Apparatus for forming a photosensitive element having a layer of particulate material
AssigneeE. I. Du Pont de Nemours and Company
InventorsRoxy Ni Fan, William John Hommes
Life of this patent
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Abstract
The invention relates to a process and apparatus for forming a photopolymerizable element useful as a flexographic printing plate having at least one layer of particulate material. The process includes forming a layer of a molten photopolymerizable material onto a support; and applying the particulate material onto an exterior surface of the photopolymerizable layer opposite the support within 48 hours of forming the layer of photopolymerizable material. The process optionally includes heating of the surface of the photopolymerizable layer.
Claims29
An apparatus for applying particulate material on a photopolymerizable element useful as a flexographic printing plate comprising:
- means for forming a layer of a molten photopolymerizable material onto a support;
- means for applying particulate material onto an exterior surface of the photopolymerizable layer opposite the support;
- and
- means for providing relative movement between the layer of photopolymerizable material and the means for applying particulate material, wherein the exterior surface of the photopolymerizable layer has area portions each of which experience the same or substantially the same particulate application conditions.
An apparatus for applying particulate material on a photopolymerizable element useful as a flexographic printing plate comprising:
- means for mounting the photopolymerizable element having a layer of photopolymerizable material on a support;
- means for applying the particulate material onto an exterior surface of the photopolymerizable layer opposite the support;
- and
- means for providing relative movement between the photopolymerizable layer and the means for applying the particulate material, wherein the exterior surface of the photopolymerizable layer has area portions each of which experience the same or substantially the same particulate application conditions.
An apparatus for applying particulate material on a photopolymerizable element useful as a flexographic printing plate comprising:
- means for mounting the photopolymerizable element having a layer of photopolymerizable material on a cylindrical support;
- means for applying the particulate material onto an exterior surface of the photopolymerizable layer opposite the support, wherein the means for applying comprises an applicator assembly having a cylindrical applicator pad;
- and
- means for heating the exterior surface of the photopolymerizable layer.
Dependencies are inferred from the claim text.