| 主权项 |
1. A conveyor, comprising:
a motor that is rotated forwardly and reversely; a driven member that is driven by rotation caused by at least one of forward rotation and reverse rotation of the motor, the caused rotation being transmitted from the motor; a first roller provided on a first conveyance path through which a sheet is to be conveyed; a first power transmitting mechanism configured to transmit rotation caused by one of the forward rotation and the reverse rotation of the motor to the first roller and not to transmit rotation caused by the other of the forward rotation and the reverse rotation of the motor from the driven member to the first roller; and a second power transmitting mechanism configured to transmit the rotation caused by the other of the forward rotation and the reverse rotation of the motor to the first roller and not to transmit the rotation caused by the one of the forward rotation and the reverse rotation of the motor to the first roller, the second power transmitting mechanism comprising:
a sun gear that is rotated in a first rotational direction by receiving the rotation caused by the one of the forward rotation and the reverse rotation of the motor from the driven member and that is rotated in a second rotational direction by receiving the rotation caused by the other of the forward rotation and the reverse rotation of the motor from the driven member, the second rotational direction being reverse to the first rotational direction;an arm pivotably supported by the sun gear;a planetary gear rotatably supported by the arm in a state in which the planetary gear is engaged with the sun gear, the planetary gear being configured to be revolved around the sun gear; anda transmission gear engageable with the planetary gear and configured to transmit, to the first roller, rotation of the motor which is transmitted from the planetary gear, the planetary gear being configured to be revolved, in a direction in which the planetary gear is moved away from the transmission gear, by rotation of the sun gear in the first rotational direction, the planetary gear being configured to be revolved, in a direction in which the planetary gear is to be engaged with the transmission gear, by rotation of the sun gear in the second rotational direction, the first power transmitting mechanism comprising a transmission delayer that does not transmit the rotation of the motor from the driven member to the first roller until the motor is rotated by a particular amount from a time point at which the motor starts to be rotated in a rotational direction of the one of the forward rotation and the reverse rotation when rotation transmitted from the motor to the driven member is changed from the other of the forward rotation and the reverse rotation to the one of the forward rotation and the reverse rotation. |
