Printing medium feeding apparatus and image forming apparatus using the same

摘要

A feeding apparatus (230) that feeds a printable medium (51) from a cassette (60) having a knock-up plate (61) in which the printable medium (51) is loaded and an elastic member (65) that elastically biases the knock-up plate (61). The apparatus includes a pick-up roller (70) that draws out one printable medium (51) loaded in the knock-up plate (61) while rotating once; a cam member (81) that is installed in the pick-up roller (70) and operates in interlocking with circulation driving of the pick-up roller (70); a lever (85) that separates the knock-up plate (61) from the pick-up roller (70) by interacting with the cam member (81) at the time of transferring the printable medium (51) drawn out by the pick-up roller (70) and; and a transfer roller (75) that transfers the printable medium (51) drawn out by the pick-up roller (70).