Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Reexamination Certificate
2005-03-08
2005-03-08
Goodrow, John L (Department: 1756)
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
C430S109300, C430S110400, C430S111340
Reexamination Certificate
active
06864031
ABSTRACT:
The present invention provides an electrophotographic developer which reduces toner contamination on the surface of a developer carrier even when a development effective range is narrowed and which is stabilized in an image quality in every environmental situation and has a long life and a low cost and an image-forming method using the same.In the present invention, used for the electrostatically charged-image holder described above having a radius of curvature of 18 mm or less in a development effective range is the electrophotographic developer which is a two-component developer comprising a toner comprising at least a binder and a colorant and a carrier which is coated with a resin and has a weight average particle diameter of 40 to 100 μm, wherein the above toner has a volume average particle diameter of 8 to 11.5 μm, and the toner particles having a diameter of 6.35 μm or less account for 20 number % or less.
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Bito Takahiro
Imafuku Tatsuo
Ishida Toshihisa
Saito Junichi
Alexander John B.
Conlin David G.
Edwards & Angell LLP
Goodrow John L
Sharp Kabushiki Kaisha
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