Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Migration imaging – process – composition – or product – e.g.,...
Patent
1988-01-04
1989-11-14
Michl, Paul R.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Migration imaging, process, composition, or product, e.g.,...
430 58, G03G 1322
Patent
active
048807150
ABSTRACT:
An imaging system in which an imaging member comprising a substrate and an electrically insulating softenable layer on the substrate, the softenable layer comprising migration marking material located at least at or near the surface of the softenable layer spaced from the substrate, and a charge transport material in the softenable layer is imaged by eletrostatically charging the member, exposing the member to activating radiation in an imagewise pattern, decreasing the resistance to migration of marking material in the softenable layer sufficiently to allow the migration marking material struck by said activating radiation to retain a slight net charge which allows only slight agglomeration, slight coalescence, slight migration in depth of marking material towards said substrate or combination thereof in image configuration during a further decreasing of the resistance to migration towards the substrate in image configuration, and further decreasing the resistance to migration of marking material in the softenable layer sufficiently to allow non-exposed marking material to agglomerate and coalesce substantially. This imaged member may be used as a xeroprinting master in a xeroprinting process comprising uniformly charging the master, uniformly exposing the charged master to activating illumination to form an electrostatic latent image, developing the latent image to form a toner image and transfering the toner image to a receiving member. A charge transport spacing layer comprising a film forming binder and a charge transport compound may be employed between the substrate and the softenable layer in order to increase the surface potential associated with the surface charges of the latent image.
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Gundlach Robert W.
Pundsack Arnold L.
Tam Man C.
Byorick Judith L.
Kondo Peter H.
Lindeman Jeffrey A.
Michl Paul R.
Xerox Corporation
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