ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,379,685, issued on Aug. 5, was assigned to Canon K.K. (Tokyo).
"Image forming apparatus" was invented by Keisuke Mogi (Chiba, Japan), Hisashi Tsukijima (Ibaraki, Japan), Yoshiya Numata (Ibaraki, Japan) and Masaki Maeno (Ibaraki, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The image forming apparatus forms a test chart on an image bearing member, the test chart including a plurality of test images including a first test image of a first density and a second test image formed at a position different from a position of the first test image in a conveying direction of a recording medium, the second test image having a second density different from t...