| 摘要 |
PROBLEM TO BE SOLVED: To prevent damaging by external force acting when installing a sheet cassette, in a mechanism for preventing sheets of the number exceeding an upper limit from being inserted into the sheet cassette. SOLUTION: This image forming apparatus includes a pair of side guides for positioning the lateral direction of the sheets stacked and stored in the sheet cassette. One side guide 47R is provided with a regulating member 53 displaced to a regulating position or a retreat position in response to the rotational movement. When the regulating member 53 is displaced to the regulating position, since a claw part 63 projects to the left side more than a sheet abutting surface 73, the sheet can be prevented from being stacked up to an upper part than the claw part 63. The regulating member 53 is displaced to the retreat position from the regulating position by interlocking with a pressing plate 43 lifting when forming an image, and since the claw part 63 is retracted to the right side more than the sheet abutting surface 73, the sheet is not nipped between the claw part 63 and the pressing plate 43. COPYRIGHT: (C)2011,JPO&INPIT
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