Image density control device having an original mounting element

Details Image density control device having an original mounting element Image density control device having an original mounting element

1994-06-20

1996-04-09

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355 69, 355 77, 355228, G03G 2100

Patent

active

055066593

ABSTRACT:
The present invention is directed to an image density control device in an image formation apparatus where a pattern of reference density on a sample original is exposed to light from an exposing light source to image the pattern on photoconductor, density of the resultant toner image is detected by a reflection-type photosensor, and parameters on image density are adjusted based upon results of detection by the reflection-type photosensor. In the image density control device in the image formation apparatus, the sample original is mounted on a cabinet of the image formation apparatus so that a distance from the exposing light source in illuminating the pattern of the reference density to the pattern of the reference density can be adjusted.

REFERENCES:
patent: 4313671 (1982-02-01), Kuru
patent: 4806775 (1989-02-01), Uchida
patent: 4860059 (1989-08-01), Terashita
patent: 4922087 (1990-05-01), Nakajima et al.
patent: 4931827 (1990-06-01), Yoshino
patent: 4982232 (1991-01-01), Naito
patent: 5195148 (1993-03-01), Sugiura
patent: 5214518 (1993-05-01), Kato

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