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:
Aug. 17, 2010
Filed:
Nov. 27, 2006
Tamaki Mashiba, Nara, JP;
Tamaki Mashiba, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
In a fixing apparatus that has a heating roller, and heats a sheet where an image by a developer has been transferred, to thereby fix the image on the sheet, the following are provided: a first sensor that detects the radiant heat from the heating roller; a second sensor that detects the ambient temperature of the first sensor; a computing circuit that computes a threshold value for determining whether the temperature of the heating roller is abnormal or not; and a controlling circuit that controls the operation condition of the heating roller based on output values of the first sensor and the second sensor and the threshold value computed by the computing circuit.