By-Pass Tray; Composition; Mechanisms - Minolta Di551 Service Manual

BY-PASS TRAY

[1] Composition

1. By-pass paper feed roller
2. Up/down motor/BP (M20)
3. By-pass feed roller

[2] Mechanisms

Mechanism
First paper feed
Paper lift-up *1
Double feed preven-
tion
No paper detection
Paper size detection
*2
1
6
5
Method
By-pass feed roller
Paper up/down plate
Up/down motor/BP
(M20) + Upper/lower limit
detection sensor
Torque limiter
Photo sensor + Actuator
Width: VR
Length: Photo sensor +
Actuators (two)
2
3
4
4. By-pass tray
5. Loop roller
6. By-pass double feed prevention roller
*1 Paper lift-up
The up/down motor/BP (M20) drives the paper
up/down plate via gears. Paper is automatically
pushed up to the paper feed position, when the
print start button is pressed. When paper is
removed or exhausted M20 will drive down the
up/down plate.
Paper up/down plate
2-L-1
BY-PASS TRAY
Up/down motor/BP (M20)