Xerox DocuColor 12/DCCS50, Service Manual

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10-160 DocuColor 12/DCCS50
The Decurler, The Finisher Gate
Reissue
Principles of Operation
The Decurler
Paper exiting the fuser is fed first through the Decurler. The Decurler is capable of correcting
curl up, or curl down. This is achieved through the use of two sets of rollers (
Figure 1 ).
The first set of rollers in the Decurler Assembly will correct for curl up. This is accomplished
through the use of two rollers, one larger and made of a soft, foam material, and the other is a
metal rod. The foam roll is positioned over the top of the paper path. The metal rod is located
below the path. When the paper enters the decurler, and if it is to be processed for curl up, the
two rolls will come together with the paper between them. Because the top roll is soft, the lower
rod will slightly deform it, and the paper will pass through the nip created at this point. The
shape of the nip will remove the curl from the paper as it passes through.
To reduce curl down, the second set of rolls in the Decurler are used. In this set of rolls, the
foam roll is on the bottom of the path and the metal rod is on the top. The rolls come in contact
with each other and the paper is passed through the resulting nip.
The decurled media is then passed into the Finisher.
Figure 1 Decurler Assembly and Paper Path
The Finisher Gate
The Finisher Gate is the first point at which the paper in the path can be diverted to either the
Finisher or the Sorter/Mailbox (
Figure 1 ).
The gate consists of a rod with fingers that is controlled by the Finisher Gate Solenoid. The Fin-
isher Gate Solenoid is a latching solenoid. When a signal is received from the Finisher PWB,
the solenoid will either lift the gate to send paper to the Finisher, or lower it to send paper to the
Sorter/Mailbox.
Figure 1 Finisher Gate
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