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. 06, 2010
Filed:
Aug. 29, 2008
Kazutaka Matsumoto, Sakurai, JP;
Kazutaka Matsumoto, Sakurai, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A sheet carrying device includes a pickup roller sending out a sheet to a carrying path one by one from a document mounting tray, a roller first driving motor rotating the pickup roller, a control section controlling the roller first driving motor, and a slip detecting device detecting whether the pickup roller slips in an amount not less than a predetermined amount in carrying the sheet. Detecting that the pickup roller slips, the control section controls the roller first driving motor to perform a slip-settling operation for decreasing a start-up acceleration of the pickup roller from a time when starting to rotate to a time when reaching a predetermined speed. This allows reliably carrying a sheet and suppressing a decrease in a carrying speed of the sheet in order to prevent a decrease in a speed of a process including sheet carrying, even when the pickup roller slips in feeding the sheet from the sheet mounting tray.