Invention Grant
- Patent Title: Writing feel improving sheet with which a writing feel of writing on paper with a ballpoint pen is obtained
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Application No.: US17312051Application Date: 2019-12-12
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Publication No.: US11891491B2Publication Date: 2024-02-06
- Inventor: Hiroki Hoshino , Tomoo Orui
- Applicant: LINTEC CORPORATION
- Applicant Address: JP Tokyo
- Assignee: LINTEC CORPORATION
- Current Assignee: LINTEC CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Greenblum & Bernstein, P.L.C.
- Priority: JP 18234418 2018.12.14
- International Application: PCT/JP2019/048677 2019.12.12
- International Announcement: WO2020/122172A 2020.06.18
- Date entered country: 2021-06-09
- Main IPC: C08J7/04
- IPC: C08J7/04 ; C09D7/40 ; C09D7/61 ; C08J7/046 ; C08J7/043 ; C09D175/16 ; G06F3/0354 ; C08L33/08 ; C08L35/02 ; G06F3/041

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.
Public/Granted literature
- US20220033600A1 WRITING FEEL IMPROVING SHEET Public/Granted day:2022-02-03
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