Elastic roller and method of grinding the same
When an elastic layer surface having an unapplied area of adhesive agent at its one end is ground, a method of grinding an elastic roller which assures high run-out accuracy and uniform diameter as well as which can carry out surface grinding with good production efficiency is provided. An elastic roller comprises an elastic layer 1 carried on the outer circumference of a shaft 2 via adhesive agent, and an unapplied area of adhesive agent at one end of the elastic layer in the longitudinal direction of the roller. The surface of the elastic layer is ground by a grindstone 10 moving along the longitudinal direction of the roller. The elastic layer has no taper at the both ends, and grinding carried out by the grindstone is started from an opposite end side of the end having the unapplied area of adhesive agent of the roller in the longitudinal direction.
1. A method of grinding an elastic roller which has an elastic layer carried on the outer circumference of a shaft via an adhesive agent, and an unapplied area of adhesive agent at only one end in the longitudinal direction of the roller of said elastic layer, in which the outer circumference of said elastic layer is ground by a grindstone moving along the longitudinal direction of the roller, wherein grinding by said grindstone is started from an opposite end side of the end having the unapplied area of adhesive agent in the longitudinal direction of the roller,
wherein when grinding by reciprocating said grindstone at least once along the longitudinal direction of the roller, reversing said grindstone, with said grindstone and the end having the unapplied area of adhesive agent of said elastic layer in contact with each other along the longitudinal direction of the roller.
2. The method of grinding the elastic roller according to claim 1 , wherein said elastic layer is a polyurethane foam roller comprising polyurethane foam.
3. The method of grinding the elastic roller according to claim 1 , the unapplied area of said adhesive agent is within a range of 5 to 10 mm from the end of said elastic layer.