Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Process of making developer composition
Patent
1998-04-13
1999-01-26
Martin, Roland
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Process of making developer composition
G03G 9087
Patent
active
058636986
ABSTRACT:
A process for the preparation of toner comprising mixing a colorant containing a surfactant and a latex emulsion, and wherein the latex emulsion contains resin and a nonionic hydrolyzable surfactant, and wherein said surfactant is of the Formulas (I) or (II), or optionally mixtures thereof ##STR1## wherein R.sup.1 is a hydrophobic aliphatic, or hydrophobic aromatic group; R.sup.2 is selected from the group consisting of hydrogen, alkyl, aryl, alkylaryl, and alkylarylalkyl; R.sup.3 is hydrogen or alkyl; A is a hydrophilic polymer chain, and m represents the number of A segments; heating below about the resin latex glass transition temperature, followed by the addition of an anionic stabilizer, thereafter heating above about the resin glass transition temperature, and adjusting the pH of the resulting mixture of resin and colorant particles suspended in an aqueous phase containing anionic surfactant, cationic surfactant and nonionic hydrolyzable surfactant, wherein said pH is increased from about 1.7 to about 2.5 to about 6 to about 12 by adding a base during the heating above about said resin glass transition temperature wherein coalescence is being accomplished.
REFERENCES:
patent: 3674736 (1972-07-01), Lerman et al.
patent: 4137188 (1979-01-01), Uetake et al.
patent: 4558108 (1985-12-01), Alexandru et al.
patent: 4797339 (1989-01-01), Maruyama et al.
patent: 4983488 (1991-01-01), Tan et al.
patent: 4996127 (1991-02-01), Hasegawa et al.
patent: 5066560 (1991-11-01), Tan et al.
patent: 5278020 (1994-01-01), Grushkin et al.
patent: 5290654 (1994-03-01), Sacripante et al.
patent: 5308734 (1994-05-01), Sacripante et al.
patent: 5344738 (1994-09-01), Kmiecik-Lawrynowicz et al.
patent: 5346797 (1994-09-01), Kmiecik-Lawrynowicz et al.
patent: 5348832 (1994-09-01), Sacripante et al.
patent: 5364729 (1994-11-01), Kmiecik-Lawrynowicz et al.
patent: 5366841 (1994-11-01), Patel et al.
patent: 5370963 (1994-12-01), Patel et al.
patent: 5403693 (1995-04-01), Patel et al.
patent: 5405728 (1995-04-01), Hopper et al.
patent: 5418108 (1995-05-01), Kmiecik-Lawrynowicz et al.
patent: 5496676 (1996-03-01), Croucher et al.
patent: 5501935 (1996-03-01), Patel et al.
patent: 5527658 (1996-06-01), Hopper et al.
patent: 5585215 (1996-12-01), Ong et al.
patent: 5650255 (1997-07-01), Ng et al.
patent: 5650256 (1997-07-01), Veregin et al.
patent: 5766818 (1998-06-01), Smith et al.
Dutoff Beverly C.
Hopper Michael A.
Hu Nan-Xing
Ong Beng S.
Patel Raj D.
Martin Roland
Palazzo E. O.
Xerox Corporation
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