Mechanism; Master Disposal Mechanism; Disposal Box Full Detection; Master On Drum (Before Master Removal) Check Mechanism - Riso V8000 Series Technical Manual

CHAPTER 11. MASTER DISPOSAL SECTION

Mechanism

1.

Master Disposal Mechanism

The master disposal unit consists of the master disposal vertical transport section, which passes the
master from the print drum to the master disposal unit, and the compression section, which compresses
the disposed master inside the master disposal box.
The 1st and 2nd master disposal units are used for the 1st and 2nd print drums and differ in the
construction of their vertical transport sections.
The 1st master disposal unit has four master tail clamp fans which operate to assist the master end
clamping action on the 1st print drum.
A master disposal fan is also situated inside the master making unit, and the master making unit moves
to each print drum during master disposal (master making) to assist in the master disposal operation.
2.

Disposal Box Full Detection

The number of disposed masters contained inside the master disposal box for each master disposal
unit is stored in memory. A disposal box full indication is given when the master disposal count reaches
50, or if an overcurrent is detected during compression plate compression operation.
The disposal box safety SW checks that the master disposal box is in position.
The disposal box empty detection sensor checks that any masters remain inside the master disposal box
after masters have been discarded.
To reset the 'disposal box full' indication, detach the master disposal box from the main unit, then reattach
(The disposal box safety SW goes ON → OFF → ON again after at least 5 seconds). The disposal box
empty detection sensor checks for any masters remaining within the master disposal box.
The master disposal counters and displays for the disposal box full detection operate separately for the
1st and 2nd units.
3.

Master on Drum (Before Master Removal) Check Mechanism

The master loading sensor checks the master with the print drums at an angular position of 328° (1st
print drum) and 298° (2nd print drum) from the position the tailing edge of the position A detecting plate
escapes from position A sensor.
If no master is present, the master disposal operation is performed, but jam detection is not performed.
The master disposal jam sensor checks that master disposal is performed correctly.
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