Recording medium and image recording process

• US 8,968,844 B2
• Filed: 06/25/2013
• Issued: 03/03/2015
• Est. Priority Date: 06/28/2012
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Noguchi, Tetsuro, Kamo, Hisao, Oguri, Isamu, Yumoto, Shinya
• Primary Examiner(s): Hess, Bruce H
• Application Number:
  US13/926,902
• Publication Number:
  US 20140004263A1
• Time in Patent Office: 616 Days
• Field of Search: 428/32.11, 428 3231- 3234, 347/106
• US Class Current: 428/32.31
• CPC Class Codes: B41M 5/502 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 Class Codes: B41M 5/508 Supports
• CPC Class Codes: B41M 5/52 Macromolecular coatings
• CPC Class Codes: B41M 5/5218 characterised by inorganic additives, e.g. pigments, clays
• CPC Class Codes: B41M 5/5254 characterised by the use of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers

Abstract

A recording medium includes a base and an ink receiving layer. The ink receiving layer contains inorganic particles. The surface of the recording medium has an arithmetic mean roughness of 0.8 μm or more in accordance with JIS B 0601:2001. The surface of the recording medium includes openings having a width of 30 μm or less and a length of 500 μm or less. The number of the openings is 5 or more and 30 or less per 1 mm² of the surface of the recording medium.

Claims

1. A recording medium comprising:

a base; and

an ink receiving layer,

wherein

the ink receiving layer contains inorganic particles;

the recording medium has a surface having an arithmetic mean roughness of 0.8 μ

m or more in accordance with Japanese Industrial Standards (JIS) B 0601;

2001;

the surface of the recording medium includes openings having a width of 30 μ

m or less and a length of 500 μ

m or less; and

the number of the openings is 5 or more and 30 or less per 1 mm² of the surface of the recording medium.

2. The recording medium according to claim 1, wherein the surface of the recording medium has an arithmetic mean roughness of 2.5 μ

m or less in accordance with JIS B 0601;

2001.

3. The recording medium according to claim 1, wherein the surface on the ink receiving layer side of the base is coated with a polyolefin resin.

4. The recording medium according to claim 1, wherein the base has an arithmetic mean roughness of 1.2 μ

m or more and 3.5 μ

m or less in accordance with JIS B 0601;

2001.

5. The recording medium according to claim 1, wherein

the ink receiving layer further contains particles having an average particle diameter of 1 μ

m or more, polyvinyl alcohol, and at least one selected from boric acids and boric acid salts; and

the total amount of the boric acids and the boric acid salts to the amount of the polyvinyl alcohol in the ink receiving layer is 2% by mass or more and 7% by mass or less.

6. An image recording process comprising applying an ink containing a metal phthalocyanine coloring material to a recording medium, wherein

the recording medium is the recording medium according to claim 1.