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Media Feed Section (magicolor 5430 DL) Main Unit Theory of Operation
2-70
II Composition/Operation
12.3.3 Media feed control
• Drive from the Intermediate Transport Motor (M3) is transmitted through the Tray 1 Paper
Feed Clutch (CL1) to turn the Feed Roller, thereby taking up and feeding the media.
• The media taken up and fed in is conveyed onto the Synchronizing Roller.
• The media is pressed against the stationary Synchronizing Roller so that a loop is
formed in the media. The Feed Roller is then stopped. The loop thus formed in the media
corrects any mechanical skew in the media.
• The Synchronizing Roller is started [Synchronizing Roller Clutch (CL2)] in synchronism
with the Sub Scan Print Start signal (/TOD) of the controller to convey the media.
• At the same time that the Synchronizing Roller is started [Synchronizing Roller Clutch
(CL2)], the Feed Roller is started again so that the media is conveyed further (this is
done to reduce load otherwise placed on the media feed section when the media is con-
veyed).
• As the trailing edge of the media reaches a point immediately before the Feed Roller, the
Feed Roller is stopped.
12.3.4 Media supply level detection control
• There is a window in the front cover of the cassette for indicating the media supply level.
• When the Paper Lift Plate goes up, a red lever appears in the window. The lower the level
of the media stack, the more the red portion is visible.
Intermediate Transport Motor (M3)
Tray 1 Paper Feed Clutch (CL1)
Synchronizing Roller Sensor (PC4)
Synchronizing Roller Clutch (CL2)
Sub Scan Print Start signal (/TOD)
4138T2E006DA
4138to2090c0
4138to2091c0
Lever
A
media empty
condition
When media is
loaded
Lever Indica-
tor indicating
the media
supply level
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