Patent ID: 8864132
Filing Date: 2014-10-21
Classification: B65H

Abstract:
1. A paper feeder comprising: a paper feed roller configured to pick up a sheet loaded on a paper feed tray and convey the sheet in a conveyance direction; a registration roller arranged downstream of the paper feed roller in the conveyance direction and configured to convey the sheet conveyed from the paper feed roller; a detection unit configured to detect the sheet at a position between the paper feed roller and the registration roller; and a controller configured to control the paper feed roller and the registration roller, wherein the controller performs control for each sheet of a plurality of sheets to be fed such that wherein upon continuous feeding of the plurality of sheets, the controller performs control such that the paper feed roller is started to feed a subsequent sheet while the registration roller conveying a precedent sheet is being driven, wherein a timing of starting the registration roller for the plurality of sheets is predetermined, and wherein upon continuous feeding of the plurality of sheets, and upon detection of the leading end of the sheet by the detection unit before an elapse of a first time after a start of the paper feed roller, the controller further performs control such that a paper conveyance speed of the paper feed roller is set lower than a paper conveyance speed of the registration roller, and the paper feed roller is stopped after conveying the sheet having the leading end detected for the specified conveyance distance before a next timing of starting the registration roller.