| 摘要 |
PROBLEM TO BE SOLVED: To realize the long service life of the function of a device of a copying machine or the like, by blocking or suppressing the powder invasion to the bearing of a rotary member which is used in a powder such as a toner. SOLUTION: The end of the shaft 8 of a rotary member is supported rotatable by a bearing 9, and the ridge line part 53c of the skirt 53b of a V-ring 53 installed to the shaft 8 is slided to the inner surface 9a of the bearing 9. A space 13 expanding in a taper form to the powder side is formed to the bearing 9, and thereby, the practical shaft sliding part is made in the scope of L1. The inlet position P1 of the rotating clearance is separated the distance W1 from the position P2 of a seal sliding part at the opposite side from the powder side. |
