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:
Oct. 28, 1986
Filed:
Jul. 26, 1985
Applicant:
Inventors:
Kazuhiro Kameyama, Higashiyamatoshi, JP;
Nobuo Akiba, Higashiyamatoshi, JP;
Assignees:
Casio Electronics Mfg. Co., Ltd., Tokyo, JP;
Casio Computer Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ; G03G / ;
U.S. Cl.
CPC ...
355-4 ; 355 / ;
Abstract
When, in a two-color image forming apparatus, a first visible image is formed on a photosensitive drum, and sequentially a second visible image is formed on the drum on which the first visible image remains, said second visible image being different in color from said second visible image, a cylindrical non-magnetic sleeve rotates in a direction opposite to a rotation of a permanent magnet equipped with the sleeve, thereby enabling a developer to be conveyed in a direction opposite to a rotation of the permanent magnet.