| 摘要 |
PROBLEM TO BE SOLVED: To provide a dip coating method which prevents the occurrence of film sagging (a thin film part generated at a coated upper end part) at a coating starting end to form a coating film of uniform thickness on a base material to be coated. SOLUTION: In the dip coating method, a drum as a cylindrical base body is dipped in a coating liquid in a coating tank, and then a coating body to be coated is raised from the coating liquid to form a coating film on the base body to be coated. In this case, a raising speed of the upper end part of the drum decreases as a drum-raising distance increases. As a speed-decreasing mode, it is preferable that the raising speed acceleratively decreases according to an exponential function. Further, when an speed-decreasing operation is finished, a process transits to the raising of the lower part of the drum except its upper part, and in this process, the drum-raising speed is kept to be constant. Accordingly, an electrophotograpy photoreceptor, whose film thickness is uniform over the whole length of the drum, can be manufactured. COPYRIGHT: (C)2008,JPO&INPIT
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