SATO CL408e - Manual (Page 56)

GAP [X.XV]
INPUT [X.XV]
The “e” Series printers determine the location of the leading
edge of the label by measuring the difference between light
levels when it sees either a label edge or a black “EYE” mark.
This adjustment allows you to manually set the threshold
voltage level, between the maximum and minimum light levels.
DIP switch DSW2-2 selects the sensor type. If DSW2-2 is in
the OFF position, the setting will be for a See-Thru (or Gap)
sensor and the LCD will display “GAP” on the top line along
with the current setting. If DSW2-2 is in the ON position, the
LCD will display “EYE” on the top line with its current setting. If
the value entered for the bottom line setting is “0.0V”, then the
printer will automatically calculate the setting when the first
label is fed after the printer is powered on or the head is
closed. There are some instances where the automatically
calculated value must be adjusted to ensure reliable label
feeding, such as when the backing opacity or the reflectance
of the EYE mark varies significantly within a roll of labels or
between label rolls. In these instances the value should be set
using the following procedures.
GAP [X.XV]
INPUT [X.XV]
GAP - When setting the “gap” threshold, the voltage shown on
the top line of the display must be measured with nothing but
the backing in the sensor and then again with a label still
attached to the backing. The formula to be used for setting the
threshold is:
(High Voltage Level + Low Voltage Level) x 0.5 = Start Value
1. Insert a label still attached to the backing into the sensor
and close the Label Hold-Down. Record the voltage
shown on the top line of the LCD panel. This line should
have the message “GAP” on the top line (DIP switch
DSW2-2 = OFF). Make sure the label is all the way under
the sensor.
2. Strip the label from the backing and insert the backing
strip under the sensor and close the Label Lid. Record the
voltage shown on the top line of the LCD panel. The
voltage ranges measured should be within the following
range
Backing without label = 0.5V or less
Backing with label = 1.0V
≥
the low value
If the measured values are outside this range, you may
have trouble in finding a value that will work properly
under all conditions. If this is the case, a higher quality
label may be needed to get adequate performance.
3. Calculate the starting point voltage using the formula.
4. Use the LINE key to step the counter to the desired
setting. The display will increment one step for each time
the LINE key is pressed. If the LINE key is held pressed
for more than two seconds, it will automatically go into the
fast scroll mode. The reading will advance to a setting of
3.3 (the maximum voltage) after which it will automatically
wrap and start at “0.0” again. If a value of “0.0” is set,the
printer will automatically set the level each time the printer
is powered on with labels loaded or the head is closed.
5. Once the setting is correct, pressing the FEED key will
accept the setting and advance to the Online Feed
display.
SATO CL Series “e” Printers PN 9001074 Rev. B Page 3-19
Section 3. Configuration