HP qms 1660 Manuale Utente

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Emulations
4-27
Printer Configuration
Setting PostScript Parameters
Emulation Level
This menu allows you to select a PostScript emulation level.
Gamma Correction
This option enables or disables gamma correction for PostScript files. 
For more information, see chapter 5, “Additional Technical Informa-
tion,” in the 
Reference
.
Menu
Administration/Emulations/PostScript/Emulation Level
Choices
Level 2—For PostScript Level 2 files and most Level 1 files.
Level 1 B/W—For files that contain only black-and-white 
PostScript Level 1 operators. This mode does not support 
the PostScript color operators; the use of color operators 
could cause the print job to fail.
Level 1 Color—For files that contain color PostScript Level 1 
operators. This mode accepts color PostScript Level 1 
operators and translates these commands to the 
appropriate grayscale. This is the recommended setting for 
Level 1 compatibility since it contains all of the commands 
in Level 1 B/W and the color commands.
Default
Level 2
Notes
In general, we recommend that you use the Level 2 option. 
Use the Level 1 B/W and Level 1 Color options only if you have 
files prepared in an application which is not fully compatible 
with Adobe’s PostScript Level 2 page description language.
Menu
Administration/Emulations/PostScript/Gamma Correction
Choices
No—Disables gamma correction
Yes—Enables gamma correction, which adjusts the range of 
gray levels to give you the best possible image. Gamma 
correction sharpens overall mid-range contrast while blacks 
(shadows) and white (highlights) keep their original values. 
You can use this option to correct gray-scale problems or to 
accenturate detail for scanned images.