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:
Jul. 31, 2007
Filed:
Mar. 29, 2005
Akihito Kanamori, Numazu, JP;
Satoru Izawa, Shizuoka-ken, JP;
Fumiki Inui, Mishima, JP;
Hiroto Hasegawa, Mishima, JP;
Eiji Uekawa, Mishima, JP;
Shinji Hashiguchi, Mishima, JP;
Koji Nihonyanagi, Susono, JP;
Toshiya Kaino, Susono, JP;
Masami Takeda, Mishima, JP;
Akihito Kanamori, Numazu, JP;
Satoru Izawa, Shizuoka-ken, JP;
Fumiki Inui, Mishima, JP;
Hiroto Hasegawa, Mishima, JP;
Eiji Uekawa, Mishima, JP;
Shinji Hashiguchi, Mishima, JP;
Koji Nihonyanagi, Susono, JP;
Toshiya Kaino, Susono, JP;
Masami Takeda, Mishima, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image heating apparatus for heating an image formed on a recording material, the apparatus including a conveying roller for conveying a recording material, the conveying roller including a metal core and an elastic layer provided outside the metal core, wherein the metal core has, in a central portion in the longitudinal direction thereof, a straight shape area having a substantially uniform diameter along the longitudinal direction and tapered shape areas, on both sides of the straight shape area, in which a diameter gradually decreases toward ends in the longitudinal direction, and wherein the elastic layer has, in a central portion in the longitudinal direction thereof, a straight shape area having a substantially uniform diameter along the longitudinal direction and inverted crown shape areas, on both sides of the straight shape area, in which a diameter gradually increases toward ends in the longitudinal direction. This configuration allows to prevent defects in image heating while suppressing creases in the recording material.