Patent ID: 8585041

Claim:
A recording medium supplying device, comprising: a recording medium mounting portion on which sheet-like recording media are capable of being mounted in a stacked state; an air discharging unit that blows air to the recording media in the stacked state so as to make recording medium at an uppermost position float; a conveying unit that adsorbs and conveys the floating recording medium at the uppermost position; an upper surface position detecting unit that makes contact with an uppermost surface of the recording media in the stacked state and detects a height position of the uppermost surface, the upper surface position detecting unit includes: an actuator that is supported on a supporting member arranged above the recording medium mounting portion in a rotationally movable manner, a pressing member that is attached to a tip of the actuator and makes contact with the uppermost surface of the recording media, and a biasing unit that biases the tip of the actuator to the lower side; and a pressing force varying mechanism that makes a pressing force of the upper surface position detecting unit on the uppermost surface of the recording media variable, wherein the biasing unit includes an elastic member, and one end of the elastic member is supported on the supporting member through the pressing force varying mechanism and the other end of the elastic member is coupled to the actuator, the elastic member is formed by a spring, and the pressing force varying mechanism includes: an operating lever that extends in a width direction of the supporting member, one end of the operating lever being coupled to the spring and the other end forming an operating unit at an access side of the supporting member; a supporting portion that supports an intermediate portion of the operating lever on the supporting member in a rotationally movable manner, and a locking mechanism that locks the operating lever at a set rotational movement position.