114 Intermec EasyCoder PF2i, PF4i, and PF4i Compact Industrial—Service Manual
Chapter 9—Label Taken Sensor
9.1 Description
The Label Taken Sensor (LTS) is a factory-installed or fi eld-installable
optional device, which enables the printer’s fi rmware to detect if the latest
printed label, ticket, tag, etc. has been removed before printing another
copy. It cannot be used in conjuction with a paper cutter, see Chapter 10.
The label taken sensor consists of a photoelectric sensor with a bracket and
a connection cable. The sensor and bracket are fi tted to a lug at the front
tip of the center section using a #T10 Torx screw.
A LED (light-emitting diode) in the LTS emits a narrow beam of light,
which will be refl ected back to a photoelectric sensor by any label, ticket,
tag, piece of strip, or liner, that has not been removed from the outfeed
area. A prerequisite is that the media is fed out along the center section of
the printer.
The LTS is connected to J53 on the CPU board. The sensitivity is adjusted
in the Setup Mode, see Chapter 9.3.
The theoretical point of detection of the LTS is situated 20.7 mm (0.81in.)
outside the inner edge of the media path and immediately in front of the
tear bar.
Cable to J53 on the CPU board
Sensor
Center section
#T10 Torx screw
Mounting lug
Bracket
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General
Weight and Dimensions
