ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,472,746, issued on Nov. 18, was assigned to KEYENCE Corp. (Osaka, Japan).
"Ink jet printer" was invented by Hajime Hashimoto (Osaka, Japan) and Hideki Yamakawa (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "To prevent a failure of an ink jet printer due to ink clogging in a hollow needle and the vicinity thereof. A continuous ink jet printer includes: an ink tank that stores ink and a solvent as a printing ink; a printing head that performs printing with the printing ink; an ink hollow needle that accesses the ink in an ink cartridge when an ink reservoir receives the ink cartridge; a first ink tube that causes the ink to flow from the ink...