Paper Transfer And Separation - Toshiba e-STUDIO4500c Service Manual

August 2006

6.12.5 PAPER TRANSFER AND SEPARATION

[D]
[C]
This machine employs a repulsive force bias system to transfer the image on the
ITB to paper.
The transfer power pack [A] applies a negative bias to the ITB bias roller [B].
The negative bias from the back side of the ITB applies a repulsive force to the
toner on the ITB surface. This repulsive force pushes the toner from the ITB
surface onto the paper.
This system has two advantages:
The repulsive bias from the front side of the paper has no effect on the moisture
in the paper.
Because the bias is applied from the front side of the paper, the bias can be
applied more effectively, regardless of the level of humidity around the paper.
After the image has been transferred to the paper:
The paper discharge plate [C] (connected to the separation power pack) applies
an ac charge to neutralize the charges on the paper and the ITB.
Next, curvature separation at [D] separates the paper from the ITB when the ITB
makes its abrupt turn toward the top of the machine for the next copy cycle.
IMAGE TRANSFER AND PAPER TRANSFER
[A]
P . P
[B]
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