User Guide

Document feeder e-duplex operation (M525c model)
Following is the basic sequence of operation for an e-duplex job.
NOTE: For an e-duplex copy job, the background scan operation begins immediately after the
simplex sequence of operation ends.
Document feeder backside scan operation (M525c model)
1. The feed motor continues to drive the paper until the leading edge activates the prescan backside
sensor. The product firmware registers the position of the leading edge of the paper.
NOTE: If the copy job requires a reflective platen change, the backside background selector is
activated.
2. The feed motor continues to rotate to drive the leading edge of the paper through the preset
distance from prescan backside sensor to the backside background selector scan zone. The
backside background scan module begins scanning and retrieval of the data.
3. The prescan backside sensor is deactivated when the trailing edge of the paper passes it. The
product firmware registers the trailing edge of the paper position.
4. The feed motor continues to rotate to drive the trailing edge of the paper edge pass the backside
background selector scan zone.
5. The feed motor continues to rotate and ejects the trailing edge of the paper into the output bin.
6. One of the following occurs:
◦
If the copy job is complete, the ADF paper present sensor is deactivated. The feed motor
reverses rotation to raise the pick roller.
◦
If the copy job is not complete, the ADF paper present sensor is active. The product firmware
detects additional pages in the input tray and the process repeats.
Frontside and backside background selector (M525c model)
NOTE: The product automatically controls the operation of the frontside and backside background
selectors.
The background selectors change the reflective surface behind a duplex or simplex scanned page from
white to black. Doing so allows the firmware to recognize the edges of a scanned page by passing it
over a black background.
The M525c product uses the background selectors for specific scan jobs. Scan jobs like optical
character recognition (OCR) and scan to folder require a black reflective background so that the
firmware can correctly scan the page from edge-to-edge.
The frontside background selector is a non removable component of the document feeder. The backside
background selector assembly is located under the document feeder input tray and is removable to
allow access for cleaning the backside scan module glass.
ENWW
Scanning/image capture system
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