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KF3002-GD31A
Printheads
Compact high speed thick film thermal printhead (12 dots / mm)
KF3002-GD31A
Using its expertise in LSI technology, ROHM has developed new high density driver chips for use in the KF3002-GD31A . Capable of being employed for both thermal and thermal transfer printing, with a print speed of 200mm/s, the resulting print heads are the fastest in their class. The high-speed and high-density printing answers the needs of ATM, kiosk and ticket printing devices, which are increasingly being called upon to produce graphical output. !Applications Label printers Ticket printers Terminal printers
!Features 1) The use of a special partial glaze and the latest heating element structure, along with new high-density driver chips that can accept big current, has allowed ROHM to achieve print speeds of 200mm/s with using thermal history control, the fastest in its class. 2) One rank resistance value of 1250 3% eliminates the inconvenience of rank selection. 3) 2-inch, 3-inch and 4-inch series are available.
!External dimensions (Units : mm)
65 54.208 (EFFECTIVE PRINT WIDTH) DOT #640 DOT #1 5.10.4 40.2
Max. 20
2.60.1
NO. 15
NO. 1
NO. 15
NO. 1
CONNECTOR B CONNECTOR A 2-M3 (EFFECTIVE DEPTH 3)
(10.2)
50.2
550.2
5.10.1
1
8.0
1/4
KF3002-GD31A
Printheads
!Equivalent circuit
VH GND DOT #640 DOT #1 VH GND
VDD
5
4
3
2
1
STB1
STB4
STB2
STB3
LATCH REGISTER DI2 DO2
LAT CLK DO1 DI1
SHIFT REGISTER
SHIFT REGISTER
TM TM
THERMISTOR 30k B:3950
CONNECTOR B
CONNECTOR A
STB No. 1 2 3 4
Dot No. 1 256 257 384 385 512 513 640
dots / STB 256 128 128 128
DI No. 1 2
Dot No. 1 384 385 640
dots / STB 384 256
Fig.1
2/4
KF3002-GD31A
Printheads
!Pin assignments
CONNECTOR B No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Circuit GND GND GND GND STB3 STB4 VDD TM TM DO2 DI2 VH VH VH VH CONNECTOR A No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Circuit VH VH VH VH DI1 DO1 LAT CLK STB1 STB2 GND GND GND GND GND
!Timing chart
tw CLK CLOCK (CLK)
t setup DI DATA IN (DI) "High":BLACK "Low" :WHITE DATA OUT (DO) "High":BLACK "Low" :WHITE
t hold DI
td DO
t setup LAT LATCH (LAT) "High":HOLD "Low" :THROUGH tw LAT STROBE (STB)
t hold LAT
t setup STB
tdo DRIVER OUT
tdo
Fig.2
3/4
KF3002-GD31A
Printheads
!Characteristics
Parameter Effective printing width Dot pitch Total dot number Average resistance value Applied voltage Applied power Print cycle Pulse width Maximum number of dots energized simultaneously Maximum clock frequency Maximum roller diameter Running life / pulse life Operating temperature Symbol - - - Rave VH PO SLT TON - - - - - Typical 54.208 0.0847 640 1250 24 0.42 0.82 0.308 640 8 18.0 50/5x10 5~45
7
Unit mm mm dots V W/dot ms ms dots MHz mm km/pulses C
!Electrical characteristic curves
0.8 Paper : KF50-HDA (OJI) 0.7 0.6
ENERGY (mJ/dot) OPTICAL DENSITY
1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2
ENERGY (mJ/dot)
0.8
SLT : 0.82ms/line
0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 0 1 2 3 4 5
0.5 0.4 0.3 0.2 0.1 0 0 1 2 3 4 5
0.0 0.00
0.05
0.10
0.15
0.20
0.25
0.30
SCANNING LINE TIME (ms/line)
ENERGY (mJ/dot)
SCANNING LINE TIME (ms/line)
Fig.3 Adaptive speed chart
Fig.4 Representative density curve
Fig.5 Maximum energy curve
180 160 140
RESISTANCE : (k)
120 100 80 60 40 20 0 -20 -10 0 10 20 30 40 50 60 70
TEMPERATURE : (C)
Fig.6 Thermistor curve
4/4
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 use silicon as a basic material. 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 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-Rev1.0

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