Method of providing an electrophotographic coating and compositions for the method
AssigneeRank Xerox Ltd.
InventorsHajime Miyatsuka, Satoru Honjo, Kenichi Sawada, Takashi Saida
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Abstract
A method of forming an electrophotographic coating which includes preparing a mixture which comprises finely divided photoconductive material dispersed in an organic resin binder. The resin, which exhibits an acid value of at least 3, or a hydroxyl value of at least 15, is heat-treated for a time and temperature enclosed within the area ABCDEFGH of the temperature-treating diagram shown in the accompanying drawing. Following this treatment, the mixture is dissolved in a volatile solvent for the binder resin, and the dispersion is coated onto a conductive backing to form a substantially uniform layer.
Claims4
A method of forming an electrophotographic article comprising:
- preparing a mixture which comprises finely divided photoconductive material dispersed in an organic resin binder, said resin having an acid value from about 5 to 40, or a hydroxyl value from about 20 to 150, heat-treating said mixture for a time and temperature enclosed within the areas ABCDEFGH of the temperature-treating diagram shown in the accompanying drawing, followed by dispersing said mixture into a volatile solvent for said binder resin, coating said dispersion on a conductive backing to form a substantially uniform layer, and drying said layer under the conditions enclosed within the areas JKLMN of the drawing.
An electrophotographic article produced by the method of preparing a mixture which comprises finely divided photoconductive material dispersed in an organic resin binder, said resin having an acid value from about 5 to 40, or a hydroxyl value from about 20 to 150, heat-treating said mixture for a time and temperature enclosed within the area ABCDEFGH of the temperature treating diagram shown in the accompanying drawing, followed by dispersing said mixture into a volatile solvent for said binder resin, coating said dispersion on a conductive backing to form a substantially uniform layer, and drying said layer under the conditions enclosed within the areas JKLMN of the drawing.
Dependencies are inferred from the claim text.