Recording medium with increased scratch and water resistance

Patent metadata

Field	Value
Publication number	US-9802434-B2
Application number	US-201615069687-A
Country	US
Kind code	B2
Filing date	Mar 14, 2016
Priority date	Mar 16, 2015
Publication date	Oct 31, 2017
Grant date	Oct 31, 2017

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.

12. 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,

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.

13. A recording medium comprising:
a substrate; and
an ink-receiving layer,
wherein the ink-receiving layer
contains an inorganic particle and a binder, and
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.

Assignees

• Canon Kk

Inventors

• Nagase Yoshiyuki
• Ota Takeshi

Classifications

• B41M5/5281

  Polyurethanes or polyureas · 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

• B41M5/52

  Macromolecular coatings · CPC title

• B41M5/50

  Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording {(printing on organic plastics using a printer's form B41M1/30; printing on pre-treated paper with a printer's form B41M1/36)} · 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