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:
Jun. 05, 2012
Filed:
May. 28, 2008
Takanori Kamoto, Yamatokoriyama, JP;
Tadashi Iwamatsu, Nara, JP;
Nobuyuki Yoshioka, Ikeda, JP;
Yoshinori Mutoh, Kitakatsuragi-gun, JP;
Hiroyuki Hirakawa, Tenri, JP;
Takashi Hara, Tenri, JP;
Takanori Kamoto, Yamatokoriyama, JP;
Tadashi Iwamatsu, Nara, JP;
Nobuyuki Yoshioka, Ikeda, JP;
Yoshinori Mutoh, Kitakatsuragi-gun, JP;
Hiroyuki Hirakawa, Tenri, JP;
Takashi Hara, Tenri, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A carrier of the present invention is used in a developer including a toner which includes at least a binder resin and an organic colorant, and the carrier has a core and a coating formed on the surface of the core, the coating including (i) a charge control agent for controlling a charge whose polarity is the same as a polarity of a charge controlled by a charge control agent included in the toner, and (ii) a conductive particles. The use of the carrier of the present invention enables: prevention of decrease in the charging amount of the toner which includes at least a binder resin and an organic colorant; and formation of a stable, high-resolution, high-quality image which has very few image defects such as a photographic fog.