Compensation device for sensitivity of the photosensitive drum o

Details Compensation device for sensitivity of the photosensitive drum o Compensation device for sensitivity of the photosensitive drum o

1993-12-27

1996-04-23

Ramirez, Nestor R.

Photocopying

Contact printing

Light boxes

355 71, G03G 1504

Patent

active

055108806

ABSTRACT:
In an copying apparatus of the cartridge type having a photosensitive drum, a staticization charger, a destaticizer and any other peripheral processor units, a variable width slit formed above the drum and in the optical path between the light source and the photosensitive drum for regulating the amount of light reaching the drum. The variable width slot acts as a compensation devise to compensate for varying sensitivity of the photosensitive drum. The width of the slot is altered by changing the position of a sliding adjustor member so as to vary the amount of light reaching the drum to compensate for the variation of the sensitivity of the drum resulting from the various manufacturing parameters thereby enhancing the reliability of the manufactured apparatus.

REFERENCES:
patent: 4176943 (1979-12-01), Hasebe
patent: 4279497 (1981-07-01), Satomi
patent: 4607941 (1986-08-01), Honda
patent: 4699494 (1987-10-01), Honda
patent: 5006497 (1991-11-01), Nakata et al.

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