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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 11654708 B1

PDFFull Text
Date of Patent:
May. 23, 2023

Filed:

Mar. 23, 2021

Printing paper

Applicant:

Yupo Corporation, Tokyo, JP;

Inventors:

Nobuhiro Iwatani, Ibaraki, JP;

Tatsuya Suzuki, Ibaraki, JP;

Hideyuki Imai, Ibaraki, JP;

Assignee:

YUPO CORPORATION, Tokyo, JP;

Attorney:

Greenblum & Bernstein, P.L.C.

Primary Examiner:

Hai Vo

Int. Cl.
CPC ...
B41M 5/50 (2006.01); C08L 23/12 (2006.01); C08J 5/18 (2006.01); B32B 27/20 (2006.01); B32B 27/32 (2006.01);
U.S. Cl.
CPC ...
B41M 5/502 (2013.01); B32B 27/205 (2013.01); B32B 27/32 (2013.01); C08J 5/18 (2013.01); C08L 23/12 (2013.01); B32B 2250/03 (2013.01); B32B 2264/303 (2020.08); B32B 2307/75 (2013.01); C08J 2323/12 (2013.01); C08J 2423/12 (2013.01); C08L 2203/16 (2013.01); C08L 2205/025 (2013.01);
Abstract

A printing paper having a base layer, an intermediate layer, and a surface layer, the intermediate layer being arranged adjacent to the base layer and on the base layer, and the surface layer being arranged adjacent to the intermediate layer and on the intermediate layer, the base layer, the intermediate layer, and the surface layer each being a thermoplastic resin film having pores, an average pore size of the surface layer being from 0.2 to 5 μm, an average pore size of the intermediate layer being from 5 to 70 μm and being greater than the average pore size of the surface layer, and an average pore size of the base layer being from 70 to 200 μm and being greater than the average pore size of the intermediate layer.

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