US Patent Issued to KYOCERA Document Solutions on Feb. 17 for "Inkjet ink and inkjet recording apparatus" (Japanese Inventor)

ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,552,950, issued on Feb. 17, was assigned to KYOCERA Document Solutions Inc. (Osaka, Japan).

"Inkjet ink and inkjet recording apparatus" was invented by Toyotsune Inoue (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An inkjet ink contains a quinacridone pigment, a resin, and an aqueous medium. A 50-fold dilution of a supernatant obtained by centrifugating the inkjet ink at 1,050,000 G for 3 hours has a phosphorous concentration of at least 1.0 ppm and no greater than 6.0 ppm. On an ultraviolet-visible absorption spectrum of the supernatant, a first peak appears at a first absorbance of at least 0.16 and no greater than 0.40. The first peak ...