12 - 4
CZ180 / CV1860 Rev. 1.0
CHAPTER 12: MASTER MAKING SECTION
4. Master Set Mechanism
1) When the Master-making upper unit is closed, the Master-making unit safety switch becomes ON,
and following movements are made.
2) The Write pulse motor rotates in the forward direction and sends the master forward. (The Write
pulse motor rotates the Write roller and Master stocker roller.)
The Write pulse motor stops when the leading edge of the master material is detected by the
Master positioning sensor.
3) The Write pulse motor then rotates in the opposite direction to bring back the leading edge of the
master material 5mm away form the Master positioning sensor.
4) This 5mm distance can be adjusted or changing by using Test Mode No.540
5) The master set movement after master cutting is made in the following steps.
6) After cutting the master material and when the Cutter blade disc activates the Cutter stop position
switch, the Write pulse motor rotates in the reverse direction to bring the master material back
3.6mm away from the Cutter unit.
7) The Cutter motor activates in the reverse direction to bring the Cutter blade disc back to the HP
position.
8) The Write pulse motor then rotates in the forward direction to send the master material forward
until the Master positioning sensor detects the leading edge of the master material. The Write
pulse motor rotates in the reverse direction to bring the leading edge of the master material back
5mm away from the Master positioning sensor.
5. Master-making Mechanism
The movements from the master-making to master-loading on the drum is made in the following
sequence.
1) With the start of the master-making, the Write pulse motor sends the master material forward.
The leading edge of the master material is detected by the Master positioning sensor. The
master continues to feed forward for a set length after the detection by the Master positioning
sensor. The Write pulse motor stops and waits.
2) When ready to make the master, both the Write pulse motor and Load pulse motor activates to
send the master material further forward while the master is being made until the leading edge of
the master material arrives at the master-making position.
3) When the leading edge of the master arrives at the master loading position, the Load pulse motor
stops while the Write pulse motor keeps on sending the master material forward. The master
making continues and oncoming master goes into stocker room.
4) When the Drum arrives to Position-A and Clamp plate opened, ready to clamp the master, the
Load pulse motor active to send the leading edge of the master forward, under the clamp plate.
The Clamp plate is then closed to clamp the leading edge of the master.
5) As the Clamp HP sensor goes ON, the Separation fan activates.
6) After the master making is completed, the master material is sent further forward until the cutting
position of the master material arrives to the Cutter unit.
7) The Main motor rotates the Drum, with the newly wrapped master on the surface, to a position
74.6 degrees from Position-A and stops for the Master loading sensor to check the presence of
master on the Drum.
8) If the Master loading sensor detects master on the Drum, the Cutter unit cuts the master, and
then the Main motor activates again to rotate the Drum to wrap rest of the master on the Drum.
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