Electrophotographic photoconductor, and process cartridge and electrophotographic apparatus using the same
First Claim
Patent Images
1. An electrophotographic photoconductor comprising:
- an electroconductive support and a photoconductive layer thereon; and
an outermost layer of the photoconductive layer comprising particles;
wherein a surface of the particles comprises;
a) a polyorganosiloxane-containing phase which contains polyorganosiloxane; and
b) an organic polymer-containing phase which contains organic polymer without silicone or having polyorganosiloxane content less than the polyorganosiloxane-containing phase.
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Abstract
An electrophotographic photoconductor comprising at least an electroconductive support and a photoconductive layer which is formed on said electroconductive support, the outermost layer of the photoconductor contains particles comprising a polyorganosiloxane-containing phase which contains polyorganosiloxane and an organic polymer-containing phase which contains organic polymer without silicon and has a polyorganosiloxane content which is less than the polyorganosiloxane-containing phase, each phase being exposed at the top surface of the photoconductor.
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Citations
23 Claims
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1. An electrophotographic photoconductor comprising:
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an electroconductive support and a photoconductive layer thereon; and
an outermost layer of the photoconductive layer comprising particles;
wherein a surface of the particles comprises;
a) a polyorganosiloxane-containing phase which contains polyorganosiloxane; and
b) an organic polymer-containing phase which contains organic polymer without silicone or having polyorganosiloxane content less than the polyorganosiloxane-containing phase. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An electrophotographic photoconductor comprising:
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an electroconductive support and a photoconductive layer thereon;
wherein an outermost layer of the photoconductor comprises an organically modified polyorganosiloxane graft copolymer comprising;
a) a main chain of a polyorganosiloxane; and
b) a graft chain of an organic polymer without containing silicon. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A process cartridge comprising an electrophotographic photoconductor which comprises:
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an electroconductive support and a photoconductive layer thereon; and
an outermost layer of the photoconductive layer comprising particles;
wherein a surface of the particles comprises;
a) a polyorganosiloxane-containing phase which contains polyorganosiloxane; and
b) an organic polymer-containing phase which contains organic polymer without silicone or having polyorganosiloxane content less than the polyorganosiloxane-containing phase.
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21. An electrophotographic device comprising:
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an electrophotographic photoconductor;
a charging unit configured to charge a latent image carrier;
a light irradiating unit configured to irradiate light imagewisely onto the latent image carrier so as to form a latent electrostatic image theron;
an image developing unit configured to develop the latent electrostatic image to a developed image; and
a transferring unit configured to transfer the developed image to a recording medium;
wherein the electrophotographic photoconductor comprises;
an electroconductive support and a photoconductive layer thereon; and
an outermost layer of the photoconductive layer comprising particles;
wherein a surface of the particles comprises;
a) a polyorganosiloxane-containing phase which contains polyorganosiloxane; and
b) an organic polymer-containing phase which contains organic polymer without silicone or having polyorganosiloxane content less than the polyorganosiloxane-containing phase.
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22. A process cartridge comprising an electrophotographic photoconductor which comprises:
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an electroconductive support and a photoconductive layer thereon;
an outermost layer of the photoconductive layer comprising particles;
wherein a surface of the particles comprises;
a) a polyorganosiloxane-containing phase which contains polyorganosiloxane; and
b) an organic polymer-containing phase which contains organic polymer without silicone or having polyorganosiloxane content less than the polyorganosiloxane-containing phase.
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23. An electrophotographic device comprising:
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an electrophotographic photoconductor;
a charging unit configured to charge a latent image carrier;
a light irradiating unit configured to irradiate light imagewisely onto the latent image carrier so as to form a latent electrostatic image theron;
an image developing unit configured to develop the latent electrostatic image to a developed image; and
a transferring unit configured to transfer the developed image to a recording medium;
wherein the electrophotographic photoconductor comprises;
an electroconductive support; and
a photoconductive layer formed on the electroconductive support;
wherein an outermost layer of the photoconductor comprises an organically modified polyorganosiloxane graft copolymer comprising;
a) a main chain of a polyorganosiloxane; and
b) a graft chain of an organic polymer without containing silicon.
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Specification