Multicolor electrostatic recording appartus having electrostatic

Details Multicolor electrostatic recording appartus having electrostatic Multicolor electrostatic recording appartus having electrostatic

1995-11-28

1998-02-24

Royer, William J.

Electrophotography

Control of electrophotography process

Color balance

399 50, 399 51, 399 53, G03G 1500

Patent

active

057220034

ABSTRACT:
In a multicolor electrostatic recording apparatus in which two or more different color toner images are superimposed by respective electrostatic recording units, each of the electrostatic recording units includes an electrostatic latent image carried, a developer for developing an electrostatic latent image formed on the carrier with a color toner, and a detector for detecting a density of the developed image on the basis of a detecting mark which is formed on the carrier as a part of the latent image and developed by the developer. A discriminator which compares the density data with an optional desired density value to discriminate whether the density data falls in an allowable range. A controller for feed-back controlling at least one parameter for determining the density of the developed image so that the density comes to be in the allowable range, when the density falls out of the allowable range. The at least one parameter is memorized as a compensating data for the density of the developed image, when the density falls in the allowable range. Thus, using the compensating data, a process using the parameter for determining the density of the developed image is carried out. The detector for detecting density includes a light emitting section and a light receiving unit.

REFERENCES:
patent: 4989043 (1991-01-01), Suzuki et al.
patent: 5262833 (1993-11-01), Fukushima et al.
patent: 5343282 (1994-08-01), Kazaki et al.
patent: 5486901 (1996-01-01), Fukuchi et al.
patent: 5491536 (1996-02-01), Mashiba et al.

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