QTR-Quadtone RIP

Hi all

I understand that the piezography profiles are not like the typical QTR profiles - but I am curious if anyone has gone through the process of adapting a generic piezo curve to fit thier printer- paper combination?

Thank you
Sean

Hi Sean,

Yes I have. Wrote a linearization tool in Excel that linearizes piezo
profiles for my paper/printer.

Also experimented with creating QTR style profiles for piezo inks. There are
pluses and minuses to both profile approaches.
Jon's piezo profiles have a lot of overlapping inks and that creates a very
smooth tonality that is very resistant to posterization.
But lots of inks @ dmax rarely gives the best dmax.

Mike

On 8 September 2011 19:22, spsguru <spsguru@...> wrote:

> **
>
>
> Hi all
>
> I understand that the piezography profiles are not like the typical QTR
> profiles - but I am curious if anyone has gone through the process of
> adapting a generic piezo curve to fit thier printer- paper combination?
>
> Thank you
> Sean
>
>  
>


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

Mike

Thank you for letting me know about this.

Do you take the linearization info and bring it into the generic piezo profile in the standard linearization line in the profile text file?

Sean

--- In QuadtoneRIP@yahoogroups.com, Michael King <drmrking@...> wrote:

>
> Hi Sean,
> 
> Yes I have. Wrote a linearization tool in Excel that linearizes piezo
> profiles for my paper/printer.
> 
> Also experimented with creating QTR style profiles for piezo inks. There are
> pluses and minuses to both profile approaches.
> Jon's piezo profiles have a lot of overlapping inks and that creates a very
> smooth tonality that is very resistant to posterization.
> But lots of inks @ dmax rarely gives the best dmax.
> 
> Mike
> 
> On 8 September 2011 19:22, spsguru <spsguru@...> wrote:
> 
> > **
> >
> >
> > Hi all
> >
> > I understand that the piezography profiles are not like the typical QTR
> > profiles - but I am curious if anyone has gone through the process of
> > adapting a generic piezo curve to fit thier printer- paper combination?
> >
> > Thank you
> > Sean
> >
> >  
> >
> 
> 
> [Non-text portions of this message have been removed]
>

>
>
> Do you take the linearization info and bring it into the generic piezo
> profile in the standard linearization line in the profile text file?
>
No, piezo profiles do not have a profile definition (.qidf) file. They are
just .quad files hence you can't edit them with QTR.
Jon creates them from his own profiling tool which spits out a .quad file
directly.

What I do is take Jon's piezo .quad and relinearize it using target
measurements and an excel worksheet I created.

Mike

>
> --- In QuadtoneRIP@yahoogroups.com, Michael King <drmrking@...> wrote:
> >
> > Hi Sean,
> >
> > Yes I have. Wrote a linearization tool in Excel that linearizes piezo
> > profiles for my paper/printer.
> >
> > Also experimented with creating QTR style profiles for piezo inks. There
> are
> > pluses and minuses to both profile approaches.
> > Jon's piezo profiles have a lot of overlapping inks and that creates a
> very
> > smooth tonality that is very resistant to posterization.
> > But lots of inks @ dmax rarely gives the best dmax.
> >
> > Mike
> >
> > On 8 September 2011 19:22, spsguru <spsguru@...> wrote:
> >
> > > **
> > >
> > >
> > > Hi all
> > >
> > > I understand that the piezography profiles are not like the typical QTR
> > > profiles - but I am curious if anyone has gone through the process of
> > > adapting a generic piezo curve to fit thier printer- paper combination?
> > >
> > > Thank you
> > > Sean
> > >
> > >
> > >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
>  
>


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

Sorry Mike but clearly I am missing something here. 

I am unclear as to:

1. What is the output from the excel file - is it just the data?

2. And then do you create a acv file for adjustment in PS or what is the process for creating a new quad file?

thanks!

--- In QuadtoneRIP@yahoogroups.com, Michael King <drmrking@...> wrote:

>
> >
> >
> > Do you take the linearization info and bring it into the generic piezo
> > profile in the standard linearization line in the profile text file?
> >
> No, piezo profiles do not have a profile definition (.qidf) file. They are
> just .quad files hence you can't edit them with QTR.
> Jon creates them from his own profiling tool which spits out a .quad file
> directly.
> 
> What I do is take Jon's piezo .quad and relinearize it using target
> measurements and an excel worksheet I created.
> 
> Mike
> 
> >
> > --- In QuadtoneRIP@yahoogroups.com, Michael King <drmrking@> wrote:
> > >
> > > Hi Sean,
> > >
> > > Yes I have. Wrote a linearization tool in Excel that linearizes piezo
> > > profiles for my paper/printer.
> > >
> > > Also experimented with creating QTR style profiles for piezo inks. There
> > are
> > > pluses and minuses to both profile approaches.
> > > Jon's piezo profiles have a lot of overlapping inks and that creates a
> > very
> > > smooth tonality that is very resistant to posterization.
> > > But lots of inks @ dmax rarely gives the best dmax.
> > >
> > > Mike
> > >
> > > On 8 September 2011 19:22, spsguru <spsguru@> wrote:
> > >
> > > > **
> > > >
> > > >
> > > > Hi all
> > > >
> > > > I understand that the piezography profiles are not like the typical QTR
> > > > profiles - but I am curious if anyone has gone through the process of
> > > > adapting a generic piezo curve to fit thier printer- paper combination?
> > > >
> > > > Thank you
> > > > Sean
> > > >
> > > >
> > > >
> > >
> > >
> > > [Non-text portions of this message have been removed]
> > >
> >
> >  
> >
> 
> 
> [Non-text portions of this message have been removed]
>

excel outputs a new piezo .quad file linearized to my paper/printer.

I take the .quad data into excel apply my target data to linearize it and
write it back into a new .quad file ....

Mike

On 8 September 2011 20:20, spsguru <spsguru@...> wrote:

> **
>
>
> Sorry Mike but clearly I am missing something here.
>
> I am unclear as to:
>
> 1. What is the output from the excel file - is it just the data?
>
> 2. And then do you create a acv file for adjustment in PS or what is the
> process for creating a new quad file?
>
> thanks!
>
>
> --- In QuadtoneRIP@yahoogroups.com, Michael King <drmrking@...> wrote:
> >
> > >
> > >
> > > Do you take the linearization info and bring it into the generic piezo
> > > profile in the standard linearization line in the profile text file?
> > >
> > No, piezo profiles do not have a profile definition (.qidf) file. They
> are
> > just .quad files hence you can't edit them with QTR.
> > Jon creates them from his own profiling tool which spits out a .quad file
> > directly.
> >
> > What I do is take Jon's piezo .quad and relinearize it using target
> > measurements and an excel worksheet I created.
> >
> > Mike
> >
> > >
> > > --- In QuadtoneRIP@yahoogroups.com, Michael King <drmrking@> wrote:
> > > >
> > > > Hi Sean,
> > > >
> > > > Yes I have. Wrote a linearization tool in Excel that linearizes piezo
> > > > profiles for my paper/printer.
> > > >
> > > > Also experimented with creating QTR style profiles for piezo inks.
> There
> > > are
> > > > pluses and minuses to both profile approaches.
> > > > Jon's piezo profiles have a lot of overlapping inks and that creates
> a
> > > very
> > > > smooth tonality that is very resistant to posterization.
> > > > But lots of inks @ dmax rarely gives the best dmax.
> > > >
> > > > Mike
> > > >
> > > > On 8 September 2011 19:22, spsguru <spsguru@> wrote:
> > > >
> > > > > **
> > > > >
> > > > >
> > > > > Hi all
> > > > >
> > > > > I understand that the piezography profiles are not like the typical
> QTR
> > > > > profiles - but I am curious if anyone has gone through the process
> of
> > > > > adapting a generic piezo curve to fit thier printer- paper
> combination?
> > > > >
> > > > > Thank you
> > > > > Sean
> > > > >
> > > > >
> > > > >
> > > >
> > > >
> > > > [Non-text portions of this message have been removed]
> > > >
> > >
> > >
> > >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
>  
>


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