E.i. Dupont De Nemours and Company

Anandkumar R Kannurpatti

Mark A Hackler

Dietmar Dudek

Robert A McMillen

Jeffrey Robert Lake

William W Early

David Anthony Belfiore

David B Neufeglise

Todd M Scheske

Pier Luigi Sassanelli

Christoph Mengel

Roxy Ni Fan

Melvin H Johnson

Howard Ensign Simmons, Iii

Bradley K Taylor

Andreas Koch

Adrian Lungu

Stephen Cushner

John W Trainor, Jr

Robert Finley Drury

Robert Lee Brown

Wilford Shamlin

Robert A Mcmillen

Sheila Weaver

Siegried R Scheske

Arthur John Taggi

Robert A Mc Millen

The invention relates to an imaging element and a method of using the imaging element to form a recording element. The imaging element includes a composition sensitive to actinic radiation at a first wavelength and a photoluminescent tag that is responsive to radiation at a second wavelength different from the first wavelength. The photoluminescent tag can be used to authenticate the identity of the element, provide information about the element, and/or to establish one or more conditions in a device used to prepare the recording element from the imaging element.

Printing form precursor for use as a recording element

This invention relates to a method and apparatus for thermally developing a photosensitive element. The thermal development method includes heating the photosensitive element to a temperature sufficient to cause a portion of a composition layer in the element to liquefy, soften, or melt; supporting a development medium with a non-rotating surface to provide contact of the development medium with the heated photosensitive element; and providing relative movement between the development medium and the non-rotating surface.

Apparatus for thermal development with supporting surface for a development medium

Method for thermal development with supporting surface for a development medium

The invention is a method and apparatus for forming a relief structure by thermally developing a photosensitive element containing a composition layer capable of being partially liquefied. During thermal development, the photosensitive element is supported on a base member having an exterior surface that is textured. The textures for the exterior surface include a particular surface roughness and/or patterns.

Method and apparatus for thermal development having a textured support surface

This invention pertains to a method and apparatus for thermally developing a photosensitive element, and particularly to a method and apparatus for supporting the photosensitive element with a removable flexible support member during thermal treatment.

Method for thermal development using apparatus having a removable support member

This invention relates to a method and apparatus for thermally developing a photosensitive element. The thermal development method includes heating the photosensitive element to a temperature sufficient to cause a portion of a composition layer in the element to liquefy, soften, or melt, contacting the heated photosensitive element with a development medium to absorb the liquefied portion at a contact location, and removing the development medium from the photosensitive element with a remover at a location away from the contact location.

Method and apparatus for thermal development with development medium remover

Apparatus for thermal development having a removable support member

A flexographic printing plate is prepared from a photosensitive element having a photopolymerizable elastomeric layer with specific rheological properties. The element is imagewise exposed and thermally treated to form a relief structure suitable for flexographic printing.

Process for preparing a flexographic printing plate

A method and apparatus for thermal processing a photosensitive element includes heating a composition layer on a flexible substrate to a melt temperature of an unirradiated area of the composition layer and maintaining the flexible substrate at a temperature below the melt temperature while pressing a heated absorbent layer against the heated composition layer, and repeating these steps for multiple cycles. A further embodiment of the method includes a step of cooling the flexible substrate and layer laminate on each cycle to maintain the flexible substrate at the desired temperature below that of the heated composition layer.

Method and apparatus for thermal processing a photosensitive element

The invention relates to a process for preparing a flexographic printing plate from a photosensitive element having a photopolymerizable layer and a thermally removable layer on the photopolymerizable layer. The process includes imagewise exposing the photosensitive element and thermally treating the exposed element to form a relief suitable for use in flexographic printing. The thermally removable layer can be transparent or opaque to actinic radiation. The invention also relates to a photosensitive element for use in this process. The photosensitive element includes a photopolymerizable layer and at least one thermally removable layer having a filler and a binder, wherein the binder is less than 49% by weight, based on the total weight of the binder and filler.

Process for making a flexographic printing plate and a photosensitive element for use in the process

Flexographic printing plate is made from a laser engravable flexographic printing element which includes on a support at least one laser engravable reinforced elastomeric layer of an elastomeric composition comprising an elastomeric binder, at least one monomer, a photoinitiator system that decreases in ultraviolet absorbance as polymerization proceeds and at least one additive which absorbs infrared radiation at 9 to 12 micrometers.

Laser engravable flexographic printing element and a method for forming a printing plate from the element

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Glen Mills, PA, United States of America

Anandkumar R Kannurpatti