ALEXANDRIA, Va., March 17 -- United States Patent no. 12,578,670, issued on March 17, was assigned to Canon K.K. (Tokyo).
"Image forming apparatus" was invented by Koji An (Saitama, Japan) and Shinji Katagiri (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An image forming apparatus includes an image bearing member, a transfer member, an acquiring portion, an applying portion, and a controller. When a transfer voltage is subjected to constant-voltage control so that the transfer voltage applied to the transfer member by the applying portion is substantially constant, in a case that the transfer voltage, when a toner amount used for a toner image is a first toner amount, is a first voltage, th...