Digital BW, The Print

I also have a banding problem in the deepest blacks with OPM.  
My 2200 does not show banding in the same file using the 
Epson driver.   I will test it on the IP RIP soon.   The banding is 
subtle (unlike Piezo banding)  and not apparent throughout the 
black areas of the print.  It almost looks like a scuffed print 
surface until I look through a loup and see the dotted lines.  It is 
like the trail of a pizza wheel, but in the wrong direction.

I really like the OPM.  Antonis did a great job on the Warm and 
Cool profiles.  That combined with the blend option makes for a 
very easy to use program that has the potential for quality results.  
I really hope someone has an answer for this banding issue.

Frank
http://www.photoeye.com/frankward
http://www.culturalvisions.com

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, 
"grdglass" <grdglass@a...> wrote:
> Antonis and Robert,
> 
> Thanks for your suggestions.  I have run a couple of cleaning 
cycles 
> and performed an alignment on my 2200.  Neither worked.  I 
also 
> worked up a new test file, just in case the file I had been using 
was 
> corrupted.  No luck.
> 
> So, I am stuck for awhile, because I am running OPM off an 
iBook that 
> I do not use for image editing.  I use a PC for images and will 
have 
> to wait for IJC for Windows before I can check out my 2200.  I 
have 
> no need to buy both platform versions.
> 
> Antonis, since I see the banding in only the 100% patch with 
OPM, 
> does that mean the problem definitely lies in the black jet?  
Would 
> your black single-jet profile for troubleshooting tell me anything 
> definitive?
> 
> Helene 
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, 
"Antonis Ricos" 
> <antonisphoto@y...> wrote:
> > Helene,
> > 
> > thanks for the kind words!....  
> > 
> > Adding to what Robert and Carl have already said: banding of 
this 
> sort is not 
> > likely to be profile related or even software related (dither etc). 
> Possibly the 
> > black head is doing something that is exaggerated by the 
profile, 
> but not 
> > caused by it. 
> > 
> > If you were able to open the profile in IJC, you would see that 
at 
> 100% there 
> > is very little gray running and nothing else (with the WARM 
> profile). With other 
> > profiles/workflows it's possible that all jets are firing to some 
> extend and that 
> > would hide whatever the black head is doing. 
> > 
> > Eventually I may upload single-jet profiles for troubleshooting 
> purposes, but, 
> > of course, if you have IJC you can just choose to 
automatically 
> print each of 
> > the active inks in a chosen profile separately as an individual 
> grayscale. You 
> > can then isolate the problem better. For example in the case 
of a 
> 2200 WARM 
> > profile, you would automatically get two grayscales printed - 
the 
> gray ink first, 
> > and below it the black ink - and you can then see if one head 
is 
> banding and 
> > the other not.
> > 
> > I use this all the time to check my printers before making 
prints. 
> The nozzle 
> > checks don't tell the whole story. They could show clean,  but 
a 
> certain head 
> > may band. Runnning head cleanings sometimes solves the 
banding, 
> even 
> > though nozzle checks continue to look clean. The easiest 
way to 
> check 
> > afterwards is to run the IJC separate-ink scales again. 
Besides 
> banding, they 
> > also show where an ink starts and ends and how it behaves 
across 
> the scale. 
> > They serve to verify what the profile is doing. 
> > 
> > Regarding your question about the shipping profiles: IJC / 
OPM are 
> not 
> > meant to encourage the use of canned profiles. They ship 
with some 
> as 
> > examples and some just because those of us doing beta 
tests made 
> them . But 
> > the idea is you can make your own - probably just by 
tweaking the 
> shipping 
> > ones. Eventually we will be exchanging profiles (by uploading 
to 
> the files 
> > section of this list), so a larger variety will be available. Even 
> so, the 
> > maximum benefit of IJC comes from enabling you to fine 
tune a 
> profile to your 
> > particular printing setup.
> > 
> > The supported printers are the same as the free OPM 
download. It is 
> free not 
> > because it is a "limited" demo, but because it is based on 
Open 
> Source code 
> > - like gimp print - and what you see is what you get (i.e. the 
free 
> download is 
> > the complete, full functioning version) and its code is in the 
> public domain. 
> > The "catch" if you will, is that without IJC (the for-pay part), 
> you are limited to 
> > canned profiles and their limitations.
> > 
> > 
> > Antonis
> > 
> > 
> > Antonis
> > 
> > 
> > 
> > 
> > --- In DigitalBlackandWhiteThePrint@yahoogroups.com, 
"grdglass" 
> > <grdglass@a...> wrote:
> > 
> > > To eliminate my 2200 as the cause of the problem, I did a 
nozzle 
> > > check and printed my test image and step wedges through 
two other 
> > > printing applications.  These were all perfect and didn't 
exhibit 
> > > either of the OPM problems.
> > > 
> > > Any ideas what is happening? 
> > 
> >  
> > > A few other questions.  IJC, as purchased, will have a full 
array 
> of 
> > > profiles, correct?  And, do you know which printers will be 
> covered 
> > > besides those currently in the free OPM download?
> > > 
> > > Helene