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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9616695 B1

PDFFull Text
Date of Patent:
Apr. 11, 2017

Filed:

Aug. 07, 2014

Coated printing paper for industrial inkjet printing press

Applicant:

Mitsubishi Paper Mills Limited, Tokyo, JP;

Inventors:

Masanori Nagoshi, Tokyo, JP;

Toru Kaneko, Tokyo, JP;

Atsushi Nakamura, Tokyo, JP;

Assignee:

MITSUBISHI PAPER MILLS LIMITED, Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Betelhem Shewareged

Int. Cl.
CPC ...
B41M 5/00 (2006.01); B41M 5/50 (2006.01); B41M 5/52 (2006.01); D21H 17/67 (2006.01); D21H 19/38 (2006.01); D21H 21/52 (2006.01); D21H 19/64 (2006.01);
U.S. Cl.
CPC ...
B41M 5/50 (2013.01); B41M 5/508 (2013.01); B41M 5/52 (2013.01); B41M 5/5218 (2013.01); B41M 5/5254 (2013.01); D21H 17/675 (2013.01); D21H 19/385 (2013.01); D21H 19/64 (2013.01); D21H 21/52 (2013.01);
Abstract

The present invention provides coated printing paper for industrial inkjet printing presses comprising base paper and, formed on at least one surface of the base paper, a coating layer containing a pigment and a binder as major components, wherein the base paper contains precipitated calcium carbonate which is aggregates of spindle-like precipitated calcium carbonate having an average minor-axis length of 0.3 μm to 0.4 μm and a ratio of average major-axis length/average minor-axis length of 2.0 to 7.0 and which has an average secondary particle diameter of 3.0 μm to 5.5 μm, and further contains at least one material selected from the group consisting of a cationic resin and a water-soluble salt of a polyvalent cation, and the coating layer contains ground calcium carbonate having an average particle diameter of 0.1 μm to 0.28 μm in an amount of 60 parts by mass or greater based on 100 parts by mass of the total pigment contained in the coating layer.

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