Canon Kabushiki Kaisha

Jun Wang

Takatoshi Tanaka

Takashi Sugiura

Ryo Taguri

Arika Tanaka

Tomokazu Kotake

A recording medium includes a substrate, a first ink-receiving layer, and a second ink-receiving layer serving as a top layer in this order. The first ink-receiving layer contains an amorphous silica having an average particle size of 1.0 &#x3bc;m or more. The second ink-receiving layer contains a colloidal silica. The root-mean-square slope R&#x394;q of roughness profile elements, provided in JIS B 0601:2001, of a surface of the second ink-receiving layer is 0.3 or more.

Recording medium

A recording medium includes a substrate, a first ink-receiving layer, and a second ink-receiving layer adjacent to the first ink-receiving layer in this order. The first ink-receiving layer contains an inorganic particle having an average particle size of 50 nm or less, and the second ink-receiving layer contains an amorphous silica having an average particle size of 3.2 &#x3bc;m or more.

A recording medium includes a substrate and a first ink-receiving layer. The first ink-receiving layer contains an amorphous silica having an average particle size of 1.0 &#x3bc;m or more and an inorganic particle having an average particle size of 50 nm or less. The content of the amorphous silica in the first ink-receiving layer is 30 mass % or more and 95 mass % or less based on a total content of all inorganic particles.

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Yokohama, Japan

Jun Wang