This section describes the Microsoft Windows NT-based operating system graphics device interface (GDI). It then details the support that GDI provides to graphics drivers. References to GDI in this section are implicit references to kernel-mode GDI; Microsoft Win32 GDI will be explicitly identified. Brother GDI printer driver for Windows ® (For HL-2030 and HL-2040) Generic PCL Driver (For users of Citrix ® MetaFrame ®, Windows ® Terminal Server environments and other Windows NT 4.0 ® and Windows ® 2000/XP network shared environments, we recommend the use of our Generic PCL Driver. Here is further explanation on GDI, PCL and Post Script. GDI: Shorthand for G raphical D evice I nterface, this is a Windows standard for representing graphical objects (not text) and transmitting them to output devices such as monitors and printers.

Printers use a set of operating commands that determine how data sent from the computer is interpreted and acted upon.

Further explanation on GDI, PCL and PostScript:

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GDI: Graphics Device Interface
This was originally developed by Microsoft for use within Windows. Graphics and text objects are represented as a raster image by the Operating System and transmitted to output devices such as monitors and printers without the need to convert to another format such as Postscript or PCL. When GDI printing is used the majority of processing takes place within the Operating System.

PCL: Printer Command Language
This is a page description language originally developed by HP; it allows the printing device to share in the processing of some of the data thus freeing up the Operating System for other tasks. PCL allows for finer control and consistency across Operating Systems, printer devices and print jobs when compared to GDI printing, however it has fewer features than PostScript.

PS: PostScript
This is a page description language developed by Adobe Systems. PostScript can be used by a wide variety of computers and printers and is the dominant format used for desktop publishing. Documents in PostScript format are able to use the full resolution of any PostScript printer because it describes the page to be printed in terms of primitive shapes which are interpreted by the printer’s own controller. PostScript is often used to share documents on the Internet because of its ability to work on many different platforms and printers. If the file to be printed contains an EPS-embedded file, only a PostScript printer can render it correctly.

Each format has its own unique purpose.
If you need assistance determining the proper format to use, please contact your local support office for assistance

In some cases, users want to use the GDI printer driver when there's no PCL printer available, such as for faxing. But sometimes, the print quality is not as good as with the PCL driver. To understand why, it helps to understand how the printer drivers work with fonts.

In the Windows world, users often use TrueType fonts. Windows printer drivers create bitmap representations of those fonts as needed from the information contained in the TrueType fonts during printing. These programs try to make the printer look like the screen.

To the system, the user usually dictates that fonts that already reside on a Xerox printer be used. This gives the system the challenge of working backward from those fonts and trying to represent the output on the screen. The system tries to make the screen look like the printer, not the other way around. We can convert Xerox bitmap fonts to PCL bitmap fonts without too much trouble, but we do not have the technology to create TrueType screen fonts from Xerox or PCL fonts. Even if we did, there are licensing issues.

GDI print quality correlates to the fonts used for display, compared with the attributes describing those fonts. What you see on the screen is how GDI print will look. So, the key to improving GDI print is to improve the fonts used in the display system, and to match substitutions, attributes, character widths, and scaling attributes. Some of this can be improved by making sure the font widths and family names are correct.

There are INI options you can use to improve the substitutions, if you cannot match the names. For the best results, use screen fonts that match exactly.

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The system comes with a set of TrueType fonts that match the included printer fonts. Usb generic driver download. Install and use these fonts if possible. If, however, you are working backward from an end-user's existing fonts, you will have to get the matching fonts or use fonts that are similar.

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Xerox can create PostScript fonts from Metacode fonts for you. There are tools that will convert a PostScript font to a TrueType font. With the proper fonts installed, and with the proper FXR settings, GDI print will match the bitmap font print quality very closely.

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