摘要:
A sheet stacking apparatus includes a discharging portion including a nip portion nipping and conveying a sheet, a stacking portion on which the sheet discharged by the discharging portion is stacked, an air blowing unit configured to blow air toward a lower face of the sheet being discharged by the discharging portion, and an air volume control portion configured to control the air blowing unit such that a volume of the air blown by the air blowing unit is switched from a first air volume to a second air volume which is smaller than the first air volume while the nip portion of the discharging portion is nipping and conveying the sheet to set the volume of the air to the second air volume in a case where a trailing end of the sheet discharged by the discharging portion passes through the nip portion.
摘要:
A method for feeding sheets of paper comprises the following steps: providing a stack of papers on a storage surface of a paper feeding device, providing a flow of air for separating an uppermost sheet of paper from the rest of the stack of papers; determining the vertical position of the uppermost sheet of paper; adjusting the flow of air in dependence on the determined vertical position of the uppermost sheet of paper; and repeating the steps of determining the vertical position of the uppermost sheet of paper and adjusting the flow of air in dependence on the determined vertical position of the uppermost sheet of paper. During continuous operation, the flow of air is controlled in cycles with one part of the cycle, preferably the first part of the cycle, with a higher flow of air, and one part of the cycle, preferably the second part of the cycle, with a lower flow of air. By imparting the uppermost sheet of paper a pulsating movement up and down, the problems associated with electrostatic charging are mitigated.
摘要:
A conveyance device includes an image-forming drum (52) which fixes a rear surface (PB) of a sheet (P) and conveys the sheet along an arc-shaped path at a transfer position (312), a chain gripper which includes a gripper (64D) which is disposed on the downstream side of the image-forming drum in a conveyance direction and holds a leading end portion of the sheet, conveys the sheet along the arc-shaped path at the transfer position, and is disposed at a position at which a portion of the path leads to the image-forming drum side from the transfer position, and a blower unit (300) which is disposed on the chain gripper side from the transfer position, blows air from the chain gripper side to the image-forming drum side on the downstream side of the transfer position in the conveyance direction, and blows air toward the sheet conveyed by the chain gripper.
摘要:
A method is provided for transferring a sheet in a sheet transport assembly from a supplying conveyor to a receiving conveyor. The method comprises the steps of: arranging a contact side of a sheet in contact with a transport belt of the supplying conveyor; advancing the sheet on the transport belt in a transport direction along a process unit, which is arranged for applying a process to a process side of the sheet, the process side being opposite to the contact side, to a transfer area where the sheet is transferred to a receiving conveyor; controlling an air flow directed onto the process side of sheet for urging the sheet towards a supporting element, which supports the sheet during transport in the transfer area, thereby correcting a curl deformation of the sheet. The air flow is controlled in response to at least one sheet attribute comprising a media characteristic of the sheet, wherein said media characteristic defines a curl deformation behavior of the sheet.
摘要:
A sheet feeding device having; a mounting portion capable of accommodating a stack of sheets; a blowing device that blows air onto the stack placed in the mounting portion, thereby floating at least a top sheet from the stack; a suction/transportation mechanism that includes a suction belt provided above the mounting portion and attracting the top sheet floated by the blowing device to transport the attracted sheet toward a transportation path; an image pickup device disposed so as to capture an image of the floated top sheet and the next sheet therebelow; and an illuminating device that emits light toward an area to be captured by the image pickup device. The light emitted by the illuminating device illuminates a plane in a direction approximately normal thereto, the plane including the closest end surface of the stack of sheets to the image pickup device.
摘要:
A sheet feeding device includes a loading section on which sheets are loaded, a delivery section that sequentially delivers the sheets from a top of a stack of the sheets having a side surface loaded on the loading section, a blowing section that has a blowing opening, which opens opposite the side surface of the stack of sheets loaded on the loading section, and that blows air toward the side surface of the stack of sheets through the blowing opening, an inclination section that causes the stack of sheets loaded on the loading section to be inclined in accordance with the quantity of the sheets loaded on the loading section, and a setting section that sets a position of the blowing opening of the blowing section in accordance with an amount of inclination of the stack of sheets that are inclined by the inclination section.
摘要:
A device for reducing rotation of an article during singulation of a stack of articles is disclosed. The device may include a torsion element, a rotatable member configured to rotate about an elongated axis of the torsion element between a first position and a second position, and a revolving member coupled to the rotatable member. An outer surface of the revolving member contacts a drive belt in the first position and an article in the second position. The torsion element exerts torque on the rotatable member when it moves from the first position towards the second position. The torque causes the outer surface of the revolving member to apply a frictional force to the article, thereby minimizing rotation of the article. Systems and methods of singulating articles are also disclosed.
摘要:
A sheet feeding device having; a mounting portion capable of accommodating a stack of sheets; a blowing device that blows air onto the stack placed in the mounting portion, thereby floating at least a top sheet from the stack; a suction/transportation mechanism that includes a suction belt provided above the mounting portion and attracting the top sheet floated by the blowing device to transport the attracted sheet toward a transportation path; an image pickup device disposed so as to capture an image of the floated top sheet and the next sheet therebelow; and an illuminating device that emits light toward an area to be captured by the image pickup device. The light emitted by the illuminating device illuminates a plane in a direction approximately normal thereto, the plane including the closest end surface of the stack of sheets to the image pickup device.
摘要:
A counter ejector disposed at a downstream part of a box former, the counter ejector including a hopper that receives a sheet-shaped corrugated board box being transferred from an upstream side and fallen; and a blower that downwardly blows air to a hopper from above the corrugated board box, wherein the blower is capable of changing a blowing area to be blown along a transfer direction of the corrugated board box, and blows air to the blowing area corresponding to at least the front-end portion and the rear-end portion of the hopper in the transfer direction if the corrugated board box has a possible maximum size in the transfer direction.
摘要:
A sheet processing apparatus for receiving and processing a sheet conveyed from an image forming apparatus, the sheet processing apparatus comprising: a discharging unit configured to discharge the sheet; a stacking unit configured to stack thereon the sheet discharged by the discharging unit; a blowing air unit configured to blow air along a direction parallel to a surface of the sheet being stacked; a first alignment unit having a pair of alignment plane opposed each other, the first alignment unit configured to align the sheet in a direction parallel to a discharging direction of the sheet; and a second alignment unit configured to align the sheet in a direction orthogonal to the discharging direction of the sheet, wherein the blowing air unit is provided at a position opposed to the alignment plane.