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. 09, 1993
Filed:
Nov. 25, 1992
Applicant:
Inventors:
Seiko Uwagawa, Kita-Katsuragi, JP;
Yukihisa Imaue, Ikoma, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355246 ; 355204 ; 355208 ; 355215 ;
Abstract
A developing apparatus includes a developing bath for storing developing powder, a developing roller rotatably disposed inside of the developing bath, a bias circuit for applying a bias voltage for adjusting an image quality to the developing roller, a unit for recovering the developing powder from the developing bath, and a device for controlling operation of the bias circuit such that the bias circuit applies a bias voltage higher than a bias voltage for developing to the developing roller when recovering the developing powder.