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Basic operation
All high-level digital sender processes are routed through the formatter, which processes images and
communicates with other devices.
The basic digital sender operation can be divided into three systems:
●
The engine control system, which includes the power supply and the scanner controller board
●
The pickup-and-feed system, which consists of various rollers and transports the media through
the ADF
●
The scanner system, which scans documents and sends them to the formatter in the form of data
Sequence of operation (scanner)
Period (sequence) Description
Power on The period of time from when the digital sender power is turned on until the main motor begins
to rotate.
Initialization The period of time after the initial power-on sequence and before the digital sender is ready
to scan. During this time, the scanner and ADF initialization is completed, scanner calibration
is performed, and the ADF checks for media in the input tray.
Standby The period of time from the end of the initialization sequence until a request for a scan. During
this time, the scan carriage is in the Home position and the digital sender might go into Sleep
mode.
Scan The period of time immediately following a request for a scan. The scanner fan turns on, the
scan start position is adjusted, the digital sender performs the scan, and data is sent to the
formatter.
26 Chapter 4 Theory of operation ENWW