MAGNETIC RECORDING MEDIUM
First Claim
1. A magnetic recording medium comprising:
- a non-magnetic support; and
a magnetic layer including particles of at least one kind of epsilon type iron oxide-based compound selected from the group consisting of ε
-Fe2O3 and a compound represented by Formula (1), an abrasive, and a binding agent, at least on one surface of the non-magnetic support,wherein an average equivalent circle diameter of the particles of the epsilon type iron oxide-based compound is 7 nm to 18 nm,an average equivalent circle diameter of the abrasive in a plan view of the magnetic layer is 20 nm to 1,000 nm, anda coefficient of variation of the equivalent circle diameter of the abrasive is 30% to 60%,
ε
-AaFe2-aO3
(1)in Formula (1), A represents at least one kind of metal element other than Fe and a satisfies a relationship of 0<
a<
2.
1 Assignment
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Accused Products
Abstract
Provided is a magnetic recording medium including: a non-magnetic support; and a magnetic layer including particles of at least one kind of epsilon type iron oxide-based compound selected from the group consisting of ε-Fe2O3 and a compound represented by Formula (1), an abrasive, and a binding agent, at least on one surface of the non-magnetic support, in which an average equivalent circle diameter of the particles of the epsilon type iron oxide-based compound is 7 nm to 18 nm, an average equivalent circle diameter of the abrasive in a plan view of the magnetic layer is 20 nm to 1,000 nm, and a coefficient of variation of the equivalent circle diameter of the abrasive is 30% to 60%. In Formula (1), A represents at least one kind of metal element other than Fe and a satisfies a relationship of 0<a<2.
ε-AaFe2-aO3 (1)
20 Citations
6 Claims
-
1. A magnetic recording medium comprising:
-
a non-magnetic support; and a magnetic layer including particles of at least one kind of epsilon type iron oxide-based compound selected from the group consisting of ε
-Fe2O3 and a compound represented by Formula (1), an abrasive, and a binding agent, at least on one surface of the non-magnetic support,wherein an average equivalent circle diameter of the particles of the epsilon type iron oxide-based compound is 7 nm to 18 nm, an average equivalent circle diameter of the abrasive in a plan view of the magnetic layer is 20 nm to 1,000 nm, and a coefficient of variation of the equivalent circle diameter of the abrasive is 30% to 60%,
ε
-AaFe2-aO3
(1)in Formula (1), A represents at least one kind of metal element other than Fe and a satisfies a relationship of 0<
a<
2. - View Dependent Claims (2, 3, 4, 5, 6)
-
Specification