QTR-Quadtone RIP

Hello,having a fair bit of sucess with an epson R800 & QTR.

However many prints have many small horizontal, almost tear like 
errors in the dither pattern, mainly in mid tones.

Have tried a number of settings, and settled on quality : best, 
dither : eventone.

The curve you use doesn't seem to affect the errors.

They are less prevalent in dense area, and non existent in the 
densest.

The one thing I haven't tried is the full range of dpi settings, any 
suggestions ?

I did however note the errors occur less often if you print an image 
at its native dpi setting without scaling in QTR.

The prints that are coming out of QTR are good though, just not 
competition level. And the tone control is excellent.

Any help much appreciated
cheers
Jonathan

--- In QuadtoneRIP@yahoogroups.com, "jondavies34" <jondavies34@y...> wrote:
> Hello,having a fair bit of sucess with an epson R800 & QTR.
> 
> However many prints have many small horizontal, almost tear like 
> errors in the dither pattern, mainly in mid tones.
> 
> Have tried a number of settings, and settled on quality : best, 
> dither : eventone.
> 
> The curve you use doesn't seem to affect the errors.
> 
> They are less prevalent in dense area, and non existent in the 
> densest.
> 
> The one thing I haven't tried is the full range of dpi settings, any 
> suggestions ?
> 
> I did however note the errors occur less often if you print an image 
> at its native dpi setting without scaling in QTR.
> 
> The prints that are coming out of QTR are good though, just not 
> competition level. And the tone control is excellent.
> 
> Any help much appreciated
> cheers
> Jonathan

Hi Jonathan,

I think the many issue with the R800/R1800 is that you are many using
just one ink -- the black.  This makes it much more likely to show banding
due to unevenness in the jets.   I've found the best results by using
the 2880dpi resolution rather than 1440.  The latest version called beta 2.3
works the best for the R800.

Roy

> Hi Jonathan,
> 
> I think the many issue with the R800/R1800 is that you are many
using
> just one ink -- the black.  This makes it much more likely to show
banding
> due to unevenness in the jets.   I've found the best results by
using
> the 2880dpi resolution rather than 1440.  The latest version called
beta 2.3
> works the best for the R800.
> 
> Roy


Will try that but had noticed that the 2.3 produced an output much
more like the tiff file. And also put less ink on the paper for the
same settings strangley.

regards
Jonathan

--- In QuadtoneRIP@yahoogroups.com, "jondavies34" <jondavies34@y...> wrote:
> > Hi Jonathan,
> > 
> > I think the many issue with the R800/R1800 is that you are many
> using
> > just one ink -- the black.  This makes it much more likely to show
> banding
> > due to unevenness in the jets.   I've found the best results by
> using
> > the 2880dpi resolution rather than 1440.  The latest version called
> beta 2.3
> > works the best for the R800.
> > 
> > Roy
> 
> 
> Will try that but had noticed that the 2.3 produced an output much
> more like the tiff file. And also put less ink on the paper for the
> same settings strangley.
> 
> regards
> Jonathan

In 2.2 2880 for the R800 put out lots of ink.  So I cut out the larger
drop size for that res.  So 2880dpi with this version puts out less ink.
It's actually quite close to the ink output at 1440.

Roy