XPM 200HR™
Thermal Printer Family
HENGSTLER
®
Part No. D 690 074
Mod. No. 4 300113 LEV
page 10 of 32
Figure 3
Figure 4
3.3. Description of Components and Operation
The key components or modules to the XPM 200HR™ family of thermal printers are the print
mechanism, controller and optional presenter. Please refer to Figures 1, 2, 3 and 4.
The thermal printhead is positioned above the platen. With the print mechanism closed, the
platen acts as a roller to advance the paper at the same time as it acts as a surface against
which the spring-loaded printhead presses the paper to insure good thermal conductivity.
The interface, stepper motor used to turn the platen, sensors, printhead, optional presenter
motors and paper cutter are all connected to the controller, which sends commands and
causes these components to function at the proper time. The cutter separates the paper from
the paper supply when commanded to do so by the controller. The cutter is a “pizza cutter”
type which uses a disk-shaped blade that travels along the edge of a fixed cutter blade to
sever the paper. Sensors monitor progress as the printed document is created. All these
items are mounted to electrically-conductive mounts to discharge any static and to provide
electrical noise shielding.
