Claims
- 1. A process for improving the abrasion properties and durability of a magnetic recording medium consisting of a nonmagnetic base and a magnetic layer firmly bonded thereto, which comprises: (1) applying a dispersion of inorganic particles having a Mohs' hardness of not less than 5 and a particle size from 0.01 to 3.0 .mu.m in a solvent, the concentration of the inorganic particles in the dispersion being from 0.02 to 0.25% by weight based on the solvent, to the surface of the magnetic layer, and (2) drying the dispersion to remove the solvent and to deposit the inorganic particles in the pores, valleys and pits in the surface of the magnetic layer.
- 2. A process as claimed in claim 1, wherein the concentration of the inorganic particles in the dispersion is from 0.02 to 0.1% by weight based on the solvent.
- 3. A process as claimed in claim 1, wherein the dispersion consists of the inorganic particles, a dispersant, an organic polymer and a volatile solvent.
Priority Claims (1)
Number |
Date |
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3522681 |
Jun 1985 |
DEX |
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Parent Case Info
This application is a continuation of application Ser. No. 878,219, filed on June 23, 1986 now abandoned.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
3476596 |
Carroll |
Nov 1969 |
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4423452 |
Kajimoto et al. |
Dec 1983 |
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1572438 |
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3328719 |
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1260873 |
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GBX |
Non-Patent Literature Citations (1)
Entry |
Friedman et al, IBM Tech. Dis. Bull., vol. 9, No. 7, 12-66, Lubricants for Magnetic Recording Media p. 779. |
Continuations (1)
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Number |
Date |
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Parent |
878219 |
Jun 1986 |
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