106
x Pratemaking / Master Feed / Ejection Section
chap.2
Operation
1) In the platemaking process, when the drum stops
in the master winding position, the master feed-
ing clutch comes on, so that sponge roller 2 is
driven and feeds out the master by a fixed
amount.
2) The master clump opens and closes, to clump the
master.
3) When the master is wound onto the drum, the
master feed clutch turns off, leaving sponge
roller 2 free to be turned by the master as it is
wound off the drum.
(4)
Master Feeding Clutch(Electromagnetic clutch)
Description
Sponge roller 2 is attached to the bottom section of the master conveyance way of the master feeding unit, and
is driven via the master feeding clutch (CL1) by the platemaking motor. The rotation of sponge roller 2 is
controlled with the master feeding clutch ON / OFF.
B mode
C mode
B mode
Master feeding clutch
Sponge roller 2
Circuit
Master clump
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