US 2001/0041242 A1 · Optical information medium

Abstract

An optical information medium which has excellent abrasion resistance and which further exhibits sufficient smudge-proof properties is provided. The optical information medium is coated on at least one surface with a film of a silane coupling agent containing a water- or oil-repellent substituent, said silane coupling agent being represented by the following formula (1): R1—Si(X)(Y)(Z) wherein R1 is the water- or oil-repellent substituent; X, Y and Z are independently a monovalent group; and at least one of X, Y and Z is a group which is capable of forming Si—O—Si bond by polycondensation with silanol group; and said medium has an underlying layer formed in contact with said silane coupling agent film, and at least the surface of said underlying layer comprises a compound having a chemical bond represented by the formula (2): M—A wherein M is a metal atom (including a semimetal), and A is a chalcogen atom selected from O, S, Se, and Te, nitrogen atom, or carbon atom.

Claims18

Dependent claims

An optical information medium to be optically recorded and/or read, wherein

said medium is coated on at least one surface with a film of a silane coupling agent containing a water- or oil-repellent substituent, said silane coupling agent being represented by the following formula (1):
R1—Si(X)(Y)(Z) (1)
wherein R1 is the water- or oil-repellent substituent;
X, Y and Z are independently a monovalent group;
and at least one of X, Y and Z is a group which is capable of forming Si—O—Si bond by polycondensation with silanol group;
and
said medium has an underlying layer formed in contact with said silane coupling agent film, and at least the surface of said underlying layer comprises a compound having a chemical bond represented by the formula (2):
M—A (2)
wherein M is a metal atom (including a semimetal), and A is a chalcogen atom selected from O, S, Se, and Te, nitrogen atom, or carbon atom.

6 more elements

An optical information medium to be optically recorded and/or read, wherein

said medium is coated on at least one surface with a film of a silane coupling agent containing a water- or oil-repellent substituent, said silane coupling agent being represented by the following formula (1):
R1—Si(X)(Y)(Z) (1)
wherein R1 is the water- or oil-repellent substituent;
X, Y and Z are independently a monovalent group;
and at least one of X, Y and Z is a group which is capable of forming Si—O—Si bond by polycondensation with silanol group;
and
said medium has an underlying layer formed in contact with said silane coupling agent film, and said underlying layer has a surface comprising a thin layer of a metal (including a semimetal) compound having a thickness of up to 1 μm formed in contact with said silane coupling agent film, and a metal (including a semimetal) compound-containing layer having a thickness thicker than said thin layer is formed in contact with said thin layer and on the side opposite to said silane coupling agent film.

4 more elements

Dependencies are inferred from the claim text.

Optical information medium

Life of this patent

Optical information medium

Life of this patent

Abstract

Claims18