Service manual

Principles of Operation
Printhead software control
At 960 pps, one print cycle is performed at each phase switch step to meet the
printhead’s specifications. (The printhead’s solenoid drive frequency is 960 Hz).
The drive pulse width is adjusted using an A/D converter to detect the drive
voltage. The drive pulse width is kept within the range indicated by the oblique
lines in Figure 2-50.
Figure 2-49. Print Timing
Drive Voltage(V)
Figure 2-50.
Relationship Between the Head Driver Voltage
and the Print Driving Pulse Width
LQ-200/AP3000
2-51