Printing coated paper and method for producing a printed material using the same

Patent metadata

Field	Value
Publication number	US-9789722-B2
Application number	US-201314373125-A
Country	US
Kind code	B2
Filing date	Jan 15, 2013
Priority date	Jan 20, 2012
Publication date	Oct 17, 2017
Grant date	Oct 17, 2017

Abstract

Provided is a printing coated paper which is advantageous not only in that the coated paper has offset printability and causes no mottling in the printed area even in ink jet printing, but also in that the coated paper exhibits excellent rubbing resistance with respect to the printed area and excellent print density of a dye ink. The task of the present invention is achieved by a printing coated paper having a coating layer comprised mainly of a pigment and a binder formed on at least one side of a base paper, wherein the base paper is a treated base paper which has been subjected to size press using a treatment solution containing at least one member selected from a cationic resin and a water-soluble multivalent cation salt, wherein the total applied amount per each side of the at least one member selected from a cationic resin and a water-soluble multivalent cation salt, in terms of the solids content, is in the range of from 0.1 to 5.0 g/m 2 , and wherein the at least one pigment in the coating layer is ground calcium carbonate having an average particle diameter of 0.1 to 0.28 μm, wherein the amount of the ground calcium carbonate having an average particle diameter of 0.1 to 0.28 μm contained in the coating layer is in the range of 60 parts by mass or more, relative to 100 parts by mass of the total of the pigment(s) in the coating layer.

First claim

The invention claimed is:

1. A printing coated paper comprising a base paper and a coating layer,
wherein
the coating layer is formed on at least one side of the base paper, and consists essentially of a pigment and a binder,
wherein the base paper is a treated base paper to which a treatment solution containing at least one member selected from a cationic resin and a water-soluble multivalent cation salt has been applied by size press, wherein the total applied amount of the at least one member selected from a cationic resin and a water-soluble multivalent cation salt per each side of the base paper, in terms of the solids content, is in the range of from 0.1 to 5.0 g/m 2 , and
wherein at least one of the pigment in the coating layer is ground calcium carbonate treated with an organic dispersant and having an average particle diameter based on volume of 0.1 to 0.28 μm, wherein the amount of the ground calcium carbonate having an average particle diameter based on volume of 0.1 to 0.28 μm contained in the coating layer is in the range of 60 parts by mass or more, relative to 100 parts by mass of the total of the pigment(s) in the coating layer.

2. A printing coated paper comprising a base paper and a coating layer,
wherein
the coating layer is formed on at least one side of the base paper, and consists essentially of a pigment and a binder,
wherein the base paper is a treated base paper to which a treatment solution containing calcium nitrate that has been applied by size press, wherein the total applied amount of calcium nitrate per each side of the base paper, in terms of the solids content, is in the range of from 0.1 to 5.0 g/m 2 , and wherein at least one of the pigment in the coating layer is ground calcium carbonate treated with an organic dispersant and having an average particle diameter based on volume of 0.1 to 0.28 μm, wherein the amount of the ground calcium carbonate having an average particle diameter based on volume of 0.1 to 0.28 μm contained in the coating layer is in the range of 60 parts by mass or more, relative to 100 parts by mass of the total of the pigment(s) in the coating layer.

Assignees

• Mitsubishi Paper Mills Ltd

Inventors

• Nagoshi Masanori
• Idei Koji
• Nishi Tetsuya
• Kaneko Toru

Classifications

• B05D1/02

  performed by spraying · CPC title

• B41M5/41

  Base layers {supports or substrates} · CPC title

• B41M2205/32

  Thermal receivers · CPC title

• D21H23/56

  Rolls (D21H23/38 takes precedence) · CPC title

• D21H17/74

  of organic and inorganic material · CPC title