A sheet conveyor includes a feed roller configured to contact a sheet from above and feed the sheet in a sheet feed direction, a frictional member disposed downstream from the feed roller, a separation roller disposed downstream from the feed roller and facing the frictional member from above, and a guide portion located downstream from the feed roller and upstream from the separation roller. The guide portion includes a pointed portion located above a portion of a common tangent to the feed roller and the separation roller when viewed in a cross section that is orthogonal to an axial direction of the feed roller and an axial direction of the separation roller. The pointed portion is located along a width direction of the sheet. The guide portion is configured to guide the sheet fed over the pointed portion toward a nip between the separation roller and the frictional member.

A sheet conveying device includes a sheet container, an air blower, and a guide. The sheet container is configured to store a plurality of sheets. The air blower is configured to blow air to the plurality of sheets to separate a single sheet from subsequent sheets of the plurality of sheets. The guide is configured to contact a surface of the single sheet separated from the subsequent sheets of the plurality of sheets over a given region downstream from any position of an upstream region in a sheet conveyance direction to guide the single sheet. The upstream region is from an upstream end to a center of the single sheet in the sheet conveyance direction.

A sheet feeding device includes a sheet loader, a first conveyor, a second conveyor, and a guide. The sheet loader is configured to load a sheet bundle including a sheet with a flap. The first conveyor is configured to convey the sheet with the flap loaded on the sheet loader. The second conveyor is disposed adjacent to the first conveyor. The guide is disposed below the flap of the sheet to be conveyed, between the second conveyor and the sheet loader in a sheet conveying direction of the sheet, and is configured to guide the sheet.

A sheet feeding apparatus includes an apparatus body including an opening portion, a storage configured to store a sheet, a pickup roller configured to pick up and feed the sheet, a separation conveyance unit including a separation nip, and a guide member including a guiding surface configured to guide the sheet such that the sheet passes under an upper edge of the opening portion while the storage is being drawn out of the apparatus body. A downstream end of the guiding surface in a sheet feeding direction is positioned downstream of the separation nip in the sheet feeding direction. An upstream end of the guiding surface in the sheet feeding direction is positioned upstream in the sheet feeding direction of a leading-edge position of the sheet stored in the storage.

A sheet feeding apparatus includes an apparatus body including an opening portion, a storage configured to store a sheet, a pickup roller configured to pick up and feed the sheet, a separation conveyance unit including a separation nip, and a guide member including a guiding surface configured to guide the sheet such that the sheet passes under an upper edge of the opening portion while the storage is being drawn out of the apparatus body. A downstream end of the guiding surface in a sheet feeding direction is positioned downstream of the separation nip in the sheet feeding direction. An upstream end of the guiding surface in the sheet feeding direction is positioned upstream in the sheet feeding direction of a leading-edge position of the sheet stored in the storage.

A medium conveyance device includes a medium setting part on which a medium is set, a first roller coming in contact with the medium set on the medium setting part and sending out the medium in a conveyance direction, a second roller situated on a downstream side of the first roller in the conveyance direction and conveying the medium sent out by the first roller, and a medium contact part arranged in a conveyance path between the first roller and the second roller and coming in contact with the medium. The medium contact part has a plurality of contact surfaces switchable according to a type of the medium and differing in shape.

A sheet conveying device includes a sheet feed tray with a first guide, a main body with a second guide, a guide member disposed at the sheet feed tray, and a contact portion located at the main body. The sheet feed tray is movable in a first direction. The guide member is movable between a protruding position and a withdrawn position. The guide member at the protruding position is disposed downstream of the first guide in a sheet conveyance direction and upstream of the second guide in the first direction such that the guide member overlaps the second guide in the first direction. The guide member at the withdrawn position does not overlap the second guide in the first direction. The contact portion is configured to, as the sheet feed tray moves from the main body, contact and move the guide member from the protruding position toward the withdrawn position.

A sheet feeding device, which is included in an image forming apparatus, includes a roller detachably attached to the image forming apparatus and configured to feed a sheet in a sheet conveying direction, a shaft configured to engage with the roller and transmit a driving force to the roller, a movable body configured to rotate in a direction of rotational axis and includes a holding portion configured to engage with the second engaging portion of the roller and rotatably hold the roller and a guide configured to guide attachment of the second engaging portion of the roller to the holding portion, and a biasing body configured to apply a biasing force and bias the movable body from a drive receiving side to a drive transmitting side.

A sheet feeding device, which is included in an image forming apparatus, includes a roller detachably attached to the image forming apparatus and configured to feed a sheet in a sheet conveying direction, a shaft configured to engage with the roller and transmit a driving force to the roller, a movable body configured to rotate in a direction of rotational axis and includes a holding portion configured to engage with the second engaging portion of the roller and rotatably hold the roller and a guide configured to guide attachment of the second engaging portion of the roller to the holding portion, and a biasing body configured to apply a biasing force and bias the movable body from a drive receiving side to a drive transmitting side.

Trading card inventory management systems and related methods of use are described. These systems may include singulators, card translocators that pass cards from a receiver to storage, and back to the receiver, card chutes, and card guides. A card box system of storage and translocation is also described.