| 摘要 |
A film carrying roller comprises an outer annular groove for receiving a film, and an annular recess formed at the central portion of the bottom of the groove. An annular elastic tire has an upper convex surface and fits in the recess. Two annular inclined surfaces form remaining portions of the groove bottom, each of the inclined surfaces ascending from a respective upper annular edge of the recess to a respective outer annular end of the groove bottom. Such ends are positioned higher than the peak of the convex surface of the tire. |
