US 12,078,477 B2
Measurement device and image forming apparatus
Kenta Ogata, Kanagawa (JP); and Kouhei Yukawa, Kanagawa (JP)
Assigned to FUJIFILM Business Innovation Corp., Tokyo (JP)
Filed by FUJIFILM Business Innovation Corp., Tokyo (JP)
Filed on Aug. 25, 2021, as Appl. No. 17/412,207.
Claims priority of application No. 2021-085625 (JP), filed on May 20, 2021.
Prior Publication US 2022/0373326 A1, Nov. 24, 2022
Int. Cl. G01B 17/02 (2006.01); G01N 29/07 (2006.01)
CPC G01B 17/02 (2013.01) [G01N 29/07 (2013.01); G01N 2291/02854 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A measurement device comprising:
a first measurement unit, disposed at a first opposing position facing a portion of a sheet-like measurement target, that measures a first physical property of the measurement target by causing the measurement target to vibrate with an ultrasonic wave, wherein the first physical property includes a basis weight of the measurement target;
a second measurement unit, disposed at a second opposing position facing another portion of the measurement target in a state in which the first measurement unit is facing the first portion, that pinches and restrains the other portion in a thickness direction and measures a second physical property other than the first physical property of the measurement target, wherein the second physical property includes a sheet resistance value of the measurement target; and
a disposed unit disposed between the first measurement unit and the second measurement unit in an intersecting direction with respect to the thickness direction of the measurement target.