KF2004-GH10A printheads 1/4 compact low speed thick film thermal printhead (8 dots / mm) KF2004-GH10A the KF2004-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) 5.85 max. 14.0 max. 1.7 119 (heatsink width) 108 (effective print width) dot #864 dot #1 15.1 2.6 16 no.9 no.1 no.9 no.1 connector b connector a 4.6 5 109 2-m3
KF2004-GH10A printheads 2/4 ! ! ! ! equivalent circuit vh gnd stb4 stb3 di v dd tm vh 8,9 1,2 7 8,9 6 5 3 4 dot #864 dot #1 1,2 5 6 4 7 latch register shift register connector b connector a 3 gnd stb1 stb2 lat do clk fig.1 1 432 5 6 30k ? b3950 thermistor ! ! ! ! pin assignments connector b no. 1 2 3 4 5 6 7 8 9 circuit connector a no. 1 2 3 4 5 6 7 8 9 circuit gnd gnd tm v dd stb4 stb3 di vh vh vh vh do clk lat stb2 stb1 gnd gnd
KF2004-GH10A printheads 3/4 ! ! ! ! timing chart clock (clk) tw clk t setup di t hold di td do t setup lat tw lat t setup stb tdo tdo t hold lat data in (di) "high":black "low":white data out (do) "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 108.0 0.125 864 1500 24.0 0.30 2.5 0.73 432 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 operating temperature running life / pulse life maximum roller diameter maximum clock frequency maximum number of dots energized simultaneously pulse width print cycle applied power applied voltage total dot number effective printing width dot pitch average resistance value
KF2004-GH10A printheads 4/4 ! ! ! ! electrical characteristic curves 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.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 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 0123456 scanning line time (ms / line) fig.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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