November 29, 1999
PRINTER
2-21
Detailed
Descriptions
2.2.5 PAPER FEED
Overview
1. Cassette bottom plate lock and release
•
Bottom plate lock and release lever.
•
Pressure from a coil spring under the bottom plate
2. Paper
end
detection
•
By a photosensor
3. Paper size detection
•
Series of 4 push switches
4. Paper near-end detection
•
By a microswitch
5. Paper
feed:
•
Paper fed by pick-up roller and separated by corner pawls
•
Sub-scanning position adjustment performed by registration sensor.
•
Speed of paper feed (low/high) controlled by a stepper motor.
6. Bypass tray (Optional printer I/F unit required)
•
Pre-feed detection by registration sensor.
•
Automatic paper exit
H306D516.WMF