Jerome D Jenkins

US Patent:

6354213, Mar 12, 2002

Filed:

Apr 3, 2000

Appl. No.:

09/541636

Inventors:

Jerome D. Jenkins - Brookfield WI 53045

International Classification:

B41C 105

US Classification:

101483, 101487

Abstract:

An apparatus and method for cleaning a metering roll having a composite sleeve or a metal core with a ceramic coating involves the use of a laser. The rolls ceramic coating is covered with a matrix of cells that can get plugged with a polymeric contaminant, such as dried ink. The laser is uniquely focused to provide a beam intensity profile that matches multiple curved surfaces of the cells. The laser applies heat to each cell at a temperature that destroys the contaminant, yet leaves the ceramic coating intact. The heat is rapidly delivered and rapidly removed from the roll to minimize the amount of heat conducted to the rolls metal core. In addition, a special pneumatic guide bearing makes it possible to clean the metering roll while it is still in the printing press.

US Patent:

49634046, Oct 16, 1990

Filed:

Mar 3, 1988

Appl. No.:

7/148214

Inventors:

Jerome D. Jenkins - Wauwatosa WI

Assignee:

Stork Screens B.V.

International Classification:

B41N 700
C23C 2800

US Classification:

428 347

Abstract:

Process for the production--using plasma spraying--of a coated product in which the coating consists of a ceramic fluorocarbon polymer-comprising coating, while between the surface of the product and the ceramic fluorocarbon polymer-comprising coating an adhesion layer completely of metal is applied. The adhesion layer consists in particular of at least two metals reacting exothermally with each other under plasma spraying conditions. In particular, the product to be coated is a thin-welled nickel, seamless cylinder with a wall thickness of 50-220. mu. m. The invention also relates to an ink transfer roller in which a thin-walled seamless cylinder obtained by the process according to the invention is used.

US Patent:

47930411, Dec 27, 1988

Filed:

Dec 11, 1987

Appl. No.:

7/132716

Inventors:

Jerome D. Jenkins - Wauwatosa WI
Neal G. Schultz - Milwaukee WI

International Classification:

B21B 2700

US Classification:

291211

Abstract:

An ink transfer roll composed of a steel base covered by a ceramic-fluorocarbon outer layer into which are formed generally cylindrically shaped ink holes having a hemispherical bottom, a generally cylindrical intermediate portion and a rounded, beveled entryway. The ink holes are produced using a pulsed high energy source, such as a pulsed laser. An intermediate layer of corrosion resistant metal and fluorocarbon may be deposited between the steel base and the outer layer of ceramic-fluorocarbon material. Adhesion of the ceramic-fluorocarbon layer to the transfer roll is improved if corrosion resistant metal-fluorocarbon material is contained in the ceramic-fluorocarbon layer such that the quantity of corrosion resistant metal-fluorocarbon material in the ceramic-fluorocarbon layer gradually decreases in the direction away from the intermediate layer-outer layer interface, the quantity of corrosion resistant metal-fluorocarbon material in said outer layer being greatest at said interface.

US Patent:

47351446, Apr 5, 1988

Filed:

May 21, 1986

Appl. No.:

6/865279

Inventors:

Jerome D. Jenkins - Wauwatosa WI

International Classification:

B41F 3102

US Classification:

101464

Abstract:

An ink metering system for a rotating ink roll having a shaft journalled in the frame of a inking system includes two doctor blades and a mechanism for supporting the doctor blades on the shaft of the ink roll so that the doctor blades contact the ink roll under uniform pressure independent of movement between the ink roll and the frame. The arrangement also includes a mechanism for adjusting the pressure of the doctor blades and for sealing the system. The doctor blade is composed of polytetrafluoroethylene-polyphenylene sulfide ceramic resin containing graphite fibers. The doctor blade includes a number of laminated sheets of this material in which a majority of the sheets include fibers oriented in the machine direction and at least one sheet includes fibers oriented perpendicular to the machine direction.

US Patent:

45669384, Jan 28, 1986

Filed:

Feb 17, 1984

Appl. No.:

6/581121

Inventors:

Jerome D. Jenkins - Wauwatosa WI
Neal G. Schultz - Milwaukee WI

International Classification:

B23K 900
B41F 146
B44C 122

US Classification:

156643

Abstract:

An ink transfer roll composed of a steel base covered by a ceramic-fluorocarbon outer layer into which are formed generally cylindrically shaped ink holes having a hemispherical bottom, a generally cylindrical intermediate portion and a rounded, beveled entryway. The ink holes are produced using a pulsed high energy source, such as a pulsed laser. An intermediate layer of corrosion resistant metal and fluorocarbon may be deposited between the steel base and the outer layer of ceramic-fluorocarbon material. Adhesion of the ceramic-fluorocarbon layer to the transfer roll is improved if corrosion resistant metal-fluorocarbon material is contained in the ceramic-fluorocarbon layer such that the quantity of corrosion resistant metal-fluorocarbon material in the ceramic-fluorocarbon layer gradually decreases in the direction away from the intermediate layer-outer layer interface, the quantity of corrosion resistant metal-fluorocarbon material in said outer layer being greatest at said interface.