Patent ID: 8355646

Claim:
An operations-unit angle adjusting device comprising: an operations unit that is supported by an apparatus main body so as to freely move in a vertical direction; and an adjusting mechanism that changes a vertical angle of the operations unit, wherein the adjusting mechanism has a shaft part that is provided on a side of the apparatus main body and supports the operations unit so as to freely move in the vertical direction, an operating lever that is supported by the operations unit so as to freely move in the vertical direction, the operating lever moving the operations unit in a same direction as the operating lever, and an opening/closing piece that operates simultaneously with vertical movements of the operating lever to perform an opening/closing operation, the opening/closing piece having an engaging part that is engaged with an engaged part provided in the apparatus main body to restrict vertical movements of the operations unit when the opening/closing piece is closed and that is disengaged from the engaged part to allow the vertical movements of the operations unit when the opening/closing piece is opened, wherein the opening/closing piece is supported by the operations unit so as to freely rotatably move in a lateral direction at an intermediate part and urged in a closing direction by an elastic member at all times, and the operating lever includes a cam part with a symmetrically shaped notch that engages with an actuation part provided at a frontpart of the opening/closing piece, the actuation part being slid along the symmetrically shaped notch in the cam part to rotatably move the opening/closing piece in an opening/closing direction when the operating lever is moved vertically.