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:
Jun. 06, 2006
Filed:
May. 14, 2004
Katsumi Takahashi, Ibaraki, JP;
Katsumi Takahashi, Ibaraki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Image heating apparatus includes an image heating rotation member, for heating an image on a recording material, a driving device rotationally driving the image heating rotation member, an external heating member including an exothermic member heating the image heating rotation member in a way that contacts the image heating rotation member, a contacting-and-separating device for making the external heating member contact and separate from the image heating rotation member, a conduction control device for controlling conduction to the exothermic member so that a temperature of the external heating member becomes a target temperature, a contacting-and-separating state detecting device for detecting a contacting-and-separating state of the external heating member, and an abnormality detecting device for detecting an abnormality of the contacting-and-separating state of the external heating member rendered contacting and separating by the contacting-and-separating device, based on the detection by the contacting-and-separating state detecting device.