DATAPROCESS EUROPE S.p.A.
ST 230 USER MANUAL Pag.
36
fine adjustment, respectively to up and down of
10mW
each time.
Each key pression a test label is printed that shows the variation.
It is always advisable to operate at the minimum speed in case of rough
temperature adjustments to avoid any possible burns of the ribbon during the
passage of values. Now exit to the configuration mode (as described in paragraph
13.8) in order to execute the modifications programmed.
13.14 LABEL CALIBRATION
Select the printer in configuration mode (as described in paragraph 13.8) then
press the
FEED
key. Two white labels are ejected and
than a test label is printed containing all the values of
parameters
P
and
H
updated referring to the kind and
length of the label correctly mounted on the printer.
Value
P
is proportional to the transparency of the used
material, measured before feeding paper : it is important that in case of pre-printed
labels the paper is initially positioned in the way that under the sensor is present a
light zone and that the sensor is not reading on the gap between labels. Valid
values of
P
are from
52
to
255
(normally from
60
to
120
), whilst extreme values of
51
or
256
indicate generally a malfunctioning, due to the absence or excess of
sensored light. Values near or exceeding
200
indicate a wrong starting position of
the paper (reading on the gap between the labels) or the use of materials very
transparent that can constitute a problem for a correct step maintaining.
The value
H
represents the feed paper (in dots) made from when the edge of the
label has been detected by the sensor, to correctly align the label under the print-
head: these value changes relating to the height of the labels in use. The printer
calculates automatically with a certain approximation (generally less) the value
adapt to start printing from the upper edge of the label.
In case the
FEED
key is kept pressed, after ejecting the two white labels and
before the test print-out, the paper is fed slowly, increasing the value of H and,
therefore, lowering the starting point with respect of the edge till the key is left. This
is useful to make a fine adjustment and to find the correct label stop position to
allow the easy detachment in case of dispensing mode (with silicon paper
rewinding). In case of use of different label formats with frequent passage from one
to the other it is not easy to make a new adjustment at each label format: it is
advisable in this case to take note of
P
and
H
value reached initially for each used
+ 10 mW
- 10 mW
