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:
Sep. 14, 1993

Filed:

Nov. 26, 1991
Applicant:
Inventors:

Tsugihito Yoshiyama, Toyohashi, JP;

Tadafumi Shimizu, Kurume, JP;

Hiroyuki Ideyama, Toyokawa, JP;

Yoshihiko Hatta, Toyokawa, JP;

Masazumi Ito, Toyohashi, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355246 ; 355208 ;
Abstract

An image forming apparatus wherein the copying operation is performed not only in an automatic density specifying mode but also in a manual density specifying mode according to select by an operator. When the ratio of the frequency of select of the manual density specifying mode to the frequency of select of the automatic density specifying mode has exceeded a predetermined value, the image forming apparatus is adapted to execute an image adjustment process by detecting the state of components, for example, charge wires for the purpose of adjusting the density of copy images formed in the automatic density specifying mode.


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