Patent ID: 8733754

Claim:
A sheet conveying device comprising: a lift plate onto which a sheet of recording medium is placed; a sheet conveying path configured to convey the sheet of recording medium placed on the lift plate in a predetermined sheet conveying direction; a slope part attached to the lift plate and configured to slope downward in the sheet conveying direction; a biasing member configured to apply a force to the lift plate to cause a leading edge of the sheet of recording medium in the sheet conveying direction to move upward; a feed roller, which is arranged to be contactable with the leading edge of the sheet of recording medium, configured to be rotationally driven to feed the sheet of recording medium in the sheet conveying direction; a conveyance roller, which is arranged downstream of the feed roller in the sheet conveying direction, configured to be rotationally driven to convey the sheet of recording medium fed out by the feed roller; a rotation shaft, which extends in a sheet width direction perpendicular to the sheet conveying direction, configured to rotatably support the feed roller; a cam member, which is arranged at the rotation shaft to be rotatable in unison with the rotation shaft, configured to be contactable with the slope part; a driving unit configured to generate a rotational driving force to cause the feed roller and the conveyance roller to rotate; and a gear train configured to be connected to the driving unit such that the gear train is rotationally driven; wherein the gear train comprises: a first transmission part configured to transmit the rotational driving force to one of the conveyance roller and the rotation shaft; a second transmission part, which is arranged coaxial with the first transmission part, configured to be relatively rotatable with respect to the first transmission part and to transmit the rotational driving force to the other one of the conveyance roller and the rotation shaft; and a restriction member configured to allow a predetermined amount of relative rotation of the second transmission part with respect to the first transmission part and to subsequently restrict the relative rotation.