Patent ID: 8016284
Filing Date: 2011-09-13
Classification: B65H

Abstract:
1. A sheet feeding device comprising: a sheet support configured to place a sheet thereon; detection means configured to detect presence or absence of the sheet on the sheet support; a pickup roller supported for vertical movement between a lower limit position at which the pickup roller is brought into contact with an upper surface of the sheet support and an upper limit position spaced apart from the upper surface of the sheet support by a first distance and configured to feed the sheet from the sheet support by rotation; a driving mechanism configured to cause the pickup roller to move vertically; and a control section configured to perform a first control when the sheet is not detected by the detection means, the first control for causing the pickup roller to move down to the lower limit position and then move up to the upper limit, and a second control when the sheet is detected by the detection means, the second control for causing the pickup roller to move up by a second distance which is shorter than the first distance, the second distance is a distance where the pickup roller does not reach the upper limit position, by means of the driving mechanism during an initial operation to be performed prior to sheet feed request upon powering on or after paper jam elimination.