Lexmark W840 - Page 12

Print quality and troubleshooting
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Print quality and troubleshooting
Many print quality problems can be solved by replacing a supply or maintenance item that has reached the end
of its intended life. Check the operator panel for a message about a printer consumable. See the User’s Guide
for information about other ways to identify consumables that need to be replaced.
The Quality Menu operator panel options can be adjusted to help improve print quality. For more information
about these menu options, refer to the Menus and Messages Guide on the publications CD.
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, refer to the driver help.
Menu selection Purpose Values
Print Resolution Defines the number of dots printed per inch
(dpi).
600 dpi
1200 dpi
2400 Image Quality*
Toner Darkness Lightens or darkens printed output and
conserves toner.
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 objects. -6 – +6 0* is the default setting.
Contrast Adjusts the contrast of printed objects. 0–5 0* is the default setting.
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.
Note: When set to Auto, this feature disables
the manual Brightness and Contrast controls.
Auto* 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.