Ricoh FT8680 Service Manual page 46

ERASE 31 July 1995
4. ERASE
4.1 OVERVIEW
[A]
A171D573.img
The electrical charge of the area that does not require any image will be
removed by the erase lamp unit [A].
This reduces toner consumption, and the load of the cleaning unit.
The erase lamp unit consists of 90 yellow-green LEDs. This reduces drum
light fatigue and allows precise control of the light width.
The erase lamp unit is controlled by the main PCB based on factors such as
the reproduction ratio, paper size, SP mode settings, and the image editing
settings.
The maximum erase margin error in the image editing mode is 6 mm.
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