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US 8,518,615 B2Granted
Method of drying organic pigment, method of processing phthalocyanine pigment, and method of manufacturing electrophotographic photosensitive member
AssigneeCanon Kabushiki Kaisha
InventorMasato Tanaka
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Abstract
A method of drying an organic pigment is provided which includes an under-depressurization microwave drying step of irradiating the organic pigment with microwaves under depressurization and drying the organic pigment. A method of processing a phthalocyanine pigment and a method of manufacturing an electrophotographic photosensitive member are also provided each of which utilizes the drying method.
Claims12
A method of drying an organic pigment, the method comprising the steps of:
- (i) filtrating dispersion liquid of the organic pigment to obtain the organic pigment containing water or organic solvent;
- and then
- (ii) irradiating the organic pigment containing water or organic solvent with microwaves under depressurization to dry the organic pigment.
Dependencies are inferred from the claim text.