Recording medium, image forming process using the recording medium and production process of the recording medium
AssigneeCanon Kabushiki Kaisha
InventorsKatsutoshi Misuda, Masanobu Asaoka
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Abstract
Disclosed herein is a recording medium comprising a base material and an ink-receiving layer containing a particulate material provided on the base material, wherein the particulate material comprises aluminum oxide particles of the γ-crystal structure, the average particle diameter of the aluminum oxide particles is at least 0.21 μm, but at most 1.0 μm, at least 90% of all the aluminum oxide particles have a particle diameter of at most 1.0 μm, and the specular glossiness of the surface of the ink-receiving layer is at least 50% as measured at 75°.
Claims12
A recording medium comprising a base material and an ink-receiving layer containing a particulate material provided on the base material, wherein the particulate material comprises aluminum oxide particles of the γ-crystal structure, the average particle diameter of the aluminum oxide particles is at least 0.21 μm, but at most 1.0 μm, at least 90% of all the aluminum oxide particles have a particle diameter of at most 1.0 μm, and the specular glossiness of the surface of the ink-receiving layer is at least 50% as measured at 75°.
A process for producing a recording medium, which comprises the steps of forming coarse particles of aluminum oxide of the γ-crystal structure by heating and calcining boehmite or pseudoboehmite, removing a coarse particle component by a separating treatment after grinding the formed coarse particles of the aluminum oxide of the γ-crystal structure, and applying a coating formulation comprising the aluminum oxide particles of the γ-crystal structure, from which the coarse particle component has been removed, onto a base material.
Dependencies are inferred from the claim text.