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. 21, 2006
Filed:
May. 03, 2004
Kazumi Yoshizaki, Ibaraki, JP;
Kenji Okado, Ibaraki, JP;
Masashige Tamura, Chiba, JP;
Naotaka Ikeda, Ibaraki, JP;
Kazumi Yoshizaki, Ibaraki, JP;
Kenji Okado, Ibaraki, JP;
Masashige Tamura, Chiba, JP;
Naotaka Ikeda, Ibaraki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In an image forming apparatus having a powder transport mechanism including a powder container and a powder transport means which rotates relative to the powder container, the powder transport means has the rotation center substantially on the axis of the powder container, and the space between the inner wall surface of the powder container and the powder transport means is sealed with magnetic particles held by a magnetic-filed generation means. The magnetic particles have a specific saturation magnetization σs and a specific value of A×σwhere the residual magnetic flux density of the magnetic-field generation means is represented by A in a specific range and the magnetization intencity of the magnetic particles in a magnetic field with the residual magnetic flux density A is represented by σ.