Ink jet recording medium and image recording method
AssigneeCanon Kabushiki Kaisha
InventorsOlivia Herlambang, Yoshiyuki Nagase, Masaya Asao, Takeshi Ota
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Abstract
An ink let recording medium includes a substrate and an ink-receiving layer as the uppermost surface layer, with the ink-receiving layer containing inorganic particles mainly including alumina particles, and a binder mainly containing a water-insoluble resin, wherein the content of the inorganic particles is 50% by mass or more relative to the total mass of the ink-receiving layer and the surface roughness (Ra) of the ink-receiving layer measured with a scanning probe microscope is in the range of 30 nm to 150 nm.
Claims14
An ink jet recording medium comprising:
- a substrate;
- and
- an ink-receiving layer being the uppermost surface layer,
- wherein the ink-receiving layer contains:
- a binder mainly containing a water-insoluble resin, and
- inorganic particles mainly including alumina particles,
- wherein the content of the inorganic particles is 50% by mass or more relative to the total mass of the ink-receiving layer,
- wherein the surface roughness (Ra) of the ink-receiving layer measured with a scanning probe microscope is in the range of 30 nm to 150 nm,
- wherein a surface of the recording medium has depressions represented by black when an image of the surface of the recording medium taken with a scanning electron microscope is binarized, and
- wherein a number of depressions having a circle equivalent diameter in the range of 240 nm to 800 nm per unit area of 100 μm2 of the surface of the recording medium is 50 to 300.
An image recording method comprising:
- ejecting an aqueous pigment ink containing a pigment onto an ink jet recording medium from a recording head,
- wherein the ink jet recording medium comprises:
- a substrate;
- and
- an ink-receiving layer being the uppermost surface layer,
- wherein the ink-receiving layer contains:
- a binder mainly containing a water-insoluble resin, and
- inorganic particles mainly including alumina particles,
- wherein the content of the inorganic particles is 50% by mass or more relative to the total mass of the ink-receiving layer,
- wherein the surface roughness (Ra) of the ink-receiving layer measured with a scanning probe microscope is in the range of 30 nm to 150 nm,
- wherein a surface of the recording medium has depressions represented by black when an image of the surface of the recording medium taken with a scanning electron microscope is binarized, and
- wherein a number of depressions having a circle equivalent diameter in the range of 240 nm to 800 nm per unit area of 100 μm2 of the surface of the recording medium is 50 to 300.
Dependencies are inferred from the claim text.