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US 6,649,240 B2Granted
Optical information recording medium
AssigneeRicoh Company, Ltd.
InventorTakuo Ohishi
Life of this patent
Estimating the term…
Abstract
An optical information recording medium includes a transparent substrate on which a recording layer, a reflection layer, a hydrophobic protective layer, a hydrophobic intermediate layer, and an ink receiving layer are successively overlaid.
Claims5
An optical information recording medium comprising:
- a transparent substrate,
- a recording layer provided on said transparent substrate,
- a reflection layer provided on said recording layer,
- a hydrophobic protective layer provided on said reflection layer,
- a hydrophobic intermediate layer provided on said hydrophobic protective layer, said intermediate layer having a surface hardness of HB or more in terms of pencil hardness, and
- an ink receiving layer provided on said hydrophobic intermediate layer.
3 more elements
Dependencies are inferred from the claim text.