Xerox 4213 manual Raster graphics, Raster data

XES COMMAND LANGUAGE MODE

These three types of graphics must be created within the boundaries of a graphic window. (Graphic images that have been digitised into font characters, such as logos or signatures, do not require a graphic window.)

Note: There may be a minor difference in appearance of complex graphics on the 4045 laser printer and the 4213 laser printer.

Raster graphics

Raster graphics are images made up of binary bit maps (0s and 1s) loaded from the host into the graphic window. When the printer receives the bitmap into the window, it prints a pixel on the page for each binary 1 and leaves the pixel blank for each binary 0 (see figure 2-18).

For the printer to receive the bitmap data and interpret it correctly, the data must be sixel-encoded. Refer to the procedure for sixel encoding in appendix C.

Raster graphic data is the default. Unless you select vector or macro graphics with the graphics commands, the printer automatically initialises the window for raster data. If you create a graphics file for raster data, you can add commands for vector graphics at the end of the file.

Figure 2-18. Raster data

2-78 XEROX 4213 LASER PRINTER PROGRAMMER REFERENCE