Loading The Media; Entry Platen; Sensing Media Presence; Media Sensor - HP DesignJet 200 Service Manual

Loading the Media

Entry Platen

The media load path begins with the entry platen, which provides a loading surface.
(Illustration ' page 10 23.)
When you assemble the plotter, it is important to correctly position the entry platen to ensure
that the dashed lines exactly indicate the permitted right edge loading area. The left side of
the entry platen should be pressed up against the left side plate. (Details ' chapter 6.)
(Loading Instructions ' User's Guide, chapter 2, w Loading media.)

Sensing Media Presence

Media Sensor

The media sensor is an optosensor and is mounted towards the right end of the entry platen.
(Illustration ' page 10 23). Two articulated levers block the optical path between emitter
and receiver when media is not loaded. When media is loaded, both levers are rotated, thus
clearing the optical path and changing the sensor state from open to closed. This
double lever system provides a leading and trailing edge sensing capability (for media length
measurement) to the plotter. The media sensor is electrically connected to the main PCA.
1. Media Not Loaded
Drive roller
stopped
Secondary flag
Primary flag
Photo sensor area
Sensor housing
(cross-section)
5 2 Functional Overview
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