Sharp AR-6020V Service Manual page 117

6. Paper feed tray section
A. 20/23/26/31 cpm
(1)Mechanism relation diagram
Signal name
MM Main motor
C1PUC Paper feed clutch (Paper feed tray 1)
C1PED Paper feed tray 1 paper empty detector
No.
1 Paper feed roller (Paper feed tray 1)
2 Paper separation roller (Paper feed tray 1)
(2)Paper lifting operation
This model feeds paper from the top of the paper stack in the feed
tray. The paper lift plate lifts the paper stack to the feed roller by
way of a spring under the plate. A constant pressure of the top
sheet of paper to the feed roller is maintained through use of this
mechanism. This model also incorporates a paper empty detection
sensor but does not have a paper remaining detection mechanism.
(3)Paper size detection operation
This model does not have a function to detect the paper size in the
cassette.
The paper size in the cassette is changed on operation panel.
(4)Paper pick up operation
The main motor (MM) is turned ON, and then the paper feed clutch
(C1PUC) is turned ON.
The power of the main motor (MM) is transmitted through the paper
feed clutch (CPUC1) to the paper feed roller.
The paper feed roller feeds paper to the paper transport section. At
that time, the separation roller rotates to prevent double-feed.
To prevent a double feeding, the separation roller apply counter
force to the paper from bottom side.
Name
Drives the most of the driving parts except the duplex section, the toner section and the
scanner sections.
ON / OFF control of the Paper feed roller in the paper cassette section are carried out.
Sensor to detect paper empty in Paper feed tray 1
Name
Paper feed roller feeds the top piece of paper in the cassette to the registration roller set in
the machine.
By applying a force in the direction opposite to the feed roller, to prevent double feeding of
paper in paper feeding.
AR-6020V OPERATIONAL DESCRIPTIONS 11 – 10
MM
C1PUC
C1PED
1
2
Function and operation
Function and operation