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Lexmark T640 - Page 206

Lexmark T640
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3-36 Service Manual
4061-xx0
The quality menu operator panel options can be adjusted to help improve print quality.
In addition, the Enhance Fine Lines and Gray Correction options can be enabled to improve print quality. These
settings are available on the driver and on the printer Embedded Web Server (EWS) interface. For more
information about these options, see the driver Help.
Quality menu operator panel options
Menu selection Purpose Values
Print Resolution To select printed output resolution 600 dpi (default setting)
1200 Image Q
1200 dpi
2400 Image Q
Toner Darkness Lightens or darkens printed output
and alters toner consumption
1–10 8 is the default setting.
Select a lower number to lighten the
printed output or save toner.
Brightness Adjusts the gray value of printed
graphics and pictures
-6 – +6 0 is the default setting.
Contrast Adjusts the contrast of printed
graphics and pictures
0–5 0 is the default setting.
Enhance Fine Lines and Gray Correction options
Driver option Purpose Values
Enhance Fine Lines A selection to enable a print mode
preferable for certain files
containing fine line detail, such as
architectural drawings, maps,
electronic circuit diagrams, and flow
charts
On In the driver, enable the check box.
Off* In the driver, disable the check box.
Gray Correction Automatically adjusts the contrast
enhancement applied to images
Auto In the driver, enable the check box.
Off* In the driver, disable the check box.
High Frequency Text
Screening
Improves edge definition of text
when printing gray-filled text.
On* In the driver, enable the check box.
Off In the driver, disable the check box.
Values marked by an asterisk (*) are the factory default settings.

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