Sheet size setting device, sheet feeder and image forming apparatus

摘要

A sheet size setting device includes a first member and a second member. The first member includes a tubular holing portion having a first area and a second area in an axial direction. The second member is assembled with the first member movably in the axial direction of the tubular holding portion and includes a second indicator and a second detectable portion. A movement of the second member in the axial direction is restricted by a restricting portion. The restricting portion restricts the movement of the second member in the axial direction when the tubular holding portion is located at a first rotational position and permits the movement of the second member in the axis direction, thereby causing the second indicator to reach the first area and the second detectable portion to reach the second area, when the tubular holding portion is located at a second rotational position.