Patent ID: 8622380
Filing Date: 2014-01-07
Classification: B65H

Abstract:
1. A sheet feeding device, comprising: an elevatable tray that supports a sheet; an air blowing unit that blows air toward the sheet supported by the tray to float the sheet; a suction conveyance member that draws and conveys the sheet floated by driving the air blowing unit; a negative pressure generation part that has a suction opening that applies a negative pressure for sheet suction to the suction conveyance member; a shutter member that moves between a closing position where the suction opening in an upstream side in a sheet feeding direction is partially closed and an open position where the suction opening is opened; and a controlling unit that is, in a driving state of the negative pressure generation part, configured to control the shutter member to follow a preceding sheet that is drawn onto the suction conveyance member, to move to a downstream side in the feeding direction to close the suction opening, and return to the open position at a predetermined timing to draw the sheets onto the suction conveyance member in a state where an upstream edge of the preceding sheet in the feeding direction and a downstream edge of a subsequent sheet in the feeding direction are overlaid by a predetermined amount.