ALEXANDRIA, Va., June 6 -- United States Patent no. 12,280,589, issued on April 22, was assigned to Canon K.K. (Tokyo).
"Ink jet recording apparatus and ink jet recording method" was invented by Keiichirou Takeuchi (Tokyo) and Koji Inoue (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "An ink jet recording apparatus according to the present invention includes: a conveying unit that conveys a recording medium; a pretreatment unit that performs corona treatment on a surface of the recording medium; an ink image forming unit configured to be able to form an ink image by applying an ink of at least two colors, the ink containing an anionic pigment; a brightness measuring unit that measures brightness of the...