Page
40
of
73
VastraJet K2
STEP CALIBRATION
The printer step calibration is performed to verify and correct fabric feeding. The printer prints a complete image
pass by pass. A pass is the horizontal carriage sweep perpendicular to the fabric movement. After each pass the
printer moves the fabric forward for the next pass. This movement of fabric is called a step. The distance by which
the fabric 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 fabric 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 48: 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 its parameters are shown in the image below:
Fig 49: Displaying the Step Calibration Parameters
Follow these steps to perform step calibration:
Step 1:
Select the desired pass from the list and click on the
button (Refer to Fig 49).
Step 2:
Feed the correction value in the
Revise
field (the correction value up to two decimal places) (Refer to Fig 49).
Note:
If lines are not matching exactly in one line in any of the numbers in the printed pattern. Then, we have to
select decimal values between two nearest matching numbers. For example, nearest matching values are 0 and 1
then we can select in between 0.1 and 0.9.
