| 摘要 |
PROBLEM TO BE SOLVED: To reduce irregular rotation with a durable constitution, and to form highly accurate and highly minute image by making rotary resistive means assembled for imparting resistance through liquid corresponding to a rotary shaft of a gear wheel at least, one of bearings severally supporting the shaft of the gear wheel in freely rotationally. SOLUTION: This image forming device is, assembled with the rotary resistive means 1 for imparting resistance through liquid to the rotary shaft of the gear at least one of bearings severally supporting respective rotary shaft of gear in freely rotationally constituting a photoreceptor driving system as a counter measure corresponding to the pitch unevenness. Namely, a rotary resistive member (rotary resistive means) 1 is assembled with the bearing 2 at the last stage of the photosensitive drum gear 56 among gears constituting the rotary driving system. As the structure like the rotary resistive member 1, an oil damper structure is suitable which is excellent in diminishing property of vibration. In such a way, solid bodies are almost restrained from butting to each other, in the bearing 2 assembling the rotary resistive member 1, since the engaging impact and once engaging vibration of gears becoming a cause of the rotary unevenness are controlled through the oil. |
