Fuser Components - Lexmark MS81x Service Manual

When a laser beam is scanned across the photoconductor (drum) surface from one end to the other while turning on
and off the beam, one line of latent image is created. If the scanning by the laser beam is repeated while rotating the
drum, a two-dimensional image is created. The resolution in the scanning direction (from right to left) is determined
by the rotational speed of the printhead motor, depending on how quickly the laser is adjusted. The resolution in the
process direction (from top to bottom) is determined by the rotational speed of the printhead motor. (The higher the
scanning speed becomes, the sooner the scanning of the next row can be started.)
The following image is a conceptual diagram of an image created by scanning:

Fuser components

• "Heat belt (belt fuser)" on page 610
•
"Heat belt (hot roll fuser)" on page 610
•
"Pressure roll" on page 610
• "Heater lamp (hot roll fuser)" on page 611
•
"Thermistor" on page 611
•
"Sensor (fuser exit)" on page 611
•
"Sensor (narrow media) (hot roll fuser only)" on page 611
Appendix C: Theory of operation
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