Means for exposing original on image forming apparatus to provid

Details Means for exposing original on image forming apparatus to provid Means for exposing original on image forming apparatus to provid

1993-09-20

1995-07-25

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355219, 355228, G03G 1504

Patent

active

054367026

ABSTRACT:
An image forming-apparatus of the present invention includes a charging device for applying a first potential and a second potential to a photosensitive drum, a keyboard for inputting a magnification of a copy image to be formed on the photosensitive drum, and a controller for controlling the charging device to control the magnitude of the potentials applied to the photosensitive drum from the charging device in accordance with the magnification input by the keyboard, thus increasing a difference between the first and second potentials in accordance with the degree of variation of the magnification in the case where the magnification input by the keyboard is less than 1.00.

REFERENCES:
patent: 4480909 (1984-11-01), Tsuchiya
patent: 4872035 (1989-10-01), Miyake et al.
patent: 5267000 (1993-11-01), Miyamoto et al.

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