Developer concentration controlling device

Details Developer concentration controlling device Developer concentration controlling device

1982-02-11

1984-08-28

Moses, R. L.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 3DD, 118689, G03G 1500

Patent

active

044681127

ABSTRACT:
A device for controlling the developer concentration in an electrophotographic copier or the like, in which a first detector for detecting the developer concentration and a second detector for detecting the image density are utilized for controlling process devices to maintain a constant optimum image density.

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