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:
Jan. 29, 2008
Filed:
Jul. 01, 2005
Takashi Suzuki, Ibaraki, JP;
Teruaki Mitsuya, Ibaraki, JP;
Keisuke Kubota, Ibaraki, JP;
Masato Miwa, Ibaraki, JP;
Yoshitaka Fujinuma, Ibaraki, JP;
Tsutomu Nakagawa, Ibaraki, JP;
Takashi Suzuki, Ibaraki, JP;
Teruaki Mitsuya, Ibaraki, JP;
Keisuke Kubota, Ibaraki, JP;
Masato Miwa, Ibaraki, JP;
Yoshitaka Fujinuma, Ibaraki, JP;
Tsutomu Nakagawa, Ibaraki, JP;
Ricoh Printing Systems, Ltd., Tokyo, JP;
Abstract
A fixing device wherein supposing that the total load given to a heating roller and a pressure roller is W (kgf) and the area of the pressure contact portion of the heating roller with respect to the pressure roller (nip area) is S (cm), the nip pressure (=W/S) is 2.7 kgf/cmor more and the length of the pressure contact portion in the direction parallel to the direction of conveyance of a recording material is defined to be 14 mm or more.