KD2008-CF10A Printheads Thick film thermal printhead (8 dots / mm) KD2008-CF10A The KD2008-CF10A is a A4-size thick-film thermal printhead, developed mainly for handy printers for personal computers. zApplications Plain-paper printers Low speed ticket vendors Measuring terminal printers zFeatures 1) A new pin connector structure greatly reduces the size and weight. 2) A newly developed 144-bit IC levels the strobe partition and reduces the noise level. 3) One rank resistance value of 1000Ω ± 3% eliminates provides good printing quality on rough paper. zDimensions (Unit : mm) 230.5±0.3 (HEATSINK WIDTH) 230 (SUBSTRATE WIDTH) 216 (EFFECTIVE PRINT WIDTH) Dot #1728 Dot #1 2.6±0.1 MAX.20.1 CL RESIN COATING FOR PROTECTION IC No.15 No.1 No.15 CONNECTOR.B No.1 (10.2) 5.1±0.2 CONNECTOR.A 5±0.2 220.5±0.2 2-M3 (EFFECTIVE DEPTH 3) CENTER OF HEAT ELEMENT 1/4 KD2008-CF10A Printheads zEquivalent circuit DOT #1728 DOT #1 VH VH GND GND #1728 #1297 #1296 #865 #864 #433 #432 #1 V DD /STB4 /STB1 /STB3 /STB2 LATCH REGISTER /LAT DI2 DI1 SHIFT REGISTER SHIFT REGISTER DO1 DO2 CLK TM THERMISTOR 30kΩ B : 3950K CONNECTOR B STB No. Dot No. Dots / STB. CONNECTOR A DI No. Dot No. Dots / DI 1 1 to 432 432 1 865 to 1728 864 2 433 to 864 432 2 1 to 864 864 3 865 to 1296 432 4 1297 to 1728 432 Fig.1 2/4 KD2008-CF10A Printheads zPin assignments CONNECTOR B CONNECTOR A No. Circuit No. Circuit 1 GND 1 VH 2 GND 2 VH 3 GND 3 VH 4 GND 4 VH 5 VDD 5 DI2 6 /STB3 6 DO2 7 /STB4 7 /LAT 8 CLK 8 /STB1 9 DI1 9 /STB2 10 DO1 10 TM 11 VH 11 GND 12 VH 12 GND 13 VH 13 GND 14 VH 14 GND 15 VH 15 GND zTiming chart tw CLK CLK (CLOCK) t set up DI DI (DATA IN) “High”:BLACK “Low”:WHITE t hold DI td DO t set up LAT t hold LAT min.10µs ∗ / LAT (LATCH) “High”:HOLD “Low”:THROUGH tw LAT t set up STB /STB (STROBE) t do t do 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). Fig.2 3/4 KD2008-CF10A Printheads zCharacteristics Symbol Parameter Typical Unit Effective printing width − 216 mm Dot pitch − 0.125 mm − 1728 dots Rave 1000 Ω Applied voltage VH 24.0 V Applied power PO 0.39 W / dot Print cycle SLT 1.25 ms Pulse width TON 0.47 ms Maximum number of dots energized simultaneously − 864 dots Maximum clock frequency − 16 MHz Maximum roller diameter − φ20.0 mm Running life / pulse life − 50 / 1×108 km / pulses Operating temperature − 5 to 45 °C Total dot number Average resistance value zElectrical characteristic curves 0.8 0.8 1.8 Paper : KF50-HDA (OJI) 1.6 0.7 0.7 1.4 0.5 0.4 0.3 0.2 0.6 ENERGY (mJ/dot) OPTICAL DENSITY 0.6 ENERGY (mJ/dot) SLT : 1.25ms/line 1.2 1.0 0.8 0.6 1 2 3 5 4 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 0.3 0.1 0.2 0 0 0.4 0.2 0.4 0.1 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 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-Rev1.1