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VASTRAJET
Step Calibration
The printer step calibration is performed to verify and correct media feeding. The printer prints a complete
image pass by pass. A pass is the horizontal carriage sweep perpendicular to the media movement. After
each pass the printer moves the media forward for the next pass. This movement of media is called a step.
The distance by which the media is moved is called the step size and it has to be accurate. Step size errors
cause horizontal white or dark bands to appear in the print output.
Step size needs to be adjusted for multiple factors like thickness and roughness of the print media etc. Step
calibration should be used to fine adjust the step size and has to be done for each desired pass.
The Step Calibration result image is shown as below:
Fig 67: Displaying the Output of the Step Calibration
From the above figure, you get the accurate step adjust correction value. The correction value is either
positive or negative. If the value is positive, then add it in the current step adjust value for the Print Head
calibration. On the other hand, if the value is negative, then subtract the value from the current step adjust
value. From the above, you can conclude that the pattern is corrected at
“0”
position.
The Step Calibration and
it’s
parameters are shown in the image below:
Fig 68: The Step Calibration Parameters
Note:
Approximate Base Step value should be 14600.
Follow these steps to perform step calibration:
Step 1:
Select the desired pass from the list and click on the
button (Refer to Fig 67).
Step 2:
Feed the correction value in the
Revise
field (the correction value up to two decimal places) (Refer
to Fig 67).
Step 3:
Click on the
=>
icon (Refer to Fig 67) on the Step Calibration window. The correction value result will
be reflected in the
Step
field (Refer to Fig 67). The same step value will also be displayed in the
Steps
field
on the
Quick Access Toolbar
.
