Taurus-C1 Training
23
Slide 23
Printing Process Overview
Each PCDU has a drum with a drum cleaning unit, charge roller unit, and
development unit around it. This configuration is the same in each PCDU.
The toner image written onto each drum by the laser is attracted to the image
transfer belt (ITB) by the positively charged image transfer rollers.
The four toner images from the four drums are laid down on the image transfer belt
during the same pass.
The completed four-color image is pushed onto the paper by the negative charge of
the ITB bias roller, which is above the paper transfer roller (PTR).
KCMY
PCDU
Drum
Image Transfer
Belt (ITB)
ITB Bias Roller
Image Transfer
Roller
A transfer power pack in the ITB unit applies a positive charge to the image
transfer rollers and a negative charge to the ITB bias roller.
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