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.

An image recording apparatus for recording an image on a sheet includes a recording section which records the image on the sheet in a transport passage for transporting the sheet in a transport direction and multiple plates which are spaced apart from each other in a widthwise direction. These multiple plates include a first type of plate and a second type of plate. Plates of a first type of plate are configured to overlap a sheet when viewed in a direction perpendicular to the transport direction and the widthwise direction, while plates of the second type of plate do not.

A detector, which is included in a sheet feeding device, a sheet conveying device, an image forming apparatus and an image reading device, contacts and detects a sheet, and includes a base, a sheet contact face to which the sheet contacts, and a coat layer formed on the sheet contact face. A difference of a static coefficient of friction s of the coat layer and a kinetic coefficient of friction d of the coat layer is smaller than and equal to 0.12.

A paper sheet transportation mechanism includes: transportation portions between which a paper sheet is sandwiched so as to transport the paper sheet; and a transportation guide that protrudes in a direction of the paper sheet sandwiched by the transportation portions such that the paper sheet is deformed into a wave shape in a cross section perpendicular to a transportation direction of the paper sheet, and that extends in the transportation direction.

In a banknote pay-in/pay-out device (10) of an ATM (1), respective pawl portions (42) are provided at upper ends of a front storage box conveyance guide (32) and a rear storage box conveyance guide (33) provided to a front storage box conveyance guide (32) of a banknote storage box (26). In each pawl portion (42), plural pawl bodies (43) are discretely disposed along a left-right direction. In each pawl body (43), a guide plate (51) looking onto a conveyance space (34) is connected to an upper end of a main body (41), a facing plate (52) is connected to an upper-side edge of the guide plate (51), and a left-side plate (53) and a right-side plate (54) are respectively connected to the left and right edges of the guide plate (51). This increases the strength of the guide plates (51) of the pawl bodies (43) such that damage to the pawl bodies (43) as a result of collisions with other members or the like can be prevented, and enables banknotes to be guided smoothly in the banknote pay-in/pay-out device (10).

A conveying apparatus includes: a rotation shaft; a conveying roller secured to the rotation shaft; a driven roller that cooperates with the conveying roller to convey a sheet at a nip position; a supporter supporting the rotation shaft rotatably; and a first guide and a second guide opposed to each other and defining a conveyance path guiding the sheet toward the nip position. The first guide and the second guide respectively have first and second guide surfaces defining the conveyance path. The first guide and the second guide respectively have first and second engaging portions engaged with the rotation shaft at positions different from a position of the supporter in the axial direction of the rotation shaft.

An image forming apparatus having a duplex conveyer is provided. The duplex conveyer includes a first roller and a second roller arranged in an area closer to a first side surface of a body rather than a second side surface to align along a widthwise direction, a third roller and a fourth roller arranged to contact the first roller and the second roller respectively, an upper guide supporting the first roller and the second roller, and a lower guide arranged to face the upper guide at a position lower than the upper guide. The upper guide has a recessed portion at a position between the first roller and the second roller. The recessed portion recesses from an end of the upper guide on a side facing the first side surface toward the second side surface beyond an axis of the first roller.

An image forming apparatus, including a reference guide, an oblique conveyer roller, and a curve guide, is provided. The reference guide is arranged on one side in a widthwise direction with respect to a widthwise center in a sheet conveyer path and regulates a widthwise position of the sheet. The oblique conveyer roller applies a conveying force acting in a direction toward downstream along a conveying direction and toward the reference guide to the sheet. The curve guide is arranged upstream with respect to the oblique conveyer roller along the conveying direction and forms a curve. The curve guide includes an inner guide and an outer guide. The outer guide has a constant curvature throughout a width regardless of a widthwise position therein. The inner guide has a protrusive portion protruding toward the outer guide at a position on the other side in the widthwise direction with respect to the widthwise center.

A post processing apparatus includes a post processing unit that performs a post process on a sheet of paper, a duct, and a blower that blows an airflow to the duct. The post processing apparatus has a transport path through which the sheet is transported toward the post processing unit. The duct is provided in a width direction of the transport path. The duct has a slit formed in a sheet width direction, and the airflow having been blown by the blower is blown through the slit toward the sheet transported to the post processing apparatus.

A sheet discharge apparatus includes a first conveyance guide having a plurality of first ribs and rotatably supporting a drive roller, with the plurality of first ribs guiding a sheet, and a second conveyance guide to support a holder member movably in a separating direction where the holder member separates from the drive roller. The second conveyance guide includes a plurality of second ribs which form a conveyance path, together with the first ribs, through which the sheet passes, and a regulation portion to regulate movement of the holder member within a range of a first distance in the separating direction from a position where a driven roller is in contact with the drive roller, wherein the first distance is smaller than a second distance which is a distance between the first ribs and the second ribs in the separating direction.