Gestetner G060 Service Manual page 279

6.7.3 TRANSFER AND CLEANING CURRENT
[E]
[B]
The transfer charge brush [A] applies a current to transfer the toner to the paper
[B].
The high voltage supply board – T, PA, CL [C] applies a current to the brush, paper
attraction roller [D], and cleaning roller [E].
These currents, except for cleaning, are automatically corrected for paper size,
temperature (measured by the thermistor on the right side of the laser optics
housing unit), and humidity (measured by the humidity sensor).
Available adjustments are summarized below.
• The transfer brush current for each printing mode (color or B/W, resolution, paper
type) can be adjusted with SP2-301-1 to -56. The by-pass tray settings are used
when the duplex unit has not been installed and the user is making duplex prints
manually from the by-pass tray. There is a correction for narrow-width paper with
SP2-309-1 to -4.
• The current for paper attraction can be adjusted with SP2-801-1 to -9. There is a
correction for narrow-width paper with SP2-801-10 to -13.
• The current for cleaning cannot be adjusted.
The back-up rollers [F] before the transfer charge brushes for each color make a
wider contact area between the drum [G] and the belt. The other rollers are
grounded to neutralize the belt surface.
SM
IMAGE TRANSFER AND PAPER SEPARATION
[G]
[A]
[F]
[C]
6-49
[D]
G060D404.WMF
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