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Changing the electronic black mark

When the operator has set up the DLP-2000 for a new job and the time has come for a test run,
it is at this stage that the operator will determine the correct or suitable running speed of the
job. Once the desired speed has been set the operator will need to check that the machine is
ramping down correctly, before it stops to perform a cutting cycle.
 Ramp down is a slowing down of the machine, to allow an accurate stop point. It is required for
accuracy of registration as it allows the brake of the drive motor time to stop without passing
the mark because of the inertia of the machine. A small ramp down is all that is required and a
change in speed should be detected easily by the laser. In most instances a lack of ramp down
will occur when a machine is being run at full speed on a label longer than 6” or 152mm.

If a ramp down is not detected it is likely that the speed of the machine is too fast for the
“electronic black mark” setting. This will create a registration inaccuracy. It is a simple program
adjustment, to increase the length of the electronic black mark, to allow for the ramp down.
Alternatively the speed can simply be turned down, however this may not be desirable, as the
DLP may be running in line with a printer and the speed of the DLP-2000 should ideally be
slightly faster than the running speed of the printer.

The following steps will allow for the quick and easy lengthening or shortening of the electronic
black mark, to ensure the optimum running speed and accuracy.
o
Press JUMP + 4 to access the encoder settings menu.
o
Press the Options key to access the Encoder Mark settings screen
o
Highlight the mark length setting by pressing the down arrow key
o
Alter the setting with the numeric keys and press enter to save the setting
o
Test run the machine to determine whether the new setting has been sufficient to effect
a visible ramp down
Registration on the DLP-2000 is accurate because of the machines ability to sense the
distance the paper has travelled through the machine and then slow down to stop at a
pre-determined distance. The “slow-down” or “ramp down” in speed is critical to the
accuracy of the machine. The following are steps to ensure there is sufficient “ramp
down”