Image density control apparatus

Details Image density control apparatus Image density control apparatus

1984-08-01

1986-12-09

Prescott, A. C.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 14C, 355 14E, 355 14D, G03G 1500

Patent

active

046277129

ABSTRACT:
Image density control apparatus including a photosensor for detecting a density of an image of an original, and a microcomputer for controlling a light intensity of a light source of a development bias voltage. The microcomputer has a CPU for determining a control output in response to a detection signal from the photosensor and in response to signals from a ROM corresponding to respective positions on the image of the original.

REFERENCES:
patent: 3926518 (1975-12-01), Berry et al.
patent: 4153364 (1979-05-01), Suzuki et al.
patent: 4200391 (1980-04-01), Sakamoto et al.
patent: 4239374 (1980-12-01), Tatsumi et al.
patent: 4352553 (1982-10-01), Hirahara
patent: 4354758 (1982-10-01), Futaki
patent: 4472046 (1984-09-01), Kohyama

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