KD2003-DG12A Printheads Compact high speed thick film thermal printhead (8dots / mm) KD2003-DG12A KD2003-DG12A built in new and high density driver IC developed by the cutting edge technologies realizes the highest speed in the same class (250mm/s) at both Thermal Transfer and Direct Thermal. This Thermal Printhead is suitable for POS, ATM, KIOSK and TICKET industries which require High Speed / High Density and Graphic printing. By the implementation of highly durable protective coat, it achieves 150km as the standard abrasion life. zApplications Label printers Ticket printers POS printers ATM printers KIOSK printers Terminal 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 250mm/s, the fastest in its class ( with historical control ). 2) One rank resistance value of 650Ω ± 3% eliminates the inconvenience of rank selection. 3) The required driving voltage of 3.13 to 5.25V allows wide range of power supply voltage setting. This also allows multiple choice of electronic components for printers. 4) With the standard abrasion life of 150km, long life is achieved against the largely abrasive thermal paper. zDimensions (Unit : mm) Max.1.7 5.1±0.4 Dot #1 No.1 M No.28 AX .φ 20 .0 2.6±0.1 Dot #640 Insert Direction Connector Exposed Conductor Side 5.1±0.2 10.2±0.2 Max.18 91±0.3 80 (Effective Print Width) 5±0.2 81±0.2 2-M3 (Effective Depth 3) 1/4 KD2003-DG12A Printheads zEquivalent circuit 1-4,26-28 DOT #640 VH GND VSF VDD STB2 STB1 LAT CLK DI2 DO2 DI1 DO1 TM TM DOT #1 7-11,19-22 25 5 L/S 4 3 2 1 15 18 12 14 LATCH REGISTER 13 24 23 SHIFT REGISTER 2 SHIFT REGISTER 1 6 5 16 THERMISTOR 30kΩ B3950 17 Fig.1 zPin assignments No. Circuit No. Circuit 1 VH 15 VDD 2 VH 16 TM 3 VH 17 TM 4 VH 18 STB2 5 DO1 19 GND 6 DI1 20 GND 7 GND 21 GND 8 GND 22 GND 9 GND 23 DO2 10 GND 24 DI2 11 GND 25 VSF 12 STB1 26 VH 13 CLK 27 VH 14 LAT 28 VH 2/4 KD2003-DG12A Printheads zTiming 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 zCharacteristics Parameter Effective printing width Dot pitch Total dot number Average resistance value Symbol Typical Unit − 80 mm − 0.125 mm − 640 dots Rave 650 Ω Applied voltage VH 24 V Applied power PO 0.74 W/dot Print cycle SLT 0.5 ms Pulse width TON 0.2 ms Maximum number of dots energized simultaneously − 640 dots Maximum clock frequency − 16 MHz Maximum roller diameter − φ20.0 Running life / pulse life − 150/1×10 km/pulses Operating temperature − 5 to 45 °C mm 8 3/4 KD2003-DG12A Printheads 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 0.1 0 0 1 2 3 4 5 SCANNING LINE TIME (ms/line) 0.6 ENERGY (mJ/dot) OPTICAL DENSITY 0.6 ENERGY (mJ/dot) SLT : 0.620ms/line 1.2 1.0 0.8 0.6 0.4 0.3 0.4 0.2 0.2 0.1 0.0 0.00 0.05 0.10 0.15 0.20 0.25 0.30 ENERGY (mJ/dot) Fig.4 Representative density curve Fig.3 Adaptive speed chart 0.5 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 which 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. It is our top priority to supply products with the utmost quality and reliability. However, there is always a chance of failure due to unexpected factors. Therefore, please take into account the derating characteristics and allow for sufficient safety features, such as extra margin, anti-flammability, and fail-safe measures when designing in order to prevent possible accidents that may result in bodily harm or fire caused by component failure. ROHM cannot be held responsible for any damages arising from the use of the products under conditions out of the range of the specifications or due to non-compliance with the NOTES specified in this catalog. Thank you for your accessing to ROHM product informations. More detail product informations and catalogs are available, please contact your nearest sales office. ROHM Customer Support System www.rohm.com Copyright © 2008 ROHM CO.,LTD. THE AMERICAS / EUROPE / ASIA / JAPAN Contact us : webmaster@ rohm.co. jp 21 Saiin Mizosaki-cho, Ukyo-ku, Kyoto 615-8585, Japan TEL : +81-75-311-2121 FAX : +81-75-315-0172 Appendix1-Rev2.0