Patent ID: 7753361

Claim:
A paper feeding apparatus comprising: a driving shaft rotatable about an axis and including a first roller and a first gear connected coaxially and fixedly to said first roller; a swing arm unit having a connecting end portion sleeved rotatably on said driving shaft, a free end portion opposite to said connecting end portion, and an intermediate portion interconnecting said connecting end portion and said free end portion; a pickup shaft disposed rotatably on said free end portion of said swing arm unit and parallel to said driving shaft, said pickup shaft including a second roller aligned with said first roller, and a second gear connected coaxially and fixedly to said second roller and aligned with said first gear; and a damping gear disposed between said driving shaft and said pickup shaft and including an idle wheel body that is disposed rotatably on said intermediate portion of said swing arm unit and that meshes with said first and second gears, and a damping member disposed between said idle wheel body and said intermediate portion of said swing arm unit for damping rotation of said idle wheel body relative to said swing arm unit; wherein said swing arm unit includes two side plates each top side, and a top plate interconnecting said top sides of said side plates; wherein one of said side plates is mounted removably to said top plate; and wherein said damping gear further includes a mounting seat disposed fixedly on said one of said side plates, said idle wheel body being disposed rotatably on said mounting seat, said damping member being configured as a high-viscosity oil and disposed between said idle wheel body and said mounting seat.