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US 7,678,438 B2Granted
Optical media
AssigneeHewlett-Packard Development Company, L.P.
InventorsKuohua Wu, Andrew L. Van Brocklin
Life of this patent
Estimating the term…
Abstract
One embodiment of an optical medium includes a substrate, a data recording layer positioned on the substrate, a selectively transmissive layer positioned on the data recording layer, and a label recording layer positioned on the selectively transmissive layer, the label recording layer optically accessible at only certain wavelengths through the data recording layer and through the selectively transmissive layer.
Claims27
A medium, comprising:
- a substrate;
- a data recording layer positioned on said substrate;
- a selectively transmissive layer positioned on said data recording layer;
- a human readable label recording layer positioned on said selectively transmissive layer, said label recording layer optically accessible at only certain wavelengths through said data recording layer and through said selectively transmissive layer;
- and
- a focusing layer positioned between said selectively transmissive layer and said label recording layer.
3 more elements
A medium, comprising:
- a substrate;
- means for recording digital data thereon, said means for recording digital data thereon positioned on said substrate;
- means for selectively reflecting light, said means for selectively reflecting light positioned on said means for recording data thereon;
- means for recording human readable visible label information thereon, said means for recording visible label information thereon positioned on said means for selectively reflecting light,
- wherein said means for selectively reflecting light reflects at least seventy percent of a first wavelength of light and transmits at least seventy percent of a second wavelength of light different from said first wavelength of light;
- and
- means for spacing said means for selectively reflecting light from said means for recording label information thereon.
4 more elements
A method of recording a medium label, comprising:
- projecting a label recording light beam through a data recording layer of an optical medium and through a selectively transmissive layer of said optical medium, and impinging it onto said human readable label recording layer of said optical medium;
- and
- projecting said label recording light beam through a focusing layer of said medium and to said label recording layer of said medium, wherein said focusing layer positions said label recording layer on said medium such that said label recording light beam is focused on said label recording layer.
A method of recording visible labeling to a medium, comprising:
- projecting a first light to a first side of said medium, said first light recording data to said medium;
- projecting a second light to said first side of said medium, said second light recording a visible label on said medium, wherein said first light is different from said second light, and wherein said visible label is visible to the naked human eye;
- and
- focusing said second light through a focusing layer positioned on said medium.
1 more element
A medium, comprising:
- a substrate;
- a data recording layer positioned on said substrate;
- a spacing layer positioned on said data recording layer;
- a label recording layer positioned on said spacing layer, said spacing layer positioning said label recording layer a distance from said data recording layer such that a label recording light projected through said data recording layer is focused on said label recording layer;
- and
- a selectively transmissive layer positioned between said data recording layer and said spacing layer.
3 more elements
A method of making a medium, comprising:
- providing a substrate;
- disposing a data recording layer on said substrate;
- disposing a selectively transmissive layer on said data recording layer;
- disposing a human readable label recording layer on said selectively transmissive layer, said label recording layer optically accessible at only certain wavelengths through said data recording layer and through said selectively transmissive layer;
- and
- disposing a focusing layer between said selectively transmissive layer and said label recording layer.
3 more elements
Dependencies are inferred from the claim text.