Magnetic recording medium
US5102732A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 3, 1989 |
| Grant date | Apr 7, 1992 |
| Priority date | — |
| Expiry date | Jul 3, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2993
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording medium is disclosed which comprises a non-magnetic support and a magnetic layer comprising ferromagnetic powder, provided on the support. The magnetic layer contains silicon and aluminum, wherein the silicon content of ferromagnetic powder is not less than 0.1% by weight, and the ratio by weight of silicon to aluminum is not less than 3, and magnetic layer contains a binder having an anionic functional group. The magnetic recording medium is excellent in the dispersibility of the ferromagnetic powder of the magnetic layer, and in the balance of magnetic characteristics such as S/N ratio, a squareness ratio, and electromagnetic conversion characteristic, while keeping an excellent running durability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.