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 on a sheet mounting tray into a carrying path one sheet at a time; a sheet carrying device rotating the pickup roller; a control section controlling a roller first driving motor; and a carrying delay detecting section detecting delay in sheet carrying carried out by the pickup roller. The control section controls the roller first driving motor, in a case where the delay in the sheet carrying is detected by the carrying delay detecting section, so that (i) the pickup roller once stops and then restarts rotating and (ii) a start-up acceleration of the pickup roller, which start-up acceleration is an acceleration from the restart of rotation to arrival at a predetermined speed, becomes lower than a first start-up acceleration from start of rotation of the pickup roller to arrival at the predetermined speed in a case where there is no delay in the sheet carrying. This makes it possible to prevent process efficiency from deteriorating due to retry, in an arrangement in which a feeding operation of a sheet from the sheet mounting try is retried.