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63 User Manual
Troubleshooting
FC35 Gutter Problems
The faults which can occur in the gutter line are as follows:
- blocked gutter which can be due to:
incorrect shutdown not purging the gutter;
printhead mounted lower than the printer (causing siphoning effect);
- ink leaking from the gutter during a period of non-use:
printhead mounted lower than the printer (causing siphoning effect).
- poor gutter action (inadequate suction):
very thick ink, e.g. pressure is 40 points above the reference pressure value.
If you suspect a gutter blockage, do not attempt to clear it yourself; contact EC-JET or your local
distributor.
FC36 Vibration Problems
Vibration can cause a number of problems, the most prominent of which are described here.
Diagnosis
Poor print quality is the most common indicator of vibration problems. This is because the print drops
are relatively stable while in flight, so vibration in either the product being marked or the printhead itself,
will result in the drops being misplaced or obstructed.
The various types of vibration and their effects are described in the following:
Product Vibration/Tilting
The product can tilt from one side to the other, either along the axis of the conveyor travel or at 90
degrees to it (i.e. across the conveyor width).
When the product tilts along the axis of the conveyor travel, the width of some characters will be
contracted and some expanded, as the product tilts first one way then the other.
Similarly, when the product tilts at 90 degrees to the axis of the conveyor travel, the height of some
characters will be contracted and some expanded, as the product tilts first one way then the other.
This is shown in the following illustrations:
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