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Machine Composition MINOLTAFAX 5600
2-10
2.8.4 Document Scanning
When the document reaches the scan wait position, the machine waits for the next command. It will start
scanning the document when either the start or copy key is pressed. The light from the scanner lamp
strikes the face of the document and is reflected into the lens through mirrors A, B, and C. In case the
light intensity along the length of the scanner lamp is not uniform, shading compensation is provided to
ensure even illumination.
Reflected ray Lens Configuration of CCD
Charge transfer register
Photo-sensitive section
Charge transfer register
Output
Section
To Main Control
As the reflected image passes through the lens, it is focused onto the charged coupled device (CCD).
The CCD then converts the dark and light areas of the image into electrical impulses, or image data.
Circuits on the main control PWB encode the image data and send it to the modem where it is modulated.
The modulated signal is then placed onto the telephone line by the NCU.
When DS2 detects the trailing edge of the document, the image signal output is turned off. The scanner
continues to remain active for a few more seconds in case there is another document to follow.
Feed Roller
Press Roller
Retard Roller
Separate Roller
Document Sensor 1 (DS1)
Pickup Roller
Exit Roller
Document Discharge
Document Sensor 2
(DS2)
Press Roller
Mirror (C)
Corer Glass
Lamp
Mirror (A)
Mirror (B)
CCD
Lens
Exit Press Roller
2.8.5 Document Discharge
The scanned document is discharged through the document exit by the exit press roller.
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