E.i. Dupont De Nemours and Company

Carl Bernard Arnold

Andreas Koch

Robert A McMillen

Theodore William Frentzel, Jr

James K Odle

Edmund Francis Schieffer, Jr

Thomas William Harding

Helmut Luetke

William S Page

Gary W Foggin

Masayuki Kato

Ib Vestergaard

Soeren Joergensen

The invention relates to a method for preparing a relief printing plate from a printing plate precursor wherein at least an end of the precursor is attached to a leader forming a composite printing form precursor that securely mounts the precursor in a treatment processor. The present method advantageously allows for all or substantially all of the area of the precursor to be utilized for forming the relief surface suitable for printing.

Composite printing form precursor and method for preparing a printing form precursor for treatment

The invention pertains to a method and apparatus for preparing a printing form from a precursor, particularly a method and apparatus for preparing the printing form by thermally treating a photosensitive precursor having a photopolymerizable layer. The method and apparatus includes heating the photosensitive precursor to a temperature sufficient to cause a portion of the layer to liquefy, contacting the precursor with a development medium to remove the liquefied material, and supporting a development medium with a core member adjacent an exterior surface of the photosensitive precursor, wherein a compressible collar of a closed-cell foam having a Poisson's ratio of less than 0.4 is disposed between the core member and the development medium.

Method and an apparatus having a compressible collar for thermally treating a photosensitive precursor

A heating step is performed in a printing operation where a gas jet emitting from a nozzle assembly impinges the exterior surface of a printing plate. The gas impingement provides rapid and specific convective heat flux to the exterior surface of the printing plate.

Method and apparatus for thermal treatment of printing surface in relief printing

The present invention pertains to a method for preparing a printing form from a photosensitive element by thermal treatment, wherein a gas jet emitting from a nozzle assembly impinges the exterior surface of the element to smooth or polish and mitigate marks and deformations that can be generated during development. Impingement with a heated gas jet provides surface polishing from rapid and specific convective heat flux to the exterior surface of the printing plate.

Method for thermal treatment of relief surface for a relief printing form

A method and apparatus of securing and tensioning a printing form in an apparatus having a rotatable drum includes securing a first portion of the printing form to a first means for receiving that is coupled to a surface of the drum, and securing a second portion of the printing form to a second means for receiving that is disposed on a rotatable member that extends over a portion of the drum. The rotatable member is rotated so that the circumferential distance between the first receiving means and the second receiving means is about the same as a length of the printing form. A rotary torque means is coupled to the rotatable member to apply a substantially constant torque on the member and tension the printing form about the surface of the drum. The rotary torque means adjusts torque on the member which adjusts tension on the printing form.

Method and apparatus for tensioning a printing form

A method and apparatus for preparing a relief printing form from a photosensitive element that includes a photopolymerizable composition layer having an exterior surface and capable of being partially liquefied. The method includes the steps of (a) heating the exterior surface of the photopolymerizable composition layer to a temperature sufficient to cause a portion of the layer to liquefy, forming the liquefied material; and (b) removing the liquefied material; wherein the heating step is performed using vibrationally-induced frictional energy.

Method for preparing a printing form using vibrational energy

The invention relates to improved compositions comprising paraffin waxes and fluoropoylmer micro powders, and to their uses in products and articles where reduced friction is desirable, such as snow slider equipment.

Lubricant composition for use in snow sliders

The present invention relates to an electronic assembly, apparatus and process for scanning input information from patient information cards, processing the information and imaging the processed information on films and, in particular, on X-ray films in automatic daylight film handling systems.

Patient information apparatus

The invention relates to an apparatus for diverting a sheet having a leading edge to a first position or a second position. The apparatus comprises a first roller, a second roller, a third roller, a fourth roller and a diverter assembly. The first roller has segments separated by first gaps. The second roller has segments separated by second gaps. The second roller segments form incoming nips with the first roller segments. The third roller has segments separated by third gaps. The third roller segments form first exit nips with the first roller segments. The fourth roller has segments separated by fourth gaps. The fourth roller segments form second exit nips with the second roller segments. The diverter assembly has diverter segments positionable within at least one of the first gaps, the second gaps, the third gaps and the fourth gaps. The diverter assembly is for directing the leading edge of the sheet from the incoming nips to the first exit nips or the second exit nips.

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Newark, DE, United States of America

Carl Bernard Arnold