Patent ID: 8235378
Filing Date: 2012-08-07
Classification: B65H

Abstract:
1. A sheet take-out apparatus comprising: a supplying structure configured to move a plurality of sheets supplied in a stacking state in a stacking direction and supply a sheet at a leading edge thereof in a movement direction to a take-out position; a take-out structure including a vacuum chamber and a first air pressure source, configured to make contact with the sheet and generate an air current to suck the sheet supplied to the take-out position and rotate a front surface of the vacuum chamber, thereby taking out the sheet in a direction almost orthogonal to the stacking direction, and move the sheet to a conveying route; a suction structure including a suction chamber and a second air pressure source, the suction chamber being provided separately from the take-out structure, configured to generate an air current by the second air pressure source suctioning an air of the suction chamber to suck the sheet at the leading edge in the movement direction to the take-out position on an upstream side of a position where the take-out structure makes contact with the sheet in the sheet take-out direction by the take-out structure; an aiding structure configured to make contact with the sheet at the leading edge in the movement direction on the upstream side in the take-out direction of the position where the suction structure is provided and rotating, thereby aiding a sheet take-out operation and applying the brake onto a trailing edge of a succeeding sheet after a preceding sheet is taken out; a sensor to detect passing of the sheet taken out from the take-out position onto the conveying route; and a controller configured to judge that the sheet at the leading edge in the movement direction is not taken out by the take-out structure when the sensor detects non-passing of the sheet within a specified period of time, to control the operation of the suction structure so as to at least weaken the suction force by the suction structure when and to make operation of the aiding structure to aid the sheet take-out operation by making contact with the sheet and rotating in a sheet-take out direction.