Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1991-11-26
1994-08-16
Goodrow, John
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
430109, 430137, G03G 9087
Patent
active
053386388
ABSTRACT:
A toner for developing an electrostatic image is provided as a pulverized mixture including a binder resin and a colorant. The binder resin is characterized by a molecular weight distribution on a GPC chromatogram of its tetrahydrofuran (THF)-soluble resin content including at least 15% and below 35% of a resin component in a molecular weight region of at most 5000 and at least 3 wt. % of a resin component in a molecular weight region of at least 5.times.10.sup.6 and showing a main peak in a molecular weight region of 5000 to 10.sup.5. The binder resin also has an acid value of 2-100 mg KOH/g. The THF-soluble resin component in the molecular weight region of at least 5.times.10.sup.6 is enriched during a melt-kneading step during the toner production.
REFERENCES:
patent: 2297691 (1942-10-01), Carlson
patent: 3666363 (1972-05-01), Tanaka et al.
patent: 4071361 (1978-01-01), Marushima
patent: 4702986 (1987-10-01), Imai et al.
patent: 4939060 (1990-07-01), Tomiyama et al.
patent: 5077168 (1991-12-01), Ogami et al.
patent: 5084368 (1992-01-01), Hirayama et al.
patent: 5156937 (1992-10-01), Alexandrovich et al.
patent: 5180649 (1993-01-01), Kukimoto et al.
Patent Abstracts of Japan, vol. 14, No. 415 (P-1102)[4358], Sep. 7, 1990 for JPA-02161464.
Kato Masayoshi
Kukimoto Tsutomu
Tomiyama Koichi
Tsuchiya Kiyoko
Yusa Hiroshi
Canon Kabushiki Kaisha
Goodrow John
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