ALEXANDRIA, Va., July 14 -- United States Patent no. 12,681,409, issued on July 14, was assigned to Sharp K.K. (Sakai City, Japan).
"Development device and image forming device that prevents toner leakage" was invented by Shuichi Akedo (Sakai City, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A development device includes a development tank that stores a developer, a first screw and a second screw that convey the developer, an exhaust port through which air inside the development tank is exhausted, and a filter provided at the exhaust port.The development tank includes a first holder provided with a first screw, a second holder provided with a second screw, a partition wall that partitions the first ...