Patent ID: 11917114
Assignee: CANON KABUSHIKI KAISHA
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. A control method for an image forming apparatus including an image forming unit configured to form an image on a sheet and a reading unit configured to read the image while conveying the sheet,
the control method comprising:
causing the image forming unit to execute image forming processing to form an image of a predetermined pattern on a sheet; and
causing the reading unit to read the image on the sheet having the image of the predetermined pattern formed thereon and acquiring an adjustment value to be used for further image forming processing based on a result of the reading,
wherein the image of the predetermined pattern includes a marker located near a corner of the sheet, and the marker is an area surrounded by a plurality of sides including a side that is parallel to a long side of the sheet, a side that is parallel to a short side of the sheet and a side that is not parallel to a short side and a long side of the sheet.