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Confidential
- Selectors 3 and 4: Protection of platen from no-paper printing to prevent
stains(Functional restriction on the paper width sensor)
The setting made by these selectors applies to such printing that is assumed to
be at a high resolution, that is, printing from a PC or USB flash memory, copying.
If these selectors are set to "0, 0," the machine automatically determines the
functions of the paper width sensor depending upon the print resolution selected.
Therefore, in low resolution printing, e.g. when the "Fast" print quality is selected,
the paper width sensor is automatically disabled. On the contrary, in high
resolution printing, e.g. when the "Highest" print quality is selected, the sensor is
automatically enabled.
Setting these selectors to "1, 1" disables the paper width sensor to save the
sensing time for higher throughput.
- Selectors 5 and 6: Assurance print 1 and 2
Enabling assurance print 1 or 2 causes the machine to mix black ink and a little
of cyan ink to use in monochrome copy or in monochrome FAX reception and list
output, respectively.
If black ink is not jetted out normally, cyan ink can be substituted for black ink in
printing. This ensures that in list printing (in which data once printed will be
deleted) the data will be preserved as a printout.
- Selectors 7 and 8: Workaround for false jam detection
(Functional restriction on the paper width sensor)
The setting made by these selectors applies to the FAX, list, index printing and
test printing.
When colored recording paper is used, for example, the paper width sensor
might misdetect the paper present state as "no paper loaded" due to the
recording paper’s color. Limiting the paper width sensor functions with these
selectors avoids detecting such a false paper jam.
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