Magnetic tape, magnetic tape cartridge, and magnetic tape apparatus
AssigneeFUJIFILM Corporation
InventorNorihito Kasada
Life of this patent
Estimating the term…
Abstract
Provided are a magnetic tape including: a non-magnetic support; a magnetic layer including ferromagnetic powder and a binding agent on one surface side of the non-magnetic support; and a back coating layer including non-magnetic powder and a binding agent on the other surface side of the non-magnetic support, in which an isoelectric point of a surface zeta potential of the magnetic layer is equal to or greater than 5.5, and an isoelectric point of a surface zeta potential of the back coating layer is equal to or greater than 4.5, a magnetic tape cartridge, and a magnetic tape apparatus including this magnetic tape.
Claims17
A magnetic tape comprising:
- a non-magnetic support;
- a magnetic layer including ferromagnetic powder and a binding agent on one surface side of the non-magnetic support;
- and
- a back coating layer including non-magnetic powder and a binding agent on the other surface side of the non-magnetic support,
- wherein the isoelectric point of the surface zeta potential of the magnetic layer is equal to or greater than 5.5, and
- the isoelectric point of the surface zeta potential of the back coating layer is greater than or equal to 4.5 and less than or equal to 5.8.
A magnetic tape cartridge comprising:
- a magnetic tape, which comprises:
- a non-magnetic support;
- a magnetic layer including ferromagnetic powder and a binding agent on one surface side of the non-magnetic support;
- and
- a back coating layer including non-magnetic powder and a binding agent on the other surface side of the non-magnetic support,
- wherein the isoelectric point of the surface zeta potential of the magnetic layer is equal to or greater than 5.5, and
- the isoelectric point of the surface zeta potential of the back coating layer is greater than or equal to 4.5 and less than or equal to 5.8.
A magnetic tape apparatus comprising:
- a magnetic head;
- and
- a magnetic tape, which comprises:
- a non-magnetic support;
- a magnetic layer including ferromagnetic powder and a binding agent on one surface side of the non-magnetic support;
- and
- a back coating layer including non-magnetic powder and a binding agent on the other surface side of the non-magnetic support,
- wherein the isoelectric point of the surface zeta potential of the magnetic layer is equal to or greater than 5.5, and
- the isoelectric point of the surface zeta potential of the back coating layer is greater than or equal to 4.5 and less than or equal to 5.8.
Dependencies are inferred from the claim text.