KF2004-GL50A Printheads Thick film thermal printhead (8 dots / mm) KF2004-GL50A The KF2004-GL50A is a 24 V standard thick film thermal printhead with a printing speed up to 6 inches / s that has been developed mainly for label printer use. zApplications High speed label printer High speed bar code printer High speed ticket printer Various high speed terminal printers zFeatures 1) Newly developed thick-film fast response thermal element is employed for this series and 6 inches / s or 150mm / s is possible without thermal history control. It is possible to print 10 inches / s or 250mm / s if external thermal history control is used. 2) 150km life realized for GL50 by attributing durable new protection film. 3) New partial glaze construction makes it compatible with the thermal transfer application. 4) Market-proven G-series printhead construction ensures high reliability. zExternal dimensions (Units : mm) 6.1±0.4 (5) 118 104 (EFFECTIVE PRINT WIDTH) DOT #1 DOT #832 φ2 0 Max.45 Max.36 (3) (7) + + Max.10 #2 #20 #1 #6 #1 Max.5.5 #19 CONNECTOR A CONNECTOR B 3-M3 (EFFECTIVE DEPTH 3) (19) 80±0.3 12±0.2 40±0.3 15±0.3 φ3H10 (EFFECTIVE DEPTH 3) 17.8±0.2 7.3±0.3 φ3H10 LENGTH 4 (EFFECTIVE DEPTH 3) 15.3±0.3 (20.8) 25±0.5 95±0.3 KF2004-GL50A Printheads zEquivalent circuits DOT #832 VH DOT #1 P-GND L-GND 13 12 11 10 9 8 7 6 5 4 3 2 1 VDD 64 OUTPUT EACH STB4 STB3 STB2 STB1 LAT LATCH REGISTER CLK SHIFT REGISTER SHIFT REGISTER SHIFT REGISTER DI4 DO4 DI3 DO3 DI2 DO2 DI1 DO1 TM THERMISTOR 30kΩ B : 3950 TM CONNECTOR A / B DI No. DOT No. STB No. DOT No. DI1 1~256 STB1 1~256 DI2 257~448 STB2 257~448 DI3 449~640 STB3 449~640 DI4 641~832 STB4 641~832 Fig.1 zPin assignments CONNECTOR A CONNECTOR B No. Circuit No. Circuit No. Circuit 1 L-GND 11 TM 1 VH 2 VDD 12 TM 2 VH 3 L-GND 13 DI3 3 VH 4 VDD 14 DO3 4 P-GND 5 STB4 15 DI2 5 P-GND 6 CLK 16 DO2 6 P-GND 7 DI4 17 STB2 8 DO4 18 STB1 9 STB3 19 DI1 10 LAT 20 DO1 L-GND: LOGIC GROUND P-GND: POWER GROUND SHIFT REGISTER KF2004-GL50A Printheads zTiming chart tw CLK CLOCK (CLK) t setup DI DATA IN (DI) High : BLACK Low : WHITE t hold DI td DO DATA OUT (DO) High : BLACK Low : WHITE t hold LAT t setup LAT LATCH (LAT) High : HOLD Low : THROUGH tw LAT t setup STB STROBE (STB) tdo tdo DRIVER OUT Fig.2 zCharacteristics Parameter Symbol Typical Unit Effective printing width − 104 mm Dot pitch − 0.125 mm − 832 dots Rave 550 Ω Total dot number Average resistance value Applied voltage VH 24 V Applied power PO 0.90 W / dot Print cycle SLT 0.82 ms Pulse width TON 0.27 ms Maximum number of dots energized simultaneously − 448 dots Maximum clock frequency − 8 MHz Maximum roller diameter − Running life / pulse life − 150 / (1×10 ) km / pulses Operating temperature − 5~45 °C φ20.0 mm 8