Nanopastes for use as patterning compositions
AssigneeKodak Polychrome Graphics LLC
InventorsKevin Ray, Jianbing Huang, Heidi Munnelly
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Abstract
The present invention provides methods of imagewise exposing a thermally sensitive composition formed from a nanopaste comprising inorganic nanoparticles, a carrier, and preferably certain polymeric binders. The composition has been applied to a substrate and treated to improve adhesion. Exposure affects the solubility of exposed portions of the applied and treated layer relative to unexposed portions of the applied layer. The imaged layer is then developed on-press with a fountain solution, lithographic ink, or both, to remove the exposed portions or unexposed portions of the layer to form an image in a printing plate.
Claims20
A method for forming an image comprising:
- imagewise exposing a thermally sensitive composition formed from a nanopaste comprising inorganic nanoparticles and a carrier, which composition has been applied and treated as a layer to provide adhesion to a substrate, to affect the solubility of exposed portions of the applied and treated layer relative to unexposed portions of the applied layer;
- and
- developing the applied layer on-press with a fountain solution, lithographic ink, or both, to remove the exposed portions or unexposed portions of the layer to form an image.
A method for forming an image comprising:
- applying onto a surface of a substrate, a thermally sensitive composition comprising a nanopaste that comprises inorganic nanoparticles and a carrier;
- treating the thermally sensitive composition to form a solid layer that adheres to the surface of the substrate;
- imagewise exposing the layer to radiation to affect the solubility of exposed portions of the layer relative to unexposed portions of the layer;
- and
- developing the layer on-press to remove the exposed portions or unexposed portions of the layer to form an image.
A method for forming an image comprising:
- applying onto a surface of a substrate, a thermally sensitive composition comprising a nanopaste that comprises inorganic nanoparticles, a polymeric binder comprising pendant poly(alkylene oxide) side chains, and a carrier;
- treating the thermally sensitive composition to form a solid layer that adheres to the surface of the substrate;
- imagewise exposing the layer on-press to infrared radiation to affect the solubility of exposed portions of the layer relative to unexposed portions of the layer;
- and
- developing the layer on-press to remove the exposed portions or unexposed portions of the layer to form an image.
Dependencies are inferred from the claim text.