| 摘要 |
<p>The pressure roller has a supporting core (21A) and a bush (23A). Between these can be arranged a special bearing (22A) which has shoulders (25A) and a bearing surface (24A) located between them. The bush (23A) consists of elastomer; to draw it on, it is expanded and then sits in the expanded state on the bearing surface (24A). Projections (40A) with depressions (41A) between them prevent a relative rotation of the bush (23A). Such projections can also be provided on the bearing surface (24A), in which case they either are present alone or cooperate with those on the inside (30A) of the bush. This construction of the pressure roller makes it easier to replace the worn bush (23A). <IMAGE></p> |
