Xerox Document centre 250 series, Руководство пользователя

Страница: 74 / 185

62
4
4.3 Configuring the Printer Drivers
Halftoning (for PCL 6 drivers only)
Halftone refers to a type of pattern that is applied to the printed image. By using a
combination of black dots, these patterns produce a grey appearance on the printed image.
This Halftoning feature is designed to process images (e.g. photographs) but not the
computer generated art (e.g. clip art). The appearance of the printed image will be differed
by the Halftone settings.
Note the different settings available for the different PCL 6 drivers.
For Windows 3.1 and Windows 95/98 PCL 6 drivers:
• Device (default)
Image objects will be rendered by default halftoning attributes.
• Line Art
Provides solid lines and sharp contrasts between shaded areas and it is used for
images with intricate lines.
• Fine
Provides smooth shades of grey.
• Coarse
Provides rough greyscale with high contrasts for images that will be scanned/copied.
• Diffusion
Creates the appearance of grey scales by randomly placing individual dots of ink. Best
for photographic images but requires more processing time. Available only if Raster
is selected for Graphics Mode.
For the Windows NT 4.0 PCL 6 driver:
• Device (default)
Image objects will be rendered by default halftoning attributes. Available only if
Vector is selected for Graphics Mode.
• System
Enables the System Halftoning. Click Halftone Colour Adjustment for system
halftone colour adjustmnent.
Image Enhancement
Enhances the quality of the output image. Default is on.
All Texts to Black
Prints all coloured text (except white) in black. If this is not specified, colours will be
printed in varying degree of greys. Default is off.
EconoMode
Used to reduce the amount of toner the printer uses by using less toner on each page.
When EconoMode is on, text and graphics are printed in grey rather than black. It is
suitable for printing of drafts. Default is off.
Printer Resolution
Specify the resolution for printing at either 400 dpi or 600 dpi. A higher resolution usually
produces a better quality output but it takes a longer time to print. Default is 600 dpi.