Eastman-kodak Company

Brooks J Schneider

Mark Cameron Zaretsky

Ernest A Graff

Paul A Corbelli

David R Matzan

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

Apparatus and method for measuring camber of a web material. As the web material is transported across a conveyance roller, a load cell disposed at each end of the conveyance roller measures the force applied by the web material to the conveyance roller for a particular width location of the web material. An electrical signal corresponding to the applied force is transmitted to a computer and manipulated to a camber measurement.

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Rochester, NY, United States of America

Brooks J Schneider