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:
Feb. 15, 2005
Filed:
Oct. 22, 2002
Naotaka Ikeda, Ibaraki, JP;
Kenji Okado, Shizuoka, JP;
Yushi Mikuriya, Shizuoka, JP;
Shinya Yachi, Shizuoka, JP;
Kazumi Yoshizaki, Ibaraki, JP;
Katsuyuki Nonaka, Shizuoka, JP;
Naotaka Ikeda, Ibaraki, JP;
Kenji Okado, Shizuoka, JP;
Yushi Mikuriya, Shizuoka, JP;
Shinya Yachi, Shizuoka, JP;
Kazumi Yoshizaki, Ibaraki, JP;
Katsuyuki Nonaka, Shizuoka, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In a full-color image-forming method having at least a charging step, a latent-image-forming step, a developing step of developing an electrostatic latent image by the use of a developer; a transfer step, and a fixing step, the developer comprises a plurality of color developers and a black developer. The color developers are each a two-component developer for full-color image formation which has i) a color toner having color toner particles containing at least a binder resin, a colorant and a wax and ii) a carrier for the color developer. The black developer is a two-component developer for full-color image formation which has i) a black toner having black toner particles containing at least a binder resin, carbon black and a wax and ii) a carrier for the black developer. The carrier for the black developer has a larger absolute value of charge quantity when the same toner is used, than the respective carriers for the color developers.