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US 7,125,504 B2Granted
Optical switch microfilms
AssigneeEastman Kodak Company
InventorMarcus S. Bermel
Life of this patent
Estimating the term…
Abstract
A method of making a light diffusing microfilm, includes providing a carrier substrate; coating a coating fluid onto the carrier substrate; drying the coating fluid on the carrier substrate to form a releasable light diffusing microfilm on the carrier substrate; and separating the light diffusing microfilm from the carrier substrate.
Claims28
A method of making a light diffusing microfilm, consisting essentially of:
- providing a carrier substrate;
- coating a coating fluid onto the carrier substrate;
- drying the coating fluid on the carrier substrate to form a releasable light diffusing microfilm on the carrier substrate, winding the composite of carrier and light diffusing microfilm into a roll, storing the roll of light diffusing microfilm on the carrier substrate and separating it from the carrier substrate prior to use wherein the step of coating is a simultaneous multi-layer coating process including a light scattering layer and wherein the light scattering layer includes light scattering particles and the multi-layer coating process includes a layer over the light scattering layer to control the texture of the surface of the light diffusing microfilm.
A method of making a microfilm having a textured surface, comprising:
- providing a carrier substrate;
- coating a film forming coating fluid onto the carrier substrate, the film forming coating liquid containing solid particles;
- drying the film forming coating fluid on the carrier substrate to form a releasable microfilm having a textured surface defined by the solid particles, winding the composite of carrier and microfilm into a roll, storing the microfilm on the carrier substrate and separating it from the carrier substrate prior to use, wherein the step of coating the film is a simultaneous multi-layer coating process including a particle free uppermost layer to control the texture of the surface of the microfilm.
Dependencies are inferred from the claim text.