Image density control device

Details Image density control device Image density control device

1994-12-30

1996-10-22

Smith, Matthew S.

Photocopying

Contact printing

Light boxes

355208, 355214, G03G 2100

Patent

active

055682340

ABSTRACT:
A density control device includes an image forming unit for forming a sample image having a predetermined density onto a recording medium, a density detecting unit for detecting the density of the surface of the recording medium, and a control unit for causing the density detecting unit to detect a first density of an area where no sample image is formed on the recording medium and a second density of an area where any sample image is formed, and determining the operation conditions of the image forming unit, based on a contrast value between the first density and the second density which have been detected.

REFERENCES:
patent: 4277162 (1981-07-01), Kasahara et al.
patent: 4502778 (1985-03-01), Dodge et al.
patent: 5175585 (1992-12-01), Matsubayashi et al.
patent: 5250988 (1993-10-01), Matsuura et al.
patent: 5294959 (1994-03-01), Nagao et al.
patent: 5307119 (1994-04-01), Folkins et al.
patent: 5325153 (1994-06-01), Mitsuse et al.
patent: 5400120 (1995-03-01), Narazaki et al.

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