Patent ID: 8777220

Claim:
A sheet feeding device, comprising: a conveying roller configured to rotate in a first direction and convey a sheet in a conveying direction; a shaft connected through an one-way clutch structure to the conveying roller, configured to rotate in the first direction and a second direction opposite to the first direction, configured to transmit torque to the conveying roller to cause the conveying roller to rotate in the first direction if the shaft rotates in the first direction, configured to not transmit the torque to the conveying roller if the shaft rotates in the second direction, and configured to limit the rotation of the conveying roller in the second direction if the shaft is in a rotation-stop state; a separating roller arranged opposite to the conveying roller, the conveying roller and the separating roller forming a nip to nip the sheet; a first motor configured to drive the rotation of the shaft; a second motor configured to drive the rotation of the separating roller; and a controller configured to operate in a first mode in which the first motor drives the shaft to rotate in the first direction to cause the conveying roller to rotate in the first direction and the second motor drives the separating roller in a third direction to feed the sheet in a direction opposite to the conveying direction, and in a second mode in which the first motor drives the shaft to rotate in the second direction to allow the conveying roller to be rotated in the second direction and the second motor drives the separating roller in the same direction as in the first mode, wherein in the second mode, the controller starts the second motor after the controller starts the first motor.