Oce 3121 Technical & Service Manual page 532

B) Re-pick up: for copying on the 2nd side
The copies, in the refeed unit, are transported by the re-pick roller. The copying
of the second side commences.
When the stacking is completed, the set-back roller is moved clockwise. The
1
copy paper is moved until the re-pick up sensor PS11 detects the leading edge.
The copy paper is moved continuously. The solenoid SL4 is energised for an
2
instant after the sensor PS11 is activated. Only the first sheet moves through
the re-pick-up roller: the second and subsequent sheets will be guided over the
deflector.
PS 12
When the trailing edge of the first copy passes the retarding rollers, the retard-
ing rollers will reverse. The rollers carry the copy paper back to a position
when the leading edge of the next sheet will not reach the sensor PS11.
508 TSM Océ 3121
PS 12
PS12
2nd copy
2nd copy paper
Retarding roller
Set-back roller
PS12
2nd copy
2nd copy paper
PS 11
Retarding roller
Set-back roller
PS 12
PS12 2nd copy
2nd copy paper
Retarding roller
Set-back roller
PS 11 PS11
Re-pick up roller
Re-pick up roller
1st copy
1st copy paper
Deflector
Flapper
SL4
Re-pick up roller
Re-pick up roller
PS11
1st copy
1st copy paper
SL4
Re-pick up roller
PS 11
PS11
Re-pick up roller
1st copy
1st copy paper
Functional description