FLAAR Reports - Wide Format Printers

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FLAAR Reports - Wide Format Printers

FLAAR REPORTSPreview of Photo Wide Format Printer Series7Resolution: How much DPI do you need for InkjetPrinting? New, May 2003.This report actually informs you the different requirementsfor thermal printheads (Canon, Encad, ColorSpan, andHP) vs piezo printheads (Epson, Mimaki, Mutoh, Roland).Professor Hellmuth also adds facts on what resolutionis required for RGB laser light imagers such as DurstLambda, LightJet. Dye sub dye transfer printers (wax orresin ribbons) are a different technology again, and requirea resolution which is not the same as inkjet. Everythingon resolution, for your scanner, for your digital camera, foryour printer, are all contained here.This report helps you how to understand the mumbo-jumboof DPI and Resolution• What DPI to scan at?• What DPI do you need to photograph at?• What DPI does your printer really need?Professor Helmuth cuts through some of the nonsense about 2880 dpi as well as analyzes the conceptof “apparent resolution.” We have noted a fair amount of misunderstanding of these terms, especiallyrelative to the Iris (apparent resolution of 1500 dpi), the ColorSpan in 12 color mode (apparent resolutionof 1800), and the LightJet and Lambda (apparent resolution of 4000 dpi).Learn the ploys manufacturers use to trick you into falling for their advertising claims. First, virtuallyno one uses 2880 dpi after their first attempt. Most commercial labs skip 1440 dpi as well (too slow,uses too much ink). The average user sticks with 720 dpi. Thus we have to smile when we see specstouting 2880 or 1440 dpi. It takes a Roland Hi-Fi Pro a precise two entire hours to do a full sized printat full 1440 dpi. In that same time the Hewlett-Packard 5500 would have filled the room with flawless1200x600 dpi prints, photo-realistic museum quality. We know because our research facility is on auniversity campus associated with two art museums on the other side of the campus.ContentsGeneral introduction to digital imagingresolutionResolution of a camera lens vs resolutionof a digital camera sensorWhere in the software do you handleOutput Resolution?Print resolution for desktop publishing(laser printers)Print resolution for solid ink printersPrint resolution for desktop digital photoprintersPrint resolution for dye sub printers,desktopPrint resolution for hybrid desktop printers,such as Fuji PictographyPrint resolution for large format dye subsuch as MatanPrint resolution for large format LED andlaser light digital imagersPrint resolution for inkjet printers: desktop,tabloid, and large formatPrint resolution for oil-based inkjet printersPrint resolution for grand format solvent inkprinters (Vutek, etc)Print resolution for electrostatic printersCalculating File Size: Translating Pixels toResolutionInterpolating UpInterpolating DownHow much resolution do you really need?Clever way to Damage your Digital ImagesFile compressionWhat camera can provide lots of dpi?A quick primer on digital cameras as input forwide formatWhat about software enlarging of images?Where some books cover pixels and resolution(also see all glossaries)Resources on the Internet which discussResolutionPictures showing resolution

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