Panasonic DP-CL18 Service Manual page 111

DP-CL18
7.3.5. Paper Pickup
The cam-shaped pickup rollers are driven by the BK (black print cartridge) drive motor and force a sheet between the paper feed
rollers. The pickup roller completes only one rotation to pick a sheet of media from the paper cassette. This will push the sheet of
paper to the paper feed rollers but does not pick a second sheet. Alternately, depending on the user's selection, media may be
picked from the multi-purpose tray. The MPT tray pickup roller is driven by the MPT paper pickup motor and feeds a sheet of media
or an envelope into the registration roller.
The paper feed rollers advance the sheet of paper to the registration roller. The paper is driven lightly against the stationary
registration rollers to create a slight buckle in the paper, aligning the sheet of paper. At this point, the paper remains stationary
(since the registration roller clutch in the paper feed unit is not yet energized) until the image is ready to be printed on the paper.
The registration sensor detects whether the sheet of paper arrived at the registration roller after being properly picked and traveling
through the paper feed rollers.
The paper feed unit has the standard paper cassette paper empty and registration sensors. The standard paper cassette has the
MPT paper empty sensor for multi-purpose tray and the paper size detection levers. The standard paper cassette paper empty
sensor detects whether the paper is set in the standard paper cassette. The paper size detection levers are used for detecting
paper size and whether the standard paper cassette is installed in the printer. The MPT paper empty sensor detects whether the
paper is set in the MPT tray.
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