The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 26, 2007
Filed:
Jul. 18, 2002
Rolf Knöll, Weinheim, DE;
Hartmut Sandig, Frankenthal, DE;
Uwe Stebani, Flörsheim-Dalsheim, DE;
Thomas Telser, Weinheim, DE;
Thomas Zwez, Karlsruhe, DE;
Rolf Knöll, Weinheim, DE;
Hartmut Sandig, Frankenthal, DE;
Uwe Stebani, Flörsheim-Dalsheim, DE;
Thomas Telser, Weinheim, DE;
Thomas Zwez, Karlsruhe, DE;
XSYS Print Solutions Deutschland GmbH, Stuttgart, DE;
Abstract
The present invention relates to a photosensitive flexographic printing element for the production of flexographic newspaper printing plates, comprising at least a flexible, metallic support, an adhesive layer applied thereto, a photopolymerizable layer which can be developed in organic media and which itself comprises at least one elastomeric binder, ethylenically unsaturated monomers, a photoinitiator or photoinitiator system and a plasticizer, a transparent substrate layer, and optionally a removable protective film, where the total thickness of the flexographic printing element is from 300 to 1000 μm, the elastomeric binder has a weight average molecular weight Mof from 80,000 to 150,000 g/mol and a Shore A hardness of from 50 to 80, and the amount of plasticizer is from 5 to 50% by weight, based on the amount of all constituents of the photopolymerizable layer, and to a process for the production of flexographic newspaper printing plates by imagewise exposure of the flexographic printing element to actinic light, followed by development and drying at from 105 to 160° C.