KF2008-GK11A Printheads Thick Film Thermal Printhead (8dots / mm) KF2008-GK11A The KF2008-GK11A use a high durability protective film to accept top coated label sheet. This is a light and small thick film type thermal printhead which achieved 1 inch / s printing speed. !Applications POS terminal printers Label printers CAT printers General purpose compact printers !Features 1) A high durability protective film has been developed newly as a counter measure against static electricity. 2) The clip connector for the FFC specifications has been developed newly using an original technology thereby making it possible to achieve even smaller size. 3) A newly developed 144-bits IC levels the strobe partition and reduces the noise level. 4) One rank resistance value of 1500Ω±3% eliminates the inconvenience of rank selection. !External dimensions (Units : mm) 230.5±0.3(HEATSINK WIDTH) Max. 1.7 (5.1) 216(EFFECTIVE PRINT WIDTH) DOT #1728 ax .φ 20 . 0 DOT #1 No.28 No.1 Max. 10.5 M Max. 18.0 2.6±0.1 230(SUBSTRATE WIDTH) (Open) 5.1±0.2 5±0.2 2-M3 EFFECTIVE DEPTH3 220.5±0.2 Min. 4 0.3±0.05 36.25±0.1 33.75±0.1 0.8±0.03 1.25±0.05 7 Dimensions of reinforcing panel (ROCK) Diagrams of appropriate cable for reference(2 / 1) KF2008-GK11A Printheads !Equivalent circuit 144 OUTPUTS EACH DOT #1728 VH DOT #1 GND 12 11 10 9 8 7 6 5 4 3 2 STB4 STB3 STB2 STB1 LAT CLK DI1 DO1 DI2 DO2 LATCH REGISTER LATCH REGISTER SHIFT REGISTER SHIFT REGISTER V DD TM THERMISTOR 30kΩ B:3950 TM CONNECTOR Fig. 1 !Pin configuration No. Circuit No. Circuit 1 VH 15 GND 2 VH 16 GND 3 VH 17 GND 4 DO2 18 GND 5 DI2 19 TM 6 CLK 20 VDD 7 LAT 21 STB3 8 STB1 22 STB4 9 STB2 23 DO1 10 TM 24 DI1 11 GND 25 VH 12 GND 26 VH 13 GND 27 VH 14 GND 28 VH 1 KF2008-GK11A Printheads !Timing chart tw CLK CLOCK(CLK) t setup DI t hold DI DATA IN(DI) High : BLACK Low : WHITE td DO DATA OUT(DO) High : BLACK Low : WHITE t setup LAT t hold LAT LATCH(LAT) High : HOLD Low : THROUGH tw LAT t setup STB STROBE(STB) tdo tdo DRIVER OUT Fig. 2 !Characteristics Symbol Typical Unit Effective printing width − 216.0 mm Dot pitch − 0.125 mm Total dot number − 1728 dots Rave 1500 Ω Applied voltage VH 24.0 V Applied power PO 0.30 W / dot Print cycle SLT 5.0 ms Pulse width TON 0.80 ms Maximum number of dots energized simultaneously − 432 dots Maximum clock frequency − 4 MHz Maximum roller diameter − 14.0 Running life / pulse life − 50 / 5×10 km / pulses Operating temperature − 5∼45 °C Parameter Average resistance value mm 7 KF2008-GK11A Printheads !Data sheet 1.4 0.5 0.45 1 SLT : 10ms / line 0.9 1.2 0.8 0.35 0.3 0.25 0.2 0.15 0.1 1 ENERGY(mJ / dot) OPTICAL DENSITY ENERGY(mJ / dot) 0.4 0.8 0.6 0.4 0.5 0.4 0.3 0.1 0 4 6 8 10 12 14 16 18 20 22 180 160 140 120 100 80 60 40 20 0 10 20 30 40 50 TEMPERATURE : (°C) Fig. 6 Thermistor curve 0.2 0.3 0.4 0.5 Fig. 4 Representative density curve Fig. 3 Adaptive speed chart 0 −20 −10 0.1 ENERGY(mJ / dot) SCANNING LINE TIME(ms / line) RESISTANCE : (kΩ) 0.6 0.2 0.2 0.05 0 0.7 60 70 0 0 5 10 15 SCANNING LINE TIME6.5 Fig. 5 Maximum energy curve 20