G - Physics – 03 – G
Patent
G - Physics
03
G
G03G 9/097 (2006.01) G03G 9/107 (2006.01) G03G 15/09 (2006.01)
Patent
CA 2375255
Disclosed are developer compositions for use in an electrographic development process and methods for using such compositions. The developer includes a hard magnetic material as a carrier, and also a toner material which comprises a polymeric resin, colorant, and a hydrophilic silica or hydrophilic silica, in an amount sufficient to reduce the dusting of toner particles off of the carrier particles during use, as well as to maintain the charge to mass ratio of the toner during use so as to increase the useful life of the developer composition. Also disclosed are methods of using such developer compositions.
L'invention concerne des compositions de révélateur destinées à être utilisées dans un processus de développement électrographique et des procédés destinés à l'utilisation de ces compositions. Ce révélateur comprend un matériau magnétique à aimantation permanente comme support, et également une solution de toner comprenant une résine polymère, un colorant, et de la silice hydrophobe ou hydrophile, en quantité suffisante pour réduire le dépoussiérage de particules de support durant l'utilisation, ainsi que pour maintenir le rapport charge/masse du toner durant l'utilisation de façon à augmenter la durée de vie utile de la composition de révélateur. L'invention concerne également des procédés d'utilisation de ces compositions de révélateur.
Alexandrovich Peter S.
Fields Robert D.
Satyanarayan Srinivasan A.
Eastman Kodak Company
Heidelberg Digital L.l.c.
Nexpress Solutions Llc
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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