HP manual PCL 5 Color Raster Graphics, Raster Area

PCL 5 Color Raster Graphics

The PCL 5 color raster graphics command set provides support for specifying an image's:

•Dimensions

•Resolution

•Pixel format, also known as the pixel encoding mode

•Compression mode

Large image size is one of the major concerns with raster images. For example, the size of an 8 x 10 inch monochrome image at 150 dpi is 225 Kbytes. The size of a 24-bit color image with the same size and resolution is 5.4 Mbytes. If the color image is 600 dpi, 24-bit color, its size is 86 Mbytes. Therefore, the PCL 5 language supports several compressions modes that exploit redundancy between adjacent pixels or adjacent rows. Furthermore, several shortcuts are available to avoid sending data that is really large blocks of zeros.

Figure 6-1 Raster Area

6-4 Raster Graphics EN