KF2002-GD30A printheads 1/4 compact medium speed thick film thermal printhead (8 dots / mm) KF2002-GD30A the KF2002-GD30A is a standard 24 v thick-film thermal printhead with a printing speed of 4 inches / second, developed mainly for label printers. the gd30 series is of the glazed component type and therefore excellent for thermal transfer printing. ! ! ! ! applications label printers ticket printers terminal printers ! ! ! ! features 1) a new pin connector structure greatly reduces the size and weight. 2) a hard protective coating with good conductivity ensures highly reliable operation over a long useful life. 3) a newly developed driving ic improves data transmission speed (8mhz) and on resistance (half of the conventional product) to support various control methods. 4) one rank resistance value of 800 ? 3% eliminates the inconvenience of rank selection. 5) 2-inch, 3-inch and 4-inch series are available. ! ! ! ! external dimensions (units : mm) 65 56 (effective print width) 55 0.2 2 ? m3 (effective depth 3) 5 0.2 5.1 0.1 (10.2) dot #448 2.6 0.1 max.20 dot #1 connector b connector a no.15 no.1 no.1 no.15 5 0.3 4 0.2 20.0
KF2002-GD30A printheads 2/4 ! ! ! ! equivalent circuit vh p-gnd l-gnd stb6 stb5 stb4 di tm tm vh 12,13,14,15 12,13,14,15 1,2,3,4 9 10 11 6 7 5 8 dot #448 dot #1 1,2,3,4 5 10 9 8 11 latch register shift register thermistor 30k ? b:3950 connector b connector a 6 7 p-gnd stb1 stb2 stb3 lat do clk v dd fig.1 ! ! ! ! pin assignments no. 1vh vh vh vh do lat clk v dd stb1 stb2 stb3 p-gnd p-gnd p-gnd p-gnd l-gnd : logic ground p-gnd : power ground 2 3 4 5 6 7 8 9 10 11 12 13 14 15 circuit no. 1 p-gnd connector a connector b p-gnd p-gnd p-gnd l-gnd tm tm stb5 di vh vh vh vh 2 3 4 5 6 7 8 9 10 11 12 13 14 15 circuit stb6 stb4
KF2002-GD30A printheads 3/4 ! ! ! ! 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 parameter effective printing width ? rave v h p o slt t on 56.0 0.125 448 800 24 0.64 1.25 0.27 448 8 20.0 50/5 10 7 5~45 mm mm dots ? v w/dot ms ms dots mhz mm km/pulses c 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 symbol typical unit ? ? ? ? ? ? ?
KF2002-GD30A printheads 4/4 ! ! ! ! electrical characteristic curves 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 012345 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 0.00 0.05 0.10 0.15 0.20 0.25 0.30 energy ( mj/dot) fig.4 representative density curve optical density slt : 1.25ms/line 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 012345 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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