US Patent Issued to KYOCERA Document Solutions on July 28 for "Two-component developer" (Japanese Inventors)

ALEXANDRIA, Va., July 28 -- United States Patent no. 12,693,609, issued on July 28, was assigned to KYOCERA Document Solutions Inc. (Osaka, Japan).

"Two-component developer" was invented by Tamotsu Shimizu (Osaka, Japan), Kohei Terasaki (Osaka, Japan), Yuma Uchihashi (Osaka, Japan) and Eriko Takeuchi (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "In a two-component developer, external additive particles of toner particles include resin particles containing a thermoplastic resin. Coat layers of carrier particles contain a coating resin and barium titanate particles. The coating resin includes a silicone resin. The barium titanate particles have a number average primary particle diameter of 100-5...