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Thermoelectric Photoconductor Materials

IP.com Disclosure Number: IPCOM000095539D
Original Publication Date: 1964-Feb-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Sporer, AH: AUTHOR

Abstract

When a photoconductive material is intimately mixed with a thermoelectric and coated in film form, an electrophotographic material is produced. Thermoelectrics are materials which retain a strong in external field after the simultaneous application of an external field and heat. Some materials retain such fields as long as two years.

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Thermoelectric Photoconductor Materials

When a photoconductive material is intimately mixed with a thermoelectric and coated in film form, an electrophotographic material is produced. Thermoelectrics are materials which retain a strong in external field after the simultaneous application of an external field and heat. Some materials retain such fields as long as two years.

The thermoelectric-photoconductor combination is first precharged in the dark during manufacture as a thermoelectric. When irradiated in an imagewise pattern, the photoconductor in the irradiated area polarizes itself to counteract the internal field environment of the thermoelectric. Therefore, the external field pattern that exists is altered in accordance with the initial imagewise pattern. This pattern can then be made visible by dusting the film with appropriate xerographic toners or by other techniques.

Photovoltaic materials produce the same effect when substituted for the photoconductive materials in the above system.

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