The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Nov. 13, 1990

Filed:

Jun. 09, 1988
Applicant:
Inventors:

Satoshi Haneda, Hachioji, JP;

Hisashi Shoji, Hachioji, JP;

Seiichiro Hiratsuka, Hachioji, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D / ; G03G / ;
U.S. Cl.
CPC ...
346157 ; 355246 ; 355327 ;
Abstract

An apparatus having a plurality of developing devices for forming a multiple toner picture image composed of a plurality of layer toner picture images prepared from developed latent picture images formed on an image retainer by turning the image retainer a plurality of times. In the apparatus, latent reference images of different colors are formed on regions of the image retainer based on reference signals and the plurality of developing devices are used to develop the latent reference images to form a plurality of reference toner images. The data derived from the reference toner images is used to set up the image-forming conditions for forming a latent picture image on a common region of the image retainer, based on picture image signals received by the apparatus, when the toner picture image is formed on the image retainer.


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