| 摘要 |
PROBLEM TO BE SOLVED: To provide an image formation apparatus in which the relative positions of an LED unit and a photoreceptor drum are determined with attachment of a cartridge.SOLUTION: The first peak is generated in the reaction force received by a cartridge 10 when the cartridge 10 presses a pull-up member 111 and a push-up member 121 against the energization force of the pull-up member 111 and the push-up member 121 at the time when the cartridge 10 is inserted to the apparatus body. The second peak is generated in the reaction force received by the cartridge 10 when the cartridge 10 presses an LED unit push-up cam 101 against the energization force of a pressing spring 36 of an LED unit 30 at the time when the cartridge 10 is inserted to the apparatus body. The timing at which the cartridge 10 presses the pull-up member 111 and the push-up member 121 is made different from the timing at which the cartridge presses the LED unit push-up cam 101 at the time of insertion of the cartridge 10.SELECTED DRAWING: Figure 5 |
