Sheet feeding device

A sheet feeding device comprising:

• a document mounting board configured to have documents mounted thereon;
• a feed mechanism configured to include a pickup roller rotating to forward the documents and to feed the documents mounted on the document mounting board to a downstream side in a feeding direction of the documents;
• and
• a base portion configured to support the feed mechanism,
• wherein a downstream end of the document mounting board in the feeding direction of the document in the feed mechanism, is connected to the base portion, so as to be rotatable about a first turning shaft that is parallel to a rotation shaft of the pickup roller,
• the first turning shaft is located downstream from the feed mechanism in the feeding direction of the document in the feed mechanism,
• a mounting surface of the document mounting board on which the documents are mounted, is located above the pickup roller, when the documents are mounted on the document mounting board, and
• the document mounting board turns about the first turning shaft such that the mounting surface moves downward and the mounting surface moves downward from a contact portion of the pickup roller with the document, when the documents mounted on the document mounting board are fed.