Patent ID: 7455287
Filing Date: 2008-11-25
Classification: B65H

Abstract:
1. A recording medium feeder comprising: a tray configured to receive a plurality of recording mediums, the plurality of recording mediums being stacked on the tray; a feed roller, having a rotational axis that moves substantially vertically with respect to the tray between two locations based on an amount of recording mediums stacked on the tray and feeds the recording mediums stacked on the tray; a first friction member provided on the tray at a position opposing the feed roller and having high friction coefficient, said first friction member having a first surface; and a second friction member provided on the tray at a position opposing the feed roller and having low friction coefficient that is lower than the friction coefficient of the first friction member, said second friction member having a second surface, wherein the first friction member is configured to move between a protruded position in which the first surface protrudes above the second surface toward the feed roller and a retracted position in which the first surface is arranged to be not higher than the second surface.