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BO prints w/ebony streaking

BO prints w/ebony streaking

2004-04-23 by neilsphoto

I just made a print minutes ago, tweaked it a bit and had just what was just 
described in a previous post.   It looks like a bad spray paint job.  Uneven 
spraying of ink.  The first print didn't have that look but the next did.  Weird.

This was a 6x9 image and it has alot of dark areas.  The paper was EEM and 
the ink Ebony.   FWIW I've had a similar look on large A3 prints.  In that case a 
6a9 was fine but the A3 prints had the streaking.

I've found no answer yet and I haven't found a pattern.   I need to see if it 
happens on Photo Rag too.

Neil

Re: BO prints w/ebony streaking

2004-04-23 by wifflebomb

Definitely let me know if you find a solution.  For me it happens in 
the darkest areas too.  My prints have a lot of dark tones (see 
www.brashares.com if you're interested) and in other kinds of prints, 
with no solid blacks, it would be hard to see it-- I wonder if the 
problem is common but others don't notice...


--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "neilsphoto" 
<neilsphoto@y...> wrote:
> I just made a print minutes ago, tweaked it a bit and had just what 
was just 
> described in a previous post.   It looks like a bad spray paint 
job.  Uneven 
> spraying of ink.  The first print didn't have that look but the 
next did.  Weird.
> 
> This was a 6x9 image and it has alot of dark areas.  The paper was 
EEM and 
> the ink Ebony.   FWIW I've had a similar look on large A3 prints.  
In that case a 
> 6a9 was fine but the A3 prints had the streaking.
> 
> I've found no answer yet and I haven't found a pattern.   I need to 
see if it 
Show quoted textHide quoted text
> happens on Photo Rag too.
> 
> Neil

Re: [Digital BW] Re: BO prints w/ebony streaking

2004-04-23 by Steve Kale

I am not sure the problem is BO per se.  When I do test prints on EEM (with
QTR or BO) I find that solid black areas, eg sky, get corrugations in
density about an inch or so apart. Not banding just undulations in darkness.
I suspect it is more something to do with a lot of ink hitting a thin paper
and the way it dries.  I have no such problems with HPR.
Show quoted textHide quoted text
From: "wifflebomb" <wifflebomb@...>
Reply-To: DigitalBlackandWhiteThePrint@yahoogroups.com
Date: Fri, 23 Apr 2004 01:44:29 -0000
To: DigitalBlackandWhiteThePrint@yahoogroups.com
Subject: [Digital BW] Re: BO prints w/ebony streaking

Definitely let me know if you find a solution.  For me it happens in
the darkest areas too.  My prints have a lot of dark tones (see
www.brashares.com if you're interested) and in other kinds of prints,
with no solid blacks, it would be hard to see it-- I wonder if the
problem is common but others don't notice...


--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "neilsphoto"
<neilsphoto@y...> wrote:
> I just made a print minutes ago, tweaked it a bit and had just what
was just 
> described in a previous post.   It looks like a bad spray paint
job.  Uneven 
> spraying of ink.  The first print didn't have that look but the
next did.  Weird.
> 
> This was a 6x9 image and it has alot of dark areas.  The paper was
EEM and 
> the ink Ebony.   FWIW I've had a similar look on large A3 prints.
In that case a 
> 6a9 was fine but the A3 prints had the streaking.
> 
> I've found no answer yet and I haven't found a pattern.   I need to
see if it 
> happens on Photo Rag too.
> 
> Neil



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[Digital BW] Re: BO prints w/ebony streaking

2004-04-23 by wifflebomb

Steve, sounds like we are definitely talking about the same 
phenomenon.  Interesting that you get it on EEM but not PR; I always 
get it on PR and never on EEM.  I wonder if there are workarounds -- 
different settings, profiles, etc. that might help.  I'm open to any 
ideas.


--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Steve Kale 
<stevekale@b...> wrote:
> I am not sure the problem is BO per se.  When I do test prints on 
EEM (with
> QTR or BO) I find that solid black areas, eg sky, get corrugations 
in
> density about an inch or so apart. Not banding just undulations in 
darkness.
> I suspect it is more something to do with a lot of ink hitting a 
thin paper
> and the way it dries.  I have no such problems with HPR.
> 
> 
> From: "wifflebomb" <wifflebomb@y...>
> Reply-To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Date: Fri, 23 Apr 2004 01:44:29 -0000
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: [Digital BW] Re: BO prints w/ebony streaking
> 
> Definitely let me know if you find a solution.  For me it happens in
> the darkest areas too.  My prints have a lot of dark tones (see
> www.brashares.com if you're interested) and in other kinds of 
prints,
> with no solid blacks, it would be hard to see it-- I wonder if the
> problem is common but others don't notice...
> 
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "neilsphoto"
> <neilsphoto@y...> wrote:
> > I just made a print minutes ago, tweaked it a bit and had just 
what
> was just 
> > described in a previous post.   It looks like a bad spray paint
> job.  Uneven 
> > spraying of ink.  The first print didn't have that look but the
> next did.  Weird.
> > 
> > This was a 6x9 image and it has alot of dark areas.  The paper was
> EEM and 
> > the ink Ebony.   FWIW I've had a similar look on large A3 prints.
> In that case a 
> > 6a9 was fine but the A3 prints had the streaking.
> > 
> > I've found no answer yet and I haven't found a pattern.   I need 
to
> see if it 
> > happens on Photo Rag too.
> > 
> > Neil
> 
> 
> 
> Please visit the Group Homepage to check the Files, and other 
resources as
> they are often being updated.
> 
> http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint
> 
> If you wish to receive no emails or just a daily digest, or you 
wish to
> unsubscribe, please edit your Membership preferences by visiting 
this same
> page.
> 
> Please follow these basic guidelines:
> - As threads develop, trim off excess portions of earlier messages 
to keep
> them short.
> - Good manners are required at all time. No personal attacks or 
flames.
> Hostile, aggressive or argumentative users may be removed from the
> membership without notice.
> - Keep your posts and threads related to the group topic of digital 
B&W
> printing. Users who persistently make off-topic posts may be 
removed from
> the membership.
> - By posting on this forum you agree to abide by the group rules and
> guidelines, and to abide by the actions and decisions of the group 
Owner and
> Moderators. See "Group Topic, Rules and Guidelines" in the Files 
section:
> http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint/files/
> 
> BY PARTICIPATING IN AND/OR POSTING MESSAGES TO THE DIGITAL BW, THE 
PRINT
> YAHOO! GROUP YOU EXPRESSLY UNDERSTAND AND AGREE THAT THE "OWNER" AND
> "MODERATORS" OF DIGITAL BW, THE PRINT YAHOO GROUP SHALL NOT BE 
LIABLE TO YOU
> FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL OR 
EXEMPLARY
> DAMAGES, INCLUDING BUT NOT LIMITED TO, DAMAGES FOR LOSS OF PROFITS,
> GOODWILL, USE, DATA OR OTHER INTANGIBLE LOSSES (EVEN IF 
THE  "OWNER" AND
> "MODERATORS" OF DIGITAL BW, THE PRINT YAHOO GROUP HAVE BEEN ADVISED 
OF THE
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INABILITY
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> ALTERATION OF YOUR TRANSMISSIONS OR DATA; (iii) STATEMENTS OR 
CONDUCT OF ANY
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[Digital BW] Re: BO prints w/ebony streaking

2004-04-23 by durhamtog

I, too, had similar problems.  Don't know if it's the exact same 
thing, but it helped me to 1) align my printheads AND 2) use a paper 
profile rather than "same as source" in the print with preview page.

Here's my data:

With my brand new 2200, I thought I was following Clayton Jones' 
instructions and my BO printing initially looked very good (with mK 
on EEM).  However, I had accidentally deviated from his settings by 
selecting the Epson EEM profile in the "Print with Preview" page.  
When I reread Clayton's webpage and changed my selection to "Same as 
source" as he suggests, I noticed ugly banding/density variation in 
dark areas.  I thought perhaps my printheads were misaligned, so I 
checked, and they were, so I aligned them.  I tried again to make the 
prints (same as source) and they looked better, but the banding was 
still there.  I then switched back to the Epson EEM profile and the 
banding was totally gone.  These aligned, EEM-profiled prints looked 
much better than the "same as source" prints and subtly better than 
the pre-aligned EEM-profiled prints.  I went back and looked at the 
original (pre-alignment) EEM-profiled prints with a loupe and could 
see banding that wasn't there to the naked eye.  (The post-alignment 
EEM-profiled prints don't even have banding through a loupe.)

I don't understand why using the profile would get rid of the 
banding, but 
it seemed to.

It might be worth a try.

-Aaron

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Steve Kale 
<stevekale@b...> wrote:
> I am not sure the problem is BO per se.  When I do test prints on 
EEM (with
> QTR or BO) I find that solid black areas, eg sky, get corrugations 
in
> density about an inch or so apart. Not banding just undulations in 
darkness.
> I suspect it is more something to do with a lot of ink hitting a 
thin paper
> and the way it dries.  I have no such problems with HPR.
> 
> 
> From: "wifflebomb" <wifflebomb@y...>
> Reply-To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Date: Fri, 23 Apr 2004 01:44:29 -0000
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: [Digital BW] Re: BO prints w/ebony streaking
> 
> Definitely let me know if you find a solution.  For me it happens in
> the darkest areas too.  My prints have a lot of dark tones (see
> www.brashares.com if you're interested) and in other kinds of 
prints,
> with no solid blacks, it would be hard to see it-- I wonder if the
> problem is common but others don't notice...
> 
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "neilsphoto"
> <neilsphoto@y...> wrote:
> > I just made a print minutes ago, tweaked it a bit and had just 
what
> was just 
> > described in a previous post.   It looks like a bad spray paint
> job.  Uneven 
> > spraying of ink.  The first print didn't have that look but the
> next did.  Weird.
> > 
> > This was a 6x9 image and it has alot of dark areas.  The paper was
> EEM and 
> > the ink Ebony.   FWIW I've had a similar look on large A3 prints.
> In that case a 
> > 6a9 was fine but the A3 prints had the streaking.
> > 
> > I've found no answer yet and I haven't found a pattern.   I need 
to
Show quoted textHide quoted text
> see if it 
> > happens on Photo Rag too.
> > 
> > Neil

Re: BO prints w/ebony streaking

2004-04-23 by edrudolpho

hi.... i've also had this problem on photorag.  the bands of 
different black density were about 1/4 to 3/8" apart in near solid 
black areas, on a 2200.

ed rudolph


--- In DigitalBlackandWhiteThePrint@yahoogroups.com, 
"wifflebomb" <wifflebomb@y...> wrote:
> Steve, sounds like we are definitely talking about the same 
> phenomenon.  Interesting that you get it on EEM but not PR; I 
always 
> get it on PR and never on EEM.  I wonder if there are 
workarounds -- 
> different settings, profiles, etc. that might help.  I'm open to any 
> ideas.
> 
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, Steve 
Kale 
> <stevekale@b...> wrote:
> > I am not sure the problem is BO per se.  When I do test prints 
on 
> EEM (with
> > QTR or BO) I find that solid black areas, eg sky, get 
corrugations 
> in
> > density about an inch or so apart. Not banding just 
undulations in 
> darkness.
> > I suspect it is more something to do with a lot of ink hitting a 
> thin paper
> > and the way it dries.  I have no such problems with HPR.
> > 
> > 
> > From: "wifflebomb" <wifflebomb@y...>
> > Reply-To: DigitalBlackandWhiteThePrint@yahoogroups.com
> > Date: Fri, 23 Apr 2004 01:44:29 -0000
> > To: DigitalBlackandWhiteThePrint@yahoogroups.com
> > Subject: [Digital BW] Re: BO prints w/ebony streaking
> > 
> > Definitely let me know if you find a solution.  For me it 
happens in
> > the darkest areas too.  My prints have a lot of dark tones (see
> > www.brashares.com if you're interested) and in other kinds 
of 
> prints,
> > with no solid blacks, it would be hard to see it-- I wonder if 
the
> > problem is common but others don't notice...
> > 
> > 
> > --- In DigitalBlackandWhiteThePrint@yahoogroups.com, 
"neilsphoto"
> > <neilsphoto@y...> wrote:
> > > I just made a print minutes ago, tweaked it a bit and had 
just 
> what
> > was just 
> > > described in a previous post.   It looks like a bad spray 
paint
> > job.  Uneven 
> > > spraying of ink.  The first print didn't have that look but the
> > next did.  Weird.
> > > 
> > > This was a 6x9 image and it has alot of dark areas.  The 
paper was
> > EEM and 
> > > the ink Ebony.   FWIW I've had a similar look on large A3 
prints.
> > In that case a 
> > > 6a9 was fine but the A3 prints had the streaking.
> > > 
> > > I've found no answer yet and I haven't found a pattern.   I 
need 
> to
> > see if it 
> > > happens on Photo Rag too.
> > > 
> > > Neil
> > 
> > 
> > 
> > Please visit the Group Homepage to check the Files, and 
other 
> resources as
> > they are often being updated.
> > 
> > http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint
> > 
> > If you wish to receive no emails or just a daily digest, or you 
> wish to
> > unsubscribe, please edit your Membership preferences by 
visiting 
> this same
> > page.
> > 
> > Please follow these basic guidelines:
> > - As threads develop, trim off excess portions of earlier 
messages 
> to keep
> > them short.
> > - Good manners are required at all time. No personal attacks 
or 
> flames.
> > Hostile, aggressive or argumentative users may be removed 
from the
> > membership without notice.
> > - Keep your posts and threads related to the group topic of 
digital 
> B&W
> > printing. Users who persistently make off-topic posts may be 
> removed from
> > the membership.
> > - By posting on this forum you agree to abide by the group 
rules and
> > guidelines, and to abide by the actions and decisions of the 
group 
> Owner and
> > Moderators. See "Group Topic, Rules and Guidelines" in the 
Files 
> section:
> > 
http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint/file
s/
> > 
> > BY PARTICIPATING IN AND/OR POSTING MESSAGES TO 
THE DIGITAL BW, THE 
> PRINT
> > YAHOO! GROUP YOU EXPRESSLY UNDERSTAND AND 
AGREE THAT THE "OWNER" AND
> > "MODERATORS" OF DIGITAL BW, THE PRINT YAHOO 
GROUP SHALL NOT BE 
> LIABLE TO YOU
> > FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
CONSEQUENTIAL OR 
> EXEMPLARY
> > DAMAGES, INCLUDING BUT NOT LIMITED TO, DAMAGES 
FOR LOSS OF PROFITS,
> > GOODWILL, USE, DATA OR OTHER INTANGIBLE LOSSES 
(EVEN IF 
> THE  "OWNER" AND
> > "MODERATORS" OF DIGITAL BW, THE PRINT YAHOO 
GROUP HAVE BEEN ADVISED 
> OF THE
> > POSSIBILITY OF SUCH DAMAGES), RESULTING FROM: (i) 
THE USE OR THE 
> INABILITY
> > TO USE THE DIGITAL BW, THE PRINT YAHOO GROUP; (ii) 
UNAUTHORIZED 
> ACCESS TO OR
> > ALTERATION OF YOUR TRANSMISSIONS OR DATA; (iii) 
STATEMENTS OR 
> CONDUCT OF ANY
> > THIRD PARTY ON THE DIGITAL BW, THE PRINT YAHOO 
GROUP; OR (iv) ANY 
> OTHER
> > MATTER RELATING TO THE DIGITAL BW, THE PRINT 
YAHOO GROUP.
> > 
> > 
> > 
> > 
> > Yahoo! Groups Links
> > * To visit your group on the web, go to:
> > * 
http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint/
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DigitalBlackandWhiteThePrint-unsubscribe@yahoogroups.com
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of 
Show quoted textHide quoted text
> Service
> > <http://docs.yahoo.com/info/terms/> .
> > 
> > 
> > 
> > 
> > [Non-text portions of this message have been removed]

[Digital BW] Re: BO prints w/ebony streaking

2004-04-23 by John Vitollo

"durhamtog"  wrote:
 
> I don't understand why using the profile would get rid of the 
> banding, but 
> it seemed to.

If not a head alignment problem or clogged head, streaking is usually  a sign of ink 
starvation at the head. Adding the profile might just give more ink to paper.

[Digital BW] Re: BO prints w/ebony streaking

2004-04-24 by wifflebomb

I agree it is some kind of "ink starvation" and that the driver needs 
to be telling the heads to spray more ink on the darkest tones 
somehow.

This leads me to another question:  what good are paper profiles when 
you are doing Black Only?  Don't all canned profiles calculate the 
amount of ink being sprayed on the assumption that all 7 inks are 
available and mostly spraying along with the black?  Has anyone 
made "Black Only" paper profiles, i.e. profiled on the premise that 
only one head is spraying with black ink?


--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "John Vitollo" 
<jvlist@c...> wrote:
>  "durhamtog"  wrote:
>  
> > I don't understand why using the profile would get rid of the 
> > banding, but 
> > it seemed to.
> 
> If not a head alignment problem or clogged head, streaking is 
usually  a sign of ink 
> starvation at the head. Adding the profile might just give more ink 
to paper.

Re: [Digital BW] Re: BO prints w/ebony streaking

2004-04-24 by Ernst Dinkla

wifflebomb wrote:

> I agree it is some kind of "ink starvation" and that the driver needs 
> to be telling the heads to spray more ink on the darkest tones 
> somehow.
> 
> This leads me to another question:  what good are paper profiles when 
> you are doing Black Only?  Don't all canned profiles calculate the 
> amount of ink being sprayed on the assumption that all 7 inks are 
> available and mostly spraying along with the black?  Has anyone 
> made "Black Only" paper profiles, i.e. profiled on the premise that 
> only one head is spraying with black ink?

Black Only paper profiles would ask for another profile creation. 
One way would be a "none" profile that gets PS curves implanted 
for linearising the density. However I doubt BO printing uses 
profiles at all in the Epson driver. The internal paper settings 
data will be used but can't be changed. So PS curves are the only 
option I guess other than using non-Epson drivers.

Though I'm not using BO printing at this moment I've raised the 
question before whether BO printing could become better if the 
black wasn't just squirted from one head but say 2, 3 or 4 heads. 
That means dedicated cart(s) and a driver that can reduce the ink 
amount per head by the number of nozzles extra used. It is not 
that I believe that it is impossible to do it with one head but I 
very much think that consistency in the print and in time could 
improve a lot. The C84 (all the nozzles available) or the R800 
for the desktop given their small droplet size. The 4000 would be 
the easiest if both black heads can be used simultaneously, 
that's 360 nozzles together. The smallest droplet sizes possible 
in a given printer will be used when the heads are limited in 
throughput. That's 1.5 picoliter for the R800 and 3.5 picoliter 
for the 4000, the C84 falls in the last category if my memory is 
correct, Depending on the limitation and the range of droplet 
sizes available the next one above the smallest size may appear 
as well in the shadows. This most likely will require the use of 
QTR and possibly a bit more hacking in the Gimp-print origins to 
get the best of all possibilities.

Ernst

[Digital BW] Re: BO prints w/ebony streaking

2004-04-24 by Clayton Jones

Hello Wiffle,

>I agree it is some kind of "ink starvation" and that the driver
>needs to be telling the heads to spray more ink on the darkest 
>tones somehow.

It might be a bad cart, try another and see if it goes away (it
happened to me once).  


>This leads me to another question:  what good are paper profiles
>when you are doing Black Only?  

Not much if you're talking about pre-written profiles of some sort.  
Any pre-written profile is created with a particular system and is
good only for that system.


>Has anyone made "Black Only" paper profiles

Yes, sort of.  Paper profiles are necessary because papers are
different, but, assuming some sort of standard, some papers are more
different than others.  In my articles on BO printing I recommend
using EEM as a standard proofing paper.  It looks great, has excellent
Dmax, contrast, etc.  It's cheap, readily available in stores, and is
widely used. It's the closest thing to a standard that exists.  Great
stuff, only it's not cotton and turns yellow, so we need something
else for final prints.

In the articles I recommend using Photo Rag (PR) because it has the
same density and contrast as EEM, and produces nearly identical prints
 (it also happens to have the best Dmax of any cotton paper and is
gorgeous stuff, so we get the best of both worlds and it's easy). 
It's probably the most popular cotton paper (also very expensive).  

Because PR is brighter than EEM, some prints look a bit weak and
require a slight darkening curve, usually no more than 2 or 3 RGB
units in the center.  This curve could be called a "PR profile", but
the problem is it can't be applied to every image.  Some need less,
some none at all.

I think this is because in BO prints the paper surface is a more
active part of the image than with full-ink systems (this is what
gives BO prints the luminance that so many people like).  Higher key
prints tend to need more adjustment because more of the brighter
surface is showing and it has a greater effect.

Lately I've been trying other cotton papers and have found a few that
give results comparable to PR (none have quite as much Dmax but they
are good).  However, some are similar to EEM and some are different
enough to need an adjustment curve to match the proof.  Some need a
simple darkening curve like PR, but some need an actual contrast
adjustment.

As I experiment further I'm discovering that, like with PR, not every
image needs the same curve.  So I can't create and save a curve for an
image on Premier Hot Press, for example, and expect it to work for
every image on that paper.

The approach I'm taking now is to put a final curve layer in an image
file and leave it there (or a temporary layer can be applied each
time).  The layer can be switched off when printing on EEM.  I also
keep notes on each image and I write down the plot points for the
curve used for a particular paper (these are usually simple curves
with 1 to 3 points).  If I also print the image on another paper I
write down those curve points.  Next time I want to print on a given
paper the plot points can easily be entered into the curve.

Regards,
Clayton


Info on black and white digital printing at    
http://www.cjcom.net/digiprnarts.htm

Re: [Digital BW] Re: BO prints w/ebony streaking

2004-04-24 by Steve Kale

John

I wouldn¹t call it streaking.  Imagine if you were able to feed a corrugated
piece of paper (wide corrugations of about an inch) into the printer and to
a certain extent the ink ran into the hollows.  It¹s lighter on the ridges
and deepens into the hollows.  I put it down to EEM just being thin cheap
paper but maybe I am wrong.

Steve
Show quoted textHide quoted text
From: "John Vitollo" <jvlist@...>
Reply-To: DigitalBlackandWhiteThePrint@yahoogroups.com
Date: Fri, 23 Apr 2004 18:57:01 -0000
To: DigitalBlackandWhiteThePrint@yahoogroups.com
Subject: [Digital BW] Re: BO prints w/ebony streaking

 "durhamtog"  wrote:
 
> I don't understand why using the profile would get rid of the
> banding, but 
> it seemed to.

If not a head alignment problem or clogged head, streaking is usually  a
sign of ink 
starvation at the head. Adding the profile might just give more ink to
paper.



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

[Digital BW] Re: BO prints w/ebony streaking

2004-04-24 by Clayton Jones

Hello Steve,

>I wouldn't call it streaking.  Imagine if you were able to feed a
>corrugated piece of paper (wide corrugations of about an inch) 
>into the printer and to a certain extent the ink ran into the 
>hollows.  It's lighter on the ridges and deepens into the
>hollows.  I put it down to EEM just being thin cheap paper but 
>maybe I am wrong.

I wouldn't blame it on EEM.  I saw this problem recently when I
printed a sample image Sony 828 downloaded from dpreview.  I thought
something was wrong with the printer but it wasn't there on other
images.  So I assume it was something in that image.  Is this problem
on every image?


Regards,
Clayton


Info on black and white digital printing at    
http://www.cjcom.net/digiprnarts.htm

Re: [Digital BW] Re: BO prints w/ebony streaking

2004-04-24 by D. Hill

I had this same problem with my 860 about 1.5 years
back.  Unfortunately it would not or could not be
fixed.  I never did figure out why it happened - but
it appeared (near the very end of its life) while
using the MIS FS inks, and never occured while using
BO.  

When I installed color inks the odd banding
disappeared, so it's a color machine now and belongs
to someone else.

don


--- Steve Kale <stevekale@...> wrote:
> John
> 
> I wouldn\ufffdt call it streaking.  Imagine if you were
> able to feed a corrugated
> piece of paper (wide corrugations of about an inch)
> into the printer and to
> a certain extent the ink ran into the hollows.  It\ufffds
> lighter on the ridges
> and deepens into the hollows.  I put it down to EEM
> just being thin cheap
> paper but maybe I am wrong.
> 
> Steve



	
		
__________________________________
Do you Yahoo!?
Yahoo! Photos: High-quality 4x6 digital prints for 25\ufffd
http://photos.yahoo.com/ph/print_splash

[Digital BW] Re: BO prints w/ebony streaking

2004-04-24 by John Vitollo

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "John Vitollo" <jvlist@c...> wrote:
>  "durhamtog"  wrote:
>  
> > I don't understand why using the profile would get rid of the 
> > banding, but 
> > it seemed to.
> 
> If not a head alignment problem or clogged head, streaking is usually  a sign of ink 
> starvation at the head. Adding the profile might just give more ink to paper.

Also I would change the Media Settings to a different paper to see the banding would go 
away.

Re: [Digital BW] Re: BO prints w/ebony streaking

2004-04-24 by Steve Kale

Hi Clayton

I haven¹t tested this recently but I dismissed the image angle because the
effect that I saw on EEM did not appear on HPR.  It only appears in deep
black areas eg skies or black backgrounds, so somehow likely a factor of ink
load vs paper weight.  As I recall, it is the way the paper dried rather
than the way the image first came out of the printer.

Cheers

Steve
Show quoted textHide quoted text
From: "Clayton Jones" <cj@...>
Reply-To: DigitalBlackandWhiteThePrint@yahoogroups.com
Date: Sat, 24 Apr 2004 13:17:30 -0000
To: DigitalBlackandWhiteThePrint@yahoogroups.com
Subject: [Digital BW] Re: BO prints w/ebony streaking

Hello Steve,

>I wouldn't call it streaking.  Imagine if you were able to feed a
>corrugated piece of paper (wide corrugations of about an inch)
>into the printer and to a certain extent the ink ran into the
>hollows.  It's lighter on the ridges and deepens into the
>hollows.  I put it down to EEM just being thin cheap paper but
>maybe I am wrong.

I wouldn't blame it on EEM.  I saw this problem recently when I
printed a sample image Sony 828 downloaded from dpreview.  I thought
something was wrong with the printer but it wasn't there on other
images.  So I assume it was something in that image.  Is this problem
on every image?


Regards,
Clayton


Info on black and white digital printing at
http://www.cjcom.net/digiprnarts.htm



Please visit the Group Homepage to check the Files, and other resources as
they are often being updated.

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

If you wish to receive no emails or just a daily digest, or you wish to
unsubscribe, please edit your Membership preferences by visiting this same
page.

Please follow these basic guidelines:
- As threads develop, trim off excess portions of earlier messages to keep
them short.
- Good manners are required at all time. No personal attacks or flames.
Hostile, aggressive or argumentative users may be removed from the
membership without notice.
- Keep your posts and threads related to the group topic of digital B&W
printing. Users who persistently make off-topic posts may be removed from
the membership.
- By posting on this forum you agree to abide by the group rules and
guidelines, and to abide by the actions and decisions of the group Owner and
Moderators. See “Group Topic, Rules and Guidelines” in the Files section:
http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint/files/

BY PARTICIPATING IN AND/OR POSTING MESSAGES TO THE DIGITAL BW, THE PRINT
YAHOO! GROUP YOU EXPRESSLY UNDERSTAND AND AGREE THAT THE “OWNER” AND
“MODERATORS” OF DIGITAL BW, THE PRINT YAHOO GROUP SHALL NOT BE LIABLE TO YOU
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL OR EXEMPLARY
DAMAGES, INCLUDING BUT NOT LIMITED TO, DAMAGES FOR LOSS OF PROFITS,
GOODWILL, USE, DATA OR OTHER INTANGIBLE LOSSES (EVEN IF THE  “OWNER” AND
“MODERATORS” OF DIGITAL BW, THE PRINT YAHOO GROUP HAVE BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES), RESULTING FROM: (i) THE USE OR THE INABILITY
TO USE THE DIGITAL BW, THE PRINT YAHOO GROUP; (ii) UNAUTHORIZED ACCESS TO OR
ALTERATION OF YOUR TRANSMISSIONS OR DATA; (iii) STATEMENTS OR CONDUCT OF ANY
THIRD PARTY ON THE DIGITAL BW, THE PRINT YAHOO GROUP; OR (iv) ANY OTHER
MATTER RELATING TO THE DIGITAL BW, THE PRINT YAHOO GROUP.




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