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:
Dec. 15, 1992
Filed:
Mar. 19, 1991
Yosinobu Umetani, Yamato-takada, JP;
Mita Industrial Co., Ltd., Osaka, JP;
Abstract
In forming an image by the simultaneous light exposure-transfer process using a photosensitive toner, a light-exposed electricity-removed toner is effectively scraped without bad influences on the image density, and the fog density is drastically reduced. In subjecting a photosensitive toner layer to imagewise light exposure to form a combination of an electricity-removed toner and a charged toner and removing the electricity-removed toner from an electroconductive substrate by contact with a magnetic brush, the flux density distribution of a main developing pole in a developing sleeve is set so that a two-peak flux density distribution having two peaks separated on the upstream side and downstream side with the vicinity of the nip position between the developing sleeve and electroconductive substrate being as the center is produced in the tangential direction and the value of the peak on the downstream side is smaller than the value of the peak on the upstream side.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile