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. 18, 1992
Filed:
Jan. 15, 1991
Minoru Nakamura, Toyohashi, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
An image forming apparatus comprising first and second developing units each of which has detector for detecting toner density in the developing unit, input member for inputting toner replenishment instructions to each of the first and second developing units, and first and second replenishing members provided respectively to the first and second developing units for replenishing the toner in response to the input of the toner replenishment instructions by an operator. One of the first and second developing units is selected by the operator upon the copying. In this image forming apparatus, the replenishing members replenish the toner to the first and second developing units having toner densities of less than a predetermined value irrespective of the selection of the developing units.