A sheet conveying device includes: a housing; a sheet supply tray; and a dust proof cover including a first cover and a second cover. The sheet supply tray is supported to the housing and pivotally movable between a closed position and an open position. The first cover is supported to the housing and pivotally movable between a first position in proximity to the sheet supply tray and a second position away from the sheet supply tray. The second cover is connected to the first cover and pivotally movable about a second pivot axis between a third position in proximity to the sheet supply tray and a fourth position away from the sheet supply tray. The second cover has a center of gravity positioned closer to the housing than the second pivot axis is to the housing in a state where the sheet supply tray is in the closed position.

A conveyance device to convey a sheet includes an apparatus main body including a regulating portion, an opening/closing door including a first guide portion, and a conveyance guide supported by the opening/closing door and having a second guide portion and a regulated portion. The opening/closing door moves relative to the apparatus main body between an open position and a closed position where the conveyance guide is placed between the apparatus main body and the opening/closing door. When the conveyance guide pivots in an away direction where the second guide portion moves away from the first guide portion with the opening/closing door in the open position, the regulated portion contacts the regulating portion to regulate rotation of the conveyance guide in the away direction. The second guide portion and the regulated portion are on one side of a pivot axis in a direction that is perpendicular to a pivot axis direction.

A picking device for picking up plate-like or pillar-shaped workpieces one at a time from the top of the workpieces stacked in the vertical direction, the workpiece picking device including: a chuck including a plurality of gripping claws arranged around a topmost workpiece, the plurality of gripping claws configured to grip a side surface of the topmost workpiece, the chuck being movable in a vertical direction; and an air blowing circuit provided inside at least one of the gripping claws, including a blowing port having an opening toward a second workpiece, the air blowing circuit configured to blow air downward from the blowing port.

A sheet transport apparatus includes a first casing in which a transport path is formed; a transport unit which transports a sheet along the transport path; a second casing which is provided to be movable with respect to the first casing; a sheet support unit which is rotatably provided in the first casing at a position on a side to which the second casing is moved, the sheet support unit being changeable between a first state, a second state, and a third state and supporting the sheet at least in the third state; and an urging unit which urges the sheet support unit toward the first state within a range from the first state to the second state and which urges the sheet support unit toward the third state within a range from the second state to the third state.

The likelihood of a medium jamming is reduced or avoided during discharging media to a discharged-sheet receiving tray, and a plurality of media are appropriately discharged to, and stacked on, the discharged-sheet receiving tray. A scanner includes an apparatus body including a reading section that reads a sheet, a discharge roller pair that is provided inside the apparatus body and discharges the sheet after reads in the reading section, and a discharged sheet tray that receives the sheet being discharged by the discharge roller pair. The discharged sheet tray includes a first member that has at least a portion that is located inside the apparatus body. The first member is that supports the medium at a position higher than the placement surface of the discharged sheet tray.

A sheet feeding apparatus includes a support member having a support surface, a feed roller, a stopper, and a restriction member. The stopper includes a restriction surface configured to contact leading edges of sheets supported on the support surface. A tangent extends in parallel to the support surface and passes through a point on an outer peripheral surface of the feed roller, and the tangent and the restriction surface of the stopper crosses at an intersection point. When the stopper moves from a first position to a second position, the intersection point moves with a movement velocity in a direction parallel to the tangent, the movement velocity at the intersection point being defined as a specified movement velocity. The restriction member is configured to restrict movement of the stopper such that the specified movement velocity is greater than or equal to a circumferential velocity of the feed roller.

A sheet feeding apparatus includes a support member having a support surface, a feed roller rotatable about a rotation axis located below a portion of the support surface, a separation roller disposed downstream from the feed roller, a separator disposed upstream from the separation roller, a stopper, when viewed in a direction of the rotation axis, disposed at least partially overlapping the separator and movable between a first position in which the stopper crosses the support surface and restricts leading edges of the sheets supported on the support surface and a second position, downstream from the first position in a conveying direction, in which the stopper is spaced apart from the support surface, and a restriction member configured to hold the stopper in the first position and to restrict movement of the stopper while continuing to support the stopper moving from the first position to the second position.

An image reading apparatus includes a feed roller configured to feed paper toward a reading section, and a medium detection section provided along a transport path between the feed roller and the reading section and configured to include a transmitting portion configured to output an output value equivalent to a magnitude of an ultrasonic wave, and determines whether the transport of the paper is to be continued or to be brought to a halt on the basis of a lower limit value and an upper limit value for the output value, which are set in accordance with the kind of the paper. Further, in a case where the output value satisfies a first condition, a transport of the medium is continued, and in a case where the output value satisfies a condition different from the first condition, the transport of the medium is brought to a halt.

A feed detection unit which detects a document which is fed is provided at a position between a pinching position at which a feed roller and a frictional force application portion pinch the document and an intersecting position at which a tangential line of the feed roller which is closer to a downstream side in a transport direction than the pinching position is perpendicular to a transport path in the transport direction, which is a different position from the feed roller in a width direction which intersects the transport direction.

A feeding roller for a document conveying apparatus includes a plurality of groove portions arranged with a regular interval in a width direction of the feeding roller on a surface of the feeding roller, and a projection portion provided between each pair of adjacent groove portions to scrape off paper particles on the external peripheral. The projection portion has a regular pattern extending in the width direction of the feeding roller.