Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Process of making radiation-sensitive product
Patent
1979-08-09
1981-08-25
Martin, Jr., Roland E.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Process of making radiation-sensitive product
430 58, 430 59, 430 72, 430 76, 430135, 430141, 260161, 260172, 260178, G03G 506
Patent
active
042860407
ABSTRACT:
An electrophotographic element that comprises an electrically conductive support and a photoconductive layer containing a photosensitive azo-compound dispersed in a film-forming polymeric binder is prepared by synthesizing the photosensitive azo-compound in situ, by reaction between a diazonium compound and an azo-coupling component, in the film-forming polymeric layer on the support. The azo-compounds thus synthetized are distributed in the binder layer in an almost perfectly homogeneous form. Under an electron microscope screen scan they are not distinguishable as separate particles, even at a ten thousand fold magnification. By forming a very thin photoconductive layer in this way and coating it with a charge transporting top layer, especially useful electrophotographic elements are obtained. The invention relates also to electrophotographic elements prepared according to the process.
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Rath, "Konstitution und Synthese der Organischen Farbstoffe" Lehrbuch der Textilchemie, 1952, pp. 280-289.
Johnston Albert C.
Martin Jr. Roland E.
Oce'-Nederland, B.V.
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