Auto Color Adjust; Paper Prompts; Env Prompts; Font Sharpening - Lexmark C78x Service Manual

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Auto Color Adjust

Automatic color adjustments periodically occur during printing, based on internal algorithms. The following
situations prompt the adjustment:
•
If the printer detects a new or different color cartridge is installed, usually at power on or when the cover is
closed.
•
If the printer detects a new or different ITU is installed, usually at power on or when the cover is closed.
•
If the fuser detects at power on that the fuser temperature is at 60° C.
•
If Power Saver has been active for eight hours or more.
•
If the printer was turned off during a calibration cycle.
•
At the Ready state, if one of several internal engine parameters has exceeded a given threshold.
•
If requested by the user from the operator panel or by a PJL command.
•
At the Ready state if more than 500 pages are printed since the last calibration. This value can be adjusted
in this menu.
Selecting Off disables all Auto Color Adjust prompts listed above except the request of the user or the PJL
command.
1.
Select Auto Color Adjust from the Config Menu.
2.
Select Off or a value from 100 to 1000. The default value is 500.
Use to increase the value.
The values are in increments of 50. The default is 500 pages. The number refers to how many pages since the
last calibration before recalibration begins automatically.

Paper Prompts

Setting Paper Prompts controls which tray a change prompt is directed to when paper is sensed to be the wrong
size.
1.
Select Paper Prompts from the Config Menu.
2.
Select Auto, MP Feeder, or Manual Paper.

Env Prompts

Env Prompts controls which tray a change prompt is directed to when the envelopes are sensed to be the wrong
size.
1.
Select Env Prompts from the Config Menu.
2.
Select Auto, MP Feeder, or Manual Envelope.

Font Sharpening

Font Sharpening allows the user to adjust the value of the high frequency screens used for font data. For
example, if the value is 24, all fonts 24 points and less use the high frequency screens.
1.
Select Font Sharpening from the Config Menu.
2.
Select a value from 1 to 150. The default value is 24.
Use to increase the value. The increment is 1.
This feature only works in PostScript emulation.
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Service Manual