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公开(公告)号：US20230311559A1
公开(公告)日：2023-10-05
申请号：US18127345
申请日：2023-03-28
Applicant: NITTO DENKO CORPORATION
Inventor： Saori YAMAMOTO , Masahiro YAEGASHI , Yuji TOYOTA
Abstract: A writing board set includes a writing board and a writing utensil containing ink. The writing board reflects back, when unpolarized light is incident on its surface at a viewer's side, polarized light which is parallel to a first direction and which has a degree of polarization of 95% or more. Ld*, ad*, and bd* are values of L*, a*, and b* as obtained by irradiating the surface of the writing board with light that has been transmitted through a polarizing layer having a transmission axis which is orthogonal to the first direction, and measuring total reflectance through spectrophotometry. Li*, ai*, and bi* are values of L*, a*, and b* as obtained by irradiating the ink having been introduced onto a surface of a glass panel with unpolarized light, and measuring total reflectance through spectrophotometry. A color difference ΔE*ab as defined by eq. (1) is 19 or less:
ΔE*ab[(Li*−Ld*)2+(ai*−ad*)2+(bi*−bd*)2]1/2 (1).-
公开(公告)号：US20200025443A1
公开(公告)日：2020-01-23
申请号：US16499482
申请日：2018-04-02
Applicant: NITTO DENKO CORPORATION
Inventor： Chie MATSUMOTO , Takao YOSHIKAWA , Takuya SHISHIDO , Yuji TOYOTA , Sachiko SAKAMOTO , Yoshimitsu SHIMOMURA , Mitsuhiko HORI
Abstract: The present invention aims to provide a method and an apparatus for producing a lyophilized body, each of which can achieve energy saving, low cost, and a reduction in processing time and can provide a lyophilized body less damaged by a freezing process and a drying process. The present invention relates to a method for lyophilizing a substance using an electromagnetic wave, and the lyophilization method includes freezing the substance under irradiation of at least an electromagnetic wave and reduced-pressure drying the frozen substance under irradiation of at least an electromagnetic wave.
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