| 摘要 |
PROBLEM TO BE SOLVED: To suppress plastic deformation in the vicinity of positioning concave and convex parts of a regulation member.SOLUTION: A sheet feed tray, which is disposed to be movable with respect to a sheet mounting base 100, includes a regulation member (side guide 200) for regulating sheets. The mounting base 100 includes a positioning concave part 110 disposed at a position corresponding to a sheet size, and a lock concave part 120. The regulation member includes a positioning convex part 210 engaged with the positioning concave part 110, a lock convex part 220 engaged with the lock concave part 120 and configured to regulate the movement of the regulation member during engaging, and an operation part 240 for releasing the engagement of the lock convex part 220 with the lock concave part 120. In a locked state (a) where the lock concave part 120 and the lock convex part 220 are engaged with each other, the positioning convex part 210 is disposed to separate from a bottom wall 101 where the positioning concave part 110 is formed. In a moved state (b) where the engagement of the lock concave part 120 with the lock convex part 220 is released, the positioning convex part 210 can be engaged with the positioning concave part 110. |
