US Patent Issued to SCREEN HOLDINGS on March 18 for "Ink circulation system and inkjet printing apparatus" (Japanese Inventors)

ALEXANDRIA, Va., March 19 -- United States Patent no. 12,251,941, issued on March 18, was assigned to SCREEN HOLDINGS Co. LTD. (Kyoto, Japan).

"Ink circulation system and inkjet printing apparatus" was invented by Tomonori Yasuda (Kyoto, Japan), Takanori Tsuji (Kyoto, Japan) and Akira Murata (Kyoto, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A technique for making the amount of ink to be calculated appropriate in accordance with the amount of ink to be ejected from heads is provided. An inkjet printing apparatus includes a supply tank, a return tank, a first connecting pipe, a second connecting pipe, a head, a pressure-difference producer, an ejection-amount predictor, and a pressure controller. Th...