Apparatus for controlling the density of a reproduced image in a

Details Apparatus for controlling the density of a reproduced image in a Apparatus for controlling the density of a reproduced image in a

1979-01-05

1981-06-09

Moses, R. L.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

118665, 118679, 250206, 355 3DD, G03G 1500

Patent

active

042721822

ABSTRACT:
Apparatus for controlling the density of a reproduced image of an original to be copied in an electrophotographic copying machine by maintaining a fixed, predetermined image-developing bias voltage during development of a reference patch image and controlling the bias voltage in response to settings of image density selectors during the development of the original image.

REFERENCES:
patent: 3872825 (1975-03-01), Davidson
patent: 3873197 (1975-03-01), Whited
patent: 4050806 (1977-09-01), Miyakawa et al.

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