HP DesignJet T730

2. When the Multi-sheet Tray is installed and media is present, the light from the Optical sensor hits the
media. Only a portion of the light bounces back to the sensor, resulting in a small signal.
3. When the Multi-sheet Tray is not installed, the light from the Optical sensor does not shine on anything
nearby, so no light will reect back to the sensor, resulting in no signal.
The Multisheet Media Sensor has been designed to be tolerant of the following:
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Assembly variations that aect the position and alignment of the Optical sensor.
●
Assembly variations that aect the position and alignment of the mirror.
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Variations in the sensitivity of the Optical sensor.
34 Chapter 1 Printer fundamentals ENWW