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:
Sep. 16, 2008
Filed:
Dec. 15, 2004
Toshiaki Kagawa, Kitakatsuragi-gun, JP;
Hiroshi Kida, Yamatokoriyama, JP;
Toyoaki Nanba, Higashiosaka, JP;
Kouji Yamaji, Soraku-gun, JP;
Tatsuya Shinkawa, Nara, JP;
Toshiaki Kagawa, Kitakatsuragi-gun, JP;
Hiroshi Kida, Yamatokoriyama, JP;
Toyoaki Nanba, Higashiosaka, JP;
Kouji Yamaji, Soraku-gun, JP;
Tatsuya Shinkawa, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A fixing device includes a fixing member in contact with an unfixed image constituted of developer T on one side of a recording material P; and a pressure member pressed against the fixing member. The fixing device fixes the unfixed image onto the recording material P by causing the recording material P, charged so as to have a same polarity as a polarity of the developer T, to pass through a gap between the fixing member and the pressure member. In the fixing device, an inflow current into the fixing member Ih is 0 when the recording material P passes through the gap between the fixing member and the pressure member. This securely restrains the developer on the recording material from electrostatically offset to the side of the fixing device, thereby maintaining the formation of high quality images.