ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,459,257, issued on Nov. 4, was assigned to Seiko Epson Corp. (Tokyo).
"Printing device and printing method" was invented by Takuma Hayashi (Nagano, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The print head 10 includes a nozzle region NA1 in which a distance between a nozzle array 23Y and a nozzle array 23C is a distance D1 and a nozzle region NA2 in which a distance between a nozzle array 23Y and a nozzle array 23C is a distance D2. When a ratio of sizes of a plurality of ink droplets ejected from nozzles of a nozzle region NA1 is defined as a first ratio and a ratio of sizes of a plurality of ink droplets ejected from nozzles of a nozzle regio...