US 12,189,320 B2
Image forming apparatus, control method of image forming apparatus, and storage medium
Shinya Suzuki, Chiba (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Sep. 11, 2023, as Appl. No. 18/464,319.
Claims priority of application No. 2022-145523 (JP), filed on Sep. 13, 2022.
Prior Publication US 2024/0085839 A1, Mar. 14, 2024
Int. Cl. G03G 15/00 (2006.01); G03G 15/01 (2006.01); G03G 15/32 (2006.01)
CPC G03G 15/55 (2013.01) [G03G 15/0115 (2013.01); G03G 15/32 (2013.01); G03G 15/5041 (2013.01); G03G 15/5062 (2013.01); G03G 2215/00569 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An image forming apparatus having a failure diagnosis function, the image forming apparatus comprising:
a generating unit configured to generate a halftone image by performing halftone processing for an input image;
an obtaining unit configured to obtain a scanned image of a printed material on which the halftone image is printed; and
an identification unit configured to identify a failure component of the image forming apparatus based on a difference between the scanned image and the input image, wherein
the generating unit generates the halftone image by representing a dot pattern of a halftone portion in a case where the input image is a test image for the failure diagnosis by a dot pattern whose frequency is relatively higher than that of a dot pattern that is applied to the halftone portion in a case where the input image is an image other than the test image.