| 摘要 |
A process cartridge includes an image bearing member cartridge and a developing cartridge detachably installed in the image bearing member cartridge. The image bearing member cartridge has a pair of first and second side plates, a latent image bearing member, and a pressure member. The developing cartridge has a pair of third and fourth side plates and a pair of first and second light guides fixed at the third and fourth side plates, respectively. The pressure member presses side surfaces of the first and the second light guides, thereby urging the developing agent bearing member toward the latent image bearing member.
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