Theory of Operation Ver. 1.0 Jul. 2009
8.3.4
Original size detection control
A. Detection method
• For detection of the original size, the reflective size sensors detect the length of the orig-
inal while the CCD detects the width of the original.
Exposure unit
Original size detection sensor 1
(PS204)
Original size detection sensor 2 (PS205) *
• For the original of an irregular size, the nearest standard size on the large side is applied
to it.
A0EDT2C141DA
CCD unit
Original standard
position
8. SCANNER SECTION
Automatic document feeder or Original cover
Angle sensor (PS202)
346.1 mm
313.5 mm
Original read
position
Original size
detection
sensor 1 (PS204)
Original size
detection
sensor 2 (PS205) *
Exposure unit
A0EDT2E153DA
4037T2E597AA
*: Option
31