Epson LQ-510 Technical Manual page 101

REV.-A
2.3.6.6 Printhead Software Control
During operation at 900 pulses per second (pps), one print cycle is performed at each phase-switching step
to meet the specifications of the printhead (solenoid drive frequency: 900 Hz). The drive pulse width is ad-
justed by using an A/D converter to detect the drive voltage and is kept within the area shown by the oblique
lines in Figure 2-67.
Printhead Specifications
Figure 2-67. Relationship between Head Driver Voltage and Print Driving Pulse Width
LQ-510
Figure 2-66. Print Timing
I
2 1 . 6 2 2 . 5
2 2 . 0 2 3 . 0
2 4 . 0 2 5 . 0 2 6 . 0
Drive Voltage V (V)
PRINCIPLES OF OPERATION
2 6 . 4
2-59