ROHM SH2002

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
zFeatures
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)
66±0.5
56
(EFFECTIVE PRINT WIDTH)
6±0.5
DOT #1
Pape
Max. 51
r feed
directi
(5)
on
DOT #448
Max. 5
#2
#20
#1
#19
#1
JST B4PS-VH
HIROSE HIF3FC-20PA-2.54DS
φ3H10
EFFECTIVE DEPTH 3
φ3H10 LENGTH 4
EFFECTIVE DEPTH 3
(21.3)
8±0.3
(13)
20±0.3
40±0.3
25±0.5
7.3±0.3
20.555±0.2
#4
Max. 12
DOT #1
M3
EFFECTIVE DEPTH 3
Note: No heat history control function inside the thermal printhead. External heat history control is required for high speed printing.
Rev.A
1/5
SH2002-DC90A
Printheads
zCharacteristics
Parameter
Symbol
Typical
Unit
mm
Effective printing width
−
56
Dot pitch
−
0.125
mm
Total dot number
−
448
dots
Rave
550
Ω
VH
24
V
Average resistance value
Applied voltage
Applied power
PO
0.86
W / dot
SLT
0.42
ms
Maximum number of dots energized simultaneously
−
448
dots
Maximum clock frequency
−
10
MHz
Maximum roller diameter
−
−
mm
Running life / pulse life
−
150 / 1x108
km / pulses
Operating temperature
−
5 to 45
°C
Print cycle
zPin configuration
HIROSE
JST
No.
Circuit
No.
Circuit
No.
Circuit
1
VDD
2
BEO
1
VH
3
GND
4
DI2
2
VH
5
N.C.
6
CLK
3
GND
7
LAT
8
GND
4
GND
9
GND
10
DI1
11
N.C.
12
GND
13
VDD
14
STB2
15
STB1
16
TM
17
TM
18
SENS1
19
SENS2
20
SENS3
Rev.A
2/5
SH2002-DC90A
Printheads
zTiming chart
tw CLK
CLK
(CLOCK)
t setup DI
t hold DI
DI(DATA IN)
"High":BLACK
"LOW" :WHITE
BEO
t setup LAT
t hold LAT
min.12.5 μsec
(Max. tdo)*
/LAT
(LATCH)
"High": HOLD
"LOW" : THROUGH
tw LAT
t setup ST B
/STBn
(STROBE)
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
DOT#448
DOT#1
VH (COM)
220µF
35V
#448
#193
#192
#1
VDD
0.1µF
50V
GND
BEO
/STB2
/STB1
LATCH REGISTER
/LAT
CLK
SHIFT
REGISTER
DI2
SHIFT
REGISTER
DI1
SENS1
SENS2
THERMISTOR
SENS3
TM
30kΩ
B:3950K
TM
DI No.
DOT No.
STB No.
DI2
448 to 193
STB 2
448 to 193
DI1
192 to
STB 1
192 to
1
DOT No.
1
Fig. 2
Rev.A
4/5
SH2002-DC90A
Printheads
zElectrical characteristics curves
OPTICAL DENSITY
1.2
1.0
0.8
0.6
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
180
0.9
160
RESISTANCE VALUE : (kΩ)
SUPPLY ENERGY (MAX) (mJ / dot)
1.5
1.4
0.8
0.7
0.6
0.5
0.4
0.3
0.2
R25=30kΩ
B=3950k
140
120
100
80
60
40
20
0.1
0.0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
SCANNING LINE TIME (ms / line)
Fig. 4 Maximum energy curve
0
−10
0
10
20
30
40
50
60
70
TEMPERATURE : (°C)
Fig. 5 Thermistor curve
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
Copyright © 2007 ROHM CO.,LTD.
THE AMERICAS / EUPOPE / ASIA / JAPAN
Contact us : [email protected] rohm.co. jp
21, Saiin Mizosaki-cho, Ukyo-ku, Kyoto 615-8585, Japan
TEL : +81-75-311-2121
FAX : +81-75-315-0172
Appendix1-Rev2.0