PReS/VPS

VPS (Variable Print Specification) was developed by CreoScitex Corporation as an optimised form of PostScript for handling variable data applications.

Standard PostScript processing discards image data once the page has been printed, so that images that appear on subsequent pages have to be re-processed, causing a potential slow-down in processing performance. This problem can be very significant for variable date applications where images are often used repetitively. This may be compared with short-run publishing applications where images are typically only used once per document.

VPS datastreams reference images that have been pre-loaded and held within the RIP (Raster Image Processor). This enable images to be processed once and then cached for re-use on subsequent pages or even subsequent print runs.

PReS/VPS was developed to allow PReS users to output a VPS data stream so that you can benefit from the performance advantages of this optimised PostScript print stream definition. It is based on PReS 2000/PostScript and uses the 'MODEL' command to exercise the VPS features.

Standard PReS/PS can be used with color PostScript devices, but the printer/RIP performance is usually considerably slower than with the VPS module.

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