Specifications

<Paper Take-Up Retry Control>
•
To minimize the occurrence of paper misfeed due to a slippery Paper
Take-Up Roll, the Paper Take-Up Clutch (CL1/2/3) is kept deenergized for
500 msec. before it is energized again, if a sheet of paper fails to reach the
Paper Take-Up Sensor (PC6/7/8) even after the lapse of 925 msec. after
the clutch has first been energized. (This is called the paper take-up retry
function.)
•
A paper misfeed results if the sheet of paper does not reach the Paper
Take-Up Sensor even after two paper take-up sequences.
•
Here is the control timing chart.
ON
L
1075T186CA
Paper Take-Up
Motor (M1)
2038 msec.
925 msec.
500 msec.
OFF
ON
OFF
H
1st/2nd/3rd Drawer Paper
Take-Up Clutch (CL1/2/3)
1st/2nd/3rd Drawer Paper
Take-Up Sensor (PC6/7/8)
*1: The copier determines that there is a paper misfeed if the output
from the Paper Take-Up Sensor does not go LOW even after the
lapse of approx. 2,038 msec. after the paper take-up sequence,
including the retry.
<Paper Take-Up Interval Control>
•
The Paper Feed Roll and Separator Roll may sometimes fail to separate
the subsequent sheet of paper properly and the leading edge of that paper
may be ahead of the Feed and Separator Rolls inside the copier. If the
Paper Take-Up Roll is started for the new paper take-up sequence in this
condition, the distance between the preceding and the current sheet of
paper will become shorter than normal, resulting in a misfeed.
•
To maintain a given paper take-up interval, therefore, this copier provides
the following control, thereby preventing a paper misfeed.
•
It normally takes approx. 160 msec. or more for the paper to block the
Paper Take-Up Sensor (PC6/7/8) (
L
) after the Paper Take-Up Clutch
(CL1/2/3) has been energized. If this timing is less than 160 msec., the
clutch is deenergized temporarily and, after a given period of time, it is
energized again to provide a good interval between two paper take-ups.
(This is called the paper take-up interval control.)
L
1075T187CA
160 msec.
ON
OFF
H
1st/2nd/3rd Drawer Paper
Take-Up Clutch (CL1/2/3)
1st/2nd/3rd Drawer Paper
Take-Up Sensor (PC6/7/8)
Paper Take-Up Start
A Given Period of Time
Restart
M-124