US Patent Issued to SEIKO EPSON on March 31 for "Cartridge" (Japanese Inventors)

ALEXANDRIA, Va., March 31 -- United States Patent no. 12,589,594, issued on March 31, was assigned to SEIKO EPSON Corp. (Tokyo).

"Cartridge" was invented by Takumi Nagashima (Matsumoto, Japan), Yoshihiro Koizumi (Shiojiri, Japan) and Shun Oya (Kiso-machi, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The cartridge is attached to the cartridge attachment through an attaching operation in which the cartridge is completely inserted into the cartridge attachment in an insertion direction, or a horizontal direction, and then a rear portion of the cartridge in the insertion direction is moved in a rotation attaching direction containing a gravity-directional component with a deep side of the cartridge in th...