US Patent Issued to Hewlett-Packard Development on July 29 for "Toner particle with amorphous polyester resin" (Japanese Inventors)

ALEXANDRIA, Va., July 30 -- United States Patent no. 12,372,892, issued on July 29, was assigned to Hewlett-Packard Development Co. LP (Spring, Texas).

"Toner particle with amorphous polyester resin" was invented by Takahiro Danno (Kanagawa, Japan), Osamu Ieda (Kanagawa, Japan), Keiichi Ishikawa (Kanagawa, Japan), Akinori Terada (Kanagawa, Japan) and Keiji Komoto (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A toner particle comprising: a binder resin; a colorant; and a wax, wherein the binder resin comprises: a first amorphous polyester resin having a pendant group; a second amorphous polyester resin having no pendant group; and a crystalline polyester resin, and wherein a difference betwe...