AL-1551 OPERATIONAL DESCRIPTIONS 7-5
5. Paper feed section and paper transport
section
A. Paper transport path and general operations
Paper feed is made in two ways; the tray paper feed and the manual
paper feed. The tray is of universal-type, and has the capacity of 250
sheets.
The front loading system allows you to install or remove the tray from the
front cabinet.
The general descriptions on the tray paper feed and the manual paper
feed operation are given below.
(1) Cassette paper feed operation
1) The figure below shows the positions of the pick-up roller, the paper
feed clutch sleeve, and the paper feed latch in the initial state without
pressing the COPY button after lighting the ready lamp.
The paper feed latch is in contact with the projection of the clutch
sleeve.
2) When the COPY button is pressed, the main drive motor starts
rotating to drive each drive gear.
The pick-up drive gear also is driven at that time. Since, however, the
paper feed latch is in contact with the projection of the clutch sleeve,
rotation of the drive gear is not transmitted to the pick-up roller, which
does not rotate therefore.
3) After about 0.1 sec from when the main motor start rotating, the tray
paper feed solenoid (PFS) turns on for a moment.
This disengages the paper feed latch from the projection of the
clutch sleeve, transmitting rotation of the pick-up drive gear to the
paper feed roller shaft, rotating the pick-up roller to feed the paper.
4) After more than half rotation of the pick-up roller, the paper feed latch
is brought in contact with a notch on the clutch sleeve, stopping
rotation of the pick-up roller.
(1)
Scanner unit
(9)
Drum
(2)
Copy lamp
(10)
Transfer unit
(3)
Lens unit
(11)
Pickup roller
(4)
LSU (Laser unit)
(12)
Manual paper feed tray
(5)
Paper exit roller
(13)
Manual paper feed roller
(6)
Main charger
(14)
PS roller unit
(7)
Heat roller
(15)
Paper feed roller
(8)
Pressure roller
(2)
(4)
(1)
(3)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(13)
(12)
(14)
(15)
OFF
PFS
OFF
RRS
OFF
PFS
OFF
RRS
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Summary of Contents for AL-1043
Page 115: ...AL 1551 CIRCUIT DIAGRAM 13 8 OPU ...
Page 116: ...AL 1551 CIRCUIT DIAGRAM 13 9 GDI PWB ...
Page 117: ...AL 1551 CIRCUIT DIAGRAM 13 10 GDI MEMORY PWB 6MB ...
Page 118: ...AL 1551 CIRCUIT DIAGRAM 13 11 POWER SUPPLY 120V 127V ...
Page 119: ...AL 1551 CIRCUIT DIAGRAM 13 12 POWER SUPPLY 200V Series ...