A sheet conveying device includes a sheet stacker, an air blower, and a guide. The sheet stacker stacks sheets. The air blower blows air to the sheets. The guide faces an uppermost sheet on the sheet stacker. A set height of a contact portion of the guide to contact the uppermost sheet is changeable

A sheet conveyance apparatus includes a control unit (120) that controls driving of a belt drive mechanism (4). The control unit (120) performs control such that the sheet is conveyed from the sheet accumulation area if (a) it is determined that the number of sheets currently accumulated in the sheet accumulation area is two or greater, while the sheet is not conveyed from the sheet accumulation area if (b) it is determined that the number of sheets currently accumulated in the sheet accumulation area is one.

A method of grouping sheet units, which belong together in sheet groups, a sheet stream comprising two superposed sheet units each by means of a grouping unit, a grouping unit for a sheet handling system, and a sheet handling system that allow a high processing speed and a high cycle efficiency of a sheet handling system are disclosed. A sheet unit can be held back in the grouping unit. Depending on whether the downstream subsequent sheet units transferred into the grouping unit belong to a sheet group, the held-back sheet unit can be released by itself and together with one or together with both downstream subsequent sheet units.

A sheet conveyance apparatus includes a control unit (120) that controls driving of a belt drive mechanism (4). The control unit (120) performs control such that the sheet is conveyed from the sheet accumulation area if (a) it is determined that the number of sheets currently accumulated in the sheet accumulation area is two or greater, while the sheet is not conveyed from the sheet accumulation area if (b) it is determined that the number of sheets currently accumulated in the sheet accumulation area is one.

A method of grouping sheet units, which belong together in sheet groups, a sheet stream comprising two superposed sheet units each by means of a grouping unit, a grouping unit for a sheet handling system, and a sheet handling system that allow a high processing speed and a high cycle efficiency of a sheet handling system are disclosed. A sheet unit can be held back in the grouping unit. Depending on whether the downstream subsequent sheet units transferred into the grouping unit belong to a sheet group, the held-back sheet unit can be released by itself and together with one or together with both downstream subsequent sheet units.

A sheet conveying device includes a sheet stacker, an air blower, and a guide. The sheet stacker stacks sheets. The air blower blows air to the sheets. The guide faces an uppermost sheet on the sheet stacker. A set height of a contact portion of the guide to contact the uppermost sheet is changeable.

A sheet processing apparatus capable of properly stacking sheets by detecting abnormality of a sheet stacking state during a sheet stacking operation to thereby prevent stack overflow. In the sheet processing apparatus, a conveyed sheet is stacked on a stacking tray. A sheet presence sensor detects a sheet on a sheet stacking surface of the stacking tray. A sheet height reduction sensor detects sheets within a predetermined distance downward from the uppermost surface of sheets stacked on the stacking tray. When the sheet presence sensor detects no sheet, and the sheet height reduction sensor detects a sheet during an operation for discharging a plurality of sheets onto the stacking tray, it is determined that an abnormal stacking state has occurred, and conveyance of a sheet is stopped.

A sheet processing apparatus capable of properly stacking sheets by detecting abnormality of a sheet stacking state during a sheet stacking operation to thereby prevent stack overflow. In the sheet processing apparatus, a conveyed sheet is stacked on a stacking tray. A sheet presence sensor detects a sheet on a sheet stacking surface of the stacking tray. A sheet height reduction sensor detects sheets within a predetermined distance downward from the uppermost surface of sheets stacked on the stacking tray. When the sheet presence sensor detects no sheet, and the sheet height reduction sensor detects a sheet during an operation for discharging a plurality of sheets onto the stacking tray, it is determined that an abnormal stacking state has occurred, and conveyance of a sheet is stopped.

A sheet stacking apparatus includes a conveyance path through which a sheet is to be conveyed, a guide which forms a part of the conveyance path and is openable and closeable with respect to the conveyance path, a lock member configured to lock the guide to maintain the guide in a closed state in which the guide is closed with respect to the conveyance path, and a trolley. In a case in which the trolley is placed at a predetermined position in the sheet stacking apparatus, a locked state in which the lock member locks the guide is prohibited from being unlocked so that the guide is maintained in the closed state. In a case in which the trolley is not placed at the predetermined position, the locked state is allowed to become an unlocked state in which the lock member does not lock the guide.

An apparatus for stacking monocells for producing electrical energy storage devices, each consisting of electrode films, and at least one separator interposed between them. The apparatus includes a transport member which receives a stack of monocells and a collection device provided with a support member movable along a functional axis between a collection position, in which it is within the overall dimensions of one of the monocells, and a rest position, in which it is outside the overall dimensions of that monocell, and a movement member selectively movable, independently of the support member, along a stacking axis between a support position, in which it cooperates with the support member, and at least one release position, in which it positions the monocells, in cooperation with the transport member.