Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Radiation-sensitive composition or product
Patent
1998-02-18
1999-10-26
Goodrow, John
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Radiation-sensitive composition or product
430133, G03G 5087
Patent
active
059725524
ABSTRACT:
Embodiments of photoconductors and methods of making photoconductors for electrophotography are described, each embodiment comprising a complex between metal oxide phthalocyanine compound(s) and hydroxy compound(s) or amine compound(s). A metal oxide phthalocyanine pigment exhibits extended photoresponse between 850 nm and 1000 nm when it is milled with hydroxy binders or amine binders. The preferred hydroxy or amine binders include a modified poly-vinyl butyral binder unit containing a --CH.sub.2 CH.sub.2 OH unit, a cyclohexanol unit, a --CH.sub.2 CH.sub.2 NH.sub.2 unit, a --CH.sub.2 C.sub.6 H.sub.10 --NH.sub.2 unit, a --CH.sub.2 C.sub.6 H.sub.10 --CH.sub.2 NH.sub.2 unit, a --CH.sub.2 C.sub.6 H.sub.4 --NH.sub.2 unit, or other hydroxy or amine units. Optionally, hydroxy solvents or other hydroxy additives may also be included. Preferably, the pigment is dehydrated or hydroxy-starved before milling with the binder and solvents. The metal oxide phthalocyanine pigments and the hydroxy or amine groups form a complex which extends the photo-response of an OPC to wavelengths beyond about 850 nm, in order to achieve higher xerographic speed with higher resolution.
REFERENCES:
patent: 5536611 (1996-07-01), Arudi et al.
patent: 5750300 (1998-05-01), Nguyen
Ganapathiappan Sivapackia
Nguyen Khe C.
Goodrow John
Hewlett--Packard Company
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