A sheet feeding device includes a stacking portion, a first roller, a second roller, a third roller rotatable to provide peripheral movement in a predetermined direction and to provide peripheral movement in a direction opposite to the predetermined direction, a detecting unit, a driving unit for executing a feeding operation by the first roller, and a control unit for providing an instruction to the driving unit so as to continue or stop the feeding operation. The predetermined rotational frequency is larger than 0 and is smaller than a rotational frequency of the third roller in a period in which the third roller is rotated in the predetermined direction in a state in which a single recording material is fed to the nip.

A sheet feeding device includes a stacking portion, a first roller, a second roller, a third roller rotatable to provide peripheral movement in a predetermined direction and to provide peripheral movement in a direction opposite to the predetermined direction, a detecting unit, a driving unit for executing a feeding operation by the first roller, and a control unit for providing an instruction to the driving unit so as to continue or stop the feeding operation. The predetermined rotational frequency is larger than 0 and is smaller than a rotational frequency of the third roller in a period in which the third roller is rotated in the predetermined direction in a state in which a single recording material is fed to the nip.

The disclosure provides a cleaning robot maintenance system. The maintenance system includes a mop picking device and a first storage compartment, where the first storage compartment is configured to store at least two first sheet mops that are stacked; and the mop picking device is configured to pick a single first sheet mop from the first storage compartment, to connect the single first sheet mop and a mop board. Therefore, dirt is prevented from being left on a mop component of the cleaning robot and the base station during cleaning, thereby improving the user experience.

The disclosure provides a cleaning robot maintenance system. The maintenance system includes a mop picking device and a first storage compartment, where the first storage compartment is configured to store at least two first sheet mops that are stacked; and the mop picking device is configured to pick a single first sheet mop from the first storage compartment, to connect the single first sheet mop and a mop board. Therefore, dirt is prevented from being left on a mop component of the cleaning robot and the base station during cleaning, thereby improving the user experience.

A sheet feeding device includes a sheet stacking table, an air blower, a feeder, and an air sucker. The sheet stacking table stacks a bundle of sheets. The air blower blows air to the bundle of sheets to float an uppermost sheet from the bundle of sheets. The feeder feeds the uppermost sheet. The air sucker sucks air in such a direction that a sheet in vicinity of the uppermost sheet moves away from the feeder. The air sucker includes a suction nozzle to suck air, a suction fan to generate a negative pressure, a suction duct to communicate the suction nozzle with the suction fan, and an opening-and-closing mechanism to shut off and release ventilation in the suction duct.

Embodiments of a system and method for shingulating, singulating, and synchronizing articles in an article feeder system are disclosed. The article feeder system may include a shingulating device configured to receive a stack of articles and to produce a positively lapped stack of articles, a plurality of picking devices configured to pick one or more articles from the positively lapped stack of articles and to produce one or more singulated articles, and one or more synchronization devices configured to deliver the one or more singulated articles to one or more sorter windows.

Embodiments of a system and method for shingulating, singulating, and synchronizing articles in an article feeder system are disclosed. The article feeder system may include a shingulating device configured to receive a stack of articles and to produce a positively lapped stack of articles, a plurality of picking devices configured to pick one or more articles from the positively lapped stack of articles and to produce one or more singulated articles, and one or more synchronization devices configured to deliver the one or more singulated articles to one or more sorter windows.

A manipulating device, by which flexible flat objects can be repositioned and which has a movable gripping device which includes a support structure and at least one gripping unit. The gripping unit has a clamping arm which, together with a clamping surface of the support structure, delimits a clamping gap, in which a flat object portion can be firmly clamped. By means of a transport structure of the clamping arm which is drivable for a circumferential transport movement, the flat object portion can be transported into the clamping gap for subsequent clamping.

Regarding a restricting member that includes a contact face configured to be brought into contact with at least one portion of edges of a bundle of media mounted on a medium mounting section, and that is configured to be switched to either a blocking attitude for blocking advancement of the edges of the bundle of media into a nip portion between a feeding roller and a separating roller or an opening attitude for permitting the advancement of the edges of the bundle of media into the nip portion, the restricting member allows, in the blocking attitude, an edge shape of the bundle of media in contact with the contact face to be formed into a shape that fills in a tapered space tapering toward the nip portion.

A pickup method and a pickup device which enable to properly lift an individual target bag body among a plurality of conveyed bag bodies are provided. A pickup device includes: a transfer device that holds a target bag body among a plurality of bag bodies by a conveying device while the plurality of bag bodies are conveyed, and lifts a whole of the target bag body after lifting a part of the target bag body; and a pickup control unit that obtains position suggestion data indicating a position of the target bag body, and controls the transfer device on a basis of the position suggestion data, wherein the pickup control unit moves the transfer device according to the position suggestion data, and makes the transfer device liftably hold the target bag body.