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.
Patent No.:
Date of Patent:
Jan. 31, 1989
Filed:
Oct. 28, 1987
Applicant:
Inventors:
Tomio Arai, Hachioji, JP;
Hiroshi Kuru, Hachioji, JP;
Assignee:
Konica Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355 / ; 355 / ; 355 / ; 118689 ; 430 30 ;
Abstract
A toner density control apparatus wherein an image density of a reference image on a photosensitive member is compared with a predetermined level to control a toner density, a voltage to be applied on a light-emitting element is controlled according to a difference between an output of a light-receiving element when it receives a light reflected from a non-image surface region on the photosensitive member and correction reference data, and a signal is supplied to the outside when the voltage is increased more than a predetermined value.