Magnetic recording medium having characterized magnetic layer and magnetic recording and reproducing device
AssigneeFUJIFILM Corporation
InventorsMegumi Nakano, Eiki Ozawa, Norihito Kasada
Life of this patent
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Abstract
The magnetic recording medium includes a non-magnetic support; and a magnetic layer including a ferromagnetic powder, in which one or more kinds of component selected from the group consisting of a fatty acid and a fatty acid amide are included in a portion of the magnetic layer side on the non-magnetic support, and a C—H derived C concentration calculated from a C—H peak surface area ratio in C1s spectra obtained by X-ray photoelectron spectroscopic analysis performed on a surface of the magnetic layer at a photoelectron take-off angle of 10 degrees, after pressing the magnetic layer at a pressure of 70 atm is 45 atom % or more.
Claims14
A magnetic recording medium comprising:
- a non-magnetic support;
- and
- a magnetic layer including a ferromagnetic powder,
- wherein one or more kinds of component selected from the group consisting of a fatty acid and a fatty acid amide are included in a portion of the magnetic layer side on the non-magnetic support, and
- a C—H derived C concentration calculated from a C—H peak surface area ratio in C1s spectra obtained by X-ray photoelectron spectroscopic analysis performed on a surface of the magnetic layer at a photoelectron take-off angle of 10 degrees, after pressing the magnetic layer at a pressure of 70 atm is 45 atom % or more.
A magnetic recording and reproducing device comprising:
- a magnetic recording medium;
- and
- a magnetic head,
- wherein the magnetic recording medium is a magnetic recording medium comprising:
- a non-magnetic support;
- and
- a magnetic layer including a ferromagnetic powder,
- wherein one or more kinds of component selected from the group consisting of a fatty acid and a fatty acid amide are included in a portion of the magnetic layer side on the non-magnetic support, and
- a C—H derived C concentration calculated from a C—H peak surface area ratio in C1s spectra obtained by X-ray photoelectron spectroscopic analysis performed on a surface of the magnetic layer at a photoelectron take-off angle of 10 degrees, after pressing the magnetic layer at a pressure of 70 atm is 45 atom % or more.
Dependencies are inferred from the claim text.