Paper Separation - Toshiba DP1600 Service Manual

9.4.3 Paper separation

Paper separation is performed by the pickup feed
roller and separate roller in this machine. The sepa-
rate roller is connected to its shaft through the ar-
bor R (torque limiter). The pickup feed roller is ro-
tated in the direction of the arrow (
timing as the pickup roller by the main motor. The
separate roller is driven in the direction of the arrow
( ) through the arbor R (torque limiter). But
when there is no paper or only one sheet between
the rollers, the friction between the rollers or that
between the sheet and the separate roller is large
enough to force the separate roller in the direction
of the arrow ( ), cause a slip in the arbor R (torque
limiter).
However, if multiple-sheet feeding occurs, since the
friction between the sheets is small, the lower sheet
is forcibly separated from the upper sheet and is
sent back in the direction of the (
separate roller. The upper sheet is fed in the direc-
tion of the arrow (
Examples:
If only sheet of paper
the force of pickup feed roller, which is greater than
that of the separate roller, causes the separate roller
to rotate in the ( ) direction, sending the paper.
If two sheets of the paper (
separate roller, the force of the respective rollers is
greater than the friction between sheets of paper,
and the top sheet is sent in the (
by the feed roller while the bottom sheet
in the ( ) direction by the separate roller.
December 2000 © TOSHIBA TEC
) at the same
) by the
) by the feed roller.
arrive at the separate roller,
and ) arrive at the
) direction
is sent
Pickup feed roller
Separate roller
9 - 5 1600/2000/2500 PAPER FEEDING SYSTEM
Arbor R
09-04-03
Pickup feed roller
Separate roller
09-04-04