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JV33 and gradients

Discussion in 'Mimaki' started by jon vital, Oct 1, 2009.

  1. jon vital

    jon vital Member

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    Sep 29, 2009
    uk
    Is anyone having problems printing smooth gradients on the JV33?

    We are getting lots of stepping which looks really poor. Rip is Shiraz.
     
    Tags:
  2. Marie

    Marie Member

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    Jan 31, 2005
    Hattiesburg, MS
    In Flexi, you can click "super blends" in the production manager, and that helps. Maybe yours has an equivalent.

    For me, gradients print better from photoshop files, not vector files. Often, I'll convert Illy to Photoshop then print my gradients.

    Good Luck :)
     
  3. Alwayon

    Alwayon New Member

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    Jun 24, 2009
    Ah... try 16 bits (instead of 8 Bits) rendering in RasterLink ?
    I read it somewhere....
     
  4. DigitalBBQ

    DigitalBBQ Member

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    Oct 11, 2008
    Is your printer doing bad gradient 24/7 ?
    Check your original output file first, and reexam your file, or do simple test by print on different printer if available. Sometime it may just be the gradient bitmap itself causing that. Or resample your gradient, and export them as tiff with higher bits and reprint. Some RIP engine do get confuse with eps files; tiff files usually more forgiven. Some gradients once it's enlarged from original size, it may cause pixels information on your final output file to be undesirable due to rasterization. Do all your gradients in high resolution when you didn't use vector base software to create gradient, but factor your size dimension to just inches to keep file size manageble, then once gradients applied, enlarge back to actual size but using Photoshop will limit your enlargement method to bicubical calculation which is o.k. but not super sharp. If you create your gradient in vector base software, u can import the EPS gradient into photoshop and assign it as 150dpi, but artwork of actual size and let photoshop rasterize the eps gradient for u, and then export as tiff to send to you rip. Most RIP engine convert vector to bits rate anyway, so to prevent hard gradient block convert to tiff is one option. Besure to assign color profile and color mode correctly to your file from input to enlarge to output. Inkjet printer do well at 150dpi for large size prints even 100dpi with good dither setting on your RIP, dither type of error diffusion seems universal, 720x720 resolution rip should be ideal for quality gradient file(s). How you execute/applied your gradient to the artwork, and RIP setting is critical for smooth gradient output. Photoshop, Illustrator, Flexsi, Corel Draw, these software generate gradient differently and using different save method, so when you converting to output it can get a little tricky! Think of inkjet printer as a spray paint head, how it spray and what it want to spray is the user's limit and setting. Funny thing is that the advertise of RIP engine doing 16bits rendering, isn't that meaning the rip can do it faster but not necessary clearer? At least not clearer on all file type! or perhap only certain file type for that matter!
     
    Last edited: Oct 4, 2009
  5. staffordcox

    staffordcox New Member

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    Jan 18, 2010
    What file type are you trying to output with? If it is a PDF, you are probably going to be best off buying the latest version of Shiraz with the Adobe plugin. If not, try rasterising the file in Photoshop and saving as a big EPS file, this may help
     
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