Printhead Specifications; Printhead Drive Circuit Block Diagram - Epson L-1000 Technical Manual

REV.-A

2.2.7.2 Printhead Specifications

Printhead specifications are as follows:
Solenoids
Wire Diameter
Pin Arrangement
Drive Voltage
Coil Resistance
Driving Pulse Width
Solenoid Drive Frequency
Current

2.2.7.3 Printhead Drive Circuit Block Diagram

Gate array E05A02LA is used as an 8-bit x 3 data latch. The CPU determines the pulse width for the head-wire
drive pulses from gate array E05A02LA by monitoring the printhead drive power (+ 24 V line). The CPU also
monitors the printhead temperature and stops printing if it gets too high.
LQ-500/L-1000
24 solenoids
0.02 mm
12 x 2, staggered
24 VDC k 10%
16 f 10% at 25 degrees C
415 µs to 435 µs
1 .111 msec (900 Hz) f
0.12 A (typical)
Figure 2-50. Printhead Drive Circuit Block Diagram
PRINCIPLES OF OPERATION
5%
2-55