Patent ID: 8376349
Filing Date: 2013-02-19
Classification: B65H,G03G,H04N

Abstract:
1. A document feeder comprising: a document placing portion having a placement surface where a document is placed thereon; a pick-up roller that is adapted to move up and down between a sheet feeding position in which the pick-up roller contacts with an upper surface of the document placed on the placement surface and a standby position in which the pick-up roller does not contact with the upper surface of the document placed on the placement surface; a pair of feed rollers and a pair of registration rollers that are disposed at a downstream side of the pick-up roller in a document feed direction; a document sensor that detects a document between the pair of feed rollers and the pair of registration rollers; a moving mechanism that causes the pick-up roller to move up and down; an operating portion that receives an operation of selecting a card document mode in which a plurality of card documents are successively fed with a predetermined interval between the card documents and a mode other than the card document mode; and a control portion that controls the moving mechanism, after the pick-up roller feeds a card document in a state in which the pick-up rollers is in the sheet feeding position when the card document mode is selected in the operating portion, to cause the pick-up roller to move up to the standby position at any time the document sensor detects a card document and to move down to the sheet feeding position when the document sensor detects no card document.