QTR-Quadtone RIP

Hi Roy,

This is a problem I have had with Epson HW Matte as well.  The print 
head scrapes the paper and scratches the ink right off - so the 
scratches are spaced at 1 per print head pass across the paper. 

This seems to be caused because the Epson HW Matte paper swells a 
bit when it is saturated with ink... and this paper is VERY easy to 
saturate with ink.

Since HW Matte paper is thin, it does not exhibit the usual "thick 
paper" problem of the print head knocking against the edge of the 
page at the beginning or end.  But the swelling is a problem.

Using the Epson driver, I have resolved this issue by using 
the "thick paper and envelopes" setting. 

On account of this problem (most paper is either too thick, or thin 
enough but swells up) I have definitely had trouble finding matte 
paper that does not require the "thick paper and envelopes" setting 
for the R800.

Has anyone else had any luck?

Thanks!

Matt


--- In QuadtoneRIP@yahoogroups.com, Roy Harrington <roy@...> wrote:
>
> I haven't heard of head scraping on the R800 and people use a lot 
> thicker
> paper than Epson HW Matte.
> It's hard to visualize what you mean by 3/8 inch scrapes but I 
suspect 
> that
> you are getting some banding or roller wheel scrapes.
> In the email you sent me you used 1440 resolution.  The R800 is 
best at
> 2880 dpi and that is what all the K7 profiles are designed for.   
The 
> other issue
> is that the print top and bottom areas are always more prone to 
banding.
> Leaving more white margin is a good idea.
> 
> Roy
> 
> On Sunday, March 11, 2007, at 03:46  PM, David Polcyn wrote:
> 
> > Hi All, I hope someone can help. I just loaded my K-7 inks and
> > installed the rip and Epson R800 profiles and started with Epson
> > Matte/Hwt paper to get set up. The print looks great but there 
are
> > two lines  of 3/8 inch scrapes just about the whole length of the
> > print. It looks like the print head or something else is making
> > contact. I put it back on the Epson print settings and it went
> > through fine. Is like the matte setting is not raising the print 
head
> > enough. Has anyone had a similar problem and is there a fix.
> >
> > Thanks,
> >
> > Dave Polcyn
> >
> >
> -
> Roy Harrington
> roy@...
> Black & White Photo Gallery
> http://www.harrington.com
>