Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1995-03-06
1996-09-10
Martin, Roland
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
4301066, 430109, 430110, 430114, 430115, 428372, G03G 909, G03G 9083, G03G 908, D02G 300
Patent
active
055544762
ABSTRACT:
A liquid composition for developing latent electrostatic images comprising toner particles associated with a pigment dispersed in a nonpolar liquid. The salient feature of the invention is that the toner particles are formed with a plurality of fibers or tendrils from a thermoplastic polymer and carry a charge of a polarity opposite to the polarity of the latent electrostatic image. The polymer is insoluble or insolvatable in the dispersant liquid at roam temperature. The toner particles are formed by plasticizing the polymer and pigment at elevated temperature and then either permitting a sponge to form and wet-grinding pieces of the sponge or diluting the plasticized polymer-pigment while cooling and constantly stirring to prevent the forming of a sponge while cool. When cool, the diluted composition will have a concentration of toner particles formed with a plurality of fibers.
REFERENCES:
patent: 4148640 (1979-04-01), Dulmage et al.
patent: 4230650 (1980-10-01), Guignard
patent: 4539256 (1985-09-01), Shipman
patent: 4794651 (1988-12-01), Landa et al.
Ben-Auraham Peretz
Gibson George A.
Hall Joseph
Landa Benzion
Inligo, N.V.
Martin Roland
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