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:
Oct. 13, 2009
Filed:
Jul. 17, 2006
Kenji Sato, Saitama, JP;
Kenji Sato, Saitama, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
The present invention provides an image reading apparatus which controls conveyance of an original in accordance with the temperature of a conveyance roller for conveying the original, and which performs appropriate conveyance by determining the presence of an abnormality in a temperature detection operation. A copying apparatus uses a temperature detection sensor to detect the temperature of an outlet conveyance roller for conveying an original, which is driven to rotate by a stepping motor, and adjusts the speed at which the original is conveyed by the outlet conveyance roller to a predetermined basic conveyance speed by controlling the rotation of the stepping motor on the basis of a detection signal of the temperature detection sensor. Further, the presence of an abnormality in the detection signal of the temperature detection sensor is determined, and if an abnormality is present, conveyance speed adjustment is halted.