Eastman-Kodak Company

Rukmini B Lobo

Barry A Fitzgerald

Mridula Nair

Kenneth J Ruschak

Lloyd A Lobo

David A Wakefield

David Charles Boris

Anita M Fees

Ramasubramaniam Hanumanthu

Scott A Strong

Richard A Gilkey

Ravi Sharma

Constantine N Anagnostopoulos

Bradley K Coltrain

Kevin M O'Connor

Charles S Christ, Jr

Richard C Van Hanehem

Alan R Bentz

James P Heetderks

David W Walters

Ralph Peter Schultz

Roger D Beam

Michael P Ewin

Jess A Anderson

Mikel S Hill

A gravure method for applying a discrete patch () of uniform coating to a moving web () includes defining a nip area () between a gravure roller () and a backing roller (), moving the gravure roller to the nip to a precise lengthwise location on the web, and moving the gravure roller from the nip. The method is improved by controlling the speed of movement of the gravure roller to the nip, and controlling the speed of movement of the gravure roller from the nip thereby producing a discrete patch.

Gravure cylinder patch coating apparatus and method

A metal oxide coating and a method of forming the metal oxide coating are disclosed, wherein the metal oxide coating composition includes a metal oxide precursor of the metal oxide, the metal oxide, or a combination thereof, and a solvent of secondary or tertiary C&#x2013;Calcohol.

Metal oxide coating

Disclosed is a protective transparent overcoat comprising a protective polymer and a surfactant compound having multiple non-end-group hydrogen bonding groups directly or indirectly bonded to the backbone chain of the surfactant compound. The coating enables simplified manufacturing of a thermal sublimation dye transfer donor of high quality.

Protective overcoat and process for thermal dye sublimation prints

Disclosed is a process for imaging a media for receiving jetted ink, including a support, coated with a hydrophobic film, bearing a predetermined array of three dimensional cells composed of hydrophobic walls and a hydrophilic base, the cell walls being composed of a material that fused subsequent to printing to provide an overcoat layer.

Receiver media for high quality ink jet printing

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.

Gravure method and apparatus for coating a liquid reactive to the atmosphere

A coating element has a liquid deflector member for diverting doctored coating liquid away from the surface of a coating applicator roll. The liquid deflector member is arranged beneath a blade member that removes excess coating liquid from the surface of the coating applicator roll. Excess coating liquid follows a path away from the coating applicator roll surface and down the active face of the liquid deflector member, thereby avoiding contamination of the applicator roll surface.

Element for deflecting excess liquid from a coating surface

An apparatus for coating a web of indeterminate length has a coating element comprising a liquid deflector member for diverting liquid away from a coating surface. The liquid deflector member is arranged beneath a blade member that removes excess coating liquid from the coating surface. Excess coating liquid follows a path away from the coating surface and down the liquid deflector member thereby avoiding contamination of the coating surface.

Apparatus for coating a web

The present invention is a method of providing an imaging element which includes providing a gravure cylinder having an outer surface having a plurality cells. The surface of the cylinder is moved through a coating solution of a film forming organic polymer to fill the cells with coating solution. An imaging element is moved across the outer surface of the gravure cylinder to deposit the coating solution onto the imaging element such that a fraction of the imaging element of from 0.02 to 0.98 remains uncovered with coating solution. The coating solution is dried to form a discontinuous overcoat on the imaging element.

Method of forming a discontinuous polymer overcoat for imaging elements

The present invention is an imaging element which includes a support, an imaging layer superposed on a side of said support and an overcoat overlying the imaging layer. The overcoat is composed of an organic polymer. The overcoat is discontinuous such that a fraction of the surface area of the imaging layer remains uncovered by said polymer, wherein the fraction of area not covered by the said polymer is from 0.02 to 0.98. The present invention is a photographic which includes a support, a silver halide emulsion layer superposed on a side of said support and an overcoat overlying the silver halide layer. The overcoat is composed of an organic polymer. The overcoat is discontinuous such that a fraction of the surface area of the silver halide emulsion layer remains uncovered by said polymer, wherein the fraction of area not covered by the said polymer is from 0.02 to 0.98. In one embodiment, the discontinuous overcoat is a series of parallel stripes.

Polymer overcoat for imaging elements

A coating feed apparatus and method (,) for depositing a uniform overflow curtain-like layer of coating composition (c) to a gravure surface (,) has a reservoir (,) and means for delivering the coating composition to the gravure surface (,). The reservoir (,) has a base (,) sloped upwardly from a rear wall (,). A widthwise lip (,) is directed generally downwardly towards the gravure surface (,). Widthwise lip (,) and the undercut portion (,) together enable the coating composition (c) exiting the outlet end (,) of the reservoir (,) to overflow downwardly across widthwise lip (,) in a uniform curtain-like layer (,) towards the gravure surface (,) without creating a backflow of coating composition along the base (,).

Curtain feed method for a gravure process

An apparatus for coating surfaces consists of a basin, open to the atmosphere, divided into two channels by a wall running perpendicular to the coating direction. Liquid is supplied to the primary channel, the channel farther from the curtain. A continuous, adjustable gap between the dividing wall and the bottom of the basin offers resistance to flow but passes the coating composition from the primary to the secondary channel. The secondary channel has an edge that is horizontal and relatively low so that the coating composition overflows it to form a free-falling curtain. The dividing wall, by providing flow resistance, assists in distributing the supplied coating composition along the length of the primary channel, and reduces any flow disturbances caused by the entering coating composition. The secondary channel promotes additional evening of the flow distribution before the curtain forms.

Coating surfaces with a free falling coating composition, using a basin

A coating feed apparatus and method (10) for depositing a uniform overflow curtain-like layer of coating composition (c) to a gravure surface (14) has a reservoir (14) and means for delivering the coating composition to the gravure surface (14). The reservoir (14) has a base (24) sloped upwardly from a rear wall (22). A widthwise lip (40) is directed generally downwardly towards the gravure surface (14). Widthwise lip (40) and the undercut portion (48) together enable the coating composition (c) exiting the outlet end (26) of the reservoir (12) to overflow downwardly across widthwise lip (40) in a uniform curtain-like layer (32) towards the gravure surface (14) without creating a backflow of coating composition along the base (24).

Gravure coating feed apparatus

The present invention describes a method for engraving a gravure cylinder. The method includes determining the coverage of the liquid composition desired, and then selecting parameters including the stylus angle and compression angle. The channel width to cell width ratio and the wall width to cell width ratio are specified. From this the cell width, channel width and wall width are calculated. The gravure cylinder is engraved according to the stylus angle, compression angle, wall width, channel width and cell width.

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Webster, NY, United States of America

Rukmini B Lobo