Cutting device for cutting a printing material in the printing unit of a printing device
AssigneeOce Printing Systems GmbH
InventorsMichael Ullrich, Stefan Brecht, Friedrich Meschenmoser
Life of this patent
Estimating the term…
Abstract
In electrographic printing devices which print a printing material, for example paper webs, there exists a problem in the case of a malfunction that the printing material has to be removed from the printing unit as this occurs it should be avoided that drive rollers for the printing material are dirtied by non-fixed toner images. To avoid this, a cutting device is provided that presents a reel cutter that is guided in a guide groove of a guide tube. When a malfunction occurs, the cutting device is activated, the reel cutter cuts the printing material, and the cut sections of the printing material are pulled out of the printing unit separately.
Claims16
A cutting device for cutting a printing material in a printing unit of a printing device, comprising:
- a reel cutter arranged on a push rod, the push rod being slidably mounted to a guide tube arranged parallel and adjacent to the printing material;
- the guide tube having in a longitudinal direction a guide groove which ends at one end in a transverse groove such that the reel cutter is hinged down in a parking position;
- and
- for cutting the printing material, the reel cutter is moveable in a rotary motion to the guide groove and in the guide groove along the printing material, cutting reels of the reel cutter grasping the printing material.
A printing device, comprising:
- a printing unit for printing a web-shaped printing material;
- a feeder for feeding the printing material to the printing unit;
- and
- a cutting device for cutting the printing material in order to remove the printing material from the printing device, the cutting device being arranged before the printing unit as viewed in a transport direction of the printing material.
The continuous form printer, comprising:
- a printing unit for printing a continuous web-shaped printing material;
- a cutting device integrated with a continuous form printer for cutting the web-shaped printing material in case of a malfunction in order to facilitate paper removal;
- and
- said cutting device being positioned upstream from said printing unit.
A printing device, comprising:
- a printing unit for printing a web-shaped printing material;
- a feeder for feeding the printing material to the printing unit;
- a cutting device between the printing unit and the feeder for cutting the printing material in order to remove the printing material from the printing device in the event of a malfunction;
- and
- the cutting device comprising a reel cutter which moves transversely across the web-shaped printing material, the reel cutter being mounted to a guide unit.
A method for removing a web-shaped printing material from a printing device when a malfunction occurs, said printing device having a printing unit, comprising the steps of:
- positioning a cutting unit upstream of the printing unit;
- and
- when the malfunction occurs, activating the cutting device to cut the printing material transversely to its running direction and then pulling a downstream portion of the printing material in a downstream direction away from the printing unit and also pulling an upstream portion of the material away from the printing unit in an upstream direction.
Dependencies are inferred from the claim text.