Muratec MFX-1700 Specifications download pdf (Page 23)

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2.6 Document Scanning Sequence

2.6.1 Document Detection

When a document is placed into the document feeder, Document Sensor 1 (DS1) is activated and you will

hear the short beep.

2.6.2 Document Separation

Document separation is the process that allows a multi-page document to go through the scanner one

page at a time. Separation occurs through the action of the separator roller and retard roller.

As shows in the illustrations, documents in the feeder are pressed against the separator roller. The bottom

document is separated from the remaining documents by the friction of the retard roller.

2.6.3 Document Transport

Following document separation, the feed roller causes the document to advance. As it advances, the

leading edge of the document activates the Document Sensor 2 (DS2) sensor. Once DS2 is activated, the

feed roller continues to rotate until the document reaches the scan wait position. The machine uses the

distance from DS2 to the scan wait position and the diameter of the feed roller to determine the number of

rotations necessary to feed the document to the scan wait position.

2.6.4 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 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.

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 PCB 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.

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Muratec MFX-1700 Specifications Page 23