KF2002-GH10A printheads 1/4 compact low speed thick film thermal printhead (8 dots / mm) KF2002-GH10A the KF2002-GH10A is a compact and lightweight thick-film thermal printhead with a printing speed of 50mm / second, developed mainly for ecrs. ! ! ! ! applications cash registers label printers receipt printers general purpose compact printers ! ! ! ! features 1) a new pin connector structure greatly reduces the size and weight. 2) a newly developed 144-bit ic levels the strobe partition and reduces the noise level. 3) one rank resistance value of 1500 ? 3% eliminates the inconvenience of rank selection. 4) 2-inch, 3-inch and 4-inch series are available. ! ! ! ! external dimensions (units : mm) max. 1.7 60 54 [3] dot #432 dot #1 no.7 no.7 no.1 connector b connector a 50 2-m3 5 4.6 16 15.1 2.6 no.1 max. 14.0 5.85
KF2002-GH10A printheads 2/4 ! ! ! ! equivalent circuit vh gnd stb3 stb2 di v dd vh 7 1,2 5 7 4 3 6 dot #432 dot #1 1,2 4 5 3 6 latch register shift register thermistor 30k ? b3950 connector b connector a gnd stb1 lat clk tm fig.1 1 2 3 ! ! ! ! pin assignments no. 1 2 3 4 5 6 7 circuit no. 1 2 3 4 5 6 7 circuit connector a connector b gnd gnd v dd stb2 di vh vh vh clk lat stb1 gnd tm stb3
KF2002-GH10A printheads 3/4 ! ! ! ! timing chart clock (clk) tw clk t setup di t hold di t setup lat tw lat t setup stb tdo tdo t hold lat data in (di) "high" :black "low" :white latch (lat) "high" :hold "low" :through strobe (stb) driver out fig.2 ! ! ! ! characteristics parameter rave v h p o slt t on 54.0 0.125 432 1500 24.0 0.33 2.5 0.67 144 4 14.0 50/5 10 7 5~45 mm mm dots ? v w/dot ms ms dots mhz mm km/pulses c symbol typical unit ? ? ? ? ? ? ? ? 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
KF2002-GH10A printheads 4/4 ! ! ! ! electrical characteristic curves 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 0123456 scanning line time (ms / line) fig.3 adaptive speed chart energy (mj / dot) 0 0.2 0.4 0.6 0.8 1 1.2 0 0.05 0.1 0.15 0.2 0.25 0.3 energy (mj / dot) fig.4 representative density curve optical density 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 0123456 scanning line time ( ms / line) fig.5 maximum energy curve energy (mj / dot) 0 20 40 60 80 100 120 140 160 180 ? 20 ? 10 10 30 50 70 0204060 temperature : ( c) fig.6 thermistor curve resistance : (k ? )
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