MAGNETIC TAPE AND METHOD OF MANUFACTURING THE SAME
First Claim
1. A magnetic tape,which comprises on one surface of a nonmagnetic support a magnetic layer comprising ferromagnetic powder and binder, and on the other surface of the nonmagnetic support, a backcoat layer comprising nonmagnetic powder and binder, whereina total thickness of the magnetic tape is less than or equal to 4.80 μ
- m,the backcoat layer comprises one or more components selected from the group consisting of a fatty acid and a fatty acid amide, anda C—
H derived carbon, C, concentration calculated from a C—
H peak area ratio in a C1s spectrum obtained by X-ray photoelectron spectroscopy conducted at a photoelectron take-off angle of 10 degrees on a surface on the backcoat layer side of the magnetic tape ranges from 35 to 60 atom %.
1 Assignment
0 Petitions
Accused Products
Abstract
The magnetic tape has on one surface of a nonmagnetic support a magnetic layer containing ferromagnetic powder and binder, and on the other surface of the nonmagnetic support, a backcoat layer containing nonmagnetic powder and binder, wherein the total thickness of the magnetic tape is less than or equal to 4.80 μm, the backcoat layer contains one or more components selected from the group consisting of a fatty acid and a fatty acid amide, and a C—H derived carbon, C, concentration calculated from a C—H peak area ratio in a C1s spectrum obtained by X-ray photoelectron spectroscopy conducted at a photoelectron take-off angle of 10 degrees on a surface on the backcoat layer side of the magnetic tape ranges from 35 to 60 atom %.
-
Citations
16 Claims
-
1. A magnetic tape,
which comprises on one surface of a nonmagnetic support a magnetic layer comprising ferromagnetic powder and binder, and on the other surface of the nonmagnetic support, a backcoat layer comprising nonmagnetic powder and binder, wherein a total thickness of the magnetic tape is less than or equal to 4.80 μ - m,
the backcoat layer comprises one or more components selected from the group consisting of a fatty acid and a fatty acid amide, and a C—
H derived carbon, C, concentration calculated from a C—
H peak area ratio in a C1s spectrum obtained by X-ray photoelectron spectroscopy conducted at a photoelectron take-off angle of 10 degrees on a surface on the backcoat layer side of the magnetic tape ranges from 35 to 60 atom %. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- m,
-
8. A method of manufacturing a magnetic tape,
wherein the magnetic tape is a magnetic tape comprising on one surface of a nonmagnetic support a magnetic layer comprising ferromagnetic powder and binder, and on the other surface of the nonmagnetic support, a backcoat layer comprising nonmagnetic powder and binder, wherein a total thickness of the magnetic tape is less than or equal to 4.80 μ - m,
the backcoat layer comprises one or more components selected from the group consisting of a fatty acid and a fatty acid amide, and a C—
H derived carbon, C, concentration calculated from a C—
H peak area ratio in a C1s spectrum obtained by X-ray photoelectron spectroscopy conducted at a photoelectron take-off angle of 10 degrees on a surface on the backcoat layer side of the magnetic tape ranges from 35 to 60 atom %, and whereinthe method comprises at least forming the magnetic layer and forming the backcoat layer, and the forming of the backcoat layer comprises; a coating step of forming a coating layer by coating a backcoat layer forming composition comprising one or more components selected from the group consisting of a fatty acid and a fatty acid amide, nonmagnetic powder, binder, and solvent on a surface of a nonmagnetic support; and a heating and drying step of drying the coating layer by a heat treatment; with a cooling step of cooling the coating layer being conducted between the coating step and the heating and drying step. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
- m,
Specification