KF2003-GR40A Printheads Compact medium speed thick film thermal printhead (8dots / mm) KF2003-GR40A The KF2003-GR40A is ideal for applications that require compact, lightweight thermal printheads, such as POS and label printer applications. The 2-, 3-, and 4-inch sizes have a resolution of 203dpi. This series is suitable for a wide range of applications. !Applications POS printers Label printers Receipt printers General purpose compact printers !Features 1) Both ROHM’s advanced LSI technology and proprietary partial glaze are used to realize higher printing efficiency. With a high print speed of 100mm/s, this series is also suitable for thermal transfer printing. 2) Besides the fact that harness-type direct connectors at either end allow wring to be fitted as convenient, the thermal printheads can be applied directly to the substrate without a heat sink. Both these features give engineers greater freedom when designing the printer mechanism. 3) One rank resistance value of 800Ω ± 3% eliminates the inconvenience of rank selection. !External dimensions (Units : mm) Max.1.7 5.85 83 (HEATSINK WIDTH) 72 (EFFECTIVE PRINT WIDTH) DOT #576 DOT #1 15.1±1 2.6±0.1 .φ ax .0 14 M No.1 No.9 No.9 CONNECTOR B No.1 CONNECTOR A 2-M3 (EFFECTIVE DEPTH 4.5) 5 73 4.6 16±0.2 EPOXY RESIN COATED 1/4 KF2003-GR40A Printheads !Equivalent circuit VH 8,9 GND 1,2 DOT #576 DOT #1 STB3 3 6 6 5 4 SHIFT REGISTER 4 3 STB1 STB2 LAT DO CLK THERMISTOR 30kΩ B3950 3 TM 1 7 7 V DD 2 GND 5 LACTH REGISTER DI VH 8,9 4 STB4 1,2 CONNECTOR B CONNECTOR A Fig.1 !Pin assignments CONNECTOR B CONNECTOR A No. Circuit No. Circuit 1 GND 1 VH 2 GND 2 VH 3 TM 3 DO 4 VDD 4 CLK 5 LAT STB4 5 6 STB3 6 STB2 7 DI 7 STB1 8 VH 8 GND 9 VH 9 GND 2/4 KF2003-GR40A 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 hold LAT t setup LAT LATCH (LAT) "High" :HOLD "Low" :THROUGH tw LAT t setup STB STROBE (STB) tdo tdo DRIVER OUT Fig.2 !Characteristics Typical Unit Effective printing width − 72.0 mm Dot pitch − 0.125 mm Parameter Symbol − 576 dots Rave 800 Ω Applied voltage VH 24.0 V Applied power PO 0.64 W/dot Print cycle SLT 1.25 ms Pulse width TON 0.28 ms − 288 dots MHz Total dot number Average resistance value Maximum number of dots energized simultaneously Maximum clock frequency − 4 Maximum roller diameter − φ14.0 Running life / pulse life − 50/5×10 km/pulses Operating temperature − 5~45 °C mm 7 3/4 KF2003-GR40A Printheads !Electrical characteristic curves 0.8 0.8 1.8 Paper : KF50-HDA (OJI) 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 1.6 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