Eurocode Digi50 Controller V1.03 04/07/2005 Page - 11 -
Initial Setting Procedure
(continued)
Print Dwell Adjustment (refer to page 5)
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Normal setting is about 120 milli-seconds.
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Generally, the larger the print, the higher the setting.
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Should the print not adhere fully to the substrate, a higher setting may be used.
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Remember, the printhead can only operate during the stationary cycle of the web, if
the print time is longer than this the web may break.
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Should the dwell time have to be decreased to accommodate higher production
speeds, it may be necessary to compensate by increasing the temperature setting.
Air Flow Controls (refer to page 12)
The airflow restrictors are usually attached to the solenoid valve exhaust ports. The
work by regulating the speed at which air is exhausted from the air cylinder.
Turning the adjusting screws will alter the exhaust airflow and consequently the prin
ram velocity (speed), will also affect noise levels.
Increasing the exhaust airflow from the forward stroke of the print ram will increase the
print pressure. Decreasing the exhaust airflow will reduce print pressure and the
resulting print will be lighter.
The drive for the printing foil is taken from the return stroke of the print ram. Increasing
the exhaust airflow will speed up the foil feed. To ensure efficient foil feeding, the return
stroke should be as gentle as possible.
For higher speed operation, the exhaust airflow from both the forward and return
strokes will have to be increased.
Note !!
It is very important that the print ram returns fully before the next print cycle
commences
.
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