Cationic shelled particle

Details Cationic shelled particle Cationic shelled particle

2005-07-12

2005-07-12

Le, H. Thi (Department: 1773)

Stock material or miscellaneous articles

Ink jet stock for printing

Particles present in ink receptive layer

C428S032360, C428S032370, C428S403000, C428S407000

Reexamination Certificate

active

06916514

ABSTRACT:
The invention relates to a cationic shelled particle comprising a colloidal alumina core having a median diameter of between 20 and 2000 nm and a positive charge, a layer on the surface of said core particle having a negative charge and comprising particles of a median diameter of less than 30% of the median diameter of said core particle, and an outer layer of positive charge.

REFERENCES:
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patent: 5576088 (1996-11-01), Ogawa et al.
patent: 6403526 (2002-06-01), Lussier et al.
patent: 6475603 (2002-11-01), Wexler
patent: 6479146 (2002-11-01), Caruso et al.
patent: 6630212 (2003-10-01), Bermel et al.
patent: 6645582 (2003-11-01), Sadasivan et al.
patent: 6770336 (2004-08-01), Wang et al.
patent: 6818685 (2004-11-01), Chapman
Journal of American Chemical Society, 1998, vol. 120, pp. 8523-8524.

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