| 摘要 |
PURPOSE:To obtain efficiently the coated film of a photosensitive material having good quality by supplying a coating after dispersion through a filter to a coating tank prior to generation of drying, etc. on the surface of the coating, passing the paint overflowing from the upper part of the coating tank again throuth the filter and supplying cyclically the coating to the coating tank. CONSTITUTION:A sand mill device for dispersing a pigment, a filter for filtration of a coating and a dip coating tank are provided in order to form an electrophotographic sensitive body on a base body by a dip coating method. The paint after the dispersion is passed through a filter and is supplied to the coating tank prior to drying of the coating surface, reflocculation of the pigment, increase in viscosity and gelation. The coating overflowing from the upper part of the coating tank is again passed through the filter and is supplied cyclically to the coating tank. More specifically, the coating 46 fed continuously to the coating tank 44 overflows from the upper part of the tank 44 and is gathered in a receiving tray 45, from which the coating is again returned to a coating tank 40 and is supplied to the tank 44. The base body 30 of an electrophotographic sensitive body is attached to a lifting member 32 and is vertically moved by the rotation of a screw 33. The supply of the coating after dispersion through a filter 17 to the tank 44 and the supply of the overflowing coating again to the tank 44 are thus made possible and the good coated film of the photosensitive material is efficiently obtd. |
