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Figure 4 Duplex Automatic Document Feeder (DADF)
Paper Transportation
Paper transportation retrieves sheets of blank copy media from the selected source, registers
them, and moves them to the IBT. In addition, Paper Transportation automatically detects the
size of media from the Tray 5 and automatically detects transparencies.
Xerographics
The Xerographics Module develops the latent image written onto the Photoreceptor Drum by
the ROS, transfers the developed image onto the Intermediate Belt Transfer (IBT) and transfers
the image(s) to the paper. This process comprises the following steps:
1.
The ROS writes the image onto the charged Photoreceptor Drum, creating a latent elec-
trostatic image. This is done once for monochrome images and once per color or four
times total for color images.
2.
The latent image is developed by depositing toner of the proper color onto the Photore-
ceptor Drum. This is also done once for monochrome images and four times for color
images.
3.
The toner comprising the developed image is transferred from the Photoreceptor Drum
onto the Intermediate Belt Transfer (IBT) Belt. The residual toner and image charge are
then removed from the Drum. This is the last step which is done a different number of
times for monochrome and color images.
Reissue
DocuColor 12/DCCS50
DADF INPUT
TRAY
DADF OUTPUT
TRAY
4.
All of the components of the developed image are transferred from the IBT Belt to blank
copy media. After the image is transferred to the blank media, the image charge and
residual toner are removed from the IBT Belt, preparing the IBT Belt for the next charging
cycle.
5.
The unfused copy is moved from the IBT to the Vacuum Transport, so that it can be
moved to the Fuser Assembly.
Fuser Assembly
The Fuser Assembly
(Figure
5) receives the unfused copy, fuses the image to the copy mate-
rial and moves the copy to the output device or inverter. The Fuser Assembly uses heat and
pressure between two rollers to bond toner on to the copy media. The Heat Roll is both inter-
nally and externally heated, while the Pressure Roll is internally heated.
Figure 5 Fuser Assembly
Mailbox/Sorter and Offset Copy Tray
The combination of the Mailbox/Sorter and/or OCT can stack completed copies in a variety of
ways, depending on the mode selected by the operator.
•
Collated sets
•
Uncollated sets
•
Sorted by user
1/05
10-9
Principles of Operation
Principles of Operation Overview
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Table of Contents
Troubleshooting
