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.

Date of Patent:
Feb. 06, 2024

Filed:

Dec. 12, 2019
Applicant:

Lintec Corporation, Tokyo, JP;

Inventors:

Hiroki Hoshino, Tokyo, JP;

Tomoo Orui, Tokyo, JP;

Assignee:

LINTEC CORPORATION, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 7/04 (2020.01); C09D 7/40 (2018.01); C09D 7/61 (2018.01); C08J 7/046 (2020.01); C08J 7/043 (2020.01); C09D 175/16 (2006.01); G06F 3/0354 (2013.01); C08L 33/08 (2006.01); C08L 35/02 (2006.01); G06F 3/041 (2006.01);
U.S. Cl.
CPC ...
C08J 7/042 (2013.01); C08J 7/043 (2020.01); C08J 7/046 (2020.01); C09D 7/61 (2018.01); C09D 7/69 (2018.01); C09D 7/70 (2018.01); C09D 175/16 (2013.01); G06F 3/03545 (2013.01); C08J 2367/02 (2013.01); C08J 2475/16 (2013.01); C08L 33/08 (2013.01); C08L 35/02 (2013.01); G06F 3/041 (2013.01);
Abstract

A writing feel improving sheet comprising a base material and a writing feel improving layer with which a touch pen is brought into contact, wherein when a touch pen having a pen tip of 0.5 mm diameter is used to bring the pen tip into contact with a surface of the writing feel improving layer with which the touch pen is brought into contact and the touch pen is then linearly slid at a speed of 1.6 mm/second while applying a load of 200 g to the touch pen and maintaining an angle formed between the touch pen and the surface at 45°, a difference between a maximum value and a minimum value of frictional force generated between the pen tip and the surface is 80 mN or more and 300 mN or less, wherein the frictional force is measured between a point at which a sliding distance is 10 mm and a point at which the sliding distance is 100 mm. The writing feel improving sheet makes it possible to well reproduce the writing feel experienced when writing on paper with a ballpoint pen.


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