| 摘要 |
PROBLEM TO BE SOLVED: To mount and demount a sheet feed unit with respect to a device body by the simple operation by mounting a feed-out means on the sheet feed unit demountable to a device body, and preventing a door from being closed on a normal closing position when the door and the sheet feed unit are not located on the normal positions. SOLUTION: When a feed-out means (sheet feed unit) 200A is drawn out from an image forming device body, a blocking member 103 is energized by a spring SP to be located at a position where it is extremely rotated in the anticlockwise direction. The blocking member 103 is also located on a position where it is extremetely rotated in the antilockwise direction even in a state that the sheet feed unit 200A is demounted. When a door 220A is to be closed, a projection 221A of the door 220A is collided with a rising part 105 of the blocking member 103 of which the anticlockwise rotation is inhibited by a frame 100A, which prevents the door 220A from being closed. That is, when the sheet feed unit 200A is not mounted on a normal position, and displaced from the normal position, the blocking member 103 is anticlockwisely rotated by the energization force of the spring SP, which prevents the closing of the door 200A. |
