A sheet feeder includes: a casing; a first roller; a pressing portion; a first spring; and a second spring. The pressing portion is movable between a first position and a second position via a third position. The pressing portion in the first position faces the first roller within a conveying region defined in the casing. The pressing portion in the second position is separated from the first roller farther than in the first position. The third position is located between the first position and the second position. The first roller is exposed to the conveying region. The first spring urges the pressing portion toward the first roller when the pressing portion is disposed between the first position and the second position. The second spring urges the pressing portion toward the first roller when the pressing portion is disposed between the second position and the third position.

A card transport device transports one or more cards while reducing failures of its feed unit in feeding the cards. A card transport device includes a support surface that supports one or more cards thereon, a feed unit facing the support surface for feeding the one or more chards, a separator located downstream from the feed unit in a transport direction, a slope connected to a downstream support end of the support surface in the transport direction and extending obliquely upward downstream in the transport direction toward the separator, and a restrictor located on the support surface. The restrictor restricts a position of an upstream end of a particular card directly supported on the support surface, out of the one or more cards, thereby positioning a downstream end of the particular card to be downstream from the feed unit in the transport direction.

A system for presenting media sheets includes a finisher output bin assembly. The finisher output bin assembly includes a translatable output floor, and a guide substrate coupled to the translatable output floor to guide the translatable output floor relative to the guide substrate in at least one coordinate direction. The finisher output bin assembly includes an output structure mechanically coupled to the translatable output floor to drive the translatable output floor relative to the guide substrate.

A sheet supplier, including: a tray including a sheet support surface; a sheet supply roller configured to supply an uppermost one of sheets; a rotational member configured to contact a lowermost one of the sheets; a presser configured to press the supply roller relative to the rotational member; and a supporter configured to support the rotational member by a contact portion such that the rotational member is rotated by a movement of the lowermost sheet and to limit a movement of the rotational member caused by a force of the lowermost sheet in a sheet supply direction; wherein, where static friction coefficients between the supply roller and the uppermost sheet, between the sheets on the support surface, between the rotational member and the lowermost sheet, and between the rotational member and the contact portion are respectively defined as 2, 3, and 4, the following expressions are satisfied: 1>4>2, 3>4.

This disclosure provides printing systems, printing methods, and assemblies for decurling a sheet of print medium. Print media can include paper or other media that can exhibit some tendency to deform when damp or exposed to a certain degree of moisture or moisture. This deformation can be undesirable and can affect the image quality or the perceived image quality of printed matter. To increase the energy efficiency of the procedure for unrolling sheets that have undergone deformation and increase productivity, the following curl unrolling unit is applied, which includes a frame attachable to a sheet collecting tray at an outlet of a printing device, a first corner component mounted on a frame containing a first sloping surface to receive a first corner of a leading edge of a sheet of print medium issued by the printing device, and a second corner component mounted on the frame, comprising a second sloping surface to receive a second corner of a leading edge of the sheet of print medium issued by the printing device.

A loading device includes a placement portion and a friction member. A single paper sheet discharged from a discharge unit is placed on the placement portion. The friction member is disposed downstream of a downstream end portion of the placement portion in a discharge direction, and includes a contact surface that can come into contact with a back surface, of the single paper sheet, facing the placement portion. The contact surface extends at least in the discharge direction, at a position lower than the height position of the downstream end portion in a height direction.

A sheet feeding apparatus including: a sheet stacking unit on which a sheet is stacked; a feed member configured to abut against the sheet stacked on the sheet stacking unit to feed the sheet; a friction member disposed on the sheet stacking unit so as to be opposed to the feed member; a drive unit configured to drive the feed member; a detection unit configured to detect a load on the drive unit when the drive unit drives the feed member; and a control unit configured to control the drive unit, so that the control unit causes the drive unit to drive the feed member at a first speed and thereafter in a case where the load detected by the detection unit satisfies a predetermined condition, the control unit causes the drive unit to drive the feed member at a second speed higher than the first speed.

A sheet feeding apparatus includes a sheet supporting portion including a supporting surface, an abutment portion against which a leading edge of the sheet abuts, a feeding rotator configured to feed the sheet, a first friction member provided on the supporting surface so as to face the feeding rotator, the first friction member including a first friction surface having a static friction coefficient greater than that of the supporting surface, a trailing end supporting portion configured to support a trailing end portion of the sheet curved upward, and a second friction member disposed upstream of the first friction member in the sheet feeding direction on the supporting surface, the second friction member including a second friction surface which has a static friction coefficient greater than that of the supporting surface and is configured to be in contact with the sheet supported by the supporting surface.

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 sheet feeder includes: a casing; a first roller; and a pressing portion. The casing defines therein a conveying region through which a sheet is conveyed in a conveying direction. The first roller has a rotation axis extending in an axial direction crossing the conveying direction and rotatable about the rotation axis. The first roller has a portion exposed to the conveying region. The pressing portion is movable in a direction crossing the conveying region between a first position and a second position. The pressing portion is urged toward the first roller to provide the first position. The pressing portion in the first position has a portion disposed within the conveying region and spaced apart from the first roller by a prescribed distance. The pressing portion in the second position is separated from the first roller farther than in the first position.