ALEXANDRIA, Va., March 19 -- United States Patent no. 12,251,945, issued on March 18, was assigned to TOSHIBA TEC K.K. (Tokyo).
"Printer device" was invented by Toshiyuki Tamura (Shizuoka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "According to one embodiment, the label printer includes a light irradiation unit that irradiates an area illuminated by external light where a label on which printing is completed exists with light, a light irradiation control unit that switches between light irradiation and non-irradiation by the light irradiation unit, a light receiving unit that acquires an optical signal from the area where the label on which printing is completed exists in synchronization with the l...