The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 15, 2005
Filed:
Jan. 27, 2004
Kenneth J. Ruschak, Rochester, NY (US);
Rukmini B. Lobo, Rochester, NY (US);
Jess A. Anderson, Windsor, CO (US);
Richard A. Gilkey, Greeley, CO (US);
David A. Wakefield, Canandaigua, NY (US);
Kenneth J. Ruschak, Rochester, NY (US);
Rukmini B. Lobo, Rochester, NY (US);
Jess A. Anderson, Windsor, CO (US);
Richard A. Gilkey, Greeley, CO (US);
David A. Wakefield, Canandaigua, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A method and apparatus is disclosed for gravure coating a liquid reactive with the atmosphere onto a web. The gravure apparatus comprises an engraved gravure cylinder, an impression roller backing the web and pressing it onto the gravure cylinder to form a nip, a curtain or jet formation means to wet the surface of the gravure cylinder, and a doctor blade means for wiping excess coating liquid from the surface of the gravure cylinder prior to the nip. A shroud encompassing the gravure cylinder and the curtain or jet formation means creates a first zone between the nip and a partitioning baffle extending from the shroud, a second zone between the partitioning baffle and the doctor blade means, and a third zone between the doctor blade means and the nip. A gas non-reactive with the coating liquid is supplied to each zone by a gas distribution means such that the reaction rate of the coating liquid with the atmosphere is greatly reduced and the curtain or jet is not disrupted. In a particularly preferred embodiment, the gravure apparatus and shroud are enclosed by solid walls and doors.