公开(公告)号：US10732733B2

公开(公告)日：2020-08-04

申请号：US16060303

申请日：2016-12-05

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Shubou Taya ,  Ryohei Miyata ,  Kentaro Hata ,  Masayuki Tsunekawa

IPC: G06F3/041 ,  G06F3/0354 ,  B32B7/00 ,  G06F1/16 ,  G06F3/01 ,  G06F3/044 ,  G06F3/045

Abstract: It is intended to provide a writing sheet for a touch panel pen which can offer favorable writing feeling. The present invention provides a writing sheet for a touch panel pen (A) given below, the writing sheet having a surface whose maximum peak height Rp of a roughness curve and maximum valley depth Rv of the roughness curve defined in JIS B0601: 2001 satisfy the following conditions (A1) and (A2), and whose average wavelength λa calculated according to the following expression (i) from average tilt angle θa and arithmetic average roughness Ra defined in JIS B0601: 2001 satisfies the following condition (A3): 2.0 μm≤Rp≤8.0 μm (A1), 0.8 μm≤Rv≤6.0 μm (A2), 45 μm≤λa≤300 μm (A3), and λa=2π×(Ra/tan(θa)) (i), the touch panel pen having an angled part in at least a portion of a tip region, wherein a volumetric change of the tip region upon application of a vertical load of 100 gf is 1.0% or less.

公开(公告)号：US10908711B2

公开(公告)日：2021-02-02

申请号：US16788810

申请日：2020-02-12

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Shubou Taya ,  Ryohei Miyata ,  Kentaro Hata ,  Masayuki Tsunekawa

IPC: G06F3/041 ,  G06F3/0354 ,  B32B7/00 ,  G06F1/16 ,  G06F3/01 ,  G06F3/044 ,  G06F3/045

Abstract: It is intended to provide a writing sheet for a touch panel pen which can offer favorable writing feeling. The present invention provides a writing sheet for a touch panel pen (A) given below, the writing sheet having a surface whose maximum peak height Rp of a roughness curve and maximum valley depth Rv of the roughness curve defined in JIS B0601: 2001 satisfy the following conditions (A1) and (A2), and whose average wavelength λa calculated according to the following expression (i) from average tilt angle θa and arithmetic average roughness Ra defined in JIS B0601: 2001 satisfies the following condition (A3): 2.0 μm≤Rp≤8.0 μm (A1), 0.8 μm≤Rv≤6.0 μm (A2), 45 μm≤λa≤300 μm (A3), and λa=2π×(Ra/tan(θa)) (i), the touch panel pen having an angled part in at least a portion of a tip region, wherein a volumetric change of the tip region upon application of a vertical load of 100 gf is 1.0% or less.

公开(公告)号：US12214578B2

公开(公告)日：2025-02-04

申请号：US17599418

申请日：2020-03-27

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Ryohei Miyata ,  Kiyotaka Matsui ,  Yoshinari Matsuda ,  Jun Ueda ,  Seiji Shinohara ,  Tomoyuki Horio ,  Tatsuya Kozakai ,  Sho Suzuki

IPC: B32B37/24 ,  B32B7/06 ,  B44C1/17 ,  G02B1/02 ,  G02B1/18 ,  G02F1/1333

Abstract: Provided is a method for manufacturing a transfer sheet which can impart a sufficient function to an adherend. The method for manufacturing a transfer sheet includes performing the following steps (1) and (2) in order: (1) applying a coating liquid for forming a transfer layer onto a release substrate 1 to form a transfer layer comprising at least one functional layer; and (2) laminating a release substrate 2 onto the transfer layer to obtain a transfer sheet A comprising the release substrate 1, the transfer layer and the release substrate 2 in the presented order and having a peel strength 2 between the release substrate 2 and the transfer layer larger than a peel strength 1 between the release substrate 1 and the transfer layer.