SH2002-DC90A
Printheads
Near edge thermal printhead
(8dots / mm)
SH2002-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 efficiency.
2) Inclined toward the printing surface to provide excellent printing quality even for cards and thick paper.
3) Prints directly on printing medium 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) Compatible with the SH3002-DC90A (300dpi) in mechanical specifications, to facilitate the making of a series of
printers.
zDimensions (Unit : mm)
DOT #448
(5)
#2 #20
φ3H10
EFFECTIVE DEPTH 3
0.3
±
7.3
20.555±0.2
8±0.3
Note: No heat history control function inside the thermal printhead. External heat history control is required for high speed printing.
66±0.5
56
(EFFECTIVE PRINT WIDTH)
Max. 51
#1
(13)
#19
HIROSE HIF3FC-20PA-2.54DS
±
0.3
20
40±0.3
DOT #1
Paper feed direction
Max. 5
#4 #1
JST B4PS-VH
φ3H10 LENGTH 4
EFFECTIVE DEPTH 3
0.5
±
(21.3)
25
DOT #1
M3
EFFECTIVE DEPTH 3
6
±
0.5
Max. 12
Rev.A 1/5
SH2002-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.
LAT
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
VH
VH
GND
GND
56
0.125
448
550
24
0.86
0.42
448
10
−
150 / 1x10
5 to 45
8
mm
mm
dots
Ω
V
W / dot
ms
dots
MHz
mm
km / pulses
°C
Rev.A 2/5
SH2002-DC90A
I
Printheads
zTiming chart
CLK
(CLOCK)
tw C LK
DI(DATA IN)
"High":BLACK
"LOW" : W H I TE
BEO
/LAT
(LATCH)
" High": HOLD
"LOW" : TH R O U GH
ｎ
/STB
(STROBE)
t setup D
t ho ld DI
t setu p LAT t ho ld LAT
tw LAT t setup STB
min.12.5μsec
(Max. tdo)*
tdo
tdo
DRIVER
OUT
*If delay time for Driver Out can not be secured enough, there is a possibility that VH would fluctuate
greatly. Please design the circuit so that VH does not exceed peak voltage (Vp).
Rev.A 3/5
SH2002-DC90A
Printheads
zEquivalent circuit
VH (COM)
V
GND
BEO
/STB2
/STB1
220µF
35V
#448 #193 #192 #1
DD
0.1µF
50V
DOT#1DOT#448
/LAT
CLK
DI2
DI1
SENS1
SENS2
SENS3
TM
TM
DI No.
DI2
DOT No.
448 to 193
DI1 192 to 1
SHIFT
REGISTER
Fig. 2
LATCH REGISTER
THERMISTOR
30kΩ B:3950K
STB No.
STB 2
STB 1
SHIFT
REGISTER
DOT No.
448 to 193
192 to 1
Rev.A 4/5
SH2002-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
mJ / dot)
ENERGY (
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=30k
B=3950k
Ω
Rev.A 5/5
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
THE AMERICAS / EUPOPE / ASIA / JAPAN
Contact us : webmaster@ rohm.co. jp
Copyright © 2007 ROHM CO.,LTD.
21, Saiin Mizosaki-cho, Ukyo-ku, Kyoto 615-8585, Japan
TEL : +81-75-311-2121
FAX : +81-75-315-0172
Appendix1-Rev2.0
Loading...