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| KF2004-GF50A Printheads Compact low voltage thick film thermal printhead (8dots / mm) KF2004-GF50A A world first, ROHM offers the KF2004-GF50A of thermal printheads that allow operation using a single standard lithium ion battery: required voltage has been reduced to just 2.7V. Compact and lightweight they are ideal printheads for handheld printers and PDAs (personal digital assistants). !Applications Mobile printers FET-POS printers Hand-held printers Debit printers !Features 1) Using advanced LSI technology, ROHM has developed a dedicated low voltage driver chip. Compared with previous products, power consumption has been reduced by more than 30%. Because the print head circuits draw just 2.7 volts, the printer can be driven using a single lithium ion battery. 2) One rank resistance value of 123 4% eliminates the inconvenience of rank selection. 3) The GP10 series has a resistance value of 123 and can be used in devices designed to operate with a single 3V lithium ion battery. !External dimensions (Units : mm) 117 Max.1.7 Dot #1 MAX.16.5 2.10.3 104 (Effective Print Width) Dot #832 (11.35) (1.1) Exposed Conductor Side (14) ax . 14 . 0 No.28 No.1 Connector M Insert Direction 1/4 KF2004-GF50A Printheads !Equivalent circuit VH L-GND P-GND 1,2,3,26,27,28 18 13,14,15,16,17 13 24 23 12 11 3 2 1 DOT #832 DOT #1 STB7 STB6 STB2 STB1 AEO2 AEO1 LAT 9 8 20 19 5 LATCH REGISTER DI CLK DO VDD TM TM 25 6 4 7 11 12 THERMISTOR 30k B:3950 SHIFT REGISTER Fig.1 !Pin assignments No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Circuit VH VH VH DO LAT CLK VDD STB1 STB2 STB3 TM TM P-GND P-GND No. 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Circuit P-GND P-GND P-GND L-GND AEO1 AEO2 STB4 STB5 STB6 STB7 DI VH VH VH L-GND : LOGIC GROUND P-GND : POWER GROUND 2/4 KF2004-GF50A 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 AEO 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 0.125 832 123 3.6 0.07 2.50 2.02 64 8 14.0 50/1x10 0~50 8 Unit mm mm dots V W/dot ms ms dots MHz mm km/pulses C 3/4 KF2004-GF50A 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 : 2.50ms/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-GF50A
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