Digital BW, The Print

Steadman Uhlich wrote:

> There has been much discussion on this forum about the interactions of inks, pigments and paper coatings
> (which are usually a form of calcium carbonate).  While responding to another forum post on the issue of
> color pigments interacting with the substrate, my old fuzzy brain cells synapsed with a spark that flashed
> to old Michelangelo and his problems with his fresco work in the Sistine Chapel.
>
> I am posting this excerpt below in the hope that you will gain some smile from knowing that artists (and a
> master like Michelangelo) struggled with the media of their times, struggled with longevity issues,
> struggled with pigments and substrates, etc...

<huge snip>

But with frescos, the 'ground' pigments are enormous as compared to the inkjet ground pigments, so, perhaps,
the 'rules' in regard to the calcium carbonate and inkjet stability are different due to the greater surface
area vs. particle mass of these extra-fine inkjet pigments.  On the other hand, I could be completely wrong.
:- )

I'll try and go through that section of the:  'Stability Issues and Test Methods for Ink Jet Materials,
Barbara Vogt, Department of Image Engineering, University of Applied Science, Cologne' paper.

url:  http://www.geocities.com/mortenryhl/index.html


Harvey Ferdschneider
partner, SKID Photography, NYC






[Non-text portions of this message have been removed]

Harvey, 

I would say you are nit-picking...but nits are bigger than those pigment particles too (inkjet or otherwise).  
(grin)

Anyway, my main point is that the issue of pigment+substrate is an "age old problem."  

Regards and Respect, 

Steadman


Harvey Wrote (SNIP):

But with frescos, the 'ground' pigments are enormous as compared to the inkjet ground pigments, so, perhaps,
the 'rules' in regard to the calcium carbonate and inkjet stability are different due to the greater surface
area vs. particle mass of these extra-fine inkjet pigments.  On the other hand, I could be completely wrong.
:- )

I'll try and go through that section of the:  'Stability Issues and Test Methods for Ink Jet Materials,
Barbara Vogt, Department of Image Engineering, University of Applied Science, Cologne' paper.

url:  http://www.geocities.com/mortenryhl/index.html


Harvey Ferdschneider
partner, SKID Photography, NYC






[Non-text portions of this message have been removed]



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[Non-text portions of this message have been removed]

Harvey, 

Argument?  You know I would never want to argue...especially with you...I would never win.  

(Grin.)

Just thought we could use some other topics to take up our time...seeing as how we can't discuss Anthrax and Afghanistan anymore on this forum (rats!).  

Regards, 
Steadman

  ----- Original Message ----- 
  From: SKID Photography 
  To: DigitalBlackandWhiteThePrint@yahoogroups.com 
  Sent: Sunday, October 14, 2001 10:02 PM
  Subject: Re: [Digital BW] Age Old Problem: Inks, Pigments, and Coatings


  But Steadman,
  I thought you *wanted* an argument, ...ah,....er, that is,... discussion.  :- )

  Harvey Ferdschneider
  partner, SKID Photography, NYC


  Steadman Uhlich wrote:

  > Harvey,
  >
  > I would say you are nit-picking...but nits are bigger than those pigment particles too (inkjet or
  > otherwise).
  > (grin)
  >
  > Anyway, my main point is that the issue of pigment+substrate is an "age old problem."
  >
  > Regards and Respect,
  >
  > Steadman
  >
  >
  > Harvey Wrote (SNIP):
  >
  > But with frescos, the 'ground' pigments are enormous as compared to the inkjet ground pigments, so, perhaps,
  >
  > the 'rules' in regard to the calcium carbonate and inkjet stability are different due to the greater surface
  >
  > area vs. particle mass of these extra-fine inkjet pigments.  On the other hand, I could be completely wrong.
  >
  > :- )
  >
  > I'll try and go through that section of the:  'Stability Issues and Test Methods for Ink Jet Materials,
  > Barbara Vogt, Department of Image Engineering, University of Applied Science, Cologne' paper.
  >
  > url:  http://www.geocities.com/mortenryhl/index.html
  >
  >
  > Harvey Ferdschneider
  > partner, SKID Photography, NYC


  [Non-text portions of this message have been removed]


        Yahoo! Groups Sponsor 
              ADVERTISEMENT
             
       
       

  Please visit the Group Homepage to check the Files, Bookmarks, Polls and other resources as they are often being updated. The page is at:

  http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint

  Please follow these basic guidelines:
  - Include your full name with your message.
  - Include the address of your website, if you have one.
  - As threads develop, trim off excess portions of earlier messages to keep them short.
  - As the topic of a thread changes remember to change the subject header.
  - Good manners are required at all time. No personal attacks or "flames."
  - Complete your Yahoo profile.
  - Before posting a question, search the message archives and the various resources on the homepage. 




  Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. 



[Non-text portions of this message have been removed]

But Steadman,
I thought you *wanted* an argument, ...ah,....er, that is,... discussion.  :- )

Harvey Ferdschneider
partner, SKID Photography, NYC


Steadman Uhlich wrote:

> Harvey,
>
> I would say you are nit-picking...but nits are bigger than those pigment particles too (inkjet or
> otherwise).
> (grin)
>
> Anyway, my main point is that the issue of pigment+substrate is an "age old problem."
>
> Regards and Respect,
>
> Steadman
>
>
> Harvey Wrote (SNIP):
>
> But with frescos, the 'ground' pigments are enormous as compared to the inkjet ground pigments, so, perhaps,
>
> the 'rules' in regard to the calcium carbonate and inkjet stability are different due to the greater surface
>
> area vs. particle mass of these extra-fine inkjet pigments.  On the other hand, I could be completely wrong.
>
> :- )
>
> I'll try and go through that section of the:  'Stability Issues and Test Methods for Ink Jet Materials,
> Barbara Vogt, Department of Image Engineering, University of Applied Science, Cologne' paper.
>
> url:  http://www.geocities.com/mortenryhl/index.html
>
>
> Harvey Ferdschneider
> partner, SKID Photography, NYC


[Non-text portions of this message have been removed]