Electrostatic transfer/transport belt (ETB) unit
The ETB unit feeds the paper through the printer and helps transfer toner onto the paper.
Figure 5-18. ETB unit illustrates the ETB unit.
Figure 5-18.
ETB unit
The physical components of the ETB unit are the following:
●
ETB belt
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ETB feed roller
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attaching roller
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transfer charging rollers (four)
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ETB-driven rollers (three)
The ETB motor drives the ETB feed roller, causing the belt to rotate. All other rollers are
driven by the belt rotation.
A sensor at the top of the ETB unit detects the ETB’s speed. The DC controller maintains a
constant ETB feed speed to ensure good color registration.
154 Chapter 5 Theory of operation ENWW
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