Patent ID: 8662496

Claim:
A multi-function printer (MFP), comprising: a body, having a paper conveyor path, a paper holder and a first rotating axle, wherein the paper holder is located in front of an entrance of the paper conveyor path, and the first rotating axle is located in the paper conveyor path; a top cover, disposed on the body, wherein a first side of the top cover is adapted to rotate about the first rotating axle so as to be close to the paper holder of the body, and the top cover has a first stopping point; a paper feed roller, disposed on the top cover; and a stopper, having a second rotating axle, a connecting portion and an eccentric portion, wherein the second rotating axle is connected to the body, the connecting portion is connected between the second rotating axle and the eccentric portion, the eccentric portion has a first end and a second end with the weight of the second end is greater than the weight of the first end wherein the first end is above the second end, the eccentric portion hangs down at the entrance of the paper conveyor path, a center of gravity of the stopper is located in the second end of the eccentric portion, and the first stopping point is located in a rotating path of the eccentric portion, so as to limit the rotation of the eccentric portion; wherein when the first side of the top cover rotates about the first rotating axle so as to be close to the paper holder, the first stopping point moves along with the top cover and releases the limitation to the eccentric portion, the paper feed roller contacts multiple pieces of paper placed in the paper holder and rotates to propel the paper to enter the paper conveyor path via the entrance of the paper conveyor path, and the paper pushes the second end of the eccentric portion that is relatively close to the paper holder, and the eccentric portion is adapted to rotate clockwise about the second rotating axle.