Ricoh DD 5450, Руководство по обслуживанию на месте, Страница: 101 / 403

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Chapter 3 Scanner Section
1 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.
It is resolved into picture elements and converted photoelectrically.
Additionally the machine is equipped with 3 reflecting sensors that detect the size of documents
placed on the document glass.
The optical system goes forward (to the left) or backward with a stop position of slider limit sensor 1.
Slider limit sensor 2
(S3-ADF home position sensor)
Optical System Operation (with ADF attached)
When ADF is attached, set the slider limit sensor 2 as the optical system stop position, and then
read the document darkness.
Slider limit sensor 2
(ADF home position)
Document
Lamp
Mirror
Glass
Glass Document
Lamp
Document cover
open/close sensor
Slider limit sensor 1
(scanner home position)
CCD
Mirror
Mirror
Lens
Document size
sensor 1
Document size
sensor 2, 3, 4
Document cover
open/close sensor
Slider limit sensor 1
(scanner home position)
CCD
Lens
Mirror
Lamp
1
Optical System Operation