Description - Intermec EasyCoder 501 XP Service Manual

8. Print Unit

8.1 Description

Ribbon Rewind Unit
Print Unit
Liner/Batch Takeup Unit
Intermec EasyCoder 501 XP – Service Manual Ed. 4
The print unit is partly integrated with the ribbon rewind unit (see
Chapter 7.3) and optional liner/batch takeup unit (see Chapter 9.)
(option)
The main parts of the print unit are:
• The rubber-coated platen roller drives the media forward under
the printhead and provides the necessary counter-pressure.
• The stepper motor drives the platen roller via one belt and the
ribbon assist roller and the ribbon rewind unit via another. The
liner drive roller is idle, unless a liner/batch takeup kit is fi tted,
see Chapter 9.
• The tear bar makes it easier to tear off continuous and pre-
perforated media stock. It is also used for peel-off (self-strip)
operation.
• The label stop sensor (LSS) controls the media feed and checks
for out-of-paper conditions.
• The printhead produces the heat that melts the "ink" on the
transfer ribbon or blackens the direct thermal paper in patterns
that make up the letters, graphics, or bar codes.
• The headlift mechanism presses the printhead against the media
or transfer ribbon, or raises the printhead to allow media and
ribbon load.
Chapter 8
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