ALEXANDRIA, Va., June 16 -- United States Patent no. 12,654,461, issued on June 16, was assigned to CANON K.K. (Tokyo).
"Transparent member and liquid ejection apparatus" was invented by Takuya Hatakeyama (Kanagawa, Japan) and Gou Sasaki (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A liquid ejection apparatus including a liquid ejection head for ejecting liquid onto a printing medium, a liquid tank with a transparent front wall for storing liquid, a transparent portion arranged facing the front wall through one can visually recognize the remaining amount, an indicator on the transparent portion indicates whether all liquid stored in a predetermined liquid bottle in an unused state can be i...