Patent ID: 7744083

Claim:
A paper feeding apparatus comprising: a knock-up plate for rotating upwardly and downwardly with a first end thereof provided as a hinge shaft; a driving motor; a paper feeding roller assembly for feeding each individual sheet of paper stacked on the knock-up plate by a driving a force from the driving motor; a lift gear unit arranged to upwardly rotate the knock-up plate by the driving force intermittently transmitted from the driving motor through connecting means; a position sensor arranged to detect whether the individual sheets of paper stacked on the knock-up plate reaches a predetermined height suitable to be fed to the paper feeding roller assembly; a controller arranged to control operation of the connecting means based on a signal detected from the position sensor so as to enable transmission of the driving force from the driving motor to the lift gear unit; a one-way gear arranged to receive the driving force from the driving motor, via said connecting means, and transmit the driving force to the lift gear unit; a driving gear arranged to be engaged with the one-way gear to rotate and formed with a first clutch on a side thereof; and a follower gear formed with a second clutch correspondingly coupled to the first clutch on a side thereof to rotate by being engaged with the lift gear unit.