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:
Aug. 31, 1982
Filed:
Aug. 16, 1979
Hiroshi Ozawa, Toyokawa, JP;
Masao Tokumoto, Toyokawa, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
A method of controlling toner concentration for an electrophotographic copying apparatus in which voltage to be impressed on a toner collecting or recovering roller disposed to contact a flow of a developing material after developing is arranged to vary so that a voltage lower than that for a reference density image is applied thereto for an image having a high density requiring a large toner consumption, while a voltage higher than that for the reference density image is applied thereto for an image having a low density requiring a small toner consumption.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile