Mod. 6609d-6612d:
Automatic Forms Cutter
13.12.2006
-10-
2.3.3 Automatic positioning of the forms
After the paper has ben inserted, series 6600 forms cutters position the forms automatically at the bl ade edge on
starting or on changing programs. The central paper guide contains a light-guide fibre optics system, which has two
functions:
1. Recognising end-of-paper
2. Automatic positioning of paper on the cutting edge
If the paper is inserted in the tractors in such a way that it does not reach the optical scanner, the tractors will
transport the paper automatically forwards to the scanner after the
Start
button has been pressed, and then under
the cross blade for the first cut.
If the paper is inserted in such a way that it already covers the optical scanner, the tractors will m ove in reverse
direction to the scanner after the
Start
button has been pressed and then forwards under the cross blade.
Due to this automatic positioning the paper can be inserted without any need to position it accurately. Before paper
is inserted in the machine, it is important to chec k that the leading edge of the paper has been clean ly torn off at the
cross-perforation. This is necessary because, due to the automatic positioning of the paper on the cutting edge, the
forms will otherwise not be cut exactly on the cross-perforation.
The machine automatically recognizes the leading edge of the paper and transports it immediately to the cutting
edge. If the leading edge is damaged or if a piece has already been cut off, the machine will not position the paper
correctly with the cross-perforation on the blade e dge. Any correction made using the fine adjustment control will be
automatically applied each time paper is inserted.
We recommend that you tear off one sheet of paper before every new start. This also helps to prevent j amming due
to the cuts made by the edge blades.
Caution!
The end-of-paper light barrier must not be covered by the paper-holder as this means the
paper cannot be detected.
On starting, the machine would run in reverse direction and would eject the paper in reverse
direction into the tractor.
If the paper-holder becomes twisted during continuous operation so that it covers the light
barrier, the forms cutter will not stop at the end of the paper.