User Guide

Document feeder operation (M525c model)
The following sections describe the operation of the document feeder for the M525c model.
The M525c product supports single page pass electronic duplexing (e-duplex) copy jobs.
The product uses two separate scan modules to scan the frontside and backside of an e-duplex copy
job page in a single page pass thought the document feeder. See
Document feeder paper path
(M525c model) on page 55.
For specific e-duplex copy jobs, a background selector changes the reflective platen from a white strip
to a black strip for page edge-to edge recognition. See
Frontside and backside background selector
(M525c model) on page 57.
Sensors in the document feeder (M525c model)
The document feeder contains the following sensors:
●
ADF Y (length) sensor: Detects whether there is a legal-size original.
●
ADF paper present sensor: Detects whether a document is present in the document feeder. If
paper is present in the document feeder when copies are made, the product scans the document
using the document feeder. If no paper is present when copies are made, the product scans the
document using the scanner glass.
●
ADF multi pick (ultra sonic) sensor: Uses ultra sonic sound to detect a mutli page paper
feed.
NOTE: This sensor also functions as the pick success sensor.
●
ADF paper path deskew sensor: Detects the top of the page as it enters the deskew rollers.
●
Prescan frontside sensor: Detects the top of the page as it approaches the frontside scan
module (document feeder glass).
ENWW
Scanning/image capture system
53