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:
Nov. 22, 1983
Filed:
May. 26, 1982
Takafumi Tottori, Toyokawa, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
The disclosure is directed to an improved electrophotographic copying apparatus which includes a detector for detecting amount of toner adhering to a reference latent image, a replenishing device for replenishing toner to a developer in a developing device when the toner amount detected by the detector falls below reference toner amount and a correcting device for changing the reference toner amount, and/or voltage of a developing bias power source at a time when the reference latent image is developed, according to an operation for altering original document projecting magnifications, so that toner concentration of the developer may be maintained in the best condition at a reduced size magnification as well as an equal size magnification.