| 摘要 |
This invention relates to shutter to be used in a process cartridge detachably mountable to the electrophotographic image forming apparatus and protects an electrophotographic photosensitive drum provided in the process cartridge. The shutter includes (a) a protective portion mounted on the photosensitive drum along the longitudinal direction thereof for protecting the photosensitive drum, when the shutter is mounted on the process cartridge, (b) outward protruding portions provided at one end and the other end of the protective portion in the longitudinal direction thereof so as to protrude from the surface thereof positioned outside when the shutter is mounted on the process cartridge, the outward protruding portions being positioned outside an image forming area of the photosensitive drum in the longitudinal direction of the protective portion, and (c) inward protruding portions provided at one end and the other end of the protective portion in the longitudinal direction thereof so as to protrude from the surface thereof positioned inside when the shutter is mounted on the process cartridge.
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