ALEXANDRIA, Va., May 26 -- United States Patent no. 12,636,880, issued on May 26, was assigned to Canon K.K. (Tokyo).
"Apparatus and method" was invented by Kenzou Shibuya (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus drives a printhead including a plurality of print elements configured to discharge ink onto a print medium by voltage application. The apparatus includes a control unit configured to assign the plurality of print elements to a plurality of blocks, and time-divisionally drive the plurality of print elements for each block. Upon inspection of the printhead, the control unit is configured to set, for each block, an application time of a voltage applied to the print e...