SH2004-DC70A
Printheads
Near edge thermal printhead
(with thermal historical control)
SH2004-DC70A
SH-DC70 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 printer
Label printer
Packaging printer
ATM
Ticket printer
zFeatures
1) ROHM new technology “STEP FREE” structure will provide, high corrosion resistance, better resistance against
scratching damage, high ef ficiency.
2) Head inclination by near-edge structure, applicable to the la rge -size pl aten. Re sin ty pe therma l-tran sfe r ink-ribb on can
be used.
3) High-hardness protect cote type “W-coat” is employed with 150km abrasion life-time.
4) A buil t in history-contro l functionality, high-speed printing up to 300mm / s can be achieved w ith clear print image.
zExternal dimensions (Unit : mm)
Type of PRINTHEAD
φ3 H10
Effective Depth 3
MAX.56
124±0.5
(Effective print width)
40±0.3
104
#20
#19
100±0.2
80±0.3
#1#6
CONNECTOR:B
(10)
#2
CONNECTOR:A
#1
10±0.2
(43)
0.5
±
31.0
(12±0.3)
DOT No.1
5.7
3-M3
Effective Depth 3
0.2
±
0.2
±
0.3
±
20.45
2.8
7.3
φ3 H10 Length 4
Effective Depth 3
DOT No.1
°
Max.5.5
(Typ.)
(21.2)
6±0.5
Print Direction
Max.12
1/3
SH2004-DC70A
Printheads
zEquivalent circuit
VH (COM)
GND
VDD (+5)
/ STB2
/ STB1
BEO
/ RESET
CLK (CP)
/ LOAD
START
INC
220µF
35V
0.1µF
50V
DI
DOT #832 DOT #1
LATCH REGISTER
TO EACH IC
SEL2
SEL1
TM
TM
DI No.
DI2 832 to 449
DI1 448 to 1
DOT No.
/ STB No.
/ STB2
/ STB1
zPin assignments
CONNECTOR A CONNECTOR B
No.
1
3
5
7
9
11
13
15
17
19
Circuit
V
DD
GND
GND
/LOAD
INC
SEL2
/RESET
/ STB 1
TM
SENS2
No.
2
4
6
8
10
12
14
16
18
20
Circuit
BEO
DI2
CLK(CP)
START
DI1
SEL1
/ STB 2
TM
SENS1
SENS3
No.
Circuit
1
VH (COM)
V
H
3
56
(COM)
GND
THERMISTOR
30kΩ B: 3950
DOT No.
832 to 449
448 to 1
No.
2
4
Circuit
VH (COM)
GND
GND
2/3
SH2004-DC70A
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
Symbol Typical Unit
−
−
−
Rave
V
H
PO
SLT
−
−
−
−
−
104.0
0.125
832
550
24
0.86
0.49
832
8
φ50
150/(1×10
5 to 45
8
)
mm
mm
dots
Ω
V
W/dot
ms
dots
MHz
mm
km/pulses
°C
3/3
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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