KF3008-GD34A Printheads High speed thick film thermal printhead (11.8 dots / mm) KF3008-GD34A Using its expertise in LSI technology, ROHM has developed new high density driver chips for use in the KF3008-GD34A . Capable of being employed for both thermal and thermal transfer printing, with a print speed of 100mm/s, the resulting print heads are the fastest in their class. The high-speed and high-density printing answers the needs of POS, ATM, KIOSK, and ticket printing devices, which are increasingly being called upon to produce graphical output. zApplications Label printers ATM printers KIOSK printers Ticket printers zFeatures 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 100mm/s with using thermal history control, the fastest in its class. 2) Standard printheads in the line up are capable of 300dpi. They achieve the high resolution needed for graphics and other complex print patterns. zExternal dimensions (Unit : mm) 230.5±0.3 (Heatsink width) 230 (Substrate width) 216.832 (Effective print width) (9) Dot #2560 Dot #1 2.6±0.1 MAX.23.6 CL .0 25 .φ ax M No.15 No.1 No.15 No.1 CONNECTOR.B No.1 No.15 CONNECTOR.A 6.1±0.2 (14) CONNECTOR.C 96±0.2 (12.25) 206±0.2 5-M3(Effective depth 3) Center of heat element 1/4 KF3008-GD34A Printheads zEquivalent circuit VH DOT #2560 ··· GND 20 DOT #1 ··· ··· ··· 16 ··· 15 ··· ··· ··· 11 ··· 10 ··· ··· ··· 6 ··· 5 VH ··· ··· 1 GND V DD V DD STB4 STB1 LAT LATCH REGISTER CLK SHIFT REGISTER SHIFT REGISTER SHIFT REGISTER SHIFT REGISTER DI4 DO4 DI1 DO1 DI3 DI2 DO3 DO2 CONNECTOR C CONNECTOR A THERMISTOR 30kΩ B:3950 STB3 GND TM TM STB2 CONNECTOR B 2/4 KF3008-GD34A Printheads zPin assignments CONNECTOR A CONNECTOR C CONNECTOR B No. Circuit No. Circuit No. Circuit 1 VH 1 GND 1 GND 2 VH 2 GND 2 GND 3 VH 3 GND 3 STB4 4 VH 4 GND 4 CLK 5 VH 5 GND 5 VDD 6 VH 6 NC 6 DO3 7 DO1 7 STB2 7 DI3 8 DI1 8 TM 8 DO4 9 DO2 9 TM 9 DI4 10 DI2 10 STB3 10 VH 11 VDD 11 GND 11 VH 12 LAT 12 GND 12 VH 13 STB1 13 GND 13 VH 14 GND 14 GND 14 VH 15 GND 15 GND 15 VH zTiming chart tw CLK CLOCK (CLK) t setup DI DATA IN (DI) "High":BLACK "Low" :WHITE t hold DI 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 3/4 KF3008-GD34A Printheads zCharacteristics Symbol Typical Unit Effective printing width − 216.832 mm Dot pitch − 0.0847 mm Total dot number − 2560 dots Rave 660 Ω VH 24 V Parameter Average resistance value Applied voltage Applied power PO 0.52 W/dot Print cycle SLT 1.11 ms Pulse width TON 0.27 ms Maximum number of dots energized simultaneously − 1280 dots Maximum clock frequency − 8 MHz Maximum roller diameter − φ25.0 Running life / pulse life − 50/5×10 km/pulses Operating temperature − 5~45 °C mm 7 zElectrical characteristic curves 0.8 0.8 1.8 1.6 0.6 1.4 0.5 0.4 0.3 0.2 SLT : 1.11ms/line 0.7 0.6 ENERGY (mJ/dot) 0.7 OPTICAL DENSITY ENERGY (mJ/dot) Paper : 140LAB (RICOH) 1.2 1.0 0.8 0.6 0 0 1 2 3 5 4 SCANNING LINE TIME (ms/line) 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 0.00 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