Patent ID: 7798483
Filing Date: 2010-09-21
Classification: B41J,B65H

Abstract:
1. A sheet feeder including a sheet tray which supports sheets, a paper feed roller which feeds the sheets supported by the sheet tray, and a sheet separator having a separation roller and a separation member which separates a sheet fed from the paper feed roller one by one, the sheet feeder comprising; a holding member which holds the separation member and which is applied a force in a direction where the separation member comes into contact with the separation roller, a rockable arm member which is rockable provided and holds the paper feed roller on an upstream side in a sheet feeding direction, and which has a pressing portion capable of pressing the holding member on a downstream side in the sheet feeding direction, a pressure receiving portion which is provided on the holding member and abuts against the pressing portion, a biasing member which is provided on the arm member and applies a force to the pressing portion toward pressure receiving portion on the holding member, an operation mechanism which rocks the arm member in a direction where the paper feed roller is separated from the sheets supported by the sheet tray and the pressing portion presses the holding member, wherein after a sheet fed by the paper feed roller is separated by the sheet separator, the pressing portion presses the pressure receiving portion through the sheet while being applied a force by the biasing member as the arm member is rocked.