Digital BW, The Print

I have used the spectrocolorimeter datacolor #1005 of my PrintFixPro
package for 2 years, profiling about 40 different papers for color and
grayscale with good results. But, just in the last days, measurements
of dark patches seem quite strange on the color coordinates in Lab
values. For example, here 5 Lab measurements of the step 96 in a 51
steps grayscale, waiting about 5-10 second between them:
1) 7,99 | -2,91 | 1,26
2) 8,25 | -1,29 | -0,9
3) 8,11 | -0,85 | -1,1
4) 8,29 | -0,22 | -2,13
5) 8,00 | -1,47 | 1,28

B value range from 1,28 to -2,13 and I can notice an evident loss of
contiguity, for a and b values for dark patches, comparing same paper
profiles created in the last days and one month ago.
I have repeated the same tests with different sw upgrades, from
PrintFix 1.0 to Spyder3Print, on different computers and different usb
ports, but nothing to do.
Have you any suggestions?

On Feb 11, 2009, at 5:15 AM, nadar1900 wrote:

> I have used the spectrocolorimeter datacolor #1005 of my PrintFixPro
> package for 2 years, profiling about 40 different papers for color and
> grayscale with good results. But, just in the last days, measurements
> of dark patches seem quite strange on the color coordinates in Lab
> values. For example, here 5 Lab measurements of the step 96 in a 51
> steps grayscale, waiting about 5-10 second between them:
> 1) 7,99 | -2,91 | 1,26
> 2) 8,25 | -1,29 | -0,9
> 3) 8,11 | -0,85 | -1,1
> 4) 8,29 | -0,22 | -2,13
> 5) 8,00 | -1,47 | 1,28
>
> B value range from 1,28 to -2,13 and I can notice an evident loss of
> contiguity, for a and b values for dark patches, comparing same paper
> profiles created in the last days and one month ago.
> I have repeated the same tests with different sw upgrades, from
> PrintFix 1.0 to Spyder3Print, on different computers and different usb
> ports, but nothing to do.
> Have you any suggestions?

Since this appears to be a hardware based issue, if the variance is  
beyond what your usage allows for, you will have to purchase another  
unit, since your current one is beyond warranty. Sorry!

C. David Tobie
Global Product Technology Manager
Digital Imaging & Home Theater
CDTobie@...


  ----------



Datacolor
www.datacolor.com/Spyder3




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

It sounds so bad. So, this tool can be used for two years or for
producing 40 profiles only. However thanks for the response.
Bye
Daniel



--- In DigitalBlackandWhiteThePrint@yahoogroups.com, C D Tobie
<CDTobie@...> wrote:

>
> 
> On Feb 11, 2009, at 5:15 AM, nadar1900 wrote:
> 
> > I have used the spectrocolorimeter datacolor #1005 of my PrintFixPro
> > package for 2 years, profiling about 40 different papers for color and
> > grayscale with good results. But, just in the last days, measurements
> > of dark patches seem quite strange on the color coordinates in Lab
> > values. For example, here 5 Lab measurements of the step 96 in a 51
> > steps grayscale, waiting about 5-10 second between them:
> > 1) 7,99 | -2,91 | 1,26
> > 2) 8,25 | -1,29 | -0,9
> > 3) 8,11 | -0,85 | -1,1
> > 4) 8,29 | -0,22 | -2,13
> > 5) 8,00 | -1,47 | 1,28
> >
> > B value range from 1,28 to -2,13 and I can notice an evident loss of
> > contiguity, for a and b values for dark patches, comparing same paper
> > profiles created in the last days and one month ago.
> > I have repeated the same tests with different sw upgrades, from
> > PrintFix 1.0 to Spyder3Print, on different computers and different usb
> > ports, but nothing to do.
> > Have you any suggestions?
> 
> Since this appears to be a hardware based issue, if the variance is  
> beyond what your usage allows for, you will have to purchase another  
> unit, since your current one is beyond warranty. Sorry!
> 
> C. David Tobie
> Global Product Technology Manager
> Digital Imaging & Home Theater
> CDTobie@...
> 
> 
>   ----------
> 
> 
> 
> Datacolor
> www.datacolor.com/Spyder3
> 
> 
> 
> 
> [Non-text portions of this message have been removed]
>

On Feb 11, 2009, at 10:20 AM, nadar1900 wrote:

> It sounds so bad. So, this tool can be used for two years or for
> producing 40 profiles only. However thanks for the response.

Yours is actually the first, out of thousands, that I have heard of  
doing this. But its well beyond warranty, so if its a hardware issue,  
then thats the end of the story. After all, the way such devices are  
built affordably is by making them fixed units. There is no mechanism  
for repair. I've been carrying one around in my briefcase for years,  
and it still works as expected. So please do not assume your  
individual case is universal. Its also worth noting that your unit may  
still do fine for building color profiles, you are using for a  
different process.

C. David Tobie
Global Product Technology Manager
Digital Imaging & Home Theater
CDTobie@...


  ----------



Datacolor
www.datacolor.com/Spyder3




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

This is evident, I have been unlucky with Datacolor, then I will try
another brand.



--- In DigitalBlackandWhiteThePrint@yahoogroups.com, C D Tobie
<CDTobie@...> wrote:

>
> 
> On Feb 11, 2009, at 10:20 AM, nadar1900 wrote:
> 
> > It sounds so bad. So, this tool can be used for two years or for
> > producing 40 profiles only. However thanks for the response.
> 
> Yours is actually the first, out of thousands, that I have heard of  
> doing this. But its well beyond warranty, so if its a hardware issue,  
> then thats the end of the story. After all, the way such devices are  
> built affordably is by making them fixed units. There is no mechanism  
> for repair. I've been carrying one around in my briefcase for years,  
> and it still works as expected. So please do not assume your  
> individual case is universal. Its also worth noting that your unit may  
> still do fine for building color profiles, you are using for a  
> different process.
> 
> C. David Tobie
> Global Product Technology Manager
> Digital Imaging & Home Theater
> CDTobie@...
> 
> 
>   ----------
> 
> 
> 
> Datacolor
> www.datacolor.com/Spyder3
> 
> 
> 
> 
> [Non-text portions of this message have been removed]
>