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194 Advanced settings ENWW
To change the optimize value
Use this item to optimize a number of engine parameters for all jobs rather than by media
type. Each item can be set to O
FF or ON. The default value of each item is OFF. Use the
RESTORE OPTIMIZE option to reset all options to the factory default position (O
FF).
● TRANSFER DOWN 1, TRANSFER DOWN 2, TRANSFER UP 1, and TRANSFER UP 2: These
settings control T2 current to correct for media types that show poor secondary
transfer when a predefined media type setting is used. Try the DOWN 1 and DOWN 2
settings first. This might result in a darker image. If it does not, some medias require
that the value is set to UP 1 or UP 2. It is possible to set these O
N at the same time. If
multiple bits are set, the default (all O
FF) is used. Using smoother media results in
better transfer; exceptionally rough media can show problems that will not be
addressed by these settings.
● LEADING EDGE DOWN and LEADING EDGE UP: Use these settings to compensate for poor
transfer, missing toner, discharge marks, and mottled appearance on the leading edge
of printed pages. To resolve these issues, try setting LEADING EDGE DOWN first;
however depending on the media type, you might get better results using LEADING
EDGE UP. LEADING EDGE UP set to O
N increases the leading edge secondary transfer
bias. LEADING EDGE DOWN set to O
N decreases the leading edge secondary transfer
bias. If the UP and DOWN settings are both set to O
N, they are set to OFF.
Note Try the other media type settings first, because this is a universal setting and applies to all
pages that are printed, regardless of the selected media type.
● HIGH COVERAGE 1, HIGH COVERAGE 2, and HIGH COVERAGE 3: HIGH COVERAGE 1 and
HIGH COVERAGE 2 control the setting of the yellow dot pattern that is designed to
eliminate certain types of banding (47 mm) in high coverage.
• HIGH COVERAGE 1: Yellow dots appear in a 10 x 10 mm pattern for half-speed
printing, and an 8 x 8 mm pattern for full-speed printing. The default is O
FF; when
set to O
N, the yellow dots are off. If the yellow dots are objectionable and the
47 mm band is acceptable (a line or band is visible once at 47 mm from the start
and the stop of a strip of color), turn this item O
N. Otherwise, leave this item OFF.
• HIGH COVERAGE 2: Yellow dots appear in an 8 x 8 mm pattern for full-speed printing,
and 10 x 10 mm for half-speed printing. The default is O
FF; when set to ON, the
yellow dots are in an 8 x 8 mm pattern for half- and full-speed printing. If a line
recurs every 47 mm from the start of a strip in half-speed printing modes, turn this
item O
N. Otherwise, leave this item OFF.
● High coverage 3 helps with 50 mm to 100 mm bands or cardstock band (37 mm from
the trailing edge of 11 x 17 [A3] or 115 mm from the trailing edge of letter [A4] on
media that is heavier than 120 g/m²)
● HIGH COVERAGE 3: This changes the OPC ITB speed mismatch (101.5% [OFF] to 102%
[O
N]). The default is OFF. If a line or band recurs at 50 or 100 mm intervals (37 mm
from the trailing edge of 11 x 17 [A3] and 115 mm from the trailing edge of letter [A4]
on media heavier than 120 g/m
2
), turn this item ON for half-speed media types. Do not
change this setting to O
N unless the bands are very objectionable. If you do this
47 mm banding might increase.