A sheet conveyance apparatus comprises a first sheet accommodation unit, a second sheet accommodation unit, a conveyance path and a controller. The first sheet accommodation unit and the second sheet accommodation unit are both provided with a movable guide plate which determines the size of an accommodated sheet. The conveyance path conveys a sheet between the first sheet accommodation unit and the second sheet accommodation unit. The controller carries out a control processing so as to change, in a case in which the accommodation size of the first sheet accommodation unit is changed, the accommodation size of the second sheet accommodation unit to be the same as that of the first sheet accommodation unit.

A sheet feeding device for feeding a sheet includes a support unit, an open-close member rotatably supported between open and closed positions, a slide member supported in a slidably movable manner and including a rotation shaft portion, and a regulation member supported by the slide member. The open-close member supports the sheet in the open position with the support unit. The regulation member regulates a position of the sheet supported by the support unit or the sheet supported by the support unit and the open-close member. The support unit includes a guide portion that movably guides the rotation shaft portion. If the open-close member is rotated from the open position toward the closed position in a state in which the open-close member is in contact with the slide member, the slide member rotates by following movement of the open-close member with respect to the guide member.

An image forming apparatus, including: an apparatus main body; an openable and closable member provided on the apparatus main body; an image reading portion configured to read an image of an original, the image reading portion being supported on the apparatus main body and being movable to a first position and to a second position; and a stopper member configured to move in conjunction with a movement of the image reading portion, wherein when the image reading portion is moved to the first position, the stopper member is moved to a restricting position for restricting the openable and closable member from moving from a closed position to an open position, and wherein when the image reading portion is moved to the second position, the stopper member is moved to an allowing position for allowing the openable and closable member to move from the closed position to the open position.

An image forming apparatus includes an image forming unit, a paper loading base on which manual-feed paper is loaded, a manual-feed paper conveying unit, and a dustproof cover which covers the paper loading base being in the overhang state. The paper loading base has a lower end rotatably supported on one outer surface portion of the device main body, and is opened from an upper end thereof and disposed at a predetermined oblique angle or in a horizontal overhang state such that an overhang side becomes an upper side in an oblique direction. The manual-feed paper conveying unit is conveys the manual-feed paper on the paper loading base onto a paper conveyance path one by one. The dustproof cover includes a base which engages with the paper loading base, and an opening-and-closing cover which is rotatably connected to the base and is opened upwardly on the overhang side.

A sheet feeder device that stores and sends out a transfer medium includes: a sheet feeder device main unit having an opening formed at an upper portion and including an upstream partial lid located on an upstream side and a downstream partial lid located on a downstream side, the upstream partial lid and the downstream partial lid covering at least part of the opening; a sheet feed tray provided in the sheet feeder device main unit, the transfer medium being loaded onto the sheet feed tray; an elevating unit configured to lift up and down the sheet feed tray; and a control unit configured to control the lifting up and down of the sheet feed tray, wherein the control unit senses opening and closing of the upstream partial lid and the downstream partial lid, and controls the lifting up and down being performed by the elevating unit.

A sheet conveying device includes a sheet stacker, an air blower, a guide, and a holder. The sheet stacker stacks sheets. The air blower blows air to the sheets on the sheet stacker. The guide is disposed facing an uppermost sheet of the sheets on the sheet stacker. The holder holds the guide and has a groove along which the guide is inserted. The groove has a plurality of direction switching portions at each of which the guide changes a direction of movement when the groove receives the guide.

A sheet feeding device includes a door movable between an opened position and a closed position relative to an apparatus body, a stacking portion for a sheet, a cover portion configured to be situated at a first position when the door is situated at the opened position and to be situated at a second position when the door is situated at the closed position, and a moving unit including a feeding roller and a moving member supporting the feeding roller. The moving member is movable with respect to the stacking portion in a first direction in which the feeding roller comes close to the stacking portion and in a second direction which is opposite to the first direction. In a state in which the cover portion is situated at the first position, the moving unit is situated between the cover portion and the door.

There is provided a stacking apparatus capable of stably conveying and stacking sheets without occurrence of damage or buckling of the sheets in the structure of discharging the curled sheets one by one. In regard to each of a plurality of clamp guides which project toward stacking trays from a conveyor to guide sheets S, the projecting position varies in accordance with a size and an amount of stacked sheets on the stack trays. The stacking tray comprises an inclined surface and a curved surface. An upper guide is located to face the inclined surface by a predetermined interval, and the upper guide is located not to face the curved surface or is located to face it by an interval larger than a predetermined interval.

A media-sheet stacking system (10) for stacking media sheets on a device output tray (OT) comprises a kicker (25) to advance a media sheet along the output tray by pushing a trailing edge of the media sheet as it exits the device, and a movable element (32a) arranged to face the output tray across a space that receives media sheets exiting the device. A drive mechanism (33) is provided to drive the movable element in the direction of advance of the media sheet along the output tray.

A printing apparatus includes a printing head that prints on a printing medium, a moving member that moves reciprocally with the printing head, and a conveying member that conveys the printing medium in a direction which intersects a printing head moving direction. Also included are a module contained in a contained position in a non-printing period, and developed in a developed position in a printing period, and a drive connection member that moves the module between the contained and developed positions with conveying member drive. The drive connection member includes a trigger arm that enters a printing head moving area when the moving member is driven in a direction opposite to which the printing medium is conveyed. When the moving member presses and moves the trigger arm, the conveying member is connected to the module such that a connected state in which the driving force transmission is maintained.