PostScript Halftoning Is Different on WinNT Than Win95
Article ID: 152842
Article Last Modified on 11/1/2006
APPLIES TO
- Microsoft Windows NT Workstation 3.5
- Microsoft Windows NT Workstation 3.51
- Microsoft Windows NT Workstation 4.0 Developer Edition
- Microsoft Windows NT Server 3.5
- Microsoft Windows NT Server 3.51
- Microsoft Windows NT Server 4.0 Standard Edition
This article was previously published under Q152842
SUMMARY
The halftone option with the Windows NT PostScript driver does not have any
effect on a document containing text or vector graphics.
MORE INFORMATION
The Windows NT PostScript driver uses the host to perform halftoning when
the option is selected in the PostScript driver. This setting has no effect
on non-image output. If you are just printing text or vector graphics, no
halftoning will be done on the host.
In contrast, the Windows 95 driver does not actually do halftoning on the
host computer. Instead, it sends halftone settings (angle and frequency) to
the printer, and this affects all PostScript drawing operators including
vector graphics and text.
When the Halftoning option is selected in the Windows NT PostScript driver,
the driver performs halftoning on the host. This only works when the source
data is bitmap. If the source data is text or vector graphics, the driver
doesn't have any bitmap information to work with. Instead, it generates
appropriate PostScript operators and sends them to the printer. These would
then get halftoned by the printer.
Keywords: kbprint KB152842