| 摘要 |
A sheet feeder (3) includes a pickup roller (51) for feeding a sheet on a tray (31) toward a predetermined processing position, an arm member (50) rotatably supporting the pickup roller, a rotary shaft (521) supported on the housing (30) to be rotatable about an axis thereof, a coupling member (57) for coupling the arm member and the rotary shaft, a pivoting mechanism (56) for pivoting the arm member via the rotary shaft so that the pickup roller shifts its position between a feeding position and a retracted position, and a controller (8) for controlling the operation of the pivoting mechanism. The controller controls the arm member to pivot in such a direction that the pickup roller moves toward the retracted position when a sheet is placed on the tray. |
