US Patent Issued to BROTHER KOGYO on April 15 for "Tank unit, head system, ink supplying system, printing system and printing method" (Japanese Inventors)

ALEXANDRIA, Va., June 5 -- United States Patent no. 12,275,251, issued on April 15, was assigned to BROTHER KOGYO K.K. (Nagoya, Japan).

"Tank unit, head system, ink supplying system, printing system and printing method" was invented by Kohei Watanabe (Nagoya, Japan) and Yuanyuan Deng (Nagoya, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A tank unit includes: a first bottom wall; a second bottom wall positioned above the first bottom wall and defining an opening penetrating in a vertical direction; a first side wall connected to the first and second bottom walls; a tank arranged on an upper surface of the first bottom wall; a liquid level sensor detecting a liquid level of ink inside the tank; a subst...