Canon np6330 서비스 매뉴얼

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Blank exposure is used to eliminate the drum surface potential in the non-image

area occurring as a result of the difference, if any, between original and copy or in
Reduce mode.

The light from the pre-exposure lamp is reflected by the replacing plate so that it is

directed to the photosensitive drum after image exposure.

The non-image area between sheets of copy paper is exposed by light from the pre-

exposure lamp which is reflected by a separate reflecting plate.

Pre-exposure
 lamp

Reflecting plate

Pre-exposure 
optical path

Blank exposure
 lamp optical path

 Shutter

Sheet-to-sheet 

blank exposure 

optical path

Reflecting plates

Image exposure 
optical path

Photosensitive 
drum

No. 6 mirror

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