KF2002-GP10A Printheads Compact low voltage thick film thermal printhead (8dots / mm) KF2002-GP10A A world first, ROHM offers the KF2002-GP10A of thermal printheads that allow operation using a single standard lithium ion battery: required voltage has been reduced to just 2.7V. Compact and lightweight they are ideal printheads for handheld printers and PDAs (personal digital assistants). !Applications Mobile printers FET-POS printers Hand-held printers Debit printers !Features 1) Using advanced LSI technology, ROHM has developed a dedicated low voltage driver chip. Compared with previous products, power consumption has been reduced by more than 30%. Because the print head circuits draw just 2.7 volts, the printer can be driven using a single lithium ion battery. 2) One rank resistance value of 123Ω ± 4% eliminates the inconvenience of rank selection. 3) The GP10 series has a resistance value of 123Ω and can be used in devices designed to operate with a single 3V lithium ion battery. !External dimensions (Units : mm) Max.1.7 54 (1.1) Dot #1 (7.35) Dot #384 Exposed Conductor Side No.21 No.1 M ax .φ 8. 0 (10) 1.4±0.3 MAX.12.5 48 (Effective Print Width) Insert Direction Connector 1/4 KF2002-GP10A Printheads !Equivalent circuit DOT #384 VH DOT #1 L-GND VDD 6 5 4 3 2 1 STB6 STB5 STB4 STB3 STB2 STB1 LAT LATCH REGISTER DI SHIFT REGISTER CLK DO THERMISTOR 30kΩ B:3950 TM TM Fig.1 !Pin assignments No. Circuit No. Circuit 1 VH 12 VDD 2 VH 13 STB4 3 DO 14 STB5 4 LAT 15 STB6 5 GND 16 GND 6 GND 17 GND 7 STB1 18 CLK 8 STB2 19 DI 9 STB3 20 VH 10 TM 21 VH 11 TM Note) The GND terminal 5 and 6 are not connected with the GND terminal 16 and 17. These terminals shall be connected each other at the closest point to the printhead. 2/4 KF2002-GP10A Printheads !Timing chart tw CLK CLOCK (CLK) t setup DI t hold DI DATA IN (DI) "High":BLACK "Low" :WHITE td DO DATA OUT (DO) "High":BLACK "Low" :WHITE t hold LAT t setup LAT LATCH (LAT) "High":HOLD "Low" :THROUGH tw LAT t setup STB STROBE (STB) tdo tdo DRIVER OUT Fig.2 !Characteristics Symbol Typical Unit Effective printing width − 48 mm Dot pitch − 0.125 mm Total dot number − 384 dots Rave 123 Ω VH 3.6 V Parameter Average resistance value Applied voltage Applied power PO 0.07 W/dot Print cycle SLT 2.5 ms Pulse width TON 2.01 ms Maximum number of dots energized simultaneously − 64 dots Maximum clock frequency − 8 MHz Maximum roller diameter − φ8.0 Running life / pulse life − 50/1×10 Operating temperature − 0~50 mm 8 km/pulses °C 3/4 KF2002-GP10A Printheads !Electrical characteristic curves 0.8 0.8 1.8 0.6 1.4 0.5 0.4 0.3 0.2 0.1 0 0 1 2 3 4 5 SCANNING LINE TIME (ms/line) SLT : 2.50ms/line 0.7 0.6 ENERGY (mJ/dot) 1.6 OPTICAL DENSITY ENERGY (mJ/dot) Paper : KF50-HDA (OJI) 0.7 1.2 1.0 0.8 0.6 0.4 0.3 0.4 0.2 0.2 0.1 0.0 0.00 0.05 0.10 0.15 0.20 0.25 0.30 ENERGY (mJ/dot) Fig.3 Adaptive speed chart 0.5 Fig.4 Representative density curve 0 0 1 2 3 4 5 SCANNING LINE TIME (ms/line) Fig.5 Maximum energy curve 180 160 RESISTANCE : (kΩ) 140 120 100 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