Transparent magnetic recording medium

A silver halide photographic light-sensitive material comprising a transparent magnetic recording layer containing magnetic particles, which comprises at least one light-sensitive silver halide emulsion layer provided on one side of a support opposite to the transparent magnetic recording layer, wherein the light-sensitive material comprises, as an upper layer coated on the magnetic recording layer, a layer that contains at least one sort of spherical inorganic particles which are noncrystalline silica particles, having a Moh's hardness of 6 to 8, the surface of the particles being treated with at least one of primary, secondary, or tertiary amine-series silane coupling agents, and that contains a higher fatty acid ester sliding agent.

A transparent magnetic recording medium comprising a support and at least one magnetic recording layer containing magnetic particles provided thereon, which comprises, as an upper layer coated on the magnetic recording layer, a layer that contains at least one sort of spherical inorganic particles which are noncrystalline silica particles, having a Mohs' hardness of 6 to 8, the surface of the particles being treated with at least one of primary, secondary, or tertiary amine-series silane coupling agents, and that contains a higher fatty acid ester sliding agent that is previously dispersed with a solvent containing cyclohexanrone, to form a dispersion thereof, and said upper layer contains the above-said dispersion of the higher fatty acid ester sliding agent, and at least one of coating solvents selected from a group consisting of diacetone alcohol, 1-acetoxy-2-methoxyethane, ethylene glycoldiacetate, methyl acetoacetate, and ethyl acetoacetate.

A transparent magnetic recording medium comprising a support, a spherical organic high molecular particle, and at least one magnetic recording layer containing magnetic particles provided thereon, which comprises, as an upper layer coated on the magnetic recording layer, a layer that contains at least one spherical inorganic particles which are noncrystalline silica particles having a Mohs' hardness of 6 to 8, the surface of the particles being treated with at least one of primary, secondary, or tertiary amine-series silane coupling agents, and that contains a higher fatty acid ester sliding agent, wherein said transparent magnetic recording layer further contains alumina abrasives having substantially higher particle size than any average height of the surface protrusion of said spherical inorganic particles and said spherical organic high molecular particles.

A silver halide photographic light-sensitive material comprising a transparent magnetic recording layer containing magnetic particles, which comprises at least one light-sensitive silver halide emulsion layer provided on one side of a support opposite to the transparent magnetic recording layer, wherein the light-sensitive material comprises, as an upper layer coated on the magnetic recording layer, a layer that contains at least one sort of spherical inorganic particles which are noncrystalline silica particles, having a Mohs' hardness of 6 to 8, the surface of the particles being treated with at least one of primary, secondary, or tertiary amine-series silane coupling agents, and that contains a higher fatty acid ester sliding agent that is previously dispersed with a solvent containing cyclohexanone, to form a dispersion thereof, and said upper layer contains the above-said dispersion of the higher fatty acid ester sliding agent, and at least one of coating solvents selected from the group consisting of diacetone alcohol, 1-acetoxy-2-methoxyethane, ethylene glycoldlacetate, methyl acetoacetate, and ethyl acetoacetate.

A silver halide photographic light-sensitive material comprising a transparent magnetic recording layer containing magnetic particles, which comprises at least one light-sensitive silver halide emulsion layer provided on one side of a support opposite to the transparent magnetic recording layer, wherein the light-sensitive material comprises, as an upper layer coated on the magnetic recording layer, a layer that contains at least one sort of spherical inorganic particles which are noncrystalline silica particles, having a Mohs' hardness of 6 to 8, the surface of the particles being treated with at least one of primary, secondary, or tertiary amine-series silane coupling agents, and that contains a higher fatty acid ester sliding agent, and spherical organic high molecular particles,

• wherein said transparent magnetic recording layer further contains alumina abrasives having substantially higher particle size than any average height of the surface protrusion of said spherical inorganic particles and said spherical organic high molecular particles.