ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,699,025, issued on Aug. 4, was assigned to SEMES Co. LTD. (Cheonan-si, South Korea).
"Head life evaluation apparatus and method" was invented by Won-Yong Jin (Cheonan-si, South Korea), Suk-Won Jang (Pyeongtaek-si, South Korea), Jae-Duck Lee (Seongnam-si, South Korea) and Hosang Lee (Asan-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are a head life evaluation apparatus and method capable of evaluating lifespans of nozzles by using a plurality of chambers having different environments, the head life evaluation apparatus including a head block including at least one first nozzle for ejecting a treatment liquid in an inkjet manner,...