The present invention relates to a device for treating substrates which device is modular and versatile in use. The device for treating substrates comprises a feeder and one or more first sub-structure modules which each comprise a pressure cylinder with devices for fixing a lift and a sheet-conveying device and one or more second sub-structure modules which respectively have a transport cylinder with openings formed on the cover surface thereof, and having devices for fixing a lift and a sheet conveying device. All of the first or second sub-structure modules have the same intersection point for connecting the sub-structure modules on one of the inlet and the exit side and they all can be equipped with an attachment module.

An actuator system for maintaining high nip forces at a roller nip is disclosed. The actuator system includes a primary actuator for urging a roller into an engaged position at which the roller contributes to providing the high nip forces at the roller nip, the primary actuator being provided attached to a movable mounting structure, and a secondary actuator for maintaining the mounting structure in a locked position, and for releasing the mounting structure, and therefore the primary actuator, from the locked position in the event of a power loss to the secondary actuator.

A sheet-transporting element includes suction openings for holding print sheets, longitudinal sliders including air passages, and transverse sliders including air passages. The longitudinal sliders and the transverse sliders are disposed in a cross-wise configuration and are movable into different positions corresponding to various sheet formats in the positions blocking selected ones of the suction openings.

A sheet handling apparatus for a printing system includes a rotary drum having an inner chamber circumferentially surrounded by an outer peripheral wall with perforations formed therein. By means of sucking an air flow through the perforations of the drum to a suction system, sheets are attracted to the peripheral wall of the drum. A stationary shutter member is positioned inside the inner chamber for blocking the flow of air through the perforations when they pass, with the rotation of the drum, through a first predetermined angular range. The shutter member includes protrusions while the rotary drum includes recesses for receiving the protrusions, such that a meandering air flow passage is formed between the shutter member and the rotary drum. As such, friction between the rotary drum and the stationary shutter member is reduced, thereby reducing the power consumption of the suction system.

The disclosure relates to a method and apparatus that separates and efficiently captures from an automated cutting table select pieces of thin, flexible material in an orderly manner which prevents damage to the selected piece while preventing the undesired lifting or movement of the surrounding material. The apparatus comprises a pick head assembly including a cylinder with a plurality of orifices that communicates with the selected piece to maintain contact between the selected piece and the cylindrical surface while the selected piece is being removed.

A sheet-transporting element includes suction openings for holding print sheets, longitudinal sliders including air passages, and transverse sliders including air passages. The longitudinal sliders and the transverse sliders are disposed in a cross-wise configuration and are movable into different positions corresponding to various sheet formats in the positions blocking selected ones of the suction openings.

A sheet conveyor includes: a drum to: carry a sheet on a circumferential surface of the drum; and rotate to convey the sheet; and adhering part to adhere the sheet to the circumferential surface of the drum, wherein the drum has: both end parts in an axial direction of the drum, the both end parts each having a first outer diameter in a radial direction orthogonal to the axial direction; and a center part between the both end parts in the axial direction of the drum, the center part having a second outer diameter smaller than the first outer diameter in the radial direction.

A media conveying device includes: a delivery cylinder to rotate on an inner circumferential surface side of a medium conveyed along a curved conveyance path; a first guide disc to rotate integrally with the delivery cylinder on an inner circumferential surface side of the curved conveyance path, the first guide disc having an arc-shaped guide surface to come into contact with a first peripheral area of the medium in a width direction of the medium; a second guide disc to rotate integrally with the delivery cylinder on the inner circumferential surface side of the curved conveyance path, the second guide disc having an arc-shaped guide surface to come into contact with a second peripheral area of the medium in the width direction of the medium; and a slide mechanism to slide the first guide disc and the second guide disc in the width direction of the medium.

A sheet handling apparatus for a printing system includes a rotary drum having an inner chamber circumferentially surrounded by an outer peripheral wall with perforations formed therein. By means of sucking an air flow through the perforations of the drum to a suction system, sheets are attracted to the peripheral wall of the drum. A stationary shutter member is positioned inside the inner chamber for blocking the flow of air through the perforations when they pass, with the rotation of the drum, through a first predetermined angular range. The shutter member includes protrusions while the rotary drum includes recesses for receiving the protrusions, such that a meandering air flow passage is formed between the shutter member and the rotary drum. As such, friction between the rotary drum and the stationary shutter member is reduced, thereby reducing the power consumption of the suction system.

A paper conveying apparatus includes: a driving device which rotates a driving rotating body by driving force; a conveying device which conveys a paper along a conveyance path according to rotation of a driven rotating body; an endless drive transmission belt which is stretched to the driving rotating body and the driven rotating body; a conveyance amount detecting device which detects a conveyance amount of the paper; an abnormality detecting device which detects abnormality of the paper; a stopping device which stops the driving device when the abnormality is detected; a calculating device which calculates the conveyance amount in time before conveyance stops after the abnormality is detected; a degradation detecting device which compares the calculated conveyance amount and a threshold and determines that the drive transmission belt is degraded if the calculated conveyance amount is larger than the threshold; and a reporting device which reports a determination result.