Eastman-kodak Company

Paul A Corbelli

Lloyd A Lobo

James Stephen Honan

Andrew M Howe

John S Brand

Ryan B Adams

Mark Cameron Zaretsky

Walter Johannes

John R Tinney

Glen S Lichtenberg

Peter J Despard

Brooks J Schneider

Gerald Thomas Frizelle

The present invention generally relates to methods of preparing stable colloidal dispersions of nanoparticulate size fumed silica particles. More particularly, the invention relates to a method of rapidly wetting and dispersing fumed silica powder for obtaining a coatable dispersion, particularly in the manufacture of inkjet media.

Method and apparatus for dispersion of high-surface-area, low-bulk-density fumed silica

A method for coating a liquid composition from an applicator to a first surface of a moving web having opposite first and second surfaces, the web being conveyed along a path through a coating apparatus, the coating apparatus including a charge neutralization station for neutralizing stray charges on the web, the charge neutralization station including a backing roller and means for depositing a charge on the web includes the steps of: wrapping the web in a partial wrap around the backing roller, the backing roller being provided with a conductive, relieved surface, the relieved surface having a pattern of circumferential grooves that provides venting of entrained air, the pattern having a geometry and depth such that any charge left on the web does not disturb the coating applied by the coating apparatus; providing a source of electrostatic charge at the charge neutralization station to neutralize any charge on the web; and transporting the charge neutralized web to a coating station, where a liquid composition is applied to the first surface, whereby the coating of liquid composition is not disturbed by stray electrostatic charges.

Electrostatic charge neutralization using grooved roller surface patterns

The present invention relates to an imaging member comprising poultry gelatin. In one embodiment, the poultry gelatin is located preferably in at least one layer in the upper half of said imaging member comprising poultry gelatin. Another embodiment provides an aqueous coating composition comprising poultry gelatin.

Photographic element containing acid processed gelatin

An apparatus and method for mixing photographic emulsions is disclosed. The mixer is a truncated hollow cone having a first circumference and a second end having a second circumference. The second circumference is larger than the first circumference. The cone is attached to an end of a central shaft attached to the first end. The rotation of the shaft produces micromixing of the photographic emulsion while minimizing air entrainment.

Viscous shear mixing device and method

The present invention is the use of stellite material for all contact surfaces between moving parts and a metering pump pumping silver photographic emulsion. All parts that are in contact with the solutions containing silver made of stellite will prevent failure of rotating assemblies due to metallic silver plateout between rotating parts. Prior art pumps exhibited silver plateout after very few hours of operation.

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LeRoy, NY, United States of America

Paul A Corbelli