Image forming apparatus provided with surface potential control

Details Image forming apparatus provided with surface potential control Image forming apparatus provided with surface potential control

1980-05-20

1982-10-26

Braun, Fred L.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

324457, 355 3CH, 361235, G03G 1500

Patent

active

043558852

ABSTRACT:
Image forming apparatus having a surface potential control device incorporated therein, in which magnitude of a measured value of the surface potential sensor and an aimed potential value is discriminated, and an output from an output device such as an exposure device that affects the image formation is increased or decreased for a predetermined value by the discriminated output, and in which the measuring, discriminating, adding and subtracting operations are repeated to control the surface potential within a predetermined range in a definite number of times for the measurement by decreasing the adding and subtracting quantities with increase in the number of times for the repeated operations.

REFERENCES:
patent: 4019102 (1977-04-01), Wallot
patent: 4136942 (1979-01-01), Nakahata et al.
patent: 4166690 (1979-09-01), Bacon et al.

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