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ELECTROPHOTOGRAPHIC IMAGING AND RECORDING MEMBER

IP.com Disclosure Number: IPCOM000023294D
Original Publication Date: 1977-Jun-30
Included in the Prior Art Database: 2004-Mar-29
Document File: 2 page(s) / 307K

Publishing Venue

Xerox Disclosure Journal

Abstract

Photodimerization of anthracene containing polymers causes a change in the photoconductivity of these materials. This property can be exploited to provide an imaging system or an information storage system. In operation a film of an anthra-cene containing polymer is deposited on a layer of a charge carrier generating material such as, for example, selenium and exposed to activating radiation, In the light-struck areas the anthracene groups are dimerized while in the dark areas they remain the same. Hence, the anthracene-group containing polymer in the dark areas retains its photoconductivity where-as the anthracene groups in the irradiated areas are converted to nonconductive dimers, The film is then corona charged and exposed uniformly to weak diffused light. In those areas which still include anthracene groups the charge carriers are transported through the film while in the areas where dimeri-zation took place, the charge stays on the surface. The electrostatic latent image is then developed with toner and transferred to a receiver member. Alternatively, the film on the charge carrier generating material can be imagewise exposed after being corona charged such that two visible images are obtained,

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XEROX DISCLOSURE JOURNAL

ELECTROPHOTOGRAPHIC IMAGING AND Proposed Classification
RECORDINGMEMBER U.S. Cl. 96/1.5
Jan Bares - mt. Cl. G03g 5/04
Milan Stolka

Photodimerization of anthracene containing polymers causes a
change in the photoconductivity of these materials. This
property can be exploited to provide an imaging system or an
information storage system. In operation a film of an anthra-~
cene containing polymer is deposited on a layer of a charge
carrier generating material such as, for example, selenium and
exposed to activating radiation, In the light-struck areas
the anthracene groups are dimerized while in the dark areas
they remain the same. Hence, the anthracene~group containing
polymer in the dark areas retains its photoconductivity where~
as the anthracene groups in the irradiated areas are converted
to nonconductive dimers, The film is then corona charged and
exposed uniformly to weak diffused light. In those areas
which still include anthracene groups the charge carriers are
transported through the film while in the areas where dimeri~
zation took place, the charge stays on the surface. The
electrostatic latent image is then developed with toner and
transferred to a receiver member. Alternatively, the film on
the charge carrier generating material can be imagewise
exposed after being corona charged such that two visible
images are obtained,

Volume 2 Number 3 May/June 1977

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