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. 13, 2013
Filed:
Feb. 28, 2012
Tomoko Mine, Tokyo, JP;
Mikihiko Sukeno, Hyogo, JP;
Tatsuya Nagase, Tokyo, JP;
Tomomi Oshiba, Tokyo, JP;
Hiroyuki Kozuru, Yamanashi, JP;
Saburou Hiraoka, Tokyo, JP;
Yoshiyasu Matsumoto, Tokyo, JP;
Kosuke Nakamura, Tokyo, JP;
Hitomi Motani, Tokyo, JP;
Takanari Kayamori, Kanagawa, JP;
Tomoko Mine, Tokyo, JP;
Mikihiko Sukeno, Hyogo, JP;
Tatsuya Nagase, Tokyo, JP;
Tomomi Oshiba, Tokyo, JP;
Hiroyuki Kozuru, Yamanashi, JP;
Saburou Hiraoka, Tokyo, JP;
Yoshiyasu Matsumoto, Tokyo, JP;
Kosuke Nakamura, Tokyo, JP;
Hitomi Motani, Tokyo, JP;
Takanari Kayamori, Kanagawa, JP;
Konica Minolta Business Technologies, Inc., Tokyo, JP;
Abstract
A two-component developer is disclosed, composing a toner comprising parent toner particles with an attached external additive and a carrier provided with a resin covering layer on a surface of a core particle, wherein the resin covering layer comprises a binder resin comprising an acrylic resin and when the resin covering layer is divided in half to a core particle side and a surface side, a nitrogen element content of the core particle side is larger than a nitrogen element content of the surface side.