KD2003-DG12A printheads 1/4 compact high speed thick film thermal printhead (8dots / mm) KD2003-DG12A KD2003-DG12A built in new and high density driver ic developed by the cu tting 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. z applications label printers ticket printers pos printers atm printers kiosk printers terminal printers z features 1) the use of a special partial glaze and the latest heating elem ent structure, along with new high-density driver chips that can accept big current, has allowed rohm to achieve print speed s of 250mm/s, the fastest in its class ( with historical control ). 2) one rank resistance value of 650 ? 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. z dimensions (unit : mm) exposed conductor side insert direction max.1.7 max. 20.0 5.1 0.4 5 0.2 2-m3 (effective depth 3) 10.2 0.2 5.1 0.2 81 0.2 91 0.3 no.28 no.1 connector max.18 2.6 0.1 80 (effective print width) dot #1 dot #640
KD2003-DG12A printheads 2/4 z equivalent circuit 5 vh gnd vdd stb2 stb1 lat di2 clk di1 tm tm dot #640 dot #1 shift register 2 shift register 1 thermistor 30k ? b3950 fig.1 do2 do1 1 2 3 4 15 vsf 18 12 14 13 24 23 6 5 16 17 7-11,19-22 latch register l/s 1-4,26-28 25 z pin assignments no. 1vh vh vh vh di1 gnd gnd gnd gnd gnd clk stb1 do1 2 3 4 5 6 7 8 9 10 11 12 13 14 circuit lat no. v dd tm tm stb2 gnd gnd vsf di2 do2 vh vh vh 15 16 17 18 19 20 21 22 23 24 25 26 27 28 circuit gnd gnd
KD2003-DG12A printheads 3/4 z timing chart clock (clk) data in (di) data out (do) latch (lat) "high":hold "low" :through "high":black "low" :white "high":black "low" :white strobe (stb) driver out tw clk t setup di t hold di td do t setup lat tw lat t setup stb tdo tdo t hold lat fig.2 z characteristics effective printing width dot pitch total dot number average resistance value applied voltage applied power print cycle pulse width maximum number of dots energized simultaneously maximum clock frequency maximum roller diameter running life / pulse life operating temperature parameter ? rave v h p o slt t on 80 0.125 640 650 24 0.74 0.5 0.2 640 16 20.0 150/1 10 8 5 to 45 mm mm dots ? v w/dot ms ms dots mhz mm km/pulses c symbol typical unit ? ? ? ? ? ? ?
KD2003-DG12A printheads 4/4 z electrical characteristic curves paper : kf50-hda (oji) 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 012345 scanning line time ( ms/line) energy ( mj/dot) fig.3 adaptive speed chart 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 0.00 0.05 0.10 0.15 0.20 0.25 0.30 energy ( mj/dot) optical density slt : 0.620ms/line fig.4 representative density curve 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 012345 scanning line time ( ms/line) energy ( mj/dot) fig.5 maximum energy curve 0 20 40 60 80 100 120 140 160 180 ? 20 ? 10 10 30 50 70 0204060 temperature : ( c) resistance : (k ? ) fig.6 thermistor curve
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. appendix1-rev2.0 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 the americas / europe / asia / japan contact us : webmaster@ rohm.co. jp www.rohm.com copyright ? 2008 rohm co.,ltd. the products listed in this document are designed to be used with ordinary electronic equipment or de vices (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. 21 saiin mizosaki- cho, ukyo-ku, kyoto 615-8585, japan tel : +81-75-311-2121 fax : +81-75-315-0172 appendix
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