Carriage CAM and Auto PPS adjustment
At the back of the Carriage there is a sliding cam that determines the PRS (Print to platen Rib Space) of
the Carriage. In manufacturing, the anti-rotation rail (area in which the PRS cam slides) is adjusted to
calibrate the nozzle plate position of the printhead, at around 1.6 mm all along the scan axis width.
This calibration is not service-adjustable and should remain constant throughout the printer's life.
As there are different paper thicknesses, the printer is able to rotate this sliding cam automatically to
three different positions, changing the PRS distance to accommodate it to the appropriate printing
distance.
This rotation is performed by taking the Carriage to a feature on the left-hand side of the scan axis,
different side movements of the Carriage at different speeds allow this feature to grab and rotate the
cam accordingly. The Cam has three different areas for three different PRS adjustments.
Auto-PRS feature located on the left-hand side of the scan axis.
Back part of the Carriage with auto-PPS cam, after being activated in position 1.
Carriage impelling system
ENWW
Subsystems
27
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