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
1993-12-07
Martin, Roland
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
4301066, 430110, 430111, G03G 9087, G03G 909, G03G 9097
Patent
active
052682480
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 below 15% of a resin component in a molecular weight region of at most 5000 and at least 5 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 5.times.10.sup.6. The THF-soluble resin component in the molecular weight region of at least 5.times.10.sup.6 is extremely enriched during a melt-kneading step during the toner production, so as to effectively prevent toner flowout from a member for cleaning a fixing roller.
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Patent Abstracts of Japan, vol. 14, No. 415 (P-1102) [4358] Sep. 7, 1990.
Akashi Yasutaka
Hagiwara Kazuyoshi
Joh Yoshinobu
Tanikawa Hirohide
Taya Masaaki
Canon Kabushiki Kaisha
Martin Roland
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