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. 22, 1991
Filed:
Jun. 27, 1990
Teruaki Higashiguchi, Tokyo, JP;
Takeshi Hori, Yokohama, JP;
Mita Industrial Co., Ltd., Osaka, JP;
Abstract
The present invention relates to a developing process for forming a high-quality image in the electrophotography. In this developing process, a two-component type developer is used and the moving direction of a developing sleeve is the same as the moving direction of a photosensitive material drum at the position of the sliding contact of the photosensitive material drum with a magnetic brush of the developer. In carrying out this forward direction sliding contact developing process, by setting the angle .theta. of a fixed main developing pole to the direction reverse to the moving direction of the sleeve from the line connecting the centers of the drum and sleeve and the drum/sleeve diameter ratio within certain specific ranges, the reproducibility of fine lines and the image density can be simultaneously improved very effectively in a well-balanced state, and a toner image having a high quality can be formed.