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US 9,886,969 B2Granted
Gramophone record
AssigneeUlvac Taiwan Inc
InventorsYun-Hsiang Wei, Chiang-Yao Chen, Tung-Jung Wu, Li-Yen Chen
Life of this patent
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Abstract
A gramophone record includes a main body and a cladding layer. The main body is made of a polymeric material, and has a base surface and an extending surface which extends downward from the base surface. The extending surface defines a continuous spiral groove in the main body. The cladding layer is formed on the extending surface, and has a Hardness Rockwell C (HRC) of not less than 37.
Claims14
A gramophone record, comprising:
- a main body made of a polymeric material, and having a base surface, and an extending surface extending downward from said base surface, said extending surface defining a spiral groove in said main body;
- a cladding layer formed on said extending surface and having a Hardness Rockwell C (HRC) of not less than 37;
- and
- a buffer layer formed between said main body and said cladding layer, said buffer layer being made from a material selected from the group consisting of a metal material, an alloy of said metal material, an oxide of said metal material, and a nitride of said metal material, silicon, silicon alloy, silicon oxide, and silicon nitride,
- wherein said metal material is selected from the group consisting of vanadium, molybdenum, and chromium.
2 more elements
A gramophone record, comprising:
- a main body made of a polymeric material, and having a base surface, and an extending surface extending downward from said base surface, said extending surface defining a spiral groove in said main body;
- and
- a cladding layer formed on said base surface and said extending surface and having a Hardness Rockwell C (HRC) of not less than 37;
- wherein said cladding layer is made of an alloy of a metal selected from the group consisting of nickel, vanadium, titanium, molybdenum, chromium, tungsten, tantalum, and aluminum, the atomic percentage of said metal present in said alloy being not less than 50%.
1 more element
A gramophone record, comprising:
- a main body made of a polymeric material, and having a base surface, and an extending surface extending downward from said base surface, said extending surface defining a spiral groove in said main body;
- a cladding layer formed on said base surface and said extending surface and having a Hardness Rockwell C (HRC) of not less than 37;
- and
- a protective layer formed on the surface of said cladding layer and opposite to said main body, said protective layer being made of a fluorine-containing compound or silicon dioxide nanoparticles;
- wherein said cladding layer is made of a material selected from the group consisting of a metal material, an alloy, a metal oxide, a metal nitride, and a metal carbide, and wherein
- said metal material is selected from the group consisting of nickel, vanadium, titanium, molybdenum, chromium, tungsten, tantalum, aluminum, and combinations thereof,
- said alloy is an alloy of a metal selected from the group consisting of nickel, vanadium, titanium, molybdenum, chromium, tungsten, tantalum, and aluminum,
- said metal oxide is selected from the group consisting of indium oxide, tin oxide, zinc oxide, nickel oxide, vanadium oxide, titanium oxide, chromium oxide, tungsten oxide, tantalum oxide, and aluminum oxide,
- said metal nitride is selected from the group consisting of nickel nitride, vanadium nitride, titanium nitride, chromium nitride, tungsten nitride, tantalum nitride, and aluminum nitride, and
- said metal carbide is selected from the group consisting of nickel carbide, vanadium carbide, titanium carbide, chromium carbide, tungsten carbide, tantalum carbide, and aluminum carbide.
7 more elements
Dependencies are inferred from the claim text.