IMAGE FORMING DEVICE

PURPOSE:To provide an image forming device which can stack the paper sheet having the weak toughness such as thin paper sheet in a favourable manner even if the stack depth is large. CONSTITUTION:When a handle part 24 is positioned at the right edge side of a window 25, an auxiliary guide member 20 is extended to be set along the right side wall of a recessed part 17, and the auxiliary guide member 20 is held at an accommodation position where the recessed part 17 appears. When the handle part 24 is operated to be positioned at the left edge side of the window 25, the auxiliary guide member 20 is bent at the bending parts 21 and 22, and held at the position where the bending part 22 collides with the left side wall of the recessed part 17 or the position covering the recessed part 17 after approach.