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SECTION 4.
CLEANING AND MAINTENANCE
INTRODUCTION
This section provides information on user maintenance for the PTR3E. This
section contains the following information.
•
Adjusting the Print Quality
•
Cleaning the Print Head, Platen and Rollers
•
Cleaning the Sensors
•
Replacing the Print Head
•
Replacing the Fuse
PROCEDURES
ADJUSTING THE PRINT QUALITY
The PTR3E printer has two different means of adjusting the quality of the print:
print darkness and speed. When adjusting the printer for optimum print quality, a
bar code verifier system should be used. The human eye is a poor judge of the
relative widths of the bars in a symbol, a characteristic that is extremely important
for good bar code quality.
Darkness (Print)
This adjustment allows the user to control (within a specified range) the amount of
power that is used to activate the individual print head heat elements. It is
important to find a proper print darkness level based on your particular label and
ribbon combination. The printed images should not be too light nor should the ink
from the ribbon “bleed.” The edges of each image should be crisp and well defined.
The Print Darkness range can be set using the front panel LCD panel (see page 26)
or by downloading the setting using the Print Darkness software command. There
are five ranges, with 1 being the lowest and 5 being the highest. Once the range has
been selected, the PRINT Potentiometer on the front panel can be used to make
finer adjustments.
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