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Preparation of Fine Size Photoconductor Particles

IP.com Disclosure Number: IPCOM000090795D
Original Publication Date: 1969-Jul-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Neiman, RR: AUTHOR [+2]

Abstract

For many purposes, for example, subsequent incorporation in a binder, it is required to have photoconductor material in the form of small size particles. A method of obtaining such material comprises forming the photoconductor material by spraying a solution of photoconductor precursors onto a surface of high lubricity from which the resulting photoconductor can then be removed without undue injury to the photoconductor powder. As an example of the process, an aqueous solution of 0.1M cadmium acetate and 0.1M N,N-dimethylselenourea is sprayed onto a polytetrafluoroethylene surface held at a temperature of 290 degrees F. The resulting cadmium selenide powder is readily scraped off. It is of very small particle size and is photoconductive.

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Preparation of Fine Size Photoconductor Particles

For many purposes, for example, subsequent incorporation in a binder, it is required to have photoconductor material in the form of small size particles. A method of obtaining such material comprises forming the photoconductor material by spraying a solution of photoconductor precursors onto a surface of high lubricity from which the resulting photoconductor can then be removed without undue injury to the photoconductor powder. As an example of the process, an aqueous solution of 0.1M cadmium acetate and 0.1M N,N- dimethylselenourea is sprayed onto a polytetrafluoroethylene surface held at a temperature of 290 degrees F. The resulting cadmium selenide powder is readily scraped off. It is of very small particle size and is photoconductive.

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