Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Process of making radiation-sensitive product
Patent
1994-06-06
1995-09-12
Goodrow, John
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Process of making radiation-sensitive product
430135, G03G 506
Patent
active
054495822
ABSTRACT:
A process for preparing ultrafine pigment dispersions comprising providing a solubilized mixture of pigment-Lewis acid complex and an aprotic organic solvent; precipitating the resulting solubilized complex into a protic solvent thereby forming a dispersion of ultrafine pigment particles; removing the aprotic and protic solvents to afford a wet cake containing finely divided pigment particles; optionally neutralizing and washing the wet cake particles; and redispersing the resulting ultrafine pigment particles in an aqueous solution, an organic solvent, or mixtures thereof, and a binder resin to form an ultrafine pigment and binder resin dispersion.
REFERENCES:
patent: 5131776 (1992-07-01), Mott
patent: 5238766 (1993-08-01), Molaire et al.
patent: 5334478 (1994-08-01), Desilets et al.
European Publication No. 0 555 950 A1; Mark Holbrook; Dispersion; Filed Apr. 1, 1993.
Harmer Paul A.
Hsieh Bing R.
Melnyk Andrew R.
Taylor Jerry H.
Goodrow John
Haack John L.
Xerox Corporation
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