Encapsulated toner having improved image-forming characteristics

Details Encapsulated toner having improved image-forming characteristics Encapsulated toner having improved image-forming characteristics

1984-12-14

1986-09-09

Kittle, John E.

Radiation imagery chemistry: process, composition, or product th

Microcapsule, process, composition, or product

427222, 42721336, 42840224, 430109, 430546, 430631, 430634, 430636, G03G 908, G03C 108, G03C 110

Patent

active

046109455

ABSTRACT:
An encapsulated toner for use in electrostatography which comprises a shell and a core material comprising a colorant, a binder and a surface active polymer containing at least 5 mol % of a unit having the formula (I): ##STR1## wherein R is an aliphatic hydrocarbon group having 4 to 22 carbon atoms, A is a divalent aliphatic group having 1 to 50 carbon atoms, B is --O-- or NH--, M is a cation or a cationic radical capable of forming a salt with a sulfonic acid, and m and n are independently 0 or 1. A process for preparing the encapsulated toner which comprises forming a shell around a core material comprising a colorant and a binder in an aqueous medium, characterized in that said core material contains a surface active polymer containing at least 5 mol % of a unit having the above formula (I).

REFERENCES:
patent: 3429827 (1969-02-01), Russ
patent: 3694359 (1972-07-01), Merill et al.
patent: 3740334 (1973-06-01), Jacknow et al.
patent: 3887377 (1975-06-01), Yamamoto et al.
patent: 4198478 (1980-04-01), Yoneyama et al.
patent: 4307169 (1981-12-01), Matkan
patent: 4410624 (1983-10-01), Plaschnick et al.

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