Recording medium
AssigneeCanon Kabushiki Kaisha
InventorTakatoshi Tanaka
Life of this patent
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Abstract
The recording medium includes: an absorbent substrate; and an ink receiving layer provided on the absorbent substrate. The dry coating amount of the ink receiving layer is 6.0 g/m2 or more to 11.0 g/m2 or less, arithmetic average roughness Ra1 (μm) of a surface of the absorbent substrate satisfies a relationship of Expression (1) below, arithmetic average roughness Ra1 and arithmetic average roughness Ra2 (μm) of a surface of the ink receiving layer satisfy a relationship of Expression (2) below, and an average length RSm1 (mm) of a roughness curve element of the surface of the absorbent substrate and an average length RSm2 (mm) of a roughness curve element of the surface of the ink receiving layer satisfy a relationship of Expression (3) below. Ra1≥5.0 μm (1) Ra2/Ra1≥0.87 (2) RSm2/RSm1≤1.40 (3)
Claims8
A recording medium comprising:
- an ab sorb ent substrate;
- and
- an ink receiving layer provided on the absorbent substrate and containing an inorganic particle and a binder,
- wherein a dry coating amount of the ink receiving layer is 6.0 g/m2 or more to 11.0 g/m2 or less,
- wherein an arithmetic average roughness Ra1 (μm) of a surface of the absorbent substrate defined by ISO 4287:1997 satisfies a relationship of Expression (1) below,
- wherein the arithmetic average roughness Ra1 and an arithmetic average roughness Ra2 (μm) of a surface of the ink receiving layer defined by ISO 4287:1997 satisfy a relationship of Expression (2) below,
- wherein an average length RSm1 (mm) of a roughness curve element of the surface of the absorbent substrate defined by ISO 4287:1997 and an average length RSm2 (mm) of a roughness curve element of the surface of the ink receiving layer defined by ISO 4287:1997 satisfy a relationship of Expression (3) below, and
- wherein the arithmetic average roughness Ra2 satisfies a relationship of Expression (8) below:
- Ra1≥5.0 μm (1);
- Ra2/Ra1≥0.87 (2);
- RSm2/RSm1≤1.40 (3);
- and
- 4.4 μm≤Ra2≤10.5 μm (8).
Dependencies are inferred from the claim text.