1
Paul R West, Jeffery A Gurney: Photopolymerization initiator system comprising a spectral sensitizer and a polycarboxylic acid co-initiator. Eastman Kodak Company, Alfred P Lorenzo, Joshua G Levitt, J Lanny Tucker, May 13, 1997: US05629354 (18 worldwide citation)

Improved photopolymerization initiator systems are comprised of a spectral sensitizer that sensitizes in the ultraviolet or visible regions of the spectrum and an N-aryl, O-aryl or S-aryl polycarboxylic acid co-initiator. The improved initiator systems are incorporated in photo-polymerizable composi ...


2
Eugene L Sheriff, Paul R West, Jeffery A Gurney, Thap DoMinh: Infrared-sensitive diazonaphthoquinone imaging composition and element containing non-basic IR absorbing material and methods of use. Kodak Polychrome Graphics, Ratner & Prestia, September 12, 2000: US06117610 (12 worldwide citation)

An infrared imaging composition contains two essential components, a non-basic infrared radiation absorbing material (such as carbon black), and a phenolic resin that is either mixed or reacted with an o-diazonaphthoquinone derivative. These compositions are useful in positive-working or negative-wo ...


3
Paul R West, Jeffery A Gurney, Neil F Haley: Positive-working infrared radiation sensitive composition and printing plate and imaging method. Kodak Polychrome Graphics, Ratner & Prestia, July 18, 2000: US06090532 (9 worldwide citation)

A positive-working lithographic printing plate is used to provide a positive image without a post-exposure baking step and without any floodwise exposure steps. The printing plate includes a layer that is imageable using an infrared radiation laser. This layer consists essentially of a phenolic resi ...


4
Gary R Miller, Melanie A Felker, Paul R West, Jeffery A Gurney, Neil F Haley: Methods of imaging and printing with a positive-working infrared radiation sensitive printing plate. Ratner & Prestia, July 4, 2000: US06083662 (9 worldwide citation)

A positive-working lithographic printing plate is used to provide a positive image without a post-exposure baking step and without any floodwise exposure steps. The printing plate includes a layer that is imageable using an infrared radiation laser. This layer consists essentially of a phenolic resi ...


5
Paul R West, Jeffery A Gurney, John E Walls: 1Postitve-working imaging composition and element and method of forming positive image with a laser. Kodak Polcyhrome Graphics, Ratner & Prestia, May 9, 2000: US06060222 (7 worldwide citation)

A positive image can be obtained from a positive-working element that is sensitive to infrared radiation. The element comprises an imaging layer containing an alkali-soluble reactive resin (such as a phenolic resin), an infrared radiation absorbing compound, a thermochemical acid generating compound ...


6
Paul R West, Jeffery A Gurney, John E Walls: Positive-working imaging composition and element and method of forming positive image with a laser. Kodak Polychrome Graphics, Ratner & Prestia, December 4, 2001: US06326123 (5 worldwide citation)

A positive image can be obtained from a positive-working element that is sensitive to infrared radiation. The element comprises an imaging layer containing an alkali-soluble reactive resin (such as a phenolic resin), an infrared radiation absorbing compound, a thermochemical acid generating compound ...


7
Thap DoMinh, Paul R West, Jeffery A Gurney, John Kalamen, Christopher J Kloxin: Photosensitive polymer composition and element containing photosensitive polyamide and mixture of acrylates. Kodak Polychrome Graphics, Ratner & Prestia, July 20, 1999: US05925498 (4 worldwide citation)

A photosensitive composition can be used to prepare negative-working photosensitive elements such as lithographic printing plates. The composition includes a first photocrosslinkable aromatic resin having photocrosslinkable groups and a number average molecular weight of at least about 1500. Also in ...