Ricoh J001 Service Manual page 164

6.7.6 PAPER PATH
Here is a summary of the operation of the paper path through the printer:
1. The feed clutch energizes and engages the feed roller, and the rotation of the
vertical motor drives the feed roller.
2. Paper feed roller feeds one sheet from the top of the stack in the paper
cassette. The friction pad at the lip of the paper cassette prevents a double-fed
sheet of papers.
3. The charge roller charges the transport belt. The charge on the transport belt
ensures that the paper stays on the transport belt.
4. The sheet feeds onto the transport belt. Then the feeler of the trailing edge
sensor rises and switches the trailing edge sensor on.
5. At the same time the trailing edge sensor goes on, the carriage moves to the
right of center. This allows the leading edge sensor to detect the leading edge
of the paper.
6. The leading edge sensor detects the right edge of the sheet when the carriage
and leading edge sensor move toward the HP sensor on the right.
7. The detection of the right edge by the leading edge sensor is used to determine
the width of the paper in the paper path.
NOTE: The leading edge sensor reads the right edge of the sheet only once.
This occurs at the time the first page of the print job. The leading edge
sensor does not detect the right edge for any sheet after the first sheet.
8. An area equal to the width of each print head is printed when the carriage
travels across the sheet from right to left.
9. This occurs when the last line is printed. The transport roller rotates only long
enough to feed the length of paper that remains. Then the paper exits the
printer.
10. The print job count goes up by one after the paper exits.
J001/J003
CÓPIA NÃO CONTROLADA
PAPER FEED, TRANSPORT, OUTPUT
6-32
CÓPIA NÃO CONTROLADA
SM