| 摘要 |
PROBLEM TO BE SOLVED: To provide a sheet detecting device capable of reliably detecting a sheet with correct timing without damaging the sheet, and to provide an image forming apparatus having the sheet detecting device. ! SOLUTION: When a sheet contact part 102a rotates between a standby position and a retreat position, until a light shielding member 101 is regulated at a first position or a second position, the light shielding member 101 is rotated between the first position and the second position integrally with a shaft part 102c by friction engagement between a light shielding part 101a and a friction plate 103. In a state where the light shielding member 101 is regulated at the first position or the second position, the further rotation of the shaft part 102c is allowed by the slide of the light shielding part 101a and the friction plate 103. Thus, in conjunction with the rotation of the sheet contact part 102a between the standby position and the retreat position, the light shielding member 101 rota |
