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

Claim 0:
1. An image forming apparatus comprising:
an image forming unit configured to form an image on a sheet;
a reading unit configured to read the image while conveying the sheet;
an execution unit configured to cause the image forming unit to execute image forming processing to form an image of a predetermined pattern on a sheet; and
an acquiring unit configured to acquire an adjustment value to be used for further image forming processing based on a result of reading the sheet by the reading unit, the sheet having the image of the predetermined pattern formed thereon,
wherein the image of the predetermined pattern includes a marker located near a corner of the sheet, and the marker is a 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.