HP LaserJet 4100 HP PCL/PJL reference (PCL 5 Printer Language) - Technical Ref - Page 3
An Introduction to HP-GL/2 Vector Graphics
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17 An Introduction to HP-GL/2 Vector Graphics Note The PCL 5 printer provides the ability to print vector graphics using the HP-GL/2 graphics language. HP-GL/2 graphics may be created within application software, or imported from existing applications. For various types of images (many technical drawings and business graphics, for example), it is advantageous to use vector graphics instead of raster graphics. The advantages include faster I/O transfer of large images and smaller disk storage requirements. As a guideline, use raster graphics for small, complex images, or those images that cannot be accomplished with HP-GL/2 (such as scanned photographs). Use HP-GL/2 for images that would involve a large amount of I/O data transfer if printed using raster graphics, or for drawings that are already in HP-GL/2 format. If the image is easier to describe using vectors instead of raster lines, the image usually prints faster using HP-GL/2. Printing with HP-GL/2 requires leaving the PCL printer language mode and entering HP-GL/2 mode. Switching between modes involves only a few commands, and software applications easily switch between the two modes as needed. EN 17-1