Patent ID: 11956392
Assignee: RICOH COMPANY, LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  B | IPC B  H

Claim 4:
5. The image forming apparatus according to claim 1,
wherein
the program instructions further cause the processor to store in the memory an image of each line read by the image reader in association with a detected value output from the detector,
the mark is formed in each of a front edge area and a rear edge area on the recording medium with respect to the conveyance direction, and the program instructions further cause the processor to
read an image of each line from the memory in an order read by the image reader, and calculate a position of the mark in the front edge area, and
read an image of each line from the memory in an order reverse from the order of read by the image reader, and calculate a position of the mark in the rear edge area.