Image reading apparatus
AssigneeCanon Kabushiki Kaisha
InventorsKenji Hiromatsu, Noriaki Matsui
Life of this patent
Estimating the term…
Abstract
Disclosed is an image reading apparatus including: an original transporting device for transporting an original; an image reader for reading an image of the original in a first reading region or a second reading region while transporting the original by the original transporting device; and a correcting device for correcting image data read in the second reading region by the image reader so as to give the image data the same white level as image data read in the first reading region based on the ratio of the white level of the second reading region to that of the first reading region.
Claims14
An image reading apparatus comprising:
- original transport means for transporting an original to a platen glass;
- image reading means for reading an image of the original in a first reading region in which the platen glass is in contact with the original as it is transported by the original transport means, or in a second reading region in which the platen glass and the original transported by the original transport means are not in contact with each other as the original is transported by the original transport means;
- and
- correction means for correcting image data read in the second reading region by the image reading means based on a ratio of a white level of the second reading region to that of the first reading region.
An image reading apparatus comprising:
- original transporting means for transporting an original to a platen glass;
- image reading means for reading an image of the original in a first reading region in which the platen glass is in contact with the original transported by the original transporting means or a second reading region in which the platen glass and the original transported by the original transporting means are not in contact with each other while the original is transported on the platen glass by the original transporting means;
- and
- correction means for correcting image data read in the second reading region by the image reading means so as to give the image data a same white level as image data read in the first reading region based on a ratio of a white level of the second reading region to that of the first reading region.
Dependencies are inferred from the claim text.