Rockwell International Corporation

Pamarco Incorporated

Stanley H Hycner

Thomas A Fadner

Garry F Tupek

Walter J Pelczarski

Shem-Mong Chou

Edward R Harenza

Nelson M Robinson

A fluid metering roll such as an anilox roll is comprised of a tubular carbon fiber composition core having one or more metallic layers intervening between the core and a surface layer comprised of ceramic, the ceramic having outwardly opening fluid metering cells. The method of forming the roll includes steps of thermal spray applying one or more layers comprised of metal over the roll surface the layers intervening between the roll and an external ceramic coating. Characterizing features of the application method reside in each of the thermal spray applied layers being directed toward the core at a negative rake angle of from about 11&frac12; to about 13&frac12; and preferably 12&frac12;&deg;, the core and layers which receive the thermal spray being simultaneously cooled to about 110&deg; Centigrade or less during application of the thermal spray. The method and article are further characterized in that the coefficient of thermal expansion of the layers intervening between the core and the outermost ceramic layer form a progression whereby the intermediate layers have thermal characteristics which progressively become smaller in the outward direction.

Fluid metering roll and method of making the same

A fluid metering roll such as an anilox roll is comprised of a tubular carbon fiber composition core having one or more metallic layers intervening between the core and a surface layer comprised of ceramic, the ceramic having outwardly opening fluid metering cells. The method of forming the roll includes steps of thermal spray applying one or more layers comprised of metal over the roll surface the layers intervening between the roll and an external ceramic coating. Characterizing features of the application method reside in each of the thermal spray applied layers being directed toward the core at a negative rake angle of from about 111/2.degree. to about 131/2.degree. and preferably 121/2.degree., the core and layers which receive the thermal spray being simultaneously cooled to about 110.degree. Centigrade or less during application of the thermal spray. The method and article are further characterized in that the coefficient of thermal expansion of the layers intervening between the core and the outermost ceramic layer form a progression whereby the intermediate layers have thermal characteristics which progressively become smaller in the outward direction.

Fluid metering roll

A printing fluid input system (30) for use in a keyless lithographic printing press wherein a metering roller (20) has at least first and second ends mounted for rotation about an axis and has an oleophilic and hydrophobic surface (40) intermediate the first and second ends (32,34) which retains a natural quantity of printing fluid. A housing (42) has an open first side (46) which mates with at least a portion of the surface (40) of the metering roller (20) to define a closed chamber (44) containing the printing fluid under a predetermined pressure. End seal assemblies (48, 50) are mounted on opposed ends of the housing (42), each of the end seal assemblies (48,50) having at least a first surface (56) for mating with respective end sections (58,60) of the metering roller (20). A reverse angle doctor blade (62) on the housing (42) has an edge (66) for contacting the surface (40) of the metering roller (20) for removing excess printing fluid adhering to the surface (40) as the metering roller (20) rotates. A sealing member (68) on the housing (42), has a surface area (72) for substantially sealing the chamber (44), the surface area (72) of the sealing member (68) being substantially adjacent the surface (40) of the metering roller (20). The metering roller (20), the end seal assemblies (48,50) the reverse angle doctor blade (62) and the sealing member (68) seal the chamber (44) such that the printing fluid is under the predetermined pressure. The housing (42) can be located anywhere about the circumference of the metering roller (20).

Pressurized printing fluid input system for keyless lithographic printing

An ink metering roller of an engraved aluminum base having a substantially continuous anodized surface layer of aluminum oxide ranging from about 1 to 3 microns in thickness and a layer of copper plate deposited directly onto the anodized surface.

Copper coated anodized aluminum ink metering roller

A keyless inking system for lithographic printing presses wherein an ink/water mixture is contained in an ink pan having a tray portion within which an ink roller is mounted whereby ink/water mixture enters the tray portion on one side and is drawn by the ink roller to the other side of the tray in the nip between the ink roller and a celled metering roller thereby delivering an excess of the mixture to the celled metering roller, the balance of the mixture being conveyed over a weir into a reservoir for continuous mixing and recirculation back to the pan, and wherein the excess ink/water mixture on the metering roller is continuously scraped off by means of a doctor blade and wherein the metered portion of the ink/water mixture remaining in the metering roller's cells is delivered in part into the inking train of a more-or-less conventional lithographic printing press.

Keyless inking system for offset lithographic printing press

A steel ink metering roller for use in lithographic printing having an engraved surface that has been nitride hardened followed by an oxidizing process that results in a surface with a composition of mainly Fe.sub.3 O.sub.4.

Growing community of inventors

Batavia, IL, United States of America

Stanley H Hycner