| 摘要 |
PURPOSE:To enable even contact pressure to be maintained over the entire length of the roller handling liquid such as developing solution or the like of an image forming device by forming said roller from the elastic foam layer and liquid permeable cylindrical body disposed on a substrate and covering the end faces of the elastic foam layer with the cylindrical bodies. CONSTITUTION:An elastic foam layer 3 composed of foamed polyurethane or the like is provided around a rigid shaft 2 having a supporting function and a flexible cylindrical body 4 having liquid permeability composed of fibers or the like is covered this layer 3. The above-mentioned cylindrical body 4 is supported on the layer 3 by the elastic deformation restoring force of the layer 3. The cylindrical body 4 extends beyond the end part 3a of the layer 3 and goes along the lateral end faces composed of the shaft 2 and layer 3 to enclose these, thence the excess portions are folded into the space 2a formed between the shaft 2 and the roller revolving shaft 7 to which said shaft 2 is mounted. As a result, the end parts of the cylindrical body 4 are closely contacted and fixed to the roller side end faces and therefore the production of crease in the cylindrical body 4 and undesirable deformations such as waving, twisting, etc. is obviated. |
