InoTec SCAMAX 2600 Service Manual page 13

The principal of operation is as follows:
A single sheet or a stack of documents is placed in the input hopper. A photocell detects the presence of
document/s.
When the scan PC issues a scan command the machine pulls in the single sheet or top sheet of the stack
via the feed roller. The sheet travels through two guide plates till a rubber roller pair grips it. The sheet
reaches the scan area and is then grabbed by a second pair of rubber rollers. Subsequently, the sheet is
transport around a guide plate by yellow transport belts upwards and forward till it is deposited into the
output hopper.
In the scan area the sheet is illuminated by one or two fluorescent lamps, simplex or duplex. The lamps
are offset to each other to minimise ‚print-through'. The light reflected from each side of the sheet
contains the image information for the front and back respectively. Since the sheet is in continuous
motion each line is scanned in succession.
The reflected light hits a mirror that projects the light to a second mirror. The second mirror projects the
light to the lens, which sits in front of the CCD array.
The CCD converts the light containing the image information into an analogue electrical signal, which is
digitised and possibly binarised in the next processing step before being transferred to the PC.
The following page shows an electrical block diagram:
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SCAMAX Tech. Manual 06/2002 T-13
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