Original Feed Timing - Kyocera Mita DP-100 Service Manual

(2) Original feed timing

DPODSW YC2-8
DPTSW YC2-5
OFM YC3-1, 2, 3, 4
OFM drive pulse count
OVSYNC (Copier)
A: When a primary feed starts, the original feed motor (OFM) continues forward rotation (slowup) for the period of the
specified number of pulses (PC1) to rotate the DP forwarding pulley and the DP feed pulley. The original is fed into
the DP through the original table.
B: The primary feed advances and then the leading edge of the original turns on the DP timing switch (DPTSW). After
the original feed motor (OFM) continues forward rotation for the period of the specified number of pulses (PC2) since
the DP timing switch (DPTSW) is turned on, the motor stops (slowdown). The original stops just before the scanning
position on the contact glass.
C: The original feed motor (OFM) is suspended for the period of scanning processing timing matching (SP2) in the
copier.
D: When the secondary feed starts, the original feed motor (OFM) continues reverse rotation (slowup) for the period of
the specified number of pulses (PC_ORGF) to rotate the conveying roller. Since the original advances a little before
scanning operation on the copier starts, the scanning margin at the leading edge of the original is secured.
E: Scanning operation (OVSYNC) on the copier starts.
F: The secondary feed advances and then the trailing edge of the original turns off the DP timing switch (DPTSW). The
original feed motor (OFM) continues reverse rotation for the period of the specified number of pulses (PC_ORGR)
since the DP timing switch (DPTSW) is turned off. At the end of the specified number of pulses (PC_ORGR),
scanning operation (OVSYNC) on the copier also finishes. Thus, the specified scanning margin at the trailing edge of
the original is secured.
H: At that time, the original feed motor (OFM) continues reverse rotation for the period of the specified number of pulses
(PC4-PC_ORGR) to eject the original and then stops (slowdown).
Primary original Secondary original
feed start feed start
DPTSW: On
Fwd.
Stop
PC1 PC2
A B C D
Timing chart 2-1-1
Stop
SP2
PC_ORGF
E
DPTSW: Off
Rev.
PC_ORGR PC4-
PC_ORGR
F G H
3HK
Stop
2-1-3