1.5.2 Additional guidance items
Explain the following if the user is unfamiliar with the subject items.
Stacking duplex copies
When a large number of duplex copies (100 copies or more) are produced, we recommend using
the finisher so they are stacked in the shift tray because toner from the stacked copies on the cop-
ier’s copy tray may be deposited by heat.
How the main switch is used
The ozone exhaust fans and transport vacuum fan continue to operate when the main switch is
OFF to discharge air from the machine. This prevents image deterioration on the OPC caused by
fumes, which is produced by the corona discharge. Also, heaters turn on when the main switch is
OFF and prevent condensation on the mirror and lens and damp paper in trays. Advise users never
to pull out the power plug or shut off power from the source. Tell them to use the main switch to
power off.
Toner cartridge replacement
Used toner is collected in the toner cartridge and is never used again because it cannot be used for
copying. Direct users about the following points.
1. Never pull the shutter again after the cartridge is set. If the shutter is pulled, the collected
toner is used again.
2. Firmly pull the vinyl sheet on the shutter when installing a new cartridge. If not, only about
half the amount of toner in the cartridge will fall to the development unit. This may cause a
used toner blockage on the way from the cleaning unit.
Loading paper
When loading paper in the paper trays, do not exceed the load limit. It is indicated by a decal. If pa-
per is excessively loaded, the top of the paper stack may hit the pick-up roller and damage it when
the paper tray is set.
Loading original
When loading paper on the original table of the ADF, keep the maximum capacity (40 sheets for A3
or 11" x 17" original and 80 sheets for the other sizes original). The load limit is indicated by a de-
cal. If originals are excessively set in the ADF, original misfeeding or multifeeding may occur be-
cause of the original separation system. The air knife cannot separate the originals when weight of
the original stack is too heavy.
User Guidance Items 1 July 1994
1-20
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