Browse Prior Art Database

RED AND INFRA-RED SENSITIZATION OF PHOTOCONDUCTORS

IP.com Disclosure Number: IPCOM000025398D
Original Publication Date: 1985-Feb-28
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 80K

Publishing Venue

Xerox Disclosure Journal

Abstract

Photoconductors including (1) inorganic photoconductors, preferably in particulate form, such as trigonal Se doped or undoped with Group IA and Group IIA elements, CdS and CdSe doped or undoped with Group I, 111, V and VII elements, cadmium sulpho-selenide doped or undoped with Group I, 111, V and VII elements, Te, ZnO, Ti0 , Se alloys such as As/Se, Te/Se and mixtures thereof and (2) organic pigments such as metal and metal-free phthalocyanine, pyryllium type dyes of the general structure:

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I XEROX DISCLOSURE JOURNAL

I

Proposed Classification

Int. C1. G03g 5/09

Photoconductors including (1) inorganic photoconductors, preferably in particulate form, such as trigonal Se doped or undoped with Group IA and Group IIA elements, CdS and CdSe doped or undoped with Group I, 111, V and VII elements, cadmium sulpho-selenide doped or undoped with Group I, 111, V and VII elements, Te, ZnO, Ti0 , Se alloys such as As/Se, Te/Se and mixtures thereof and (2) organic pigments such as metal and metal-free phthalocyanine, pyryllium type dyes of the general structure:

RED AND INFRA-RED SENSITIZATION OF PHOTOCONDUCTORS U.S. C1. 430/83 Anthony M. Horgan

2

Polyvinylcarbazole-trinitrofluorenone, squarylium dyes, triphenylmethane, bi- phenyldiamines, and other small molecules or oligomers and mixtures thereof are sensitized to red and infra-red illumination by a class of dyes known as methine, polymethine and cyanine dyes, each of which contains one or more methine (-CFr=) linkages as part of their chromophoric system (see, for example, Venkataraman, Chapter XXXVIII).

The typical cyanine molecule contains up to two nitrogen containing ring systems (though not necessarily so, see mercyanines below) one having tervalent nitrogen and one tetravalent nitrogen; the two nitrogen atoms being linked by a conjugated chain of an uneven number of carbon atoms. In mecrocyanines dyes, instead of end components of nitrogen-containing heterocyclic compounds (see above) one end component co...