Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1994-08-17
1996-11-05
Dote, Janis L.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
430111, 430137, 430138, 430904, G03G 9093
Patent
active
055716520
ABSTRACT:
The encapsulated toner for heat-and-pressure fixing which includes a heat-fusible core material containing at least a thermoplastic resin and a coloring agent, and a shell formed thereon so as to cover the surface of the core material is produced by a process having the step of carrying out in situ polymerization using a thermoplastic resin as a main component of the shell to form a shell having a structure in which a part of the heat-fusible core material is incorporated therein, the thermoplastic resin having a mechanical loss tangent (tan .delta.) in the range of from 1.0 to 20.0 based on a dynamic viscoelasticity, when measured with a sine stress having an angular frequency of 25 rad/s at a temperature of from 80.degree. to 120.degree. C. By using the encapsulated toner, good offset resistance can be obtained in the resulting toner even when its fixing speed is slow. Also, the core material is likely to be released from the encapsulated toner upon fixing while retaining good blocking resistance and good shocking resistance.
REFERENCES:
patent: 2297691 (1942-10-01), Carlson
patent: 2357809 (1944-09-01), Carlson
patent: 3269626 (1966-08-01), Albrecht
patent: 5225308 (1993-07-01), Sasaki et al.
patent: 5428435 (1995-06-01), Yasuda et al.
Patent Abstracts of Japan, vol. 12, No. 25 (P-659) [2872] (Jan. 26, 1988), of JP 62-178269 (Pub Aug. 1987).
English Abstract of JP 48-075032 corresponds to U.S. Patent No. 3,788, 994. (Pub Oct. 1973).
English Abstract of JP 82000493 (Pub Jan. 1982).
English Abstract of JP 50044836 (Pub Apr. 1975).
English Abstract of JP 57037353 (Pub Mar. 1982).
English Abstract of JP 48075033 (Pub Oct. 1973).
English Abstract of JP 61056352 (Pub Mar. 1986).
English Abstract of JP 58205163 (Pub Nov. 1983).
English Abstract of JP 58205162 (Pub Nov. 1983).
English Abstract of JP 63128357 (Pub May 1988).
English Abstract of JP 63128358 (Pub May 1988).
English Abstract of JP 63128359 (Pub May 1988).
English Abstract of 63128360 (Pub May 1988).
English Abstract of 63128361 (Pub May 1988).
English Abstract of 63128362 (Pub May 1988).
English Abstract of 6130713 (Pub May 1994).
Asano Tetsuya
Kawabe Kuniyasu
Sasaki Mitsuhiro
Yamaguchi Takashi
Dote Janis L.
Kao Corporation
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