Sheet detecting apparatus with correction means for sheet surface condition and sheet thickness
AssigneeCanon Kabushiki Kaisha
InventorsYoshihiro Funamizu, Yoshiyuki Suzuki, Kazuhiko Hirooka, Michiharu Masuda, Masashi Oyumi, Hajime Kaji
Life of this patent
Estimating the term…
Abstract
There is provided a sheet detecting apparatus which detects the position of a sheet as it is conveyed through a conveying path and has reached a predetermined position. The surface condition and thickness of the sheet are also detected and a correction system is provided for correcting the position detecting result in accordance with the detected thickness and surface condition. Also provided is a conveying apparatus in which the conveyance of the sheet is controlled on the basis of the corrected sheet position detection.
Claims18
A sheet detecting apparatus comprising:
- sheet position detecting means for detecting that a sheet being conveyed in a conveying path has reached a predetermined position;
- sheet surface detecting means for detecting a surface condition of the sheet;
- sheet thickness detecting means for detecting a thickness of the sheet;
- and
- correction means for correcting a detection result of said sheet position detecting means in accordance with a detection result of the surface condition of the sheet detected by said sheet surface detecting means and the thickness of the sheet detected by said sheet thickness detecting means.
Dependencies are inferred from the claim text.