![]() Printers featuring a PS raster image processor (RIP), however, are still relatively expensive:Īlready in the 90s, "software-RIPs" (e.g., ghostscript) became popular. If the book got professionally published, the $10,000,000 industrial printer could process the same PS document to render it at 1200x1200 dpi.Ģ0 year later, the CPU power and available amount of RAM is 4,000 times higher. Instead of equipping every workstation with enough RAM and CPU power to render pages at 200x200 dpi (not to speak about the disk sizes and network throughput one needs to store and transfer the resulting documents), it was enough to have one $10,000 laser printer to do the job for the complete department. Industrial printing machines used by publishers were already able to cope with much higher resolutions.īy delegating the computational intensive part to use-time, that is, the printing device, PS provided portability between all these devices and made it possible to prepare high-quality documents even on affordable computers. However, even at that time, a laser printer was able to print a page with 200x200 dpi or more. Going higher (300x300 or 600圆00 dpi) was basically impossible. Rendering a complete A4 page at 150x150 dpi resolution on such a system was already challenging.
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