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. 04, 2015
Filed:
Feb. 25, 2013
Canon Kabushiki Kaisha, Tokyo, JP;
Masato Koyanagi, Mishima, JP;
Gosuke Goto, Kawasaki, JP;
Kazutoshi Ishida, Mishima, JP;
Masahiro Kurachi, Fujisawa, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
An image forming apparatus is provided which includes a development device that has no developer supply member and with which the decrease in density at a back end of a solid image and occurrence of ghosting are suppressed. A development roller having dielectric portions scattered on a surface thereof is provided and components are configured so that the position of the dielectric portions in a triboelectric series is on the same polarity side, relative to a regulating blade, as the normal charge polarity of the toner.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile