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Intermec EasyCoder PF4i Compact Industrial—User’s Guide (Fingerprint) 109
Chapter 12—Adjustments
Label Stop Sensor
The label stop/black mark sensor (LSS) is a photoelectric sensor that
controls the printer’s media feed by detecting gaps between labels, or slots
or black marks in continuous stock, depending on the printer’s setup
in regard of media type (see Chapter 6, “Setting Up the Printer”). An
obvious prerequisite is that the LSS must be aligned with the gaps, slots,
or black marks. If using-irregularly shaped labels, align the LSS with the
front tips of the labels.
The LSS can be moved laterally between 5 fi xed positions. There is one
part of the sensor on top of the upper media guide and another part
underneath the lower guide. These must be adjusted individually to the
same position. Using a small screwdriver, push them inwards as far as
they go and then pull them out—one at the time—while counting the
clicks from the snap-locks. A hole in the bottom plate facilitates adjust-
ment of the lower sensor package.
The various detection points of the sensor in relation to the inner edge of
the media are as follows:
One click out 3 mm .118 inches
Two clicks out 8 mm .315 inches
Three clicks out 12 mm .472 inches
Four clicks out 16 mm .639 inches
Five clicks out 20 mm .787 inches
Upper part of LSS
Print mechanism
One diode +
One sensor
Lower part of LSS
One diode +
One sensor