Brady BBP81 User Manual page 99

Problem
Vertical drift in
top-of-form position
Vertical image or
label drift
The bar code printed
on a label does not
scan.
5/13/08
Table 16 • Print Quality Problems (Continued)
Possible Cause
The printer is out of calibration. Recalibrate the printer.
Vertical drift occurs during
normal printer operation.
Note • A vertical drift of
± 4 to 6 dot rows
(approximately 0.5 mm)
is within normal
tolerances.
The platen roller is dirty.
The printer is using
non-continuous labels but is
configured in continuous mode.
The media sensor is positioned
incorrectly.
The media sensor is calibrated
improperly.
The platen roller is dirty.
Improper printhead pressure
settings (toggles).
Improperly loaded ribbon or
media.
Incompatible media.
The bar code is not within
specifications because the print
is too light or too dark.
Not enough blank space around
the bar code.
BBP81 User Manual
Recommended Solution
Calibrate the printer.
Clean the platen roller. See
and Platen Roller on page
Configure the printer for non-continuous and run
calibration routine, if necessary.
Ensure that the media sensor is properly
positioned to read a single/consistent interlabel
gap.
See Calibrate Media and Ribbon Sensor
Sensitivity on page 55.
Clean the platen roller. See
and Platen Roller on page
Adjust the printhead pressure to ensure proper
functionality.
Verify that the printer is loaded properly.
Ensure that the interlabel gaps or notches are 2 to
4 mm and consistently placed. Media must not
exceed minimum specifications for mode of
operation.
Perform the FEED Self Test on page
the darkness or print speed settings as necessary.
Leave at least 1/8 in. (3.2 mm) between the bar
code and other printed areas on the label and
between the bar code and the edge of the label.
Troubleshooting
Print Quality Problems
Clean the Printhead
80.
Clean the Printhead
80.
102. Adjust
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