Open Date Digi-3-Coder Operator Instructions Manual page 14

Digi-3-Coder (Issue 1.2)
Digi-3-Coder Initial Setting Procedure (continued)
Print Dwell Adjustment
• Normal setting is about 120 milli-seconds.
•
• Generally, the larger the print, the higher the setting.
•
• Should the print not adhere fully to the substrate, a higher setting may be used.
•
• 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.
•
• 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
The airflow restrictors are usually attached to the solenoid valve exhaust ports. They
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 print
ram velocity (speed), it 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.
For higher speed operation, the exhaust airflow from both the forward and return
strokes will have to be increased.
6 October 2005
(See pages 15 &16)
(See pages 8 &12 )
Page 14