ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,533,899, issued on Jan. 27, was assigned to Seiko Epson Corp. (Tokyo).
"Liquid ejection device and carriage" was invented by Kaoru Koike (Matsumoto, Japan) and Keigo Takishima (Matsumoto, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A liquid ejection device 1 includes a head 101 for ejecting liquid, a board case 120 for housing a board unit 123 for driving the head 101, a first fan 121 fixed to the board case 120 and for sending airflow into the board case 120, a carriage 100 for housing therein the head 101 and the board case 120, and a second fan 102 for sending airflow taken from outside the carriage 100 into the carriage 100, wherein the boa...