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. 30, 2012
Filed:
Oct. 20, 2006
Masayoshi Shimamura, Yokohama, JP;
Yasuhide Goseki, Yokohama, JP;
Yasutaka Akashi, Tokyo, JP;
Kazunori Saiki, Yokohama, JP;
Satoshi Otake, Numazu, JP;
Nene Dojo, Numazu, JP;
Minoru Ito, Susono, JP;
Masayoshi Shimamura, Yokohama, JP;
Yasuhide Goseki, Yokohama, JP;
Yasutaka Akashi, Tokyo, JP;
Kazunori Saiki, Yokohama, JP;
Satoshi Otake, Numazu, JP;
Nene Dojo, Numazu, JP;
Minoru Ito, Susono, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A developer carrying member is provided which, even in continuous copying over a long term and also even under different environmental conditions, do not cause any charge-up of toner, and prevent the toner from melt-adherent to the developer carrying member surface and developer layer thickness control member surface to maintain the state of uniform coating of a developer having a toner and to make the toner uniformly and quickly triboelectrically charged, so as to obtain high-grade images free of any image density decrease, image density non-uniformity, sleeve ghosts, fog and vertical streaks during running service. Provided are a developer carrying member having a substrate and a resin coat layer on the surface of the substrate, which resin coat layer contains at least a binder resin and a carbon black, where the graphite (002) plane obtained from X-ray diffraction of the carbon black has a lattice spacing of from 0.3370 nm or more to 0.3450 nm or less; and a developing assembly having such a developer carrying member.