| 摘要 |
<p>PURPOSE:To simplify the process, reduce the cost, and avoid the work environment from becoming bad by using a heat shrikage tube of rubber of a larger diameter than the outer diameter of a shaft memorizing a shape of a smaller inner diameter than the shaft diameter for a sheet feed roller. CONSTITUTION:A heat shrinkage tube 12 cut in a required length is engaged with a shaft 11. The shaft 11 and the heat shrikage tube 12 are then left in a high temperature tank of 100 - 200 deg.C for several min., so the heat shrinkage tube 12 is vulcanized completely and shrunk. The heat shrikage tube 12 is shrunk by heat to be tightely applied to the shaft 11, and a rubber layer 13 coats the shaft 11. Both ends of the rubber layer 13 are then cut in a necessary length, and the outer diameter of the rubber layer 13 is polished if necessary to complete a sheet feed roller. The sheet feed roller can thus be manufactured without using binding agent or dies.</p> |
