Printhead; Printhead Printing Operation - Epson L-1000 Technical Manual

PRINCIPLES OF OPERATION

2.2.7 Printhead

This section describes printhead operation.

2.2.7.1 Printhead Printing Operation

The dot-wire operation during printing is as follows: when the head-driving coil for a dot wire is energized, the
actuating plate engaged with the dot wire at one end is attracted to the iron core and drives the dot wire toward
the platen. The dot wire strikes the ribbon and the paper against the platen to print a dot in the paper.
When the head-driving coil is deenergized, the actuating plate returns to the initial position as a result of action
of the actuating plate spring. After striking the platen, the dot wire also returns to its initial position as a result
of impact energy and from the wire-resetting spring, and the dot wire is held in engagement with the actuating
plate until it is driven again. Figure 2-49 shows the printhead printing operation.
2-54
Figure 2-49. Printhead Printing Operation
REV.-A
LQ-500/ L-1000