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:
Dec. 28, 1982
Filed:
May. 28, 1980
Applicant:
Inventor:
Hiroya Nakamura, Hachioji, JP;
Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ; G03G / ;
U.S. Cl.
CPC ...
355 77 ; 355140 ;
Abstract
A method of controlling toner concentration in an electrophotographic recording apparatus includes placement of a reference image in the form of a density pattern on the electrostatic member preceding or following an information image thereon. Photoelectric sensing of this pattern controls selective addition of toner to the developer and variation in the pattern to maintain a predetermined concentration of toner therein in accordance with the sensed density of the developed reference image. The pattern is preferably in the form of pulses to avoid edge effects.
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Nakamura, Hiroya. (1982). Method for controlling toner concentration (U.S. Patent No. 4365894). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4365894
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile