DUPLO SEIKO CORPORATION Duprinter DP-330, Service Manual

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30
z
Scanner Section
chap.2
z
Scanner Section
1. Description
The document is illuminated with the lamps, and the document reflection in proportion to the document
image darkness is imaged on the CCDs through the mirror and lens. Then it is resoluted into picture elements
and converted photoelectrically.Additionally the machine is equipped with 3 reflecting sensors that sense the
size of documents placed on the document glass.
•
The optical system gose forward (to the left) or back ward with a stop position of scanner home
position sensor(PS1).
Optical System Operation
440340
• When ADF is attached, set the ADF Home Position Sensor (PS2) as the optical system stop position, and
then read the document darkness.
Optical System Operation (with ADF attached)
440341
Glass
Mirror
Mirror
Lens
Scanner
home position sensor(PS1)
CCD
Lamp
ADF
home position sensor(PS2)
ADF home position
sensor(PS2)
Glass
Scanner
home position sensor(PS1)
Mirror
Mirror
CCD Lens
Lamp
Document
Document
cover sensor
Document
sensor 1,2,3
Document
sensor 4
Document
sensor 5
Document
Document
cover sensor
Document
sensor 1,2,3
Document
sensor 4
Document
sensor 5