Recording medium with increased scratch and water resistance

Patent metadata

Field	Value
Publication number	US-2016271986-A1
Application number	US-201615069687-A
Country	US
Kind code	A1
Filing date	Mar 14, 2016
Priority date	Mar 16, 2015
Publication date	Sep 22, 2016
Grant date	—

Abstract

A recording medium includes a substrate and an ink-receiving layer, wherein the ink-receiving layer contains an inorganic particle and a binder, and does not contain any water-soluble resin or contains a water-soluble resin such that a ratio of the content of the water-soluble resin to the content of the binder in the ink-receiving layer is 20% by mass or less, the binder contains at least one component selected from the group consisting of acrylic resins, polycarbonate-modified urethane resins, and polyether-modified urethane resins, and, for the recording medium, a ratio of a total pore volume in a pore radius range of 7 nm or more and 20 nm or less to a total pore volume in a pore radius range of 0 nm or more and 20 nm or less is 25% by volume or less.

First claim

What is claimed is:

1 . A recording medium comprising:
a substrate; and an ink-receiving layer, wherein the ink-receiving layer
contains an inorganic particle and a binder, and
does not contain any water-soluble resin or contains a water-soluble resin such that a ratio of a content of the water-soluble resin to a content of the binder in the ink-receiving layer is 20% by mass or less,
the binder contains at least one component selected from the group consisting of acrylic resins, polycarbonate-modified urethane resins, and polyether-modified urethane resins, and for the recording medium, a ratio of a total pore volume in a pore radius range of 7 nm or more and 20 nm or less to a total pore volume in a pore radius range of 0 nm or more and 20 nm or less is 25% by volume or less.

2 . The recording medium according to claim 1 , wherein, for the inorganic particle, a ratio of a total pore volume in a pore radius range of 7 nm or more and 20 nm or less to a total pore volume in a pore radius range of 0 nm or more and 20 nm or less is 25% by volume or less.

3 . The recording medium according to claim 1 , wherein the binder containing at least one resin selected from a group consisting of the acrylic resins, polycarbonate-modified urethane resins, and polyether-modified urethane resins is a cationic resin.

4 . The recording medium according to claim 1 , wherein the binder containing at least one resin selected from a group consisting of the acrylic resins, polycarbonate-modified urethane resins, and polyether-modified urethane resins is a nonionic resin.

5 . The recording medium according to claim 1 , wherein the binder contains at least one resin selected from the group consisting of the acrylic resins, the polycarbonate-modified urethane resins and the polyether-modified urethane resins, and the at least one resin has a glass transition temperature of 20° C. or less.

6 . The recording medium according to claim 1 , wherein the binder further contains an ethylene-vinyl acetate copolymer.

7 . The recording medium according to claim 1 , wherein the inorganic particle is a wet-process silica particle.

8 . The recording medium according to claim 1 , wherein the ink-receiving layer contains a polyvalent metal salt.

9 . The recording medium according to claim 1 , wherein, for the recording medium, a total pore volume in a pore radius range of 2 nm or more and 10 nm or less is 0.2 ml/g or more.

10 . The recording medium according to claim 1 , wherein the inorganic particle has an oil absorption of 150 ml/100 g or more and 240 ml/100 g or less.

11 . The recording medium according to claim 1 , wherein the inorganic particle has a BET specific surface area of 380 m 2 /g or more.

Assignees

• Canon Kk

Inventors

• Nagase Yoshiyuki
• Oota Takeshi

Classifications

• B41M5/5218 Primary

  characterised by inorganic additives, e.g. pigments, clays · CPC title

• B41M5/502 Primary

  characterised by structural details, e.g. multilayer materials (supports, backcoats or intermediate layers for thermal dye transfer donor and receiver sheets B41M5/41, B41M5/42) · CPC title

• B41M5/5281

  Polyurethanes or polyureas · CPC title

• B41M5/5272

  Polyesters; Polycarbonates · CPC title

• B41M5/5254

  characterised by the use of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers · CPC title