Original Size Detecting Section - Minolta CF1501 Service Manual

11. ORIGINAL SIZE DETECTING SECTION

• Original Size Detecting Sensors are provided for detecting the size of the original.
7
6
Front
1. Original Cover Detecting Sensor (PC25)
2. Original Size Detecting Sensor FD1
(PC30)
3. Original Size Detecting Sensor FD2
(PC31)
4. Original Size Detecting Sensor FD3*
(PC33)
11-1. Original Size Detecting Method
• The Original Size Detecting Sensors work on a principle that the intensity of light
reflected off the original varies with different distances.
• Light emitted by the LED of each sensor is reflected off the surface of the original. When
the photoreceiver of the sensor receives light of a given intensity level or higher, the
copier then determines that there is an original on the Original Glass.
Original
Photoreceiver
Original Size
Detecting Sensor
1
5
5. Size Reset Switch (SW10)
6. Original Size Detecting Sensor CD2*
(PC34)
7. Original Size Detecting Sensor CD1
(PC32)
*: Optional
LED
M-32
2 3
4
Rear
4004M519AA
Original Glass
4002M522AA