Image density control method and color image forming apparatus

Details Image density control method and color image forming apparatus Image density control method and color image forming apparatus

1990-12-13

1992-01-21

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

355214, 355246, 355327, G03G 1501, G03G 1508

Patent

active

050831607

ABSTRACT:
An image density control method and a color image forming apparatus for controlling the density of a multi-color image to be reproduced, having functions of forming for each color a first reference latent image, to be developed in a medium density, on a latent image carrying member, forming for each color a second reference latent image, to be developed in a low density, on the latent image carrying member, depositing toner of a color corresponding to each of the first and second reference latent images on respective of the first and second reference latent images, sensing the quantities of different by colored toners deposited on respective of the first and a second reference latent images for each color and controlling, at least one image forming condition in the formation of images of each color to correct the density of the medium toner density portion of the image for toner color on the basis of the sensed results.

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patent: 4468112 (1984-08-01), Suzuki et al.
patent: 4519695 (1985-05-01), Murai et al.
patent: 4572654 (1986-02-01), Murai et al.

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