KD2008-AF10A Printheads Thick film thermal printhead (8dots / mm) KD2008-AF10A The KD2008-AF10A is a A4-size thick-film thermal printhead, developed mainly for plain-paper fax machines and portable printers. The makes conversion of printers from thermal transfers to direct thermal easier. zApplications Plain-paper facsimiles Portable printers Low speed ticket vendors Measuring terminal printers zFeatures 1) Providing easy design solution of power supply with the same bit number for each strobe at A4 size FAX application by employing the first in the industry 216 bits Driver IC. 2) Achieved Logic voltage of 3.13 to 5.25V and provides the wide range of power supply voltage. Wide selection of electrical components is able to choose. 3) Employment of ROHM’s own technology clip connector makes it possible to supply the goods without heat sink and substrate it self. This allows wide range of designing since substrate could be directly attached to the mechanism. zExternal dimensions (Unit : mm) 230.5 + − 0.3 (HEATSINK WIDTH) Max. 8.5 5.85 + − 0.3 4.85 + − 0.2 DOT #1728 DOT #1 Ma x. 14 .0 16 + − 0.2 15.1 + −1 230 (SUBSTRATE WIDTH) 216 (EFFECTIVE PRINT WIDTH) LABEL No.9 No.1 CONNECTOR B Resin coating for protection of pin Resin coating for protection of IC No.9 No.1 CONNECTOR A 4.6 + − 0.2 2.6 + − 0.1 CENTER OF HEAT ELEMENTS 5+ − 0.2 11.5 + − 0.1 220.5 + − 0.2 11.5 + − 0.1 4-M3 1/4 KD2008-AF10A Printheads zEquivalent circuit VH 8,9 GND 1,2 STB4 STB3 DOT #1728 DOT #1 1,2 VH 8,9 GND 5 6 STB1 6 5 STB2 4 LAT 3 CLK 7 TM 12 9 4 LATCH REGISTER 7 DI 1 SHIFT REGISTER VDD 4 TM 3 THERMISTOR 30kΩ B3950 CONNECTOR B CONNECTOR A Fig.1 zPin assignments CONNECTOR B CONNECTOR A No. Circuit No. Circuit 1 GND 1 VH 2 GND 2 VH 3 TM 3 CLK 4 VDD 4 LAT 5 STB4 5 STB2 6 STB3 6 STB1 7 DI 7 TM 8 VH 8 GND 9 VH 9 GND 2/4 KD2008-AF10A Printheads zTiming chart tw CLK CLOCK (CLK) t setup DI t hold DI DATA IN (DI) “HIGH”:BLACK “LOW” :WHITE t setup LAT t hold LAT LATCH (LAT) “HIGH”:HOLD “LOW” :THROUGH tw LAT t setup STB STROBE (STB) tdo tdo DRIVER OUT Fig.2 zCharacteristics Parameter Symbol Typical Unit Effective printing width − 216.0 mm Dot pitch − 0.125 mm Total dot number Average resistance value Applied voltage − 1728 dots Rave 3000 Ω VH 24.0 V PO 0.17 W/dot Print cycle SLT 10 ms Pulse width Applied power TON 1.95 ms Maximum number of dots energized simultaneously − 432 dots Maximum clock frequency − 4 MHz Maximum roller diameter − 14.0 mm Running life / pulse life − 30/3+ 107 km/pulses Operating temperature − 5 to 45 °C 3/4 KD2008-AF10A Printheads zElectrical characteristic curves 1.4 0.5 1 SLT : 10ms/line 0.9 0.45 1.2 0.8 0.35 0.3 0.25 0.2 0.15 1 ENERGY (mJ/dot) OPTICAL DENSITY ENERGY (mJ/dot) 0.4 0.8 0.6 0.4 0.6 0.5 0.4 0.3 0.2 0.1 0.2 0.1 0.05 0 0.7 0 4 6 8 10 12 14 16 18 20 22 0.1 0.2 0.3 0.4 0.5 0 0 5 10 15 SCANNING LINE TIME (ms/line) ENERGY (mJ/dot) SCANNING LINE TIME (ms/line) Fig.3 Adaptive speed chart Fig.4 Representive density curve Fig.5 Maximum energy curve 20 180 160 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