Digital BW, The Print

Hi.
Anyone here have 100% density readings for the K3 grays. Lab _L or
d'log ok.
Thanks.
Duane

> Hi.
> Anyone here have 100% density readings for the K3 grays. Lab _L or
> d'log ok.
> Thanks.
> Duane
>
I'm not sure what you mean by 100% density. On media a such as HPR308, 
K is about L* 17-18 depending on the QTR settings and time spent to do 
the linearization. Ink limit, if my memory serves me well, is about 75% 
at 1440dpi on a 4800, Dmax fast dropping above this. I can re-check ink 
limit if needed.

Olivier

> Hi.
> Anyone here have 100% density readings for the K3 grays. Lab _L or
> d'log ok.
> Thanks.
> Duane
>
I'm not sure what you mean by 100% density. On media a such as HPR308, 
K is about L* 17-18 depending on the QTR settings and time spent to do 
the linearization. Ink limit, if my memory serves me well, is about 75% 
at 1440dpi on a 4800, Dmax fast dropping above this. I can re-check ink 
limit if needed.

Olivier

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Olivier" 
<odesmais@...> wrote:
>
> > Hi.
> > Anyone here have 100% density readings for the K3 grays. Lab _L or
> > d'log ok.
> > Thanks.
> > Duane
> >
> I'm not sure what you mean by 100% density. On media a such as 
HPR308, 
> K is about L* 17-18 depending on the QTR settings and time spent to 
do 
> the linearization. Ink limit, if my memory serves me well, is about 
75% 
> at 1440dpi on a 4800, Dmax fast dropping above this. I can re-check 
ink 
> limit if needed.
> 
> Olivier
>

Any idea what the measurement is for the medium and light black inks 
for the same ink limit? I have a feeling that was more along the 
lines of the above request.

> 
> Any idea what the measurement is for the medium and light black inks 
> for the same ink limit? I have a feeling that was more along the 
> lines of the above request.
>
I'll dig into my files if needed. I have HPR308 and Epson SemiMatte so 
far with K3. I'm currently doing Innova FP Gloss... but it takes time. 

Olivier

Sorry. Not enough thought given to the post on my part. I am looking
for maximum output densities on something like EEM or HPR308. Such as
would be given in the initial printout for QTR in curve making before
any parameters are set. What I wish to do is emulate the inkset for
the 24/78/98 ABW on a 6 ink machine to see if it is feasible or
worthwhile. Your data is usefull. Thank you. I would like the grays as
well if anyone has the info.

Regards
Duane

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Olivier"
<odesmais@...> wrote:

>
> > Hi.
> > Anyone here have 100% density readings for the K3 grays. Lab _L or
> > d'log ok.
> > Thanks.
> > Duane
> >
> I'm not sure what you mean by 100% density. On media a such as HPR308, 
> K is about L* 17-18 depending on the QTR settings and time spent to do 
> the linearization. Ink limit, if my memory serves me well, is about 75% 
> at 1440dpi on a 4800, Dmax fast dropping above this. I can re-check ink 
> limit if needed.
> 
> Olivier
>

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "dlruckus" 
<dlruckus@...> wrote:
>
> Sorry. Not enough thought given to the post on my part. I am looking
> for maximum output densities on something like EEM or HPR308. Such as
> would be given in the initial printout for QTR in curve making before
> any parameters are set. What I wish to do is emulate the inkset for
> the 24/78/98 ABW on a 6 ink machine to see if it is feasible or
> worthwhile. Your data is usefull. Thank you. I would like the grays as
> well if anyone has the info.
> 
> Regards
> Duane
> 
Well, sorry too but I still don't understand (my English is not that 
good). What I can provide for HPR308, 1440Super, uni-d, are L* :
Ink limit : 65%
K   16.8 
LK  36.3
LLK 58.7
All before linearization.
Hope this serves.

Olivier

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Olivier" 
<odesmais@...> wrote:
> good). What I can provide for HPR308, 1440Super, uni-d, are L* :
> Ink limit : 65%
> K   16.8 
> LK  36.3
> LLK 58.7
> All before linearization.
> Hope this serves.
> 
> Olivier
>


Answered my questions. Thanks!

If I was custom mixing a set of 3 black inks, I would probably set 
the light and medium a bit higher, like 65 to 75 for LLK and 50 for 
LK. That would give you better control in the highlights, to fill in 
the mid tones just overlap the LK and K a little bit longer. Yes it 
would give you more ink on the paper with this method, but if you 
aren't dealing with full color this shouldn't be much of an issue. 
But this is just the way I would probably do it.

> 
> If I was custom mixing a set of 3 black inks, I would probably set 
> the light and medium a bit higher, like 65 to 75 for LLK and 50 for 
> LK. That would give you better control in the highlights, to fill in 
> the mid tones just overlap the LK and K a little bit longer. Yes it 
> would give you more ink on the paper with this method, but if you 
> aren't dealing with full color this shouldn't be much of an issue. 
> But this is just the way I would probably do it.
>
I compared this to piezo iQuad : K3 precisely misses a kind of LLLK, 
other partitions are amazingly similar. The issue is the highlight and 
that 0-4% portion, other segments look ok on the paper. I have not 
achieved clean smoothness in the highlights despite all possible 
partitionnings. So when editing the file, I keep this in mind and make 
sure I am far enough from 0 in the file values. QTR-ICC ends the job 
for me. Last HPR is not bright white so it partly hides the deficiency 
of the highlights: not intellectually satisfaying, but practically 
acceptable as long as you print large image. I feel the way it's done 
it not so bad for 3 partitions, besides I've restricted myself to 
1440dpi, it might improve at 2880dpi.

Olivier

Olivier. That will do very well. Thank you. I was apologising for
being unclear in my post. My fault. You are kind to respond with the data.
 Best regards
Duane



--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Olivier"
<odesmais@...> wrote:

>
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "dlruckus" 
> <dlruckus@> wrote:
> >
> > Sorry. Not enough thought given to the post on my part. I am looking
> > for maximum output densities on something like EEM or HPR308. Such as
> > would be given in the initial printout for QTR in curve making before
> > any parameters are set. What I wish to do is emulate the inkset for
> > the 24/78/98 ABW on a 6 ink machine to see if it is feasible or
> > worthwhile. Your data is usefull. Thank you. I would like the grays as
> > well if anyone has the info.
> > 
> > Regards
> > Duane
> > 
> Well, sorry too but I still don't understand (my English is not that 
> good). What I can provide for HPR308, 1440Super, uni-d, are L* :
> Ink limit : 65%
> K   16.8 
> LK  36.3
> LLK 58.7
> All before linearization.
> Hope this serves.
> 
> Olivier
>

Yes. That would probably be a good idea in my case. An older machine
would definitely benefit from the lighter highlights.
Thanks for the thoughts.

Regards
Duane


--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Greg"
<dfaprinting@...> wrote:

> 
> If I was custom mixing a set of 3 black inks, I would probably set 
> the light and medium a bit higher, like 65 to 75 for LLK and 50 for 
> LK. That would give you better control in the highlights, to fill in 
> the mid tones just overlap the LK and K a little bit longer. Yes it 
> would give you more ink on the paper with this method, but if you 
> aren't dealing with full color this shouldn't be much of an issue. 
> But this is just the way I would probably do it.
>