This page last changed on Aug 22, 2008 by johannaf.

New "FDRP Enhanced" Dot Pattern

  • Improved FDRP Enhanced produces finer, smoother output in light areas, solid fills and edge details
  • Greatly reduces leading edge effect over FDRP dot pattern
  • New modes will have to be created and profiled to take advantage of this new dot pattern
  • Primarily for "Fixed-dot-size" print modes
    • Variable dot print modes might find a Stochastic dot pattern more preferable because of vardot placement and speed issues
    • FDRP Enhanced takes about 2.5 times longer than Stochastic

Note: This does not replace the existing FDRP dot pattern, or change the quality of any existing profiles. This option that has other color characteristics, therefore it is a new dot pattern and not a modification of the existing FDRP dot pattern. When choosing a dot pattern to profile you need to consider speed vs. quality in a production environment.

To enable this option within Media Manger:

  1. Within Media Manager, click > Configure Devices> Configure Printer Capabilities.
  2. Select the "Dot Pattern" icon on the left-hand side
  3. Enable the checkbox for FDRP Enhanced - this will display the option during the profiling workflow.

7.2 Speed Testing with Different Dot Patterns

  • OS: Windows XP
  • System Specs: Pentium 4, 3.2 GHz CPU, 2 GB RAM
  • File: ONYX Quality Test
  • Size: 20" x 10.43"
  • Printer: Epson GS6000
  • Mode: Max Quality, 1440x1440, 16pass, Bi-Dir 
    Dot Pattern Stochastic FDRP Diffusion FDRP Enhanced
    Time 2:17 3:55 5:47
      137 sec 235 sec 347 sec
        72% slower than Stochastic 153% slower than Stochastic
          48% slower than FDRP
    Summary Stochastic is the default dot pattern used for most output when you want good quality and the best speed. FDRP Diffusion is an optional dot pattern used for high quality output when you want better quality and speed is not as important. FDRP Enhanced is a new optional dot pattern used for the highest quality output when you want the best quality and speed is not an issue.
    Conclusion Stochastic is the fastest dot pattern.
    FDRP Diffusion takes a little more than 1.5x longer to render than Stochastic. FDRP Enhanced takes a little more than 2.5x longer to render than Stochastic.

See Dot Patterns

See FM Screening

Document generated by Confluence on Nov 19, 2008 16:33