KF3008-GD32A printheads 1/4 high speed thick film thermal printhead (11.8 dots / mm) KF3008-GD32A using its expertise in lsi technology, rohm has developed new high density driver chips for use in the KF3008-GD32A . 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. ! ! ! ! applications label 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 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. ! ! ! ! external dimensions (units : mm) 96 0.2 (9) (14) 6.1 0.2 (12.25) 206 0.2 connector.b no.1 no.15 center of heat element max. 25.0 max.23.6 2.6 0.1 230.5 0.3 (heatsink width) 230 (substrate width) 216.832 (effective print width) cl 5-m3(effective depth 3) no.1 connector.a no.15 no.1 no.15 connector.c dot #2560 dot #1
KF3008-GD32A printheads 2/4 ! ! ! ! equivalent circuit vh gnd v dd v dd stb4 stb3 stb2 di4 di3 do3 di2 do2 vh dot #2560 dot #1 latch register shift register shift register shift register shift register connector c connector b thermistor 30k ? b:3950 connector a gnd gnd tm tm stb1 di1 do1 clk do4 lat 1 5 6 16 15 20 11 10 ! ! ! ! pin assignments
KF3008-GD32A printheads 3/4 no. 1 gnd gnd stb4 clk v dd do3 do4 di4 vh vh vh vh vh vh 2 3 4 5 6 7 8 9 10 11 12 13 14 15 circuit di3 connector c no. 1vh vh vh vh vh di1 vh do1 do2 di2 v dd stb1 gnd gnd 2 3 4 5 6 7 8 9 10 11 12 13 14 15 circuit lat connector a no. 1 gnd connector b gnd gnd gnd gnd nc stb2 tm gnd gnd gnd gnd gnd 2 3 4 5 6 7 8 9 10 11 12 13 14 15 circuit stb3 tm ! ! ! ! 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 ! ! ! ! characteristics
KF3008-GD32A printheads 4/4 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 216.832 0.0847 2560 660 24 0.52 1.11 0.27 1280 8 25.0 50/5 10 7 5~45 mm mm dots ? v w/dot ms ms dots mhz mm km/pulses c symbol typical unit ? ? ? ? ? ? ? ! ! ! ! electrical characteristic curves paper : 140lab (ricoh) 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 : 1.11ms/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
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