US Patent Issued to FUJIFILM Business Innovation on Feb. 18 for "Toner for developing electrostatic charge image and electrostatic charge image developer" (Japanese Inventors)

ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,228,883, issued on Feb. 18, was assigned to FUJIFILM Business Innovation Corp. (Tokyo).

"Toner for developing electrostatic charge image and electrostatic charge image developer" was invented by Daisuke Ishizuka (Kanagawa, Japan) and Shinya Sakamoto (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A toner for developing an electrostatic charge image contains toner particles containing an amorphous resin and a crystalline resin. The ratio Qs1/Qf1 is 1.1 or more and 2.0 or less, where Qf1 is the total area of all endothermic peaks detected during the first temperature rise when the toner particles are analyzed by differential scanning calor...