Claims
- 1. An imaging member comprising at least one photosensitive layer and an overcoat layer formed from a solution having a surface roughness defined by asperities formed by circulation patterns formed in the layer during drying, wherein said surface roughness comprises a lateral roughness of between about 1 micrometer and about 200 micrometers, and a vertical roughness less than or equal to about 1 micrometer.
- 2. The imaging member of claim 1, wherein said surface roughness comprises a lateral roughness of about 50 micrometers to about 150 micrometers and a vertical roughness of about 0.1 micrometer to about 0.3 micrometer.
- 3. The imaging member of claim 2, wherein said surface roughness is accompanied by a fine scale roughness comprised of a lateral roughness of about 1 micrometer to about 10 micrometers and a vertical roughness of about 0.2 micrometer to about 0.3 micrometer.
- 4. The imaging member of claim 1, wherein said surface roughness comprises a lateral roughness of about 5.0 micrometers to about 100.0 micrometers and a vertical roughness of about 0.2 micrometer to about 0.5 micrometer.
- 5. The imaging member of claim 1, wherein said overcoat layer comprises a charge transport compound which is a triaryl amine having hydroxy functionalities.
- 6. The imaging member of claim 1, wherein said overcoat layer comprises silicone.
- 7. The imaging member of claim 1, wherein said overcoat layer comprises an electron donor compound.
- 8. The imaging member of claim 1, comprising a supporting substrate, a conductive layer, a blocking layer, an adhesive layer, a charge generating layer, a charge transport layer, and said overcoat layer.
- 9. The imaging member of claim 1, wherein said overcoat layer comprises a charge transport compound and a binder which are bonded through hydrogen bonds.
- 10. An imaging member comprising a non-continuous overcoat layer, formed from a polymer solution, having a surface roughness defined by hemispheric dots of the layer formed during drying.
- 11. The imaging member of claim 10, wherein the surface roughness is comprised of a lateral roughness of about 5.0 to about 10.0 micrometers and a vertical roughness of about 0.2 to about 0.5 micrometer.
- 12. The imaging member of claim 10, wherein the dots are present in a concentration of about 10,000 to about 40,000 dots per square millimeter.
- 13. An imaging system, comprising:
- an imaging member comprising an overcoat layer having a surface roughness defined by a vertical roughness less than or equal to about 1 micrometer and a lateral roughness of about 1 to about 200 micrometers; and
- a blade contacting said overcoat layer.
- 14. The system of claim 13, further comprising a raster output scanner.
- 15. The system of claim 13, wherein the vertical roughness is about 0.1 micrometer to about 0.3 micrometer and the lateral roughness is about 50 micrometers to about micrometers.
- 16. The system of claim 13, wherein the vertical roughness is about 0.2 micrometer to about 0.5 micrometer and the lateral roughness is about 5.0 micrometers to about 100.0 micrometers.
- 17. An imaging system, comprising:
- an imaging member comprising an overcoat layer having a surface roughness defined by a vertical roughness of about 0.2 to about 0.5 micrometer and a lateral roughness of about 5.0 to about 100.0 micrometers; and
- a raster output scanner.
- 18. A method for fabricating an overcoat layer for an imaging member, comprising:
- applying a coating solution to a surface of said imaging member to form an overcoat film; and
- drying the overcoat film under such conditions that circulation patterns are formed in and become frozen into a surface of the result in dry overcoat layer.
- 19. The method of claim 18, wherein said drying is carried out at about 65.degree.-70.degree. F. and relative humidity of about 30 to about 40%.
- 20. The method of claim 18, wherein said drying is performed such that a surface roughness of the overcoat layer comprises a lateral roughness of about 1 micrometer to about 200 micrometers and a vertical roughness less than about 1.0 micrometer.
- 21. The method of claim 18, wherein said drying is performed such that a surface roughness of the overcoat layer comprises a lateral roughness of about 50 micrometers to about 150 micrometers and a vertical roughness of about 0.1 micrometer to about 0.3 micrometer.
- 22. The method of claim 21, wherein said surface roughness is accompanied by a fine scale roughness comprised of a lateral roughness of about 1 micrometer to about 10 micrometers and a vertical roughness of about 0.2 micrometer to about 0.3 micrometer.
- 23. The method of claim 18, wherein said drying is performed such that a surface roughness of the overcoat layer comprises a lateral roughness of about 5.0 to about 100.0 micrometers and a vertical roughness of about 0.2 to about 0.5 micrometer.
- 24. The method of claim 18, wherein said coating solution comprises a film forming binder, a charge transport compound, and a solvent.
- 25. The method of claim 24, wherein said charge transport compound is a triaryl amine.
- 26. A method of electrophotographic imaging, comprising:
- scanning a photoreceptor having a textured surface with a raster output scanner to form a latent image on the photoreceptor, said textured surface acting as an anti-reflection layer of light from the raster output scanner;
- applying toner particles to the latent image to develop the image;
- transferring the developed image to a support member; and
- fixing the transferred image on the support member;
- wherein the textured surface has a lateral surface roughness of about 5.0 to about 100.0 micrometers, and a vertical roughness of about 0.2 to about 0.5 micrometer.
- 27. The method of claim 26, wherein said textured surface comprises a charge transport compound which is a triaryl amine having hydroxy functionalities.
- 28. The method of claim 26, wherein said textured surface is non-continuous.
- 29. The method of claim 26, wherein said textured surface is obtained by circulation patterns formed upon drying a solution used to form the textured surface.
Parent Case Info
This is a continuation-in-part application of application Ser. No. 07/560,876, filed Jul. 31, 1990, now abandoned.
US Referenced Citations (27)
Foreign Referenced Citations (3)
Number |
Date |
Country |
53-92133 |
Dec 1978 |
JPX |
57-74744 |
May 1982 |
JPX |
2-108063 |
Apr 1990 |
JPX |
Non-Patent Literature Citations (2)
Entry |
M. G. Velarde et al., "Convection", Scientific American, vol. 234, No. 92, 1980, N.Y., pp. 79-93. |
Grant & Hackh's Chemical Dictionary, 5th Ed. (1987), pp. 89 and 607. |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
560876 |
Jul 1990 |
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