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PAPER FEED UNIT
c. 2nd paper feed control
The paper conveyed to the 2nd paper feed section stops
after the specified period from when PS14 goes ON (loop
formation).
(1) MC3 ON timing
1) Direct exposure scan copying
(When very high mode is selected)
After the specified period from when PS4 (paper
feed restart) goes ON
2) Copying in the E-RDH mode
(Except very high mode)
After the specified period from when PS18 goes
ON, or after the specified period from when MC7
(by-pass paper feed) goes ON
2. Signals
a. Input signals
(1) PS11 (PS11 → CB)
Conveyance door open/close detection signal
[L]: Door is closed
[H]: Door is open
(2) PS18 (PS18 → CB)
When the tray, LCT or ADU is used, the image data
from the E-RDH determines the laser write timing.
Laser write starts after the specified period from when
PS18 goes ON.
Also, during LCT or ADU paper feed, when the paper
turns PS19 (optics sync) ON, the CB checks the ON or
OFF state of PS18, and if PS18 was turned ON by the
previous sheet of paper, the CB stops the paper
momentarily at the predetermined position after PS19
ON. After the paper has passed PS18, paper feed
restarts.
[L]: Paper is detected
[H]: Paper is not detected
(3) PS14 (PS14 → CB)
Paper detection signal used for detecting the paper
feed temporary stop position
PS14 goes ON and outputs [L] when paper is detected
at the paper feed temporary stop position.
(4) PS30 (PS30 → CB)
Jam detection sensor
[L]: Paper is detected
[H]: Paper is not detected
(5) PS20/21 (PS21/21 → CB)
Sensor which determines the operation timing of MC8
(conveyance CL) (paper is conveyed as far the 2nd
paper feed section)
MC8 goes ON when PS20 or PS21 is ON.
(6) PS19 (PS19 → CB)
During continuous paper feed from the LCT/ADU, the
CB checks the state of PS18 (no feed) when the paper
reaches the specified position past PS19, and if the
previous sheet of paper is still at PS18, the CB tempo-
rarily stops paper feed.
Paper feed restarts after the trailing edge of the previ-
ously fed paper has passed PS18 (no feed).
b. Output signals
(1) SD1 DRIVE (CB → SD1)
SD1 drive control signal
[L]: SD1 ON
[H]: SD1 OFF
(2) SD2 DRIVE (CB → SD2)
SD2 drive control signal
[L]: SD2 ON
[H]: SD2 OFF
(3) SD3 DRIVE (CB → SD3)
SD3 drive control signal
[L]: SD3 ON
[H]: SD3 OFF
(4) SD5 DRIVE (CB → SD5)
SD5 drive control signal
[L]: SD5 ON
[H]: SD5 OFF
(5) MC5 DRIVE (CB → MC5)
MC5 drive control signal
[L]: MC5 ON
[H]: MC5 OFF
(6) MC6 DRIVE (CB → MC6)
MC6 drive control signal
[L]: MC6 ON
[H]: MC6 OFF
(7) MC7 DRIVE (CB → MC7)
MC7 drive control signal
[L]: MC7 ON
[H]: MC7 OFF
(8) MC8 DRIVE (CB → MC8)
MC8 drive control signal
[L]: MC8 ON
[H]: MC8 OFF
(9) MC9 DRIVE (CB → MC9)
MC9 drive control signal
[L]: MC9 ON
[H]: MC9 OFF
PAPER FEED UNIT-1
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