| 摘要 |
PURPOSE:To reduce an entire developing device in size and to prevent stains due to abrasion by bringing to a blade made of polyethylene terephthalate into contact with both ends of a developing sleeve. CONSTITUTION:A magnetic brush reaches a developing zone A opposite to an image bearing body 1 as a developing sleeve 6 rotates, and development is carried out in contact or out of contact between the brush and the body 1. After the development, a developer is scraped down into a developer storing vessel 3 with a scraper 9. The blade 15 made of polyethylene terephthalate is located in contact with both ends of the sleeve 6 in its axial direction and outward from both ends of a copying paper to be brought into contact with the body 1, and removes the unnecessary developer. |
