot number
Average resistance value
Applied voltage
Applied power
Print cycle
Maximum number of dots energized simultaneously
Maximum clock frequency
Maximum roller diameter
Running life / pulse life
Operating temperature
zPin configuration
HIROSE JST
CircuitNo.
1
3
5
7
9
11
13
15
17
19
V
DD
GND
N.C.
LA
GND
N.C.
DD
V
STB1
TM
SENS2
10
12
14
16
18
20
2
4
6
8
BEO
DI2
CLK
GND
DI1
GND
STB2
TM
SENS1
SENS3
Symbol Typical Unit
−
−
−
Rave
V
H
P
O
SLT
−
−
−
−
−
CircuitNo.No. Circuit
1
2
3
4
5
6
VH
VH
VH
GND
GND
GND
112
0.125
896
550
24
0.91
0.42
896
10
−
50 / 10
5 to 45
8
mm
mm
dots
Ω
V
W / dot
ms
dots
MHz
mm
km / pulses
°C
2/5
SH2004-DC90A
Printheads
zTiming chart
t3
CLK
t1 t2
DI
BEO
CLK
STBn
DRIVER
OUT
t5 t4
LA
t6 t7
t8 t8
Fig.1
3/5
SH2004-DC90A
Printheads
zEquivalent circuit
VH (COM)
V
GND
BEO
/STB2
/STB1
220µF
35V
#896 #449 #448 #1
DD
0.1µF
50V
DOT#1DOT#896
/LAT
CLK
DI2
DI1
SENS1
SENS2
SENS3
TM
TM
SHIFT
REGISTER
DI No.
DI2 STB 2
DI1 448 to 1
DOT No.
896 to 449
STB No. DOT No.
STB 1
Fig. 2
LATCH REGISTER
SHIFT
REGISTER
896 to 449
448 to 1
4/5
SH2004-DC90A
Printheads
zElectrical characteristics curves
1.5
1.4
1.2
1.0
0.8
0.6
OPTICAL DENSITY
0.4
0.2
0.0
0.060 0.100 0.150 0.200 0.250
ENERGY (
mj / dot)
Fig. 3 Representative density curve
1.0
0.9
0.8
0.7
mJ / dot)
(
0.6
(MAX)
0.5
0.4
0.3
0.2
SUPPLY ENERGY
0.1
0.0
0 1.0 2.0 3.0 4.0 5.04.53.52.51.50.5
SCANNING LINE TIME (
ms / line)
Fig. 4 Maximum energy curve
180
160
140
(kΩ)
120
100
80
60
40
RESISTANCE VALUE :
20
0
−100 10203040506070
TEMPERATURE : (°C)
Fig. 5 Thermistor curve
R25=30kΩ
B=3950k
5/5
Appendix
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.
Notes
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 with 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.
About Export Control Order in Japan
Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control
Order in Japan.
In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause)
on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
Appendix1-Rev1.1
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