KF2004-GF60A Printheads Compact low voltage thick film thermal printhead (8dots / mm) KF2004-GF60A KF2004-GF60A of low voltage thermal printheads have a 1.25-mm pitch connectors and reduced power supply circuit voltage requirements. This makes them useful for a wide range of applications, including CAT, FET-POS and naturally, handheld devices that demand printer heads which can operate with low supplied voltage. zApplications Mobile printers FET-POS printers Hand-held printers Debit printers zFeatures 1) Both the circuit voltage and the voltage required during printing are 3.3V ; this allows the design of complete printer assemblies with energy-saving low power consumption. 2) KF2004-GF60A has a resistance value of 176Ω and can take a maximum current of 8.5V for printing. This is useful in applications where the peak voltage is restricted. 3) Because the connectors accept 1.25-mm pitch FFC (full flat cables) it is possible to reduce the size of printer mechanism control boards. 4) 2-inch, 3-inch and 4-inch series are available. zExternal dimensions (Unit : mm) Max.1.7 (1.1) Dot #1 (11.35) Dot #832 x. φ1 4.0 Exposed Conductor Side No.28 No.1 Ma 2.1±0.3 Max.16.5 117 104 (Effective Print Width) Insert Direction Connector 1/4 KF2004-GF60A Printheads zEquivalent circuit VH L-GND P-GND STB7 STB6 STB2 STB1 AEO2 AEO1 LAT DI CLK DO VDD TM TM 1,2,3,26,27,28 DOT #832 DOT #1 18 13,14,15,16,17 13 12 11 3 2 1 24 23 9 8 20 19 5 LATCH REGISTER 25 SHIFT REGISTER 6 4 7 THERMISTOR 30kΩ B:3950 11 12 Fig.1 zPin assignments No. Circuit No. Circuit 1 VH 15 P-GND 2 VH 16 P-GND 3 VH 17 P-GND 4 L-GND DO 18 5 LAT 19 AEO1 6 CLK 20 AEO2 7 VDD 21 STB4 8 STB1 22 STB5 9 STB2 23 STB6 10 STB3 24 STB7 11 TM 25 DI 12 TM 26 VH 13 P-GND 27 VH 14 P-GND 28 VH L-GND : LOGIC GROUND P-GND : POWER GROUND 2/4 KF2004-GF60A Printheads zTiming 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) AEO tdo tdo DRIVER OUT Fig.2 zCharacteristics Parameter Symbol Typical Unit Effective printing width − 72 mm Dot pitch − 0.125 mm Total dot number − 832 dots Rave 176 Ω VH 7.2 V Average resistance value Applied voltage Applied power PO 0.24 W/dot Print cycle SLT 1.25 ms Pulse width TON 0.55 ms Maximum number of dots energized simultaneously − 64 dots Maximum clock frequency − 8 MHz Maximum roller diameter − φ14.0 Running life / pulse life − 100/2×10 km/pulses Operating temperature − 0~50 °C mm 8 3/4 KF2004-GF60A Printheads zElectrical characteristic curves 0.8 1.8 0.8 Paper : KF50-HDA (OJI) 0.7 1.4 0.5 0.4 0.3 0.6 ENERGY (mJ/dot) OPTICAL DENSITY 0.6 ENERGY (mJ/dot) SLT : 1.25ms/line 1.6 0.7 1.2 1.0 0.8 0.6 0.5 0.4 0.3 0.2 0.4 0.2 0.1 0.2 0.1 0 0 1 2 3 4 5 SCANNING LINE TIME (ms/line) 0.0 0.00 0.05 0.10 0.15 0.20 0.25 0.30 ENERGY (mJ/dot) Fig.3 Adaptive speed chart 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