MemoryQMS 1725E Print System Reference5-14The amount of memory required for each compressed block is printerspecific. The QMS 1725E Print System takes approximately 32 KB ofmemory from the display list for each compressed block. However, ifa page includes raster image data (for example, TIFF or bitmap data),each compressed block requires much more memory.Increasing the amount of memory in this client may improve printingthroughput and minimize slowdowns due to collating or printing com-plex pages. If not enough memory is allocated to this client, memoryis taken from the excess memory client to complete a print job.PostScript Font CacheAlso known as K Mem PS Fonts and Font Cache, this memory clientstores bitmapped representations of previously scaled PostScriptfonts. This process reduces the number of times a font must be con-verted from outline form to bitmap form. Printing pages that havecharacters already stored in the font cache is much faster than print-ing characters not yet in the font cache.As the font cache memory fills, the printer makes room for new bit-mapped characters by erasing those that have been in the cachelongest without being used. By increasing the memory allocated tothis client, the printer can store more characters and spend less timeerasing and replacing characters in the cache. This client has a limitto the maximum point size it will store.Normally, you don’t need to change this memory client unless youuse a large number of fonts at various point sizes. If you do, you mayallocate additional memory to this client to improve printer perfor-mance. There’s no specific formula to use in figuring the amount ofmemory required by the font cache, but after a certain point, largefont caches cause the printer to take longer to print than smaller fontcaches because of the search time through the cache. The recom-mended font cache size is in the following ranges:n 128-256 KB for 300x300 dpi printingn 256-512 KB for 600x600 dpi printingYou should experiment to see what font cache size works best foryou.
