| 摘要 |
PROBLEM TO BE SOLVED: To prevent the spring-out of a cartridge or the like by gradually opening a cover by imparting nearly constant opening operation resistance to the cover until the cover is at least in a half opened state from a closed state. SOLUTION: When a locking means is opened, a film cartridge 2 and a cartridge chamber cover 3 are pressed by the pressing force of an injector spring 4. Thus, the cartridge chamber cover 3 performs opening operation, and sufficient friction for making the cartridge chamber cover 3 gradually perform the opening operation resisting the pressing force of the injector spring 4 is caused at a rubbing part 3b between the hinge part of the cartridge chamber cover 3 and a friction piece 5. Thus, the cartridge chamber cover 3 gradually performs the opening operation from the closed state and give a user confidence and a noble feeling. Also, the film cartridge 2 abuts on a pressing part 3a formed at the inside of the cartridge chamber cover 3, so that the spring-out (falling off) of it is prevented. |
