Abstract: An image reading apparatus includes a feeding roller configured to feed a document, a separation roller configured to pinch the document with the feeding roller at a nipping position for separation, a first sending roller located downstream of the feeding roller and configured to send the document downstream, a read sensor located downstream of the first sending roller and configured to read the document, and a second sending roller located downstream of the read sensor and configured to send the document downstream. A guide surface is disposed downstream of the nipping position and below a common tangent line to the first sending roller and the second sending roller. The guide surface is positioned to come in contact with a front end of the document sent downward from the nipping position beyond the common tangent line to guide the document upward toward the common tangent line.

Abstract: An image reading apparatus includes a feeding roller configured to feed a document, a separation roller configured to pinch the document with the feeding roller at a nipping position for separation, a first sending roller located downstream of the feeding roller and configured to send the document downstream, a read sensor located downstream of the first sending roller and configured to read the document, and a second sending roller located downstream of the read sensor and configured to send the document downstream. A guide surface is disposed downstream of the nipping position and below a common tangent line to the first sending roller and the second sending roller. The guide surface is positioned to come in contact with a front end of the document sent downward from the nipping position beyond the common tangent line to guide the document upward toward the common tangent line.

Abstract: A medium feeding device includes: a placement unit on which a medium is placed; a feeding section that feeds the medium placed on the placement unit; a wrinkle detection section that is provided on a further upstream side than the feeding section in a feeding direction and outputs a detection value in accordance with a wrinkle in the medium; and a control section that performs predetermined control on the basis of the detection value of the wrinkle detection section and stops the feeding section in a case in which the detection value output from the wrinkle detection section exceeds a predetermined allowable value.

Abstract: A medium feeding device includes: a placement unit on which a medium is placed; a feeding section that feeds the medium placed on the placement unit; a wrinkle detection section that is provided on a further upstream side than the feeding section in a feeding direction and outputs a detection value in accordance with a wrinkle in the medium; and a control section that performs predetermined control on the basis of the detection value of the wrinkle detection section and stops the feeding section in a case in which the detection value output from the wrinkle detection section exceeds a predetermined allowable value.