MX-M700N SCANNER SECTION D – 2
2. Operational descriptions
A. Outline
There are following three methods of scanning documents in this machine.
• Place a document on the table glass. The copy lamp unit is operated to radiate copy lamp light onto the document, scanning the document
with the CCD.
• The DSPF feeds a document. The copy lamp light is radiated onto the document which is stopped at the specified position and the document
is scanned by the CCD.
• The DSPF feed a document. The LED light of the CIS unit which is attached to the DSPF is radiated to the back of the document, and the
document is scanned by the CIS.
B. Description
(1) CCD/Lens unit
This machine employs the reduction optical-type line CCD (Charge Coupled Device) of scan resolution of 600dpi and 7400 pixels.
CCD scan is performed by shifting the scan positions sequentially by the carriage unit (lamp and mirror) scan or moving the document with the
DSPF.
Lights reflected by the document are reflected by each mirror to form images on CCD elements through the reduction-type lens. The CCD con-
verts the optical energy into electrical energy (analog). (Photoelectric conversion)
(2) CIS unit
The image sensor which scans back document images is attached to the DSPF. The close-contact type image sensor (Contact Image Sensor)
with scan resolution of 600dpi and 7196 pixels is employed.
For the CIS to scan documents, the scan position is sequentially shifted by shifting the document by the DSPF, and the LED light in the unit is
radiated to the back of the document, and photo energy is converted into electric energy (analog signal).
Code
Signal
name
Name Function/Operation Type NOTE
MIM MIM Scanner (reading) motor Drives the scanner (reading) section. Stepping motor
MHPS MHPS Scanner home position sensor
detector
Scanner home position detection. Transmission
type
Sensor
CIS unit CIS unit Contact-type image scan sensor unit.
Back document image scan.
CCD PWB CCD PWB Front document image scan.
(Document table/DSPF mode)
Converts the document images (optical signals) into
electrical signals.
CL1 CL1 Scanner lamp Illuminates the document. (Xenon lamp)
No. Name Function/Operation
1 Scanner drive belt Transmits the scanner motor power to the scanner unit.
2 Pulley Drives the scanner drive wire.
3 Lens Reduces the document images (optical) and radiates them onto the CCD.
4 Scanner drive wire Transmits the scanner motor power to the copy lamp unit and the mirror base unit.
5 Reflector Condenses the copy lamp lights.
6 No. 3 mirror Assures the optical path from No. 2 mirror to the CCD.
7 No. 2 mirror Assures the optical path from No. 1 mirror to No. 3 mirror.
8 White balance sheet for DSPF (CIS)/
DSPF scanning glass
The white reference sheet for scanning with the CIS unit.
9 CIS unit Contact-type image scan sensor unit.
Back document image scan.
10 CCD PWB Front document image scan. (Document table/DSPF mode)
Converts the document images (optical signals) into electrical signals.
Lens center line
Focus point
LED PWB
CIS
CIS UNI
Selfoc lens
Glass
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