Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Reexamination Certificate
2008-05-27
2008-05-27
RoDee, Christopher (Department: 1795)
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
C430S108700, C430S109300
Reexamination Certificate
active
10505914
ABSTRACT:
The present invention relates to a non-magnetic mono-component toner composition, which comprises a) a non-magnetic toner particle comprising a binding resin comprising a binder resin and a copolymer of a cyclic olefin and an acyclic olefin polymerized in the presence of a metallocene catalyst and a cocatalyst, a colorant, and a charge-control agent; b) fine powder of an organic compound containing fluorine that is added to the surface of the non-magnetic toner particle; and c) hydrophobic silica having a specific surface area of 100 to 240 m2/g. The toner composition of the present invention has superior transfer efficiency and charging properties and thus can obtain a stable image, does not show deteriorated image density, and does not generate background contamination of non-image areas and off-set due to deterioration of fixing properties, even if copying or printing is conducted therewith for a long time use.
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Han Hyea-Eun
Lee Chang-Soon
Lee Won-Sup
Song Kwang-Ho
Cantor & Colburn LLP
LG Chem Ltd.
RoDee Christopher
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