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:
Mar. 20, 2012
Filed:
Jan. 21, 2010
Yoshinobu Baba, Yokohama, JP;
Koh Ishigami, Mishima, JP;
Tomoko Endo, Odawara, JP;
Hiroyuki Fujikawa, Yokohama, JP;
Kunihiko Nakamura, Gotemba, JP;
Nozomu Komatsu, Mishima, JP;
Chika Inoue, Berlin, DE;
Takayuki Itakura, Mishima, JP;
Yoshinobu Baba, Yokohama, JP;
Koh Ishigami, Mishima, JP;
Tomoko Endo, Odawara, JP;
Hiroyuki Fujikawa, Yokohama, JP;
Kunihiko Nakamura, Gotemba, JP;
Nozomu Komatsu, Mishima, JP;
Chika Inoue, Berlin, DE;
Takayuki Itakura, Mishima, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A magnetic carrier is provided which uses a toner having high coloring power and enables development to be performed at low electric field intensity and can form high quality images while keeping gradation characteristics. The magnetic carrier includes magnetic carrier particles including at least porous magnetic core particles and a resin. The electric field intensity just before the break-down of the magnetic carrier is 1,300 V/cm or more and 5,000 V/cm or less.