Transfer Belt Charge
Transfer Belt Charge Mechanism
The high voltage supply board [A] applies a positive current to the transfer belt [B] through the terminal
block [C], terminal plate [D], and the bias roller [E].
The high voltage supply board adjusts the current to the roller to keep a small but constant current flow to
ground through the belt, paper, and drum. If this current is not kept constant, efficiency of toner transfer
and paper separation will vary with paper thickness, type, environmental condition, or changes in transfer
belt surface resistance.
Correction for Paper Width and Thickness
A range of SP modes is available in order to adjust the machine so it can handle papers of non-standard
size and thickness.
For paper width, there are two thresholds. The factory settings are 150 mm (5.9”) and 216 mm (8.5”).
Below 216 mm, the transfer current can be increased. By default, the current is multiplied by 1.2 for the
main machine paper trays. For paper widths below 150 mm, the transfer current can be set higher, but by
default it is kept the same as the current for paper widths below 216 mm. The higher current allows for the
Image Transfer and Paper Separation
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