METHOD FOR MEASURING INK CONCENTRATION

摘要

PROBLEM TO BE SOLVED: To easily measure the concentration of a water-based pigment ink to be used in real time.

SOLUTION: The ultrasonic propagation speed between prescribed distances of the plurality of water-based pigment inks in which ink concentration differs is measured as a comparison value, the propagation speed of these ultrasonic waves is measured with the water-based pigment ink whose ink concentration is unknown under the same conditions as the comparison value, and the measurement values are compared with the comparison value for determining the ink concentration.

COPYRIGHT: (C)2006,JPO&NCIPI