Upper and lower cassette pickup mechanism
The device detects the presence of the upper and lower cassettes when they are installed correctly.
Cassette presence is detected by one or both of the middle (Tray 2; SW6) or lower (Tray 3; SW7)
switches being active. The cassette media sensor detects the type of media. When the upper and lower
cassettes are correctly installed and contain the correct media type, the pickup operation begins.
The paper is at the pickup height position by the spring force and the lifting plate, which is pushed up
by the lift-up motor operation.
The cassette pickup roller rotation picks up one sheet of media at a time and feeds it to the device. A
multiple-feed prevention mechanism removes multiple-fed media.
Cassette switches Paper length detection switch (upper SW6. lower SW7)
SW (1, 0, 0)
12
SW (1, 0, 1)
12
SW (1, 1, 0)
12
SW (1, 1, 1)
12
Paper width detection
switch (upper SW4,
lower SW5)
A5 (long edge lead) 8.5 x 13 LGL Cassette absent
SW (1, 1, 1)
12
B5 (long edge lead) Custom B4 N/A
SW (0, 0, 1)
12
EXE (long edge lead) Custom Custom N/A
SW (1, 0, 0)
12
LTR (long edge lead) Custom LDR N/A
SW (0, 0, 0)
12
A4 (long edge lead) Custom A3 N/A
1
Switch status 1 = active. 0 = inactive
2
(#, #, #) represents the top switch, middle switch, and bottom switch respectively.
Figure 4-22 Upper and lower cassette pickup mechanism
1. The DC controller receives a print command from the formatter, and then begins rotating the pickup-
and-feed motor to bring the lifting plate to the pickup position.
2. The device performs the lift-up operation by monitoring the upper lifter position sensor (SR10) and
the lower lifter position sensor (SR11) when the device is turned on, when the cassette is installed,
or for each job.
3. The DC controller lifts down the lifting plate to the original position to prevent the leading edge of
media from being folded. The device performs the lift-down operation by monitoring SR10 and
SR11 when no job is requested for a specified time after the lift-up operation.
ENWW Print engine 125
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