Page
38
of
73
VastraJet K2
HORIZONTAL CALIBRATION
Horizontal calibration checks the bi-directional, left, and right alignment and corrects it by adding or subtracting the
correction value from the default set value. It has to be performed for each print mode, whichever is
required. Let’s
explain each type of horizontal test one by one.
Bi-direction Calibration
Bi-
directional calibration is performed to achieve dot placement accuracy between the “Left to Right” and “Right to
Left” print sweeps. If the bi
-direction offset value is correct, the Left to Right test print would align accurately with
the Right to Left test print at
“0”
position. In case of error in the Bi-Direction offset, the Left to Right and Right to Left
print would align at some other point on the scale.
The Bi-direction Calibration result is shown in the image below:
Fig 46: The Bi-Direction Calibration Output
Based on the above figure, you can notice that the Bi-direction calibration is good at
“
-1
0”
position. The correction
value is
“
-1
0”
which means you need subtract 10 to correct the bi-direction value. Sometimes, the correction value
can either positive or negative. If the correction value is positive, then you need to add it in the current bi-direction
adjust value or subtract the same if negative.