Printheads
zCharacteristics
Parameter
Symbol
Effective printing width
−
Dot pitch
−
Total dot number
−
Average resistance value
Rave
Applied voltage
VH
Applied power
PO
Print cycle
SLT
Pulse width
TON
Maximum number of dots energized simultaneously −
Maximum clock frequency
−
Maximum roller diameter
−
Running life / pulse life
−
Operating temperature
−
Typical
216.832
0.0847
2560
660
24
0.52
1.11
0.27
1280
8
φ25.0
50/5×107
5~45
KF3008-GD34A
Unit
mm
mm
dots
Ω
V
W/dot
ms
ms
dots
MHz
mm
km/pulses
°C
zElectrical characteristic curves
0.8
Paper : 140LAB (RICOH)
0.7
0.6
0.5
0.4
0.3
0.2
0.1
00
1
2
3
4
5
SCANNING LINE TIME (ms/line)
Fig.3 Adaptive speed chart
1.8
SLT : 1.11ms/line
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0.00 0.05 0.10 0.15 0.20 0.25 0.30
ENERGY (mJ/dot)
Fig.4 Representative density curve
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
1
2
3
4
5
SCANNING LINE TIME (ms/line)
Fig.5 Maximum energy curve
180
160
140
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