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| KF2004-GF41A Printheads Compact high speed thick film thermal printhead (8dots / mm) KF2004-GF41A Using its expertise in LSI technology, ROHM has developed new high density driver chips for use in the KF2004-GF41A . Capable of being employed for both thermal and thermal transfer printing, with a print speed of 200mm/s, the resulting printheads are the fastest in their class. The high-speed and high-density printing answers the needs of ATM, kiosk and ticket printing devices, which are increasingly being called upon to produce graphical output. !Applications Label printers Ticket printers POS printers ATM printers KIOSK printers Terminal printers !Features 1) The use of a special partial glaze and the latest heating element structure, along with new high-density driver chips that can accept big current, has allowed ROHM to achieve print speeds of 200mm/s, the fastest in its class. 2) One rank resistance value of 650 3% eliminates the inconvenience of rank selection. 3) 2-inch, 3-inch and 4-inch series are available. !External dimensions (Units : mm) 118 104 (Effective Print Width) Max.1.7 (5.1) Dot #1 2.60.1 Dot #832 Max.18 No.28 Connector No.1 M AX . 20 .0 Insert Direction Exposed Conductor Side 1100.2 40.2 5.10.1 2-M3 (Effective Depth 3) 10.2 1/4 KF2004-GF41A Printheads !Equivalent circuit VH GND 1,2,3,4 25,26,27,28 7-11,19-22 DOT #832 DOT #1 VDD 7 15 6 5 4 3 2 1 STB2 18 STB1 12 LAT CLK DI2 DO2 DI1 DO1 TM TM 14 13 24 23 6 5 16 17 LATCH REGISTER SHIFT REGISTER 2 SHIFT REGISTER 1 THERMISTOR Fig.1 !Pin assignments No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Circuit VH VH VH VH DI1 DO1 GND GND GND GND GND STB1 CLK LAT No. 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Circuit VDD TM TM STB2 GND GND GND GND DO2 DI2 VH VH VH VH 2/4 KF2004-GF41A Printheads !Timing chart tw CLK CLOCK (CLK) t setup DI DATA IN (DI) "High":BLACK "Low" :WHITE DATA OUT (DO) "High":BLACK "Low" :WHITE t hold DI td DO t setup LAT LATCH (LAT) "High":HOLD "Low" :THROUGH tw LAT STROBE (STB) t hold LAT t setup STB tdo DRIVER OUT tdo Fig.2 !Characteristics Parameter 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 Symbol - - - Rave VH PO SLT TON - - - - - Typical 104 0.125 832 650 24 0.657 0.625 0.234 448 8 20.0 50/5x10 5~45 7 Unit mm mm dots V W/dot ms ms dots MHz mm km/pulses C 3/4 KF2004-GF41A Printheads !Electrical characteristic curves 0.8 Paper : KF50-HDA (OJI) 0.7 0.6 ENERGY (mJ/dot) OPTICAL DENSITY 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 1.8 SLT : 0.620ms/line 0.8 0.7 0.6 ENERGY (mJ/dot) 0.5 0.4 0.3 0.2 0.1 0 0 1 2 3 4 5 0.5 0.4 0.3 0.2 0.1 0.0 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0 0 1 2 3 4 5 SCANNING LINE TIME (ms/line) ENERGY (mJ/dot) SCANNING LINE TIME (ms/line) Fig.3 Adaptive speed chart Fig.4 Representative density curve Fig.5 Maximum energy curve 180 160 140 RESISTANCE : (k) 120 100 80 60 40 20 0 -20 -10 0 10 20 30 40 50 60 70 TEMPERATURE : (C) Fig.6 Thermistor curve 4/4 |
Price & Availability of KF2004-GF41A
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