Patent ID: 11905137
Assignee: CANON KABUSHIKI KAISHA
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 2:
3. A sheet feeding device according to claim 1, wherein the calculated length of the sheet is a first length,
wherein said controller calculates a second length of the sheet with respect to the sheet feeding direction on the basis of the sheet feeding speed, a third time which is a difference between the timing when the leading end portion of the sheet passes through the first detecting position and the timing when the trailing end portion of the sheet passes through the third detecting position, and a third distance between the first detecting position and the third detecting position with respect to the sheet feeding direction, and
wherein said controller calculates a length of the sheet with respect to the sheet feeding direction on the basis of the first length and the second length, and controls the sheet feeding timing by said second feeding roller pair on the basis of information of the length of the sheet.