Re: Photopolymer Photo Gravure Press Questions

[Robert Newcomb <newcombr@uga.edu>]

I don't doubt your experience.
Its interesting in looking through the various catalogs for presses  
that only a few of the companies even make presses with rollers in  
the 10" range. And then, you have to buy a $11000 press with a really  
hugh bed.  Most of the companies offer presses with 6-8 inch rollers  
as the max size.
Robert


On Jul 16, 2008, at 2:45 PM, Jon Lybrook wrote:

> Hi Robert,
>
> Yes, the angle of the curve of the upper roller directly affects  
> the overall pressure.  You can get much higher pressure from an  
> upper drum with a diameter of 10" than one of 4", and high, even  
> pressure is what you want for printing photogravure quality from  
> polymer plates.  I'm not a physicist, but I know I won't print  
> photogravure on a press with a roller less than 10" if I can help it.
>
> Size of the bed is in direct proportion to the size of the plate  
> you want to print.  You should be able to print right to the edge,  
> assuming your pressure is tight and even.
>
> Best wishes,
> Jon
>
> Robert Newcomb wrote:
> > Hello,
> > In regards to printing Photopolymer Photo Gravure, What does the  
> > size (diameter) of the upper roller have to do with a press's  
> > ability to print this plate?   Is it the amount of pressure that  
> > it can apply to the plate?
> > Also, is there a rule of thumb about how wide a press bed should  
> > be in proportion to the size work one wants to print?
> > thank you,
> > Robert Newcomb
> --
> Jon Lybrook
> Intaglio Editions
> http://intaglioeditions.com
> 303-818-5187