Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1992-02-03
1994-03-15
McCamish, Marion E.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
430138, 430137, G03G 900, G03G 500, G03C 172
Patent
active
052945138
ABSTRACT:
Encapsulated electrostatographic toner particles and a process for making toner particles. The toner particles comprise a pressure fixable core encapsulated in a pressure rupturable shell with the outer surface of the shell being hydrophobic. Preferably, the outer surface of the shell is rendered hydrophobic by having a thermosetting resin precipitated thereon. The process for producing electrostatographic toner particles comprises preparing a core material, encapsulating a discrete portion of the core material in a shell by interfacial polycondensation, and then treating the outer surfaces of the shells with a thermosetting resin to render them hydrophobic. This enables the particles to be formed as a free-flowing, dry powder without requiring costly spray drying.
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Billmeyer, Fred W., Textbook of Polymer Science, 1984, p. 27.
Mitchell Nancy G.
Wilger Gary R.
Crossan Stephen
McCamish Marion E.
Moore Business Forms Inc.
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