Digital BW, The Print

Just so no one reading this gets confused, I assume the Steve means  
Gaussian Noise at 2% not Gaussian Blur at 2%.

The traditional method of smoothing out banding gradients in the  
printing world is to apply random luminance noise to the problem  
areas. Adding Blur will do nothing, or actually make things worse.

Depending upon the image, you might try a subtle Grain filter (In the  
Texture menu in Photoshop) to the problem area. The options of type  
of grain, contrast and intensity give very good control of the  
structure of the noise and allow you to match it to the character of  
the rest of the image very closely.

James Haney



On Sep 27, 2007, at 2:39 PM, Steve Kale wrote:

> Gaussian 2%
>
> From: brouwerkent <philip@accentonrugs.com>
> Reply-To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Date: Wed, 26 Sep 2007 04:36:26 -0000
> To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Subject: [Digital BW] Printing solid black border...
>
> Question regarding minor issue with 2200 using K4 inks.
>
> I am printing some photographs with quarter inch black borders. I
> notice that only on the border areas, I am getting some very subtle
> dark banding. This has nothing to do with nozzles or head alignment.
> Solid areas within the individual photographs are fine....only
> noticeable on a photoshop layer of solid black fill.
>
> My assumption here is that on the layer that is a solid color..that I
> should put some sort of noise into that layer...just enough noise to
> make a dither...but not enough to take away from the density.
>
> Suggestions on what kind of noise...and how much so that this minor
> variation goes away????
>
> By the way, I am using Innova F Type. On Matte or Lustre with some
> texture...this is not noticeable.
>
> So, for all you experts...what is the best kind of Photoshop noise
> that would make a solid black print that way...but hide the minor dark
> banding.
>
> Thanks in advance.
>
> Phil
>
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>
> 



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