Ricoh K-C3.5L Service Training page 25

Original Size Detection – Platen Mode (1)
Reflective
photosensors
(APS sensors)
detect the paper
size.
Slide 25
More on Original Size Detection in Platen Mode
Overview
Study the APS sensors. There are two length sensors and two width sensors.
When the platen cover is being closed, the CPU checks the sensors when the
platen cover is about 15 cm above the exposure glass (detected by the platen
cover sensor).
If the platen cover stays open during copying, the CPU checks the sensors when
the Start key is pressed.
Multi-copy mode
Note that the machine scans each page once, and stores it to memory.
Platen cover sensor
Original width sensors
25
Model K-C3.5L
Original length sensors