Image reading apparatus and image reading method

Abstract

An Image reading apparatus and AN image reading method are disclosed. The image reading apparatus according to an embodiment includes a first sensor, a roller, a correction unit, a second sensor, a control unit, and a scanner. Upstream to downstream positions with regard to a transportation direction of the sheet are determined in the following order: the first position, a second position, a thirdposition. The first sensor detects the presence or absence of a fold of the sheet in the first position. If it is detected in the first position that the fold is present, the roller transports a sheet in a reverse transportation direction. The correction unit corrects the fold in the first position. The second sensor detects the presence or absence of the fold in the second position. If it is detected in the second position that the fold is present, the control unit controls drive of the roller in such a manner that the sheet is transported up to the first position in the reverse transportation direction. The scanner reads an image on the sheet of which the fold is corrected in the first position.

Description

technical field [0001] This embodiment relates to an image reading device and an image reading method. Background technique [0002] The image reading device reads an image of the surface of the conveyed sheet. Folds may occur at the corners of the sheet. If the fold at the corner of the sheet cannot be corrected before the image is read, the image reading device cannot read the image at the portion hidden by the fold. However, existing image reading devices sometimes fail to improve the possibility of correcting sheet folds. Contents of the invention [0003] An image reading device, which determines a first position, a second position, and a third position in order from upstream to downstream with respect to a conveying direction of a sheet, and is characterized in that the image reading device includes: a first sensor, Detecting whether or not the sheet is folded at the first position; rollers, when the fold is detected at the first position, conveying the sheet towa...

AI Technical Summary

Problems solved by technology

If the fold at the corner of the sheet cannot be corrected before the image is read, the image reading device cannot read the image of the portion hidden by the fold

However, existing image reading devices sometimes fail to improve the possibility of correcting sheet folds

Images