In some examples, a sheet processing machine includes at least one transport means of an infeed system, and the infeed system includes at least one cam mechanism including, in each case, at least one cam disk having an axis of rotation. At least one scanning element is arranged in each case to rest against the at least one cam disk. The at least one scanning element is connected to the at least one transport means via at least one drive lever. The at least one drive lever in each case has at least one mounting point. The mounting point and the axis of rotation may be adjusted relative to one another, and a position displacement of the mounting point relative to the axis of rotation may compensate for at least one position error of the at least one sheet.

An image forming apparatus includes: a rotating body having a recess in an outer peripheral surface thereof; a sprocket provided coaxially with the rotating body to rotate integrally with the rotating body; a chain having plural links, the chain being wound around the sprocket to circulate in a circulating direction so as to shift from a rotary movement in which the chain rotates in an arc shape conforming to an outer periphery of the sprocket along with the sprocket, to a linear movement; a holder fixed to at least one link of the links of the chain, the holder being configured to hold a leading end portion of a recording medium, the holder being configured to transport the recording medium by performing the rotary movement along with the rotating body and the chain in a state of (i) holding the leading end portion of the recording medium placed on the outer peripheral surface of the rotating body and (ii) being located in the recess, and then shifting to the linear movement along with the chain; and an image forming unit configured to form an image on the recording medium placed on the outer peripheral surface of the rotating body, in which a holding position where the holder holds the recording medium is arranged downstream of an upstream roller of rollers of a most downstream link in the circulating direction among the at least one link to which the holder is fixed.

In some examples, a die-cutting machine includes a transport system configured as a chain gripper system. The chain gripper system includes a chain gripper carriage including a holding element for holding a sheet. The chain gripper carriage is arranged to be attached to at least one chain that is arranged to guide the chain gripper carriage on a guide path through at least part of the die-cutting machine. The chain gripper carriage includes a contact element functionally connected to the holding element. A chain gripper opener includes a contact surface at which, in the presence of the gripper carriage at the contact surface, the contact element cooperates with the chain gripper opener. The holding element is transferred at least from a closed position into an open position by cooperation of the chain gripper opener with the contact element. The chain gripper opener is adjustable by at least one drive.

A heating device includes a heating unit that heats in a non-contact manner an upper surface of a transport material that is transported, and a blowing unit that blows air against a lower surface of the transport material via a blowing hole that is provided in an opposing surface opposing the lower surface of the transport material, the opposing surface being obliquely disposed with respect to a horizontal direction.

A sheet conveying device includes a tray, an elevating mechanism, a conveyance roller, and a resistance member. The tray stacks a plurality of sheets. The elevating mechanism lifts and lowers the tray in the stacking direction of a plurality of sheets. The conveyance roller conveys the plurality of sheets in the conveyance direction from the upper side in the stacking direction. The resistance member comes into contact with the leading ends of the plurality of sheets in the conveyance direction. The resistance member imparts a sliding resistance larger than that of the sheet stacking surface of the tray to the leading ends of the plurality of sheets that are lifted and lowered by the elevating mechanism.

A transport device includes a transport unit that transports a sheet-like transport material without holding a one-end-side portion of the transport material in a transport direction; and a blowing unit that blows air against a lower surface of the transport material that is transported by the transport unit via multiple blowing holes that open with respect to the lower surface, an arrangement interval of the multiple blowing holes in the transport direction being inconstant in the transport direction.

According to one embodiment, the sheet conveying device includes a tray, an elevating mechanism, a conveyance roller, and a resistance member. The tray stacks a plurality of sheets. The elevating mechanism lifts and lowers the tray in the stacking direction of a plurality of sheets. The conveyance roller conveys the plurality of sheets in the conveyance direction from the upper side in the stacking direction. The resistance member comes into contact with the leading ends of the plurality of sheets in the conveyance direction. The resistance member imparts a sliding resistance larger than that of the sheet stacking surface of the tray to the leading ends of the plurality of sheets that are lifted and lowered by the elevating mechanism.

A transport device includes a transport unit that transports a sheet-like transport material without holding a one-end-side portion of the transport material in a transport direction; and a blowing unit that blows air against a lower surface of the transport material that is transported by the transport unit via multiple blowing holes that open with respect to the lower surface, an arrangement interval of the multiple blowing holes in a direction of intersection with respect to the transport direction being smaller at two end portions than at a central portion of the blowing unit.

An image forming apparatus includes: a rotating body having a recess in an outer peripheral surface thereof; a sprocket provided coaxially with the rotating body to rotate integrally with the rotating body; a chain having plural links, the chain being wound around the sprocket to circulate in a circulating direction so as to shift from a rotary movement in which the chain rotates in an arc shape conforming to an outer periphery of the sprocket along with the sprocket, to a linear movement; a holder fixed to at least one link of the links of the chain, the holder being configured to hold a leading end portion of a recording medium, the holder being configured to transport the recording medium by performing the rotary movement along with the rotating body and the chain in a state of (i) holding the leading end portion of the recording medium placed on the outer peripheral surface of the rotating body and (ii) being located in the recess, and then shifting to the linear movement along with the chain; and an image forming unit configured to form an image on the recording medium placed on the outer peripheral surface of the rotating body, in which a holding position where the holder holds the recording medium is arranged downstream of an upstream roller of rollers of a most downstream link in the circulating direction among the at least one link to which the holder is fixed.

A cylinder member includes: a cylinder body having a cylindrical shape; a sheet member wound on the cylinder body; a first attachment portion provided at one end portion of the sheet member in a circumferential direction, the first attachment portion being detachably attached to the cylinder body; and a second attachment portion provided at the other end portion of the sheet member in the circumferential direction, the second attachment portion being detachably attached to the cylinder body.