Patent ID: 8528893

Claim:
A paper feeding device, applicable to a multi-function printer, the paper feeding device comprising: a frame; a top cover, disposed on the frame; a set of gear chains, disposed on a side of the frame; a power unit, disposed adjacent to the set of gear chains, and located on the side of the frame together with the set of gear chains; and a set of driving gears, disposed on the top cover, wherein when the top cover is closed relatively to the frame, the set of driving gears interferes with the power unit, and the set of driving gears is engaged with the set of gear chains, and the power unit provides a power to enable the set of driving gears to rotate, so as to drive the set of gear chains, when the top cover is opened relatively to the frame, the set of driving gears releases interference with the power unit and the set of gear chains along with moving of the top cover, and the set of gear chains is at a free rotation status.