Sheet transport device
OwnerIngo Neuber, Frank Nagel +1inventors
InventorsIngo Neuber, Frank Nagel, Soenke Dehn
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Abstract
The invention relates to a sheet transport device, preferably for arrangement on the sheet-delivery side of a printing machine, including at least two rollers that are axis-parallel with respect to each other and form between them a transport gap for the sheets for a reversible deformation and stiffening of the sheets respectively transported between them. The rollers are such that a sheet which exceeds a specific intrinsic stiffness is able to move the rollers apart against the applied force in order to avoid said sheet's deformation and/or in order to enlarge the diameter of the second roller, viewed in side elevation of the second roller, a rounded transition has been implemented in at least one section.
Claims16
Sheet transport device, preferably for arrangement on the sheet-delivery side of a printing machine, specifically an electrophotographically operating printing machine, comprising:
- at least two rollers that are axis-parallel with respect to each other and form between them a transport gap for the sheets, the relative distance between said rollers being variable in that the rollers and/or zones of the rollers can be crossed or staggered relative to each other for a reversible deformation and stiffening of sheets respectively transported between them, and a force being applied toward a magnification or increase of said crossing of the rollers and/or the roller zones, and the deformation of the sheet being pre-specified, characterized in that the rollers are arranged and configured and the application of force is set or selected in such a manner that a sheet which exceeds a specific intrinsic stiffness is able to move the rollers apart against the applied force in order to avoid said sheet's deformation.
Sheet transport device, preferably for arrangement on the sheet-delivery side of a printing machine, specifically an electrophotographically operating printing machine, comprising:
- at least two rollers that are axis-parallel with respect to each other and form between them a transport gap for the sheets, said two rollers having profiles that are in engagement with each other in the transport gap, whereby the profile of a first roller has a reduced diameter in a central region, while the profile of a second roller has an enlarged diameter in an approximately corresponding region such that the profile engagement can serve for stiffening a respective sheet transported through the transport gap, characterized in that, in order to enlarge the diameter of the second roller, viewed in side elevation of the second roller, a rounded transition has been implemented in at least one section.
Dependencies are inferred from the claim text.