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Operation
To set constant print speed
The print speed of the print heads must match the conveyor belt speed; otherwise print
images may be distorted.
There are 2 ways to match the print speed to the conveyor belt speed:
Internal constant print speed
External variable print speed via rotary encoder
The setting of internal / external speed can be set as described under Chapter
Internal Pulse / Encoder, Page 103.
If no rotary encoder is connected to the controller, the conveyor belt speed must be
measured or estimated and the determined value entered as a parameter. A test image
can then be used for fine-tuning the print speed.
The following parameters must be entered:
Print speed
Print speed = Conveyor belt speed. The conveyor belt speed must remain
constant!
Print intensity
Print image contrast. If necessary, this parameter may have to be changed to
optimise the print image to the product surface. Higher intensity means increased
density and slower drying of the ink. Default value for HP and LX is 300dpi,
192dpi for MX.
Zoom
This parameter enables an increase or decrease of the number of pixels. This
renders the print image wider or narrower.
The maximum speed depends on the intensity:
At 600 dpi the print speed may be up to 30 m/min.
At 300 dpi the print speed may be up to 60 m/min.
At 200 dpi the print speed may be up to 90 m/min.
At 150 dpi the print speed may be up to 120 m/min.
A print speed 50% higher can be obtained with a rotary transducer.
This setting lies outside the specification and must be carefully tested!
A double speed can be reached with the High Speed function by the Markoprint X4JET
Pro version. At a resolution up to 300x300dpi the print speed may up to 180 m/min.
The text length is up to 3 times longer.
Parameter
Print speed
Print intensity
Printing width
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72800115 Markoprint X4JET
Min.
Max.
Unit
1
400
m/min
50
900
dpi
10
900
%
GB
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