e-STUDIO202S OPERATIONAL DESCRIPTIONS 7 - 5
(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, how-
ever, 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.
5) At this time, the paper is fed passed the paper entry detection
switch (PPD1), and detected by it. After about 0.15 sec from
detection of paper by PPD1, the tray paper feed solenoid
(PFS) turns on so that the clutch sleeve projection comes into
contact with the paper feed latch to stop the pick-up roller.
Then the pick-up roller rotates for about 0.15 sec so that the
lead edge of the paper is evenly pressed on the resist roller,
preventing against skew feeding.
6) To release the resist roller, the tray paper feed solenoid and
the resist solenoid are turned on by the paper start signal to
disengage the resist start latch from the clutch sleeve, trans-
mitting rotation of the resist drive gear to the resist roller shaft.
Thus the paper is transported by the resist roller.
7) After the resist roller starts rotating, the paper is passed
through the pre-transfer guide to the transfer section. Images
are transferred on the paper, which is separated from the OPC
drum by the drum curve and the separation section.
8) The paper separated from the drum is passed through the fus-
ing paper guide, the heat roller (fusing section), POD (paper
out detector) to the copy tray.
OFF
PFS
OFF
RRS
OFF
PFS
OFF
RRS
ON
PFS
OFF
RRS
OFF
PFS
ON
RRS
