US 11,754,453 B2
Pressure measuring material and method for manufacturing pressure measuring material
Masahiro Hatta, Shizuoka (JP); and Hiroshi Kawakami, Shizuoka (JP)
Assigned to FUJIFILM Corporation, Tokyo (JP)
Filed by FUJIFILM Corporation, Tokyo (JP)
Filed on Jul. 13, 2021, as Appl. No. 17/373,812.
Application 17/373,812 is a continuation of application No. PCT/JP2020/001578, filed on Jan. 17, 2020.
Claims priority of application No. 2019-006244 (JP), filed on Jan. 17, 2019.
Prior Publication US 2021/0341345 A1, Nov. 4, 2021
Int. Cl. G01L 1/24 (2006.01)
CPC G01L 1/247 (2013.01) [G01L 1/242 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A pressure measuring material comprising:
a substrate; and
a pressure-sensitive layer,
wherein the pressure-sensitive layer contains a polymer matrix containing a polymer compound having a molecular weight of 1,000 or more, microcapsules encapsulating an electron-donating dye precursor and a solvent, and an electron-accepting compound, and
the microcapsules and the electron-accepting compound are contained in the polymer matrix.