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US 2006/0216456 A1Published application
Imaging media including interference layer for generating human-readable marking on optical media
AssigneeHewlett-Packard Development Company, L.P.
InventorsMakarand Gore, James Guo, Anurag Gupta
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Abstract
An optical recording medium, comprises a substrate, and an imaging medium disposed on the substrate, the imaging medium comprising: a marking layer including a thermochromic compound and an interference layer tuned to absorb light having a predetermined wavelength.
Claims22
An optical recording medium, comprising:
- a substrate, and
- an imaging medium disposed on said substrate, said imaging composition comprising:
- a marking layer including a thermochromic compound;
- and
- an interference layer tuned to absorb light having a predetermined wavelength.
2 more elements
A means for providing human-readable and machine-readable marks on an optical recording medium, comprising:
- first means for recording machine-readable marks on said medium in response to an optical signal having a wavelength;
- second means for recording human-readable marks on said medium, said second means including thermochromic means for producing a human-detectable optical change in response to a thermal stimulus and an interference layer for converting an optical signal having said wavelength into heat.
A system, comprising:
- a processor,
- a laser coupled to said processor;
- a data storage medium including a substrate having a first surface that can be marked with machine-readable marks by said laser and a second surface that can be marked with human-readable marks by said laser, said second surface including an imaging medium comprising:
- a marking layer including a thermochromic compound;
- and
- an interference layer tuned to absorb light having a predetermined wavelength.
3 more elements
Dependencies are inferred from the claim text.