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:
Nov. 01, 2011
Filed:
Sep. 09, 2008
Atsushi Takai, Atsugi, JP;
Sumio Kamoi, Tokyo, JP;
Kazuo Ishida, Atsugi, JP;
Toshikazu Hirakawa, Zama, JP;
Atsushi Ishibe, Hiratsuka, JP;
Hiroshi Katabami, Chigasaki, JP;
Atsushi Takai, Atsugi, JP;
Sumio Kamoi, Tokyo, JP;
Kazuo Ishida, Atsugi, JP;
Toshikazu Hirakawa, Zama, JP;
Atsushi Ishibe, Hiratsuka, JP;
Hiroshi Katabami, Chigasaki, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A heat-resistant endless resin belt including a heat-resistant resin sheet, which can be employed in a thermal fixing apparatus, wherein the sheet includes two cutting work parts in an inclined shape. The two parts are overlapped with each other and bonded with an adhesive to form a bonding part. An external shape displacement f(x), measured via a flatness measuring apparatus, which scans the belt in a width direction thereof, satisfies a following formula wherein 'X' (mm) is a length of the belt in a width direction thereof; 'L' (mm) is a perimeter of the belt and “g(x)” represents a displacement of an ideal shape of the heat-resistant resin belt, when g(x)=C (a constant), a left side of the formula is set to be a minimum; whilst when g(x) is a variable, the displacement of the ideal shape of the belt is set.