Using Prinergy Powerpack, you can view the high-resolution TIFF files used to image plates on ThermoFlex LAMS imaging systems. You can also view TIFFs using Kodak Virtual Proofing System, Copydot Toolkit, or TIFF Assembler Plus software.
Files are typically created at resolutions of 2400 dpi or 2540 dpi. When viewing high-resolution TIFF files for the first time, especially if the TIFFs have been scaled or converted from another system resolution to the appropriate resolution for the ThermoFlex, you may be concerned that the way that the pixels are redistributed on the files could lead to a loss of quality.
Redistribution of pixels occurs when a 1-Bit TIFF file is raster scaled, has a Harmony correction curve applied, or has its resolution changed. These operations all require the removal or addition of pixels. Pixel removal or addition must be done in a randomized manner to prevent recurring patterns in fields of halftone dots, especially if these areas are flat tint (unchanging tonal value) areas. Raster pixel removal is randomized in both the X and Y dimensions. This random pixel removal effectively eliminates moiré patterns in halftone areas, but has the side effect of feathering the edges of straight lines. It is this feathered appearance that may cause concern when you view high-resolution TIFFs at high magnification.
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