Patent ID: 8292288
Filing Date: 2012-10-23
Classification: B65H,F16H

Abstract:
1. A feeding device for separating and conveying recording sheets stacked on a stacking portion one by one, the feeding device comprising: a driving motor; a feeding roller configured to convey a recording sheet; a pressing plate on which a plurality of recording sheets can be stacked; an urging unit configured to urge the pressing plate against the feeding roller; a control cam configured to cause the pressing plate to swing between a position at which a recording sheet on the pressing plate is pressed into contact with the feeding roller and a position at which the recording sheet is spaced apart from the feeding roller; a control-cam driving gear configured to drive the control cam; and a drive transmitting unit configured to transmit a driving force from the driving motor to the control-cam driving gear through a plurality of gears, the drive transmitting unit comprising: wherein the retaining unit is formed of at least a fit section disposed in the swinging member and a lever member that can be fit in the fit section, the releasing unit is formed of at least a cam surface disposed in the control-cam driving gear and a cam follower section disposed in the swinging member so as to be able to engage with the cam surface, the control-cam driving gear includes a toothless part that does not engage with the transmission gear and that is incapable of transmitting a drive, the retaining unit brings the swinging member to the state in which the swinging member can swing from a state in which the transmission gear and the control-cam driving gear are disengaged by the toothless part, and driving the drive motor causes the control-cam driving gear and the planetary gear to engage with each other and rotates the control-cam driving gear, and after the toothless part is passed and the transmission gear and the control-cam driving gear become engaged, the releasing unit disengages the planetary gear and the control-cam driving gear.