| 摘要 |
PROBLEM TO BE SOLVED: To make an image possible to be developed by preventing the occurrence of density unevenness. SOLUTION: A developing sleeve 10 of this developing device is, coated with a resin layer formed by the spray coating method on a cylindrical sleeve substrate surface. Although the resin coating layer is formed by the spray coating method, the sleeve substrate surface is slightly grounded by the grinding device with excellent accuracy, so as to preliminarily prevent large ripples from being formed in the length direction on the sleeve surface, so that the maximum filter ripple in the length direction satisfies the next formula, W cm<=0.35μm. |
