Image exposing and forming apparatus with original density detec

Details Image exposing and forming apparatus with original density detec Image exposing and forming apparatus with original density detec

1992-12-30

1993-11-09

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

355 68, 355 69, 355228, G03G 1504, G03G 1500

Patent

active

052607453

ABSTRACT:
An original image processing apparatus such as a copying machine has a fluorescent lamp for exposing an original image, a photodiode for detecting the quantity of light reflected from a standard white plate or the original, an optical system for forming an image on a transfer sheet, and a control circuit for controlling the DC vias of a developing unit in accordance with a detection result of the photodiode. The apparatus can form images at optimal densities.

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patent: 4660961 (1987-04-01), Kuramoto
patent: 4677287 (1987-06-01), Ejima
patent: 4702590 (1987-10-01), Usami

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