Canon Kabushiki Kaisha

Teruaki Okuda

Kenji Suzuki

Toru Nagata

Hiroshi Ochiai

Yoshinari Yasui

Yoshiyuki Nagase

Takeshi Hara

Nobuo Tokutake

Kunio Takada

Asako Watanabe

Hirokazu Hyakuda

Takeshi Oota

Mitsuo Miyasaka

Shuichiro Riku

Junichi Nagayama

An ink jet recording medium comprising a substrate and an ink receiving layer which is provided on at least one surface of the substrate and contains inorganic fine particles having an average secondary particle size of 1-4 &#x3bc;m as measured by a Coulter counter method in an amount of 0.2-2.0 g/min terms of solid content mass. The ink receiving layer satisfies the following conditions with respect to a pore distribution curve as determined by a nitrogen adsorption method: (1) total pore volume in a pore size range of 10-30 nm is 0.25 ml/g or more, (2) total pore volume in a pore size range of 30-70 nm is 0.1 ml/g or more, and (3) volume ratio of the total pore volume in the pore size range of 10-30 nm to the total pore volume in the pore size range of 30-70 nm is from 1:0.4 to 1:1.

Ink jet recording medium and ink jet recording method

A high quality ink jet recording medium with a printed image non-vulnerable and excellent in scratch resistance is obtained with an ink jet recording using a water pigment ink. An ink jet recording medium having a substrate and an ink receiving layer including an inorganic particle and a binder on the substrate is provided. A surface of the ink receiving layer has (a) a projected valley portion depth (Rvk) of not less than 20 nm and not more than 100, (b) an arithmetic average roughness (Ra) of not less than 5 nm and not more than 100 nm, and (c) an average spacing (S) of local peaks of not more than 1.0 &#x3bc;m.

A laminating method for forming a laminated layer in the form of a transparent film on a surface of an image on a printed object includes the steps of transferring a laminate having a laminated layer and a heat resistive base material layer to the surface of the printed object for laminating to form a laminated printed object, and a rear edge peeling step of peeling off the heat resistive base material layer from a rear edge portion of the laminated printed object by exerting an active force on the rear edge of the printed object in the carrying direction. Subsequently to the rear edge peeling step, a front edge peeling step peels off the heat resistive base material layer from a front edge of the laminated printed object.

Laminating method and laminating apparatus

A recording medium has a base member and an ink-receiving layer containing amorphous silica provided on the base member. The ink-receiving layer comprises a lower layer and an upper layer formed successively in lamination on the base member. The lower layer contains an anionic group, and the upper layer contains a cationic group.

Recording medium and image formation employing the same

In a process for producing a substrate for optical disks, first a disk-shaped substrate is formed with polycarbonate with such gradient distribution of double refraction that the value of double refraction is in a range from -10 to -30 nm in the vicinity of the external periphery of the substrate and is in a range from +10 to +30 nm in the vicinity of the center thereof, and then thus formed substrate is annealed.

Process for producing substrate for optical disk by annealing substrate

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Tokyo, Japan

Teruaki Okuda