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Main Unit Theory of Operation Conveyance Section
2-91
II Composition/Operation
15.3.6 Media neutralization
• The Charge Neutralizing Cloth neutralizes any charge left in the media after the 2nd
transfer process.
• The charge residue is grounded through the Charge Neutralizing Cloth to the machine
frame.
15.3.7 OHP film detection control
• To prevent incorrect prints on OHP film, the type of the media being conveyed is detected
by the OHP Sensor (PC7).
• The OHP detection is made after the loop has been formed in the media before the Syn-
chronizing Roller.
• If the output voltage of the OHP Sensor (PC7) is less than a predetermined value, the
machine considers that the media is a type other than OHP film. If the output voltage is
the predetermined value or more, the machine determines that the media is OHP film.
• If the media type setting does not match the results of OHP detection, the machine sus-
pends the print cycle and displays the message “SIZE/TYPE ERROR (magicolor 5430
DL/5440 DL)” or “PAPER ERROR (magicolor 5450)” on the panel.
• The media that has caused type error is fed out of the machine after going through the
2nd transfer and fusing processes. The subsequent sheets of media are subjected to the
following operation.
4138to2102c0
Charge Neutralizing
Cloth
Media
2nd Transfer Roller
4138to2103c1
OHP Sensor (PC7)
Synchronizing Roller
Prism
4138to2583e0
Sensor
Sensor output
LED Remote
Prism
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