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My question is when I go ICC Profile Registry and look at the total print density for CRPC6 it says 320%. When I look at the standard print guidelines poster from iLearning+ is says 300%. Which one is correct?

Thanks

Hi Tim.

If you look at the stats in Chromix's ColorThink, this is what it reports (highlighted in yellow):

Slightly different TILs depending on rendering intent, but roughly hovering around 315%.

Based on past experience, I tend to trust what I see in this application.

Regards.

Marco Ugolini

My question is when I go ICC Profile Registry and look at the total print density for CRPC6 it says 320%. When I look at the standard print guidelines poster from iLearning+ is says 300%. Which one is correct?

Thanks

Hi Tim.

If you look at the stats in Chromix's ColorThink, this is what it reports (highlighted in yellow):

Slightly different TILs depending on rendering intent, but roughly hovering around 315%.

Based on past experience, I tend to trust what I see in this application.

Regards.

Marco Ugolini

My question is when I go ICC Profile Registry and look at the total print density for CRPC6 it says 320%. When I look at the standard print guidelines poster from iLearning+ is says 300%. Which one is correct?

Thanks

Hi Tim.

If you look at the stats in Chromix's ColorThink, this is what it reports (highlighted in yellow):

Slightly different TILs depending on rendering intent, but roughly hovering around 315%.

Based on past experience, I tend to trust what I see in this application.

Regards.

Marco Ugolini

My question is when I go ICC Profile Registry and look at the total print density for CRPC6 it says 320%. When I look at the standard print guidelines poster from iLearning+ is says 300%. Which one is correct?

Thanks

Hi Tim,

Here are the numbers for CRPC3:

ColorThink is pretty handy, in more ways than this!

Hi Tim.

If you look at the stats in Chromix's ColorThink, this is what it reports (highlighted in yellow):

Slightly different TILs depending on rendering intent, but roughly hovering around 315%.

Based on past experience, I tend to trust what I see in this application.

Regards.

Marco Ugolini

My question is when I go ICC Profile Registry and look at the total print density for CRPC6 it says 320%. When I look at the standard print guidelines poster from iLearning+ is says 300%. Which one is correct?

Thanks

Not so fast, Pat. If the question is truly density, only approximations are possible, as the characterization data set includes only Lab numbers for each device value, and there is no fixed relationship between density and Lab values. If one has a spectral reading density can be computed by various formulas--which themselves may give slightly different results. The standard advice is good: Once the desired Lab targets have been achieved, the user's densitometer or process control software's density reading is used as the density target. 

Hi Tim,

Here are the numbers for CRPC3:

ColorThink is pretty handy, in more ways than this!

Hi Tim.

If you look at the stats in Chromix's ColorThink, this is what it reports (highlighted in yellow):

Slightly different TILs depending on rendering intent, but roughly hovering around 315%.

Based on past experience, I tend to trust what I see in this application.

Regards.

Marco Ugolini

My question is when I go ICC Profile Registry and look at the total print density for CRPC6 it says 320%. When I look at the standard print guidelines poster from iLearning+ is says 300%. Which one is correct?

Thanks

Not to mention density isn't color, ink film thickness can change quite frequently on Press , each color and many have similar densities which further verifies density isn't color at all. LAB values only on Press to reduce color variation.

Dan Hahn

Printing Mgr.     

402 East Commerce Street

Best Regards,

www.lpcink.com

402 East Commerce Street

Lewisburg, Tennessee 37091                    

c: 904-868-9603                   

dan.hahn@... 

Disclaimer

The information contained in this communication from the sender is confidential. It is intended solely for use by the recipient and others authorized to receive it. If you are not the recipient, you are hereby notified that any disclosure, copying, distribution or taking action in relation of the contents of this information is strictly prohibited and may be unlawful.

This email has been scanned for viruses and malware, and may have been automatically archived by Mimecast Ltd, an innovator in Software as a Service (SaaS) for business. Providing a safer and more useful place for your human generated data. Specializing in; Security, archiving and compliance. To find out more Click Here.

Not so fast, Pat. If the question is truly density, only approximations are possible, as the characterization data set includes only Lab numbers for each device value, and there is no fixed relationship between density and Lab values. If one has a spectral reading density can be computed by various formulas--which themselves may give slightly different results. The standard advice is good: Once the desired Lab targets have been achieved, the user's densitometer or process control software's density reading is used as the density target. 

Hi Tim,

Here are the numbers for CRPC3:

ColorThink is pretty handy, in more ways than this!

Hi Tim.

If you look at the stats in Chromix's ColorThink, this is what it reports (highlighted in yellow):

Slightly different TILs depending on rendering intent, but roughly hovering around 315%.

Based on past experience, I tend to trust what I see in this application.

Regards.

Marco Ugolini

My question is when I go ICC Profile Registry and look at the total print density for CRPC6 it says 320%. When I look at the standard print guidelines poster from iLearning+ is says 300%. Which one is correct?

Thanks

Not to mention density isn't color, ink film thickness can change quite frequently on Press , each color and many have similar densities which further verifies density isn't color at all. LAB values only on Press to reduce color variation.

Dan Hahn

Printing Mgr.     

402 East Commerce Street

Best Regards,

www.lpcink.com

402 East Commerce Street

Lewisburg, Tennessee 37091                    

c: 904-868-9603                   

<maskemail>dan.hahn@...</maskemail> 

Disclaimer

The information contained in this communication from the sender is confidential. It is intended solely for use by the recipient and others authorized to receive it. If you are not the recipient, you are hereby notified that any disclosure, copying, distribution or taking action in relation of the contents of this information is strictly prohibited and may be unlawful.

This email has been scanned for viruses and malware, and may have been automatically archived by Mimecast Ltd, an innovator in Software as a Service (SaaS) for business. Providing a safer and more useful place for your human generated data. Specializing in; Security, archiving and compliance. To find out more Click Here.

Not so fast, Pat. If the question is truly density, only approximations are possible, as the characterization data set includes only Lab numbers for each device value, and there is no fixed relationship between density and Lab values. If one has a spectral reading density can be computed by various formulas--which themselves may give slightly different results. The standard advice is good: Once the desired Lab targets have been achieved, the user's densitometer or process control software's density reading is used as the density target. 

Hi Tim,

Here are the numbers for CRPC3:

ColorThink is pretty handy, in more ways than this!

Hi Tim.

If you look at the stats in Chromix's ColorThink, this is what it reports (highlighted in yellow):

Slightly different TILs depending on rendering intent, but roughly hovering around 315%.

Based on past experience, I tend to trust what I see in this application.

Regards.

Marco Ugolini

My question is when I go ICC Profile Registry and look at the total print density for CRPC6 it says 320%. When I look at the standard print guidelines poster from iLearning+ is says 300%. Which one is correct?

Thanks

That's certainly possible, but the term was used in Tim Castellano's question, so it's probably a good idea to raise the point. It's not always well understood.

As to Dan Hahn's correct point, we might wish to repeat the standard advice that density has a very useful place in the pressroom, as it is a single number that simplifies the operator's task. So long as the density numbers are arrived at by targeting the Lab specs for the print condition at hand they work very well within a reasonable range. If one is running exceptionally high ink films density numbers may be harder to evaluate as hues may hook, but if targeting CRPC3 or other "normal" conditions this shouldn't be an issue.

Not to mention density isn't color, ink film thickness can change quite frequently on Press , each color and many have similar densities which further verifies density isn't color at all. LAB values only on Press to reduce color variation.

Dan Hahn

Printing Mgr.     

402 East Commerce Street

Best Regards,

www.lpcink.com

402 East Commerce Street

Lewisburg, Tennessee 37091                    

c: 904-868-9603                   

<maskemail>dan.hahn@...</maskemail> 

Disclaimer

The information contained in this communication from the sender is confidential. It is intended solely for use by the recipient and others authorized to receive it. If you are not the recipient, you are hereby notified that any disclosure, copying, distribution or taking action in relation of the contents of this information is strictly prohibited and may be unlawful.

This email has been scanned for viruses and malware, and may have been automatically archived by Mimecast Ltd, an innovator in Software as a Service (SaaS) for business. Providing a safer and more useful place for your human generated data. Specializing in; Security, archiving and compliance. To find out more Click Here.

Not so fast, Pat. If the question is truly density, only approximations are possible, as the characterization data set includes only Lab numbers for each device value, and there is no fixed relationship between density and Lab values. If one has a spectral reading density can be computed by various formulas--which themselves may give slightly different results. The standard advice is good: Once the desired Lab targets have been achieved, the user's densitometer or process control software's density reading is used as the density target. 

Hi Tim,

Here are the numbers for CRPC3:

ColorThink is pretty handy, in more ways than this!

Hi Tim.

If you look at the stats in Chromix's ColorThink, this is what it reports (highlighted in yellow):

Slightly different TILs depending on rendering intent, but roughly hovering around 315%.

Based on past experience, I tend to trust what I see in this application.

Regards.

Marco Ugolini

My question is when I go ICC Profile Registry and look at the total print density for CRPC6 it says 320%. When I look at the standard print guidelines poster from iLearning+ is says 300%. Which one is correct?

Thanks

Say Tim,  You're going to have to come to our rescue here!  Your original post does mention density, but the numbers you have a question about are in the range of 300 - 320.  These are Total Ink Limit numbers.  An actual density number for CRPC6 would be something like 1.997.  So tell us a little more about what you're looking for...?

That's certainly possible, but the term was used in Tim Castellano's question, so it's probably a good idea to raise the point. It's not always well understood.

As to Dan Hahn's correct point, we might wish to repeat the standard advice that density has a very useful place in the pressroom, as it is a single number that simplifies the operator's task. So long as the density numbers are arrived at by targeting the Lab specs for the print condition at hand they work very well within a reasonable range. If one is running exceptionally high ink films density numbers may be harder to evaluate as hues may hook, but if targeting CRPC3 or other "normal" conditions this shouldn't be an issue.

Not to mention density isn't color, ink film thickness can change quite frequently on Press , each color and many have similar densities which further verifies density isn't color at all. LAB values only on Press to reduce color variation.

Dan Hahn

Printing Mgr.     

402 East Commerce Street

Best Regards,

www.lpcink.com

402 East Commerce Street

Lewisburg, Tennessee 37091                    

c: 904-868-9603                   

<maskemail>dan.hahn@...</maskemail> 

Disclaimer

The information contained in this communication from the sender is confidential. It is intended solely for use by the recipient and others authorized to receive it. If you are not the recipient, you are hereby notified that any disclosure, copying, distribution or taking action in relation of the contents of this information is strictly prohibited and may be unlawful.

This email has been scanned for viruses and malware, and may have been automatically archived by Mimecast Ltd, an innovator in Software as a Service (SaaS) for business. Providing a safer and more useful place for your human generated data. Specializing in; Security, archiving and compliance. To find out more Click Here.

Not so fast, Pat. If the question is truly density, only approximations are possible, as the characterization data set includes only Lab numbers for each device value, and there is no fixed relationship between density and Lab values. If one has a spectral reading density can be computed by various formulas--which themselves may give slightly different results. The standard advice is good: Once the desired Lab targets have been achieved, the user's densitometer or process control software's density reading is used as the density target. 

Hi Tim,

Here are the numbers for CRPC3:

ColorThink is pretty handy, in more ways than this!

Hi Tim.

If you look at the stats in Chromix's ColorThink, this is what it reports (highlighted in yellow):

Slightly different TILs depending on rendering intent, but roughly hovering around 315%.

Based on past experience, I tend to trust what I see in this application.

Regards.

Marco Ugolini

My question is when I go ICC Profile Registry and look at the total print density for CRPC6 it says 320%. When I look at the standard print guidelines poster from iLearning+ is says 300%. Which one is correct?

Thanks

Say Tim,  You're going to have to come to our rescue here!  Your original post does mention density, but the numbers you have a question about are in the range of 300 - 320.  These are Total Ink Limit numbers.  An actual density number for CRPC6 would be something like 1.997.  So tell us a little more about what you're looking for...?

That's certainly possible, but the term was used in Tim Castellano's question, so it's probably a good idea to raise the point. It's not always well understood.

As to Dan Hahn's correct point, we might wish to repeat the standard advice that density has a very useful place in the pressroom, as it is a single number that simplifies the operator's task. So long as the density numbers are arrived at by targeting the Lab specs for the print condition at hand they work very well within a reasonable range. If one is running exceptionally high ink films density numbers may be harder to evaluate as hues may hook, but if targeting CRPC3 or other "normal" conditions this shouldn't be an issue.

Not to mention density isn't color, ink film thickness can change quite frequently on Press , each color and many have similar densities which further verifies density isn't color at all. LAB values only on Press to reduce color variation.

Dan Hahn

Printing Mgr.     

402 East Commerce Street

Best Regards,

www.lpcink.com

402 East Commerce Street

Lewisburg, Tennessee 37091                    

c: 904-868-9603                   

<maskemail>dan.hahn@...</maskemail> 

Disclaimer

The information contained in this communication from the sender is confidential. It is intended solely for use by the recipient and others authorized to receive it. If you are not the recipient, you are hereby notified that any disclosure, copying, distribution or taking action in relation of the contents of this information is strictly prohibited and may be unlawful.

This email has been scanned for viruses and malware, and may have been automatically archived by Mimecast Ltd, an innovator in Software as a Service (SaaS) for business. Providing a safer and more useful place for your human generated data. Specializing in; Security, archiving and compliance. To find out more Click Here.

Not so fast, Pat. If the question is truly density, only approximations are possible, as the characterization data set includes only Lab numbers for each device value, and there is no fixed relationship between density and Lab values. If one has a spectral reading density can be computed by various formulas--which themselves may give slightly different results. The standard advice is good: Once the desired Lab targets have been achieved, the user's densitometer or process control software's density reading is used as the density target. 

Hi Tim,

Here are the numbers for CRPC3:

ColorThink is pretty handy, in more ways than this!

Hi Tim.

If you look at the stats in Chromix's ColorThink, this is what it reports (highlighted in yellow):

Slightly different TILs depending on rendering intent, but roughly hovering around 315%.

Based on past experience, I tend to trust what I see in this application.

Regards.

Marco Ugolini

My question is when I go ICC Profile Registry and look at the total print density for CRPC6 it says 320%. When I look at the standard print guidelines poster from iLearning+ is says 300%. Which one is correct?

Thanks

Say Tim,  You're going to have to come to our rescue here!  Your original post does mention density, but the numbers you have a question about are in the range of 300 - 320.  These are Total Ink Limit numbers.  An actual density number for CRPC6 would be something like 1.997.  So tell us a little more about what you're looking for...?

That's certainly possible, but the term was used in Tim Castellano's question, so it's probably a good idea to raise the point. It's not always well understood.

As to Dan Hahn's correct point, we might wish to repeat the standard advice that density has a very useful place in the pressroom, as it is a single number that simplifies the operator's task. So long as the density numbers are arrived at by targeting the Lab specs for the print condition at hand they work very well within a reasonable range. If one is running exceptionally high ink films density numbers may be harder to evaluate as hues may hook, but if targeting CRPC3 or other "normal" conditions this shouldn't be an issue.

Not to mention density isn't color, ink film thickness can change quite frequently on Press , each color and many have similar densities which further verifies density isn't color at all. LAB values only on Press to reduce color variation.

Dan Hahn

Printing Mgr.     

402 East Commerce Street

Best Regards,

www.lpcink.com

402 East Commerce Street

Lewisburg, Tennessee 37091                    

c: 904-868-9603                   

<maskemail>dan.hahn@...</maskemail> 

Disclaimer

The information contained in this communication from the sender is confidential. It is intended solely for use by the recipient and others authorized to receive it. If you are not the recipient, you are hereby notified that any disclosure, copying, distribution or taking action in relation of the contents of this information is strictly prohibited and may be unlawful.

This email has been scanned for viruses and malware, and may have been automatically archived by Mimecast Ltd, an innovator in Software as a Service (SaaS) for business. Providing a safer and more useful place for your human generated data. Specializing in; Security, archiving and compliance. To find out more Click Here.

Not so fast, Pat. If the question is truly density, only approximations are possible, as the characterization data set includes only Lab numbers for each device value, and there is no fixed relationship between density and Lab values. If one has a spectral reading density can be computed by various formulas--which themselves may give slightly different results. The standard advice is good: Once the desired Lab targets have been achieved, the user's densitometer or process control software's density reading is used as the density target. 

Hi Tim,

Here are the numbers for CRPC3:

ColorThink is pretty handy, in more ways than this!

Hi Tim.

If you look at the stats in Chromix's ColorThink, this is what it reports (highlighted in yellow):

Slightly different TILs depending on rendering intent, but roughly hovering around 315%.

Based on past experience, I tend to trust what I see in this application.

Regards.

Marco Ugolini

My question is when I go ICC Profile Registry and look at the total print density for CRPC6 it says 320%. When I look at the standard print guidelines poster from iLearning+ is says 300%. Which one is correct?

Thanks

To answer your question directly, it sounds as if the iLearning chart is at variance with the "official" profile for CRPC6, which is 320%.

Say Tim,  You're going to have to come to our rescue here!  Your original post does mention density, but the numbers you have a question about are in the range of 300 - 320.  These are Total Ink Limit numbers.  An actual density number for CRPC6 would be something like 1.997.  So tell us a little more about what you're looking for...?

That's certainly possible, but the term was used in Tim Castellano's question, so it's probably a good idea to raise the point. It's not always well understood.

As to Dan Hahn's correct point, we might wish to repeat the standard advice that density has a very useful place in the pressroom, as it is a single number that simplifies the operator's task. So long as the density numbers are arrived at by targeting the Lab specs for the print condition at hand they work very well within a reasonable range. If one is running exceptionally high ink films density numbers may be harder to evaluate as hues may hook, but if targeting CRPC3 or other "normal" conditions this shouldn't be an issue.

Not to mention density isn't color, ink film thickness can change quite frequently on Press , each color and many have similar densities which further verifies density isn't color at all. LAB values only on Press to reduce color variation.

Dan Hahn

Printing Mgr.     

402 East Commerce Street

Best Regards,

www.lpcink.com

402 East Commerce Street

Lewisburg, Tennessee 37091                    

c: 904-868-9603                   

<maskemail>dan.hahn@...</maskemail> 

Disclaimer

The information contained in this communication from the sender is confidential. It is intended solely for use by the recipient and others authorized to receive it. If you are not the recipient, you are hereby notified that any disclosure, copying, distribution or taking action in relation of the contents of this information is strictly prohibited and may be unlawful.

This email has been scanned for viruses and malware, and may have been automatically archived by Mimecast Ltd, an innovator in Software as a Service (SaaS) for business. Providing a safer and more useful place for your human generated data. Specializing in; Security, archiving and compliance. To find out more Click Here.

Not so fast, Pat. If the question is truly density, only approximations are possible, as the characterization data set includes only Lab numbers for each device value, and there is no fixed relationship between density and Lab values. If one has a spectral reading density can be computed by various formulas--which themselves may give slightly different results. The standard advice is good: Once the desired Lab targets have been achieved, the user's densitometer or process control software's density reading is used as the density target. 

Hi Tim,

Here are the numbers for CRPC3:

ColorThink is pretty handy, in more ways than this!

Hi Tim.

If you look at the stats in Chromix's ColorThink, this is what it reports (highlighted in yellow):

Slightly different TILs depending on rendering intent, but roughly hovering around 315%.

Based on past experience, I tend to trust what I see in this application.

Regards.

Marco Ugolini

My question is when I go ICC Profile Registry and look at the total print density for CRPC6 it says 320%. When I look at the standard print guidelines poster from iLearning+ is says 300%. Which one is correct?

Thanks

To answer your question directly, it sounds as if the iLearning chart is at variance with the "official" profile for CRPC6, which is 320%.

Say Tim,  You're going to have to come to our rescue here!  Your original post does mention density, but the numbers you have a question about are in the range of 300 - 320.  These are Total Ink Limit numbers.  An actual density number for CRPC6 would be something like 1.997.  So tell us a little more about what you're looking for...?

That's certainly possible, but the term was used in Tim Castellano's question, so it's probably a good idea to raise the point. It's not always well understood.

As to Dan Hahn's correct point, we might wish to repeat the standard advice that density has a very useful place in the pressroom, as it is a single number that simplifies the operator's task. So long as the density numbers are arrived at by targeting the Lab specs for the print condition at hand they work very well within a reasonable range. If one is running exceptionally high ink films density numbers may be harder to evaluate as hues may hook, but if targeting CRPC3 or other "normal" conditions this shouldn't be an issue.

Not to mention density isn't color, ink film thickness can change quite frequently on Press , each color and many have similar densities which further verifies density isn't color at all. LAB values only on Press to reduce color variation.

Dan Hahn

Printing Mgr.     

402 East Commerce Street

Best Regards,

www.lpcink.com

402 East Commerce Street

Lewisburg, Tennessee 37091                    

c: 904-868-9603                   

<maskemail>dan.hahn@...</maskemail> 

Disclaimer

The information contained in this communication from the sender is confidential. It is intended solely for use by the recipient and others authorized to receive it. If you are not the recipient, you are hereby notified that any disclosure, copying, distribution or taking action in relation of the contents of this information is strictly prohibited and may be unlawful.

This email has been scanned for viruses and malware, and may have been automatically archived by Mimecast Ltd, an innovator in Software as a Service (SaaS) for business. Providing a safer and more useful place for your human generated data. Specializing in; Security, archiving and compliance. To find out more Click Here.

Not so fast, Pat. If the question is truly density, only approximations are possible, as the characterization data set includes only Lab numbers for each device value, and there is no fixed relationship between density and Lab values. If one has a spectral reading density can be computed by various formulas--which themselves may give slightly different results. The standard advice is good: Once the desired Lab targets have been achieved, the user's densitometer or process control software's density reading is used as the density target. 

Hi Tim,

Here are the numbers for CRPC3:

ColorThink is pretty handy, in more ways than this!

Hi Tim.

If you look at the stats in Chromix's ColorThink, this is what it reports (highlighted in yellow):

Slightly different TILs depending on rendering intent, but roughly hovering around 315%.

Based on past experience, I tend to trust what I see in this application.

Regards.

Marco Ugolini

My question is when I go ICC Profile Registry and look at the total print density for CRPC6 it says 320%. When I look at the standard print guidelines poster from iLearning+ is says 300%. Which one is correct?

Thanks

To answer your question directly, it sounds as if the iLearning chart is at variance with the "official" profile for CRPC6, which is 320%.

Say Tim,  You're going to have to come to our rescue here!  Your original post does mention density, but the numbers you have a question about are in the range of 300 - 320.  These are Total Ink Limit numbers.  An actual density number for CRPC6 would be something like 1.997.  So tell us a little more about what you're looking for...?

That's certainly possible, but the term was used in Tim Castellano's question, so it's probably a good idea to raise the point. It's not always well understood.

As to Dan Hahn's correct point, we might wish to repeat the standard advice that density has a very useful place in the pressroom, as it is a single number that simplifies the operator's task. So long as the density numbers are arrived at by targeting the Lab specs for the print condition at hand they work very well within a reasonable range. If one is running exceptionally high ink films density numbers may be harder to evaluate as hues may hook, but if targeting CRPC3 or other "normal" conditions this shouldn't be an issue.

Not to mention density isn't color, ink film thickness can change quite frequently on Press , each color and many have similar densities which further verifies density isn't color at all. LAB values only on Press to reduce color variation.

Dan Hahn

Printing Mgr.     

402 East Commerce Street

Best Regards,

www.lpcink.com

402 East Commerce Street

Lewisburg, Tennessee 37091                    

c: 904-868-9603                   

<maskemail>dan.hahn@...</maskemail> 

Disclaimer

The information contained in this communication from the sender is confidential. It is intended solely for use by the recipient and others authorized to receive it. If you are not the recipient, you are hereby notified that any disclosure, copying, distribution or taking action in relation of the contents of this information is strictly prohibited and may be unlawful.

This email has been scanned for viruses and malware, and may have been automatically archived by Mimecast Ltd, an innovator in Software as a Service (SaaS) for business. Providing a safer and more useful place for your human generated data. Specializing in; Security, archiving and compliance. To find out more Click Here.

Not so fast, Pat. If the question is truly density, only approximations are possible, as the characterization data set includes only Lab numbers for each device value, and there is no fixed relationship between density and Lab values. If one has a spectral reading density can be computed by various formulas--which themselves may give slightly different results. The standard advice is good: Once the desired Lab targets have been achieved, the user's densitometer or process control software's density reading is used as the density target. 

Hi Tim,

Here are the numbers for CRPC3:

ColorThink is pretty handy, in more ways than this!

Hi Tim.

If you look at the stats in Chromix's ColorThink, this is what it reports (highlighted in yellow):

Slightly different TILs depending on rendering intent, but roughly hovering around 315%.

Based on past experience, I tend to trust what I see in this application.

Regards.

Marco Ugolini

My question is when I go ICC Profile Registry and look at the total print density for CRPC6 it says 320%. When I look at the standard print guidelines poster from iLearning+ is says 300%. Which one is correct?

Thanks

For the curious, here is a look at the color generation scheme of the "official" GRACoL2013 profile made in i1Profiler.

To answer your question directly, it sounds as if the iLearning chart is at variance with the "official" profile for CRPC6, which is 320%.

Say Tim,  You're going to have to come to our rescue here!  Your original post does mention density, but the numbers you have a question about are in the range of 300 - 320.  These are Total Ink Limit numbers.  An actual density number for CRPC6 would be something like 1.997.  So tell us a little more about what you're looking for...?

That's certainly possible, but the term was used in Tim Castellano's question, so it's probably a good idea to raise the point. It's not always well understood.

As to Dan Hahn's correct point, we might wish to repeat the standard advice that density has a very useful place in the pressroom, as it is a single number that simplifies the operator's task. So long as the density numbers are arrived at by targeting the Lab specs for the print condition at hand they work very well within a reasonable range. If one is running exceptionally high ink films density numbers may be harder to evaluate as hues may hook, but if targeting CRPC3 or other "normal" conditions this shouldn't be an issue.

Not to mention density isn't color, ink film thickness can change quite frequently on Press , each color and many have similar densities which further verifies density isn't color at all. LAB values only on Press to reduce color variation.

Dan Hahn

Printing Mgr.     

402 East Commerce Street

Best Regards,

www.lpcink.com

402 East Commerce Street

Lewisburg, Tennessee 37091                    

c: 904-868-9603                   

<maskemail>dan.hahn@...</maskemail> 

Disclaimer

The information contained in this communication from the sender is confidential. It is intended solely for use by the recipient and others authorized to receive it. If you are not the recipient, you are hereby notified that any disclosure, copying, distribution or taking action in relation of the contents of this information is strictly prohibited and may be unlawful.

This email has been scanned for viruses and malware, and may have been automatically archived by Mimecast Ltd, an innovator in Software as a Service (SaaS) for business. Providing a safer and more useful place for your human generated data. Specializing in; Security, archiving and compliance. To find out more Click Here.

Not so fast, Pat. If the question is truly density, only approximations are possible, as the characterization data set includes only Lab numbers for each device value, and there is no fixed relationship between density and Lab values. If one has a spectral reading density can be computed by various formulas--which themselves may give slightly different results. The standard advice is good: Once the desired Lab targets have been achieved, the user's densitometer or process control software's density reading is used as the density target. 

Hi Tim,

Here are the numbers for CRPC3:

ColorThink is pretty handy, in more ways than this!

Hi Tim.

If you look at the stats in Chromix's ColorThink, this is what it reports (highlighted in yellow):

Slightly different TILs depending on rendering intent, but roughly hovering around 315%.

Based on past experience, I tend to trust what I see in this application.

Regards.

Marco Ugolini

My question is when I go ICC Profile Registry and look at the total print density for CRPC6 it says 320%. When I look at the standard print guidelines poster from iLearning+ is says 300%. Which one is correct?

Thanks

For the curious, here is a look at the color generation scheme of the "official" GRACoL2013 profile made in i1Profiler.

To answer your question directly, it sounds as if the iLearning chart is at variance with the "official" profile for CRPC6, which is 320%.

Say Tim,  You're going to have to come to our rescue here!  Your original post does mention density, but the numbers you have a question about are in the range of 300 - 320.  These are Total Ink Limit numbers.  An actual density number for CRPC6 would be something like 1.997.  So tell us a little more about what you're looking for...?

That's certainly possible, but the term was used in Tim Castellano's question, so it's probably a good idea to raise the point. It's not always well understood.

As to Dan Hahn's correct point, we might wish to repeat the standard advice that density has a very useful place in the pressroom, as it is a single number that simplifies the operator's task. So long as the density numbers are arrived at by targeting the Lab specs for the print condition at hand they work very well within a reasonable range. If one is running exceptionally high ink films density numbers may be harder to evaluate as hues may hook, but if targeting CRPC3 or other "normal" conditions this shouldn't be an issue.

Not to mention density isn't color, ink film thickness can change quite frequently on Press , each color and many have similar densities which further verifies density isn't color at all. LAB values only on Press to reduce color variation.

Dan Hahn

Printing Mgr.     

402 East Commerce Street

Best Regards,

www.lpcink.com

402 East Commerce Street

Lewisburg, Tennessee 37091                    

c: 904-868-9603                   

<maskemail>dan.hahn@...</maskemail> 

Disclaimer

The information contained in this communication from the sender is confidential. It is intended solely for use by the recipient and others authorized to receive it. If you are not the recipient, you are hereby notified that any disclosure, copying, distribution or taking action in relation of the contents of this information is strictly prohibited and may be unlawful.

This email has been scanned for viruses and malware, and may have been automatically archived by Mimecast Ltd, an innovator in Software as a Service (SaaS) for business. Providing a safer and more useful place for your human generated data. Specializing in; Security, archiving and compliance. To find out more Click Here.

Not so fast, Pat. If the question is truly density, only approximations are possible, as the characterization data set includes only Lab numbers for each device value, and there is no fixed relationship between density and Lab values. If one has a spectral reading density can be computed by various formulas--which themselves may give slightly different results. The standard advice is good: Once the desired Lab targets have been achieved, the user's densitometer or process control software's density reading is used as the density target. 

Hi Tim,

Here are the numbers for CRPC3:

ColorThink is pretty handy, in more ways than this!

Hi Tim.

If you look at the stats in Chromix's ColorThink, this is what it reports (highlighted in yellow):

Slightly different TILs depending on rendering intent, but roughly hovering around 315%.

Based on past experience, I tend to trust what I see in this application.

Regards.

Marco Ugolini

My question is when I go ICC Profile Registry and look at the total print density for CRPC6 it says 320%. When I look at the standard print guidelines poster from iLearning+ is says 300%. Which one is correct?

Thanks

Hi Tim.

If you look at the stats in Chromix's ColorThink, this is what it reports (highlighted in yellow):

Slightly different TILs depending on rendering intent, but roughly hovering around 315%.

Based on past experience, I tend to trust what I see in this application.

Regards.

Marco Ugolini

My question is when I go ICC Profile Registry and look at the total print density for CRPC6 it says 320%. When I look at the standard print guidelines poster from iLearning+ is says 300%. Which one is correct?

Thanks