A device for treating substrates has a separation system, with which processed substrates can be separated into one or more waste parts and at least one blank. The device for treating substrates offers improved flexibility. The separation system comprises a transport cylinder and a stripping cylinder associated therewith. The transport cylinder is able to secure replaceable packing, along with first and second openings which, when the packing is secured, are covered at least partially by perforations that may be formed in the packing. A first air supply supplies air to the first openings and a second air supply supplies air to the second openings independently of the supply of the air to the first openings. The first and the second air supply are switchable between a suction air supply and a blower air supply.

A stripping device for stripping sheet-shaped objects from a roller includes at least one stripper. The stripper is mounted rotatably about a bearing and includes stripping portion configured to be tapering to a point and a support portion which is different from the stripping portion. The stripping portion and the support portion are arranged relative to each other and the stripper is mounted such that, when the stripper is pressed against the roller with prestressing during operation, the stripper has two mutually spaced apart contact points with the roller, which contact points are defined by the stripping portion and the support portion of the stripper.

A stripping device for stripping sheet-shaped objects from a roller includes at least one stripper. The stripper is mounted rotatably about a bearing and includes stripping portion configured to be tapering to a point and a support portion which is different from the stripping portion. The stripping portion and the support portion are arranged relative to each other and the stripper is mounted such that, when the stripper is pressed against the roller with prestressing during operation, the stripper has two mutually spaced apart contact points with the roller, which contact points are defined by the stripping portion and the support portion of the stripper.

The invention relates to a sheet depositing arrangement. The sheet depositing arrangement comprises at least one sheet depositing apparatus having a sheet stacking chamber for creating a sheet stack, and a sheet extraction device which in turn has a sheet transporting means that is drivable in a direction of circulation, a sheet delivery region for delivering the sheets to be stacked to the sheet stacking chamber, a sheet stacking region, provided downstream of the sheet delivery region, for stacking the sheets to be stacked into the sheet stacking chamber, and a return region, provided downstream of the sheet stacking region. Furthermore, the sheet depositing apparatus has a sheet retaining device with at least one sheet retaining element, arranged adjacent to the sheet stacking region, for preventing at least one sheet to be stacked from being drawn into the sheet extraction device from the sheet stacking chamber by the sheet transporting means.

A printing system includes an endless metal transport belt for transporting sheets in a transport direction, wherein the metal transport belt comprises multiple through holes through which an underpressure or overpressure may be applied on the sheets, a sheet separation system for separating the sheets from the metal transport belt by applying a local overpressure, and a sheet separation guide which guides the separated sheets away from the metal transport belt. The sheet separation system includes a stationary sliding surface, wherein the metal transport belt slides over the stationary sliding surface, wherein the stationary sliding surface includes a number of blow holes which define the overpressure zone, and wherein the blow holes are configured to apply a local overpressure in the overpressure zone through the metal transport belt onto the underside of the sheets. The overpressure zone is formed in the curved part of the stationary sliding surface, wherein the overpressure zone has an upstream end and a downstream end, which are defined by the location of the blow holes, and wherein the sheet separation guide directly adjoins the overpressure zone at the downstream end thereof.

A printing system includes an endless metal transport belt for transporting sheets in a transport direction, wherein the metal transport belt comprises multiple through holes through which an underpressure or overpressure may be applied on the sheets, a sheet separation system for separating the sheets from the metal transport belt by applying a local overpressure, and a sheet separation guide which guides the separated sheets away from the metal transport belt. The sheet separation system includes a stationary sliding surface, wherein the metal transport belt slides over the stationary sliding surface, wherein the stationary sliding surface includes a number of blow holes which define the overpressure zone, and wherein the blow holes are configured to apply a local overpressure in the overpressure zone through the metal transport belt onto the underside of the sheets. The overpressure zone is formed in the curved part of the stationary sliding surface, wherein the overpressure zone has an upstream end and a downstream end, which are defined by the location of the blow holes, and wherein the sheet separation guide directly adjoins the overpressure zone at the downstream end thereof.

A workpiece processing apparatus that prevents a processing capability of a processing apparatus from deteriorating due to a peeling unit that peels a protective sheet from a workpiece. A workpiece processing apparatus includes an affixing unit that affixes a dicing tape to a workpiece and a dicing frame, and a plurality of peeling units that peel a protective sheet previously affixed to the workpiece from the workpiece integrated with the dicing frame via the dicing tape.

A workpiece processing apparatus that prevents a processing capability of a processing apparatus from deteriorating due to a peeling unit that peels a protective sheet from a workpiece. A workpiece processing apparatus includes an affixing unit that affixes a dicing tape to a workpiece and a dicing frame, and a plurality of peeling units that peel a protective sheet previously affixed to the workpiece from the workpiece integrated with the dicing frame via the dicing tape.

A sheet transport system comprising an endless carrier belt that has a predetermined stiffness and is arranged to carry the sheets towards an end of a conveyer path where the sheet is separated from the carrier belt by passing this belt around a separating member that has a predetermined curvature, wherein the carrier belt runs in parallel with an endless conveyer that has a larger stiffness than the carrier belt and, at the end of the conveyer path, has a smaller curvature than the separating member.

A sheet transport system comprising an endless carrier belt that has a predetermined stiffness and is arranged to carry the sheets towards an end of a conveyer path where the sheet is separated from the carrier belt by passing this belt around a separating member that has a predetermined curvature, wherein the carrier belt runs in parallel with an endless conveyer that has a larger stiffness than the carrier belt and, at the end of the conveyer path, has a smaller curvature than the separating member.