ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,393,131, issued on Aug. 19, was assigned to CANON K.K. (Tokyo).
"Toner" was invented by Takashi Kenmoku (Mishima, Japan), Kenta Kamikura (Yokohama, Japan) and Yuzo Seino (Gotemba, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A toner containing a toner particle, wherein, when a dielectric loss tangent measured at a frequency of 10 kHz in an impedance measurement on the toner in an environment having a temperature of 50deg C. and a relative humidity of 50% RH is designated by tan Delta50deg C.(1), and a dielectric loss tangent measured at a frequency of 10 kHz in an impedance measurement on the toner in an environment having a temperature of 30deg...