KF2003-GD45A Printheads Compact medium speed thick film thermal printhead (8 dots / mm) KF2003-GD45A Using its expertise in LSI technology, ROHM has developed new high density driver chips for use in the KF2003-GD45A . Capable of being employed for both thermal and thermal transfer printing, with a print speed of 200mm/s, the resulting print heads are the fastest in their class. This 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. !Applications POS printers ATM printers KIOSK printers Ticket printers !Features 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 200mm/s with using thermal history control, the fastest in its class. 2) Standard printheads in the line up are capable of 203 or 300 dpi. They achieve the high resolution needed for graphics and other complex print patterns. 3) One rank resistance value of 800Ω ± 3% eliminates the inconvenience of rank selection. 4) 2-inch, 3-inch and 4-inch series are available. !External dimensions (Units : mm) 65 5.1±0.4 56 (EFFECTIVE PRINT WIDTH) 4±0.2 DOT #1 Ma x.φ 2 0.0 2.6±0.1 Max.20 DOT #448 NO.15 NO.1 NO.15 NO.1 5±0.2 55±0.2 5.1±0.1 (10.2) CONNECTOR B CONNECTOR A 2−M3 (EFFECTIVE DEPTH 3) 1/4 KF2003-GD45A Printheads !Equivalent circuit 12,13,14,15 VH DOT #640 DOT #1 1,2,3,4, 5 GND 5 4 3 2 1,2,3,4 VH 12,13,14,15 GND 9 STB1 1 STB5 9 10 STB2 STB4 8 11 STB3 LATCH REGISTER 11 DI SHIFT REGISTER NC 10 TM 6 TM 7 6 LAT 5 7 DO CLK 8 VDD THERMISTOR 30kΩ B3950 CONNECTOR B CONNECTOR A Fig.1 !Pin assignments CONNECTOR A No. Circuit CONNECTOR B No. Circuit 1 VH 1 GND 2 VH 2 GND 3 VH 3 GND 4 VH 4 GND 5 DO 5 GND 6 LAT 6 TM 7 CLK 7 TM 8 VDD 8 STB4 9 STB1 9 STB5 10 STB2 10 N.C. 11 STB3 11 DI 12 GND 12 VH 13 GND 13 VH 14 GND 14 VH 15 GND 15 VH 2/4 KF2003-GD45A 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 setup LAT t hold LAT LATCH (LAT) “High”:HOLD “Low” :THROUGH tw LAT t setup STB STROBE (STB) tdo tdo DRIVER OUT Fig.2 !Characteristics Parameter Symbol Typical Unit Effective printing width − 80 mm Dot pitch − 0.125 mm − 640 dots Rave 800 Ω Total dot number Average resistance value Applied voltage VH 24 V Applied power PO 0.63 W/dot Print cycle SLT 1.25 ms Pulse width TON 0.275 ms Maximum number of dots energized simultaneously − 384 dots Maximum clock frequency − 8 MHz Maximum roller diameter − φ20 Running life / pulse life − 50/5×10 Operating temperature − 5~45 mm 7 km/pulses °C 3/4 KF2003-GD45A Printheads !Electrical characteristic curves 0.8 0.6 1.4 0.5 0.4 0.3 0.2 SLT : 1.25ms/line 0.7 0.6 ENERGY (mJ/dot) 1.6 OPTICAL DENSITY ENERGY (mJ/dot) 0.8 1.8 Paper : KF50-HDA (OJI) 0.7 1.2 1.0 0.8 0.6 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 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 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