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Thermoplastic Recording Technique

IP.com Disclosure Number: IPCOM000090652D
Original Publication Date: 1969-Jun-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Alspaugh, GR: AUTHOR

Abstract

Deformation type images corresponding to images on original documents are formed on thermoplastic strip 10. The latter is unwound from supply roll 11 and moves in synchronism with a drum past a number of processing stations to take-up roll 12. The drum comprises a layer of photoconductive material 13 which is deposited on a grounded conductive substrate. The portion of strip 10 in contact with the drum provides an insulating layer of appreciable thickness in intimate physical contact with the photoconductive layer. The processing stations include initial charging station 14 where charges of a one polarity are deposited on strip 10 by corona unit 15 while the assembled element is subjected to overall uniform illumination from lamp 16.

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Thermoplastic Recording Technique

Deformation type images corresponding to images on original documents are formed on thermoplastic strip 10. The latter is unwound from supply roll 11 and moves in synchronism with a drum past a number of processing stations to take-up roll 12. The drum comprises a layer of photoconductive material 13 which is deposited on a grounded conductive substrate. The portion of strip 10 in contact with the drum provides an insulating layer of appreciable thickness in intimate physical contact with the photoconductive layer. The processing stations include initial charging station 14 where charges of a one polarity are deposited on strip 10 by corona unit 15 while the assembled element is subjected to overall uniform illumination from lamp 16. The next station is an exposure station in which the line image of an original 17 is projected via lens 18 through corona unit 19 which simultaneously deposits a charge on strip 10 of the opposite polarity. Then the assembled element is subjected to uniform overall illumination by light 20. Strip 10 having the latent electrostatic image on it, is removed from the drum and heated by heater 21 to develop the deformation image before being wound on take-up roll 12.

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