Page 1
SE3002-DC70A
Printheads Under development
High speed thermal printhead
(with thermal historical control)
SE3002-DC70A
High speed, high quality, and high durability are achieved by using step free structure with high performance partial glaze
and highly conductive overcoat la yer. SE300*-DC70A series are lined up which can accommodate with all types of
barcode labeling printers from Direct to Thermal Transfer, normal to high speed (over 300mm/s).
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) High-hardness protect cote type “W-coat” is employed with 150km abrasion life-time.
3) A built in history-control functionality, high-speed printing up to 300mm / s can be ac hieved at 300dpi wit h clear print
image.
zExternal dimensions (Unit : mm)
DOT No.640
(5.896)
34.0±0.5
MAX.51
#2
#1
(3.5)
CONNECTOR A
66±0.5
54.208
#20
#19
#4 #1
CONNECTOR B
DOT No.1
Max.
TYPE OF PRINTHEAD
20
φ
MAX.4.5
6±0.5
BU9630
φ3 H10 Length 4
MAX.11
40±0.3 (13)
20±0.3
7.104±0.3
M3
17.8±0.2
7.3±0.3
φ3 H10
Effective Depth 3
Effective Depth 3
1/3
Page 2
SE3002-DC70A
Printheads Under development
zEquivalent circuit
VH (COM)
GND
VDD (+5)
/ STB2
/ STB1
BEO
/ RESET
CLK (CP)
/ LOAD
START
INC
220µF
35V
0.1µF
50V
DI
DOT #640 DOT #1
LATCH REGISTER
TO EACH IC
SEL2
SEL1
TM
TM
DI No.
DOT No.
DI 640 to 1
/ STB No.
/ STB2
/ STB1
THERMISTOR
30kΩ B: 3950
DOT No.
640 to 385
384 to 1
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
DI
CLK(CP)
START
N.C.
SEL1
/ STB 2
TM
SENS1
SENS3
No.
1
3
Circuit
VH (COM)
GND
No.
2
4
Circuit
VH (COM)
GND
2/3
Page 3
SE3002-DC70A
Printheads Under development
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
−
−
−
−
−
54.2
0.0847
640
850
24
0.59
0.28
640
8
φ20
150/(1×10
5 to 45
8
)
mm
mm
dots
Ω
V
W/dot
ms
dots
MHz
mm
km/pulses
°C
3/3
Page 4
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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