Discussion: View Thread

Good Morning,

I will calibrate an Epson P20000 with PrintFactory RIP. Anybody has experience how is possible to indtroduce G7 curves in this RIP?

Thanks in advanced and Regards

Joan López

------------------------------
Joan Lopez
CTO
GPG Soluciones Graficas
Valdemoro
+34610463490
------------------------------

The G7 calibration process is fast and simple using any of
several G7 Certified software applications. First, with the
printing system in its normal default state,5
a standard
target–such as a P2P51–is printed then scanned on a
spectrophotometer. The software generates the curves
automatically. Once the curves are installed in the RIP,
the device is calibrated. Once a device is G7 calibrated,
a custom ICC profile can be created and used with
confidence
__________________________
Reliable Permit Solutions, LLC

------------------------------
Mathy Green
Manager
American Management Association
Bellerose NY
------------------------------

Original Message:
Sent: 12-10-2020 04:11 AM
From: Joan Lopez
Subject: PrintFactory RIP

Good Morning,

I will calibrate an Epson P20000 with PrintFactory RIP. Anybody has experience how is possible to indtroduce G7 curves in this RIP?

Thanks in advanced and Regards

Joan López

------------------------------
Joan Lopez
CTO
GPG Soluciones Graficas
Valdemoro
+34610463490
------------------------------

Hi Mathy,

Im sorry is my first message I wasn't clear. My doubt is about if ist possible to enter G7 curves generated in 3rd software into PrintFzctory, Now I know the reply: NO.

but, thanks for your appreciate reply.

BR

------------------------------
Joan Lopez
CTO
GPG Soluciones Graficas
Valdemoro
+34610463490
------------------------------

Original Message:
Sent: 03-18-2021 12:13 PM
From: Mathy Green
Subject: PrintFactory RIP

The G7 calibration process is fast and simple using any of
several G7 Certified software applications. First, with the
printing system in its normal default state,5
a standard
target–such as a P2P51–is printed then scanned on a
spectrophotometer. The software generates the curves
automatically. Once the curves are installed in the RIP,
the device is calibrated. Once a device is G7 calibrated,
a custom ICC profile can be created and used with
confidence
__________________________
Reliable Permit Solutions, LLC

------------------------------
Mathy Green
Manager
American Management Association
Bellerose NY

Original Message:
Sent: 12-10-2020 04:11 AM
From: Joan Lopez
Subject: PrintFactory RIP

Good Morning,

I will calibrate an Epson P20000 with PrintFactory RIP. Anybody has experience how is possible to indtroduce G7 curves in this RIP?

Thanks in advanced and Regards

Joan López

------------------------------
Joan Lopez
CTO
GPG Soluciones Graficas
Valdemoro
+34610463490
------------------------------

Original Message:
Sent: 3/18/2021 12:13:00 PM
From: Mathy Green
Subject: RE: PrintFactory RIP

The G7 calibration process is fast and simple using any of
several G7 Certified software applications. First, with the
printing system in its normal default state,5
a standard
target–such as a P2P51–is printed then scanned on a
spectrophotometer. The software generates the curves
automatically. Once the curves are installed in the RIP,
the device is calibrated. Once a device is G7 calibrated,
a custom ICC profile can be created and used with
confidence
__________________________
Reliable Permit Solutions, LLC

------------------------------
Mathy Green
Manager
American Management Association
Bellerose NY
------------------------------

Original Message:
Sent: 12-10-2020 04:11 AM
From: Joan Lopez
Subject: PrintFactory RIP

Good Morning,

I will calibrate an Epson P20000 with PrintFactory RIP. Anybody has experience how is possible to indtroduce G7 curves in this RIP?

Thanks in advanced and Regards

Joan López

------------------------------
Joan Lopez
CTO
GPG Soluciones Graficas
Valdemoro
+34610463490
------------------------------

Marco, my old friend,

I would soften that statement that a G7 calibration is "the only one" that can deliver consistent output independent of vendors, etc. I think it would be more accurate to say that G7 is a rational system, based on aligning grays, of improving the match among output from various CMYK(+N) print systems without resort to "3D" color management, i.e., profiling. For similar presses/screening/inks, it may be enough to assure extremely convincing matches, but profiling will always be required for an optimal match where ink color, paper type, and overprinting characteristics differ. In digital printing the variety of inks alone make profiling a practical necessity. In these cases, one might linearize a device using G7 calibration, as a convenience, perhaps, but it should not be assumed that other linearization schemes will provide an inferior base condition for excellent output profiles, and I would not want to suggest that Print Factory or any other RIP that has no provision for applying G7 curves is somehow deficient or unable to produce repeatable results, so long as a convenient relinearizing tool is included. I would add that INconvenient recalibration tools, whether using G7 or any other methodology, will tend not to be used, and in practice this is a far bigger issue than the exact method being applied.

Mike

------------------------------
Mike Strickler
MSP Graphic Services
------------------------------

Original Message:
Sent: 03-19-2021 11:40 AM
From: Marco Ugolini
Subject: PrintFactory RIP

Hi, Mathy.

I agree that G7 press calibration is a very useful tool to assure quality in print output.

It's actually the only one I know currently that can deliver on the promise of consistent output at scale and independently of vendor or location, when implemented with the requisite process quality controls.

But the foundation cannot be simply "the printing system in its default state".

That is just too non-specific: the first step has to be to establish CIELAB aimpoints for the solid values of primaries and overprints, and to match them as closely as feasible on the printed sheets.

Only after passing that verification should one then go on to create G7 Grayscale curves.

Without the step of what I call "G7 Solids Targeted verification" (which is not exactly what we know as "G7 Targeted", because it's likely to fail Grayscale), you will not achieve uniform results across different presses and vendors, or even with just one vendor.

Regards.

Marco Ugolini

Original Message:
Sent: 3/18/2021 12:13:00 PM
From: Mathy Green
Subject: RE: PrintFactory RIP

The G7 calibration process is fast and simple using any of
several G7 Certified software applications. First, with the
printing system in its normal default state,5
a standard
target–such as a P2P51–is printed then scanned on a
spectrophotometer. The software generates the curves
automatically. Once the curves are installed in the RIP,
the device is calibrated. Once a device is G7 calibrated,
a custom ICC profile can be created and used with
confidence
__________________________
Reliable Permit Solutions, LLC

------------------------------
Mathy Green
Manager
American Management Association
Bellerose NY

Original Message:
Sent: 12-10-2020 04:11 AM
From: Joan Lopez
Subject: PrintFactory RIP

Good Morning,

I will calibrate an Epson P20000 with PrintFactory RIP. Anybody has experience how is possible to indtroduce G7 curves in this RIP?

Thanks in advanced and Regards

Joan López

------------------------------
Joan Lopez
CTO
GPG Soluciones Graficas
Valdemoro
+34610463490
------------------------------

Original Message:
Sent: 3/20/2021 2:23:00 AM
From: Mike Strickler
Subject: RE: PrintFactory RIP

Marco, my old friend,

I would soften that statement that a G7 calibration is "the only one" that can deliver consistent output independent of vendors, etc. I think it would be more accurate to say that G7 is a rational system, based on aligning grays, of improving the match among output from various CMYK(+N) print systems without resort to "3D" color management, i.e., profiling. For similar presses/screening/inks, it may be enough to assure extremely convincing matches, but profiling will always be required for an optimal match where ink color, paper type, and overprinting characteristics differ. In digital printing the variety of inks alone make profiling a practical necessity. In these cases, one might linearize a device using G7 calibration, as a convenience, perhaps, but it should not be assumed that other linearization schemes will provide an inferior base condition for excellent output profiles, and I would not want to suggest that Print Factory or any other RIP that has no provision for applying G7 curves is somehow deficient or unable to produce repeatable results, so long as a convenient relinearizing tool is included. I would add that INconvenient recalibration tools, whether using G7 or any other methodology, will tend not to be used, and in practice this is a far bigger issue than the exact method being applied.

Mike

------------------------------
Mike Strickler
MSP Graphic Services
------------------------------

Original Message:
Sent: 03-19-2021 11:40 AM
From: Marco Ugolini
Subject: PrintFactory RIP

Hi, Mathy.

I agree that G7 press calibration is a very useful tool to assure quality in print output.

It's actually the only one I know currently that can deliver on the promise of consistent output at scale and independently of vendor or location, when implemented with the requisite process quality controls.

But the foundation cannot be simply "the printing system in its default state".

That is just too non-specific: the first step has to be to establish CIELAB aimpoints for the solid values of primaries and overprints, and to match them as closely as feasible on the printed sheets.

Only after passing that verification should one then go on to create G7 Grayscale curves.

Without the step of what I call "G7 Solids Targeted verification" (which is not exactly what we know as "G7 Targeted", because it's likely to fail Grayscale), you will not achieve uniform results across different presses and vendors, or even with just one vendor.

Regards.

Marco Ugolini

Original Message:
Sent: 3/18/2021 12:13:00 PM
From: Mathy Green
Subject: RE: PrintFactory RIP

The G7 calibration process is fast and simple using any of
several G7 Certified software applications. First, with the
printing system in its normal default state,5
a standard
target–such as a P2P51–is printed then scanned on a
spectrophotometer. The software generates the curves
automatically. Once the curves are installed in the RIP,
the device is calibrated. Once a device is G7 calibrated,
a custom ICC profile can be created and used with
confidence
__________________________
Reliable Permit Solutions, LLC

------------------------------
Mathy Green
Manager
American Management Association
Bellerose NY

Original Message:
Sent: 12-10-2020 04:11 AM
From: Joan Lopez
Subject: PrintFactory RIP

Good Morning,

I will calibrate an Epson P20000 with PrintFactory RIP. Anybody has experience how is possible to indtroduce G7 curves in this RIP?

Thanks in advanced and Regards

Joan López

------------------------------
Joan Lopez
CTO
GPG Soluciones Graficas
Valdemoro
+34610463490
------------------------------

Well, when its comes to digital print, the only surefire way to match color is with profiles, I'm afraid. You can apply G7 curves, but this still must be followed by profiling. All RIPs provide some form of ink-limiting and linearization to make output conducive to good profiling. Most do this without regard to gray balance, which is achieved by way of a profiled printer referencing a G7 source profile. 

I believe there is widespread confusion on this point.

------------------------------
Mike Strickler
MSP Graphic Services
------------------------------

Original Message:
Sent: 03-20-2021 09:02 PM
From: Marco Ugolini
Subject: PrintFactory RIP

I wrote "the only one I know."

You may know others.

Regards.

Marco

Original Message:
Sent: 3/20/2021 2:23:00 AM
From: Mike Strickler
Subject: RE: PrintFactory RIP

Marco, my old friend,

I would soften that statement that a G7 calibration is "the only one" that can deliver consistent output independent of vendors, etc. I think it would be more accurate to say that G7 is a rational system, based on aligning grays, of improving the match among output from various CMYK(+N) print systems without resort to "3D" color management, i.e., profiling. For similar presses/screening/inks, it may be enough to assure extremely convincing matches, but profiling will always be required for an optimal match where ink color, paper type, and overprinting characteristics differ. In digital printing the variety of inks alone make profiling a practical necessity. In these cases, one might linearize a device using G7 calibration, as a convenience, perhaps, but it should not be assumed that other linearization schemes will provide an inferior base condition for excellent output profiles, and I would not want to suggest that Print Factory or any other RIP that has no provision for applying G7 curves is somehow deficient or unable to produce repeatable results, so long as a convenient relinearizing tool is included. I would add that INconvenient recalibration tools, whether using G7 or any other methodology, will tend not to be used, and in practice this is a far bigger issue than the exact method being applied.

Mike

------------------------------
Mike Strickler
MSP Graphic Services

Original Message:
Sent: 03-19-2021 11:40 AM
From: Marco Ugolini
Subject: PrintFactory RIP

Hi, Mathy.

I agree that G7 press calibration is a very useful tool to assure quality in print output.

It's actually the only one I know currently that can deliver on the promise of consistent output at scale and independently of vendor or location, when implemented with the requisite process quality controls.

But the foundation cannot be simply "the printing system in its default state".

That is just too non-specific: the first step has to be to establish CIELAB aimpoints for the solid values of primaries and overprints, and to match them as closely as feasible on the printed sheets.

Only after passing that verification should one then go on to create G7 Grayscale curves.

Without the step of what I call "G7 Solids Targeted verification" (which is not exactly what we know as "G7 Targeted", because it's likely to fail Grayscale), you will not achieve uniform results across different presses and vendors, or even with just one vendor.

Regards.

Marco Ugolini

Original Message:
Sent: 3/18/2021 12:13:00 PM
From: Mathy Green
Subject: RE: PrintFactory RIP

The G7 calibration process is fast and simple using any of
several G7 Certified software applications. First, with the
printing system in its normal default state,5
a standard
target–such as a P2P51–is printed then scanned on a
spectrophotometer. The software generates the curves
automatically. Once the curves are installed in the RIP,
the device is calibrated. Once a device is G7 calibrated,
a custom ICC profile can be created and used with
confidence
__________________________
Reliable Permit Solutions, LLC

------------------------------
Mathy Green
Manager
American Management Association
Bellerose NY

Original Message:
Sent: 12-10-2020 04:11 AM
From: Joan Lopez
Subject: PrintFactory RIP

Good Morning,

I will calibrate an Epson P20000 with PrintFactory RIP. Anybody has experience how is possible to indtroduce G7 curves in this RIP?

Thanks in advanced and Regards

Joan López

------------------------------
Joan Lopez
CTO
GPG Soluciones Graficas
Valdemoro
+34610463490
------------------------------

Original Message:
Sent: 3/21/2021 1:39:00 AM
From: Mike Strickler
Subject: RE: PrintFactory RIP

Well, when its comes to digital print, the only surefire way to match color is with profiles, I'm afraid. You can apply G7 curves, but this still must be followed by profiling. All RIPs provide some form of ink-limiting and linearization to make output conducive to good profiling. Most do this without regard to gray balance, which is achieved by way of a profiled printer referencing a G7 source profile. 

I believe there is widespread confusion on this point.

------------------------------
Mike Strickler
MSP Graphic Services
------------------------------

Original Message:
Sent: 03-20-2021 09:02 PM
From: Marco Ugolini
Subject: PrintFactory RIP

I wrote "the only one I know."

You may know others.

Regards.

Marco

Original Message:
Sent: 3/20/2021 2:23:00 AM
From: Mike Strickler
Subject: RE: PrintFactory RIP

Marco, my old friend,

I would soften that statement that a G7 calibration is "the only one" that can deliver consistent output independent of vendors, etc. I think it would be more accurate to say that G7 is a rational system, based on aligning grays, of improving the match among output from various CMYK(+N) print systems without resort to "3D" color management, i.e., profiling. For similar presses/screening/inks, it may be enough to assure extremely convincing matches, but profiling will always be required for an optimal match where ink color, paper type, and overprinting characteristics differ. In digital printing the variety of inks alone make profiling a practical necessity. In these cases, one might linearize a device using G7 calibration, as a convenience, perhaps, but it should not be assumed that other linearization schemes will provide an inferior base condition for excellent output profiles, and I would not want to suggest that Print Factory or any other RIP that has no provision for applying G7 curves is somehow deficient or unable to produce repeatable results, so long as a convenient relinearizing tool is included. I would add that INconvenient recalibration tools, whether using G7 or any other methodology, will tend not to be used, and in practice this is a far bigger issue than the exact method being applied.

Mike

------------------------------
Mike Strickler
MSP Graphic Services

Original Message:
Sent: 03-19-2021 11:40 AM
From: Marco Ugolini
Subject: PrintFactory RIP

Hi, Mathy.

I agree that G7 press calibration is a very useful tool to assure quality in print output.

It's actually the only one I know currently that can deliver on the promise of consistent output at scale and independently of vendor or location, when implemented with the requisite process quality controls.

But the foundation cannot be simply "the printing system in its default state".

That is just too non-specific: the first step has to be to establish CIELAB aimpoints for the solid values of primaries and overprints, and to match them as closely as feasible on the printed sheets.

Only after passing that verification should one then go on to create G7 Grayscale curves.

Without the step of what I call "G7 Solids Targeted verification" (which is not exactly what we know as "G7 Targeted", because it's likely to fail Grayscale), you will not achieve uniform results across different presses and vendors, or even with just one vendor.

Regards.

Marco Ugolini

Original Message:
Sent: 3/18/2021 12:13:00 PM
From: Mathy Green
Subject: RE: PrintFactory RIP

The G7 calibration process is fast and simple using any of
several G7 Certified software applications. First, with the
printing system in its normal default state,5
a standard
target–such as a P2P51–is printed then scanned on a
spectrophotometer. The software generates the curves
automatically. Once the curves are installed in the RIP,
the device is calibrated. Once a device is G7 calibrated,
a custom ICC profile can be created and used with
confidence
__________________________
Reliable Permit Solutions, LLC

------------------------------
Mathy Green
Manager
American Management Association
Bellerose NY

Original Message:
Sent: 12-10-2020 04:11 AM
From: Joan Lopez
Subject: PrintFactory RIP

Good Morning,

I will calibrate an Epson P20000 with PrintFactory RIP. Anybody has experience how is possible to indtroduce G7 curves in this RIP?

Thanks in advanced and Regards

Joan López

------------------------------
Joan Lopez
CTO
GPG Soluciones Graficas
Valdemoro
+34610463490
------------------------------

The subject is G7 use with Print Factory, a RIP for digital inkjet printers.

------------------------------
Mike Strickler
MSP Graphic Services
------------------------------

Original Message:
Sent: 03-22-2021 12:55 AM
From: Marco Ugolini
Subject: PrintFactory RIP

In case that was not clear, I was limiting my comments to printing on presses, though, Mike.

Sheetfed litho offset presses, specifically.

Cheers.

Marco Ugolini
Color and Print Specialist
Google LLC

Original Message:
Sent: 3/21/2021 1:39:00 AM
From: Mike Strickler
Subject: RE: PrintFactory RIP

Well, when its comes to digital print, the only surefire way to match color is with profiles, I'm afraid. You can apply G7 curves, but this still must be followed by profiling. All RIPs provide some form of ink-limiting and linearization to make output conducive to good profiling. Most do this without regard to gray balance, which is achieved by way of a profiled printer referencing a G7 source profile.

I believe there is widespread confusion on this point.

------------------------------
Mike Strickler
MSP Graphic Services

Original Message:
Sent: 03-20-2021 09:02 PM
From: Marco Ugolini
Subject: PrintFactory RIP

I wrote "the only one I know."

You may know others.

Regards.

Marco

Original Message:
Sent: 3/20/2021 2:23:00 AM
From: Mike Strickler
Subject: RE: PrintFactory RIP

Marco, my old friend,

I would soften that statement that a G7 calibration is "the only one" that can deliver consistent output independent of vendors, etc. I think it would be more accurate to say that G7 is a rational system, based on aligning grays, of improving the match among output from various CMYK(+N) print systems without resort to "3D" color management, i.e., profiling. For similar presses/screening/inks, it may be enough to assure extremely convincing matches, but profiling will always be required for an optimal match where ink color, paper type, and overprinting characteristics differ. In digital printing the variety of inks alone make profiling a practical necessity. In these cases, one might linearize a device using G7 calibration, as a convenience, perhaps, but it should not be assumed that other linearization schemes will provide an inferior base condition for excellent output profiles, and I would not want to suggest that Print Factory or any other RIP that has no provision for applying G7 curves is somehow deficient or unable to produce repeatable results, so long as a convenient relinearizing tool is included. I would add that INconvenient recalibration tools, whether using G7 or any other methodology, will tend not to be used, and in practice this is a far bigger issue than the exact method being applied.

Mike

------------------------------
Mike Strickler
MSP Graphic Services

Original Message:
Sent: 03-19-2021 11:40 AM
From: Marco Ugolini
Subject: PrintFactory RIP

Hi, Mathy.

I agree that G7 press calibration is a very useful tool to assure quality in print output.

It's actually the only one I know currently that can deliver on the promise of consistent output at scale and independently of vendor or location, when implemented with the requisite process quality controls.

But the foundation cannot be simply "the printing system in its default state".

That is just too non-specific: the first step has to be to establish CIELAB aimpoints for the solid values of primaries and overprints, and to match them as closely as feasible on the printed sheets.

Only after passing that verification should one then go on to create G7 Grayscale curves.

Without the step of what I call "G7 Solids Targeted verification" (which is not exactly what we know as "G7 Targeted", because it's likely to fail Grayscale), you will not achieve uniform results across different presses and vendors, or even with just one vendor.

Regards.

Marco Ugolini

Original Message:
Sent: 3/18/2021 12:13:00 PM
From: Mathy Green
Subject: RE: PrintFactory RIP

The G7 calibration process is fast and simple using any of
several G7 Certified software applications. First, with the
printing system in its normal default state,5
a standard
target–such as a P2P51–is printed then scanned on a
spectrophotometer. The software generates the curves
automatically. Once the curves are installed in the RIP,
the device is calibrated. Once a device is G7 calibrated,
a custom ICC profile can be created and used with
confidence
__________________________
Reliable Permit Solutions, LLC

------------------------------
Mathy Green
Manager
American Management Association
Bellerose NY

Original Message:
Sent: 12-10-2020 04:11 AM
From: Joan Lopez
Subject: PrintFactory RIP

Good Morning,

I will calibrate an Epson P20000 with PrintFactory RIP. Anybody has experience how is possible to indtroduce G7 curves in this RIP?

Thanks in advanced and Regards

Joan López

------------------------------
Joan Lopez
CTO
GPG Soluciones Graficas
Valdemoro
+34610463490
------------------------------

Original Message:
Sent: 3/22/2021 4:18:00 AM
From: Mike Strickler
Subject: RE: PrintFactory RIP

The subject is G7 use with Print Factory, a RIP for digital inkjet printers.

------------------------------
Mike Strickler
MSP Graphic Services
------------------------------

Original Message:
Sent: 03-22-2021 12:55 AM
From: Marco Ugolini
Subject: PrintFactory RIP

In case that was not clear, I was limiting my comments to printing on presses, though, Mike.

Sheetfed litho offset presses, specifically.

Cheers.

Marco Ugolini
Color and Print Specialist
Google LLC

Original Message:
Sent: 3/21/2021 1:39:00 AM
From: Mike Strickler
Subject: RE: PrintFactory RIP

Well, when its comes to digital print, the only surefire way to match color is with profiles, I'm afraid. You can apply G7 curves, but this still must be followed by profiling. All RIPs provide some form of ink-limiting and linearization to make output conducive to good profiling. Most do this without regard to gray balance, which is achieved by way of a profiled printer referencing a G7 source profile.

I believe there is widespread confusion on this point.

------------------------------
Mike Strickler
MSP Graphic Services

Original Message:
Sent: 03-20-2021 09:02 PM
From: Marco Ugolini
Subject: PrintFactory RIP

I wrote "the only one I know."

You may know others.

Regards.

Marco

Original Message:
Sent: 3/20/2021 2:23:00 AM
From: Mike Strickler
Subject: RE: PrintFactory RIP

Marco, my old friend,

I would soften that statement that a G7 calibration is "the only one" that can deliver consistent output independent of vendors, etc. I think it would be more accurate to say that G7 is a rational system, based on aligning grays, of improving the match among output from various CMYK(+N) print systems without resort to "3D" color management, i.e., profiling. For similar presses/screening/inks, it may be enough to assure extremely convincing matches, but profiling will always be required for an optimal match where ink color, paper type, and overprinting characteristics differ. In digital printing the variety of inks alone make profiling a practical necessity. In these cases, one might linearize a device using G7 calibration, as a convenience, perhaps, but it should not be assumed that other linearization schemes will provide an inferior base condition for excellent output profiles, and I would not want to suggest that Print Factory or any other RIP that has no provision for applying G7 curves is somehow deficient or unable to produce repeatable results, so long as a convenient relinearizing tool is included. I would add that INconvenient recalibration tools, whether using G7 or any other methodology, will tend not to be used, and in practice this is a far bigger issue than the exact method being applied.

Mike

------------------------------
Mike Strickler
MSP Graphic Services

Original Message:
Sent: 03-19-2021 11:40 AM
From: Marco Ugolini
Subject: PrintFactory RIP

Hi, Mathy.

I agree that G7 press calibration is a very useful tool to assure quality in print output.

It's actually the only one I know currently that can deliver on the promise of consistent output at scale and independently of vendor or location, when implemented with the requisite process quality controls.

But the foundation cannot be simply "the printing system in its default state".

That is just too non-specific: the first step has to be to establish CIELAB aimpoints for the solid values of primaries and overprints, and to match them as closely as feasible on the printed sheets.

Only after passing that verification should one then go on to create G7 Grayscale curves.

Without the step of what I call "G7 Solids Targeted verification" (which is not exactly what we know as "G7 Targeted", because it's likely to fail Grayscale), you will not achieve uniform results across different presses and vendors, or even with just one vendor.

Regards.

Marco Ugolini

Original Message:
Sent: 3/18/2021 12:13:00 PM
From: Mathy Green
Subject: RE: PrintFactory RIP

The G7 calibration process is fast and simple using any of
several G7 Certified software applications. First, with the
printing system in its normal default state,5
a standard
target–such as a P2P51–is printed then scanned on a
spectrophotometer. The software generates the curves
automatically. Once the curves are installed in the RIP,
the device is calibrated. Once a device is G7 calibrated,
a custom ICC profile can be created and used with
confidence
__________________________
Reliable Permit Solutions, LLC

------------------------------
Mathy Green
Manager
American Management Association
Bellerose NY

Original Message:
Sent: 12-10-2020 04:11 AM
From: Joan Lopez
Subject: PrintFactory RIP

Good Morning,

I will calibrate an Epson P20000 with PrintFactory RIP. Anybody has experience how is possible to indtroduce G7 curves in this RIP?

Thanks in advanced and Regards

Joan López

------------------------------
Joan Lopez
CTO
GPG Soluciones Graficas
Valdemoro
+34610463490
------------------------------

I think there must be near-universal support for G7 as a process control methodology for conventional printing with AM screens and typical CMYK press inks. This is a G7 forum, after all.

------------------------------
Mike Strickler
MSP Graphic Services
------------------------------

Original Message:
Sent: 03-22-2021 12:39 PM
From: Marco Ugolini
Subject: PrintFactory RIP

Understood, Mike, but my reference to printing on press remains, much as it may be off-topic.

Regards.

Original Message:
Sent: 3/22/2021 4:18:00 AM
From: Mike Strickler
Subject: RE: PrintFactory RIP

The subject is G7 use with Print Factory, a RIP for digital inkjet printers.

------------------------------
Mike Strickler
MSP Graphic Services

Original Message:
Sent: 03-22-2021 12:55 AM
From: Marco Ugolini
Subject: PrintFactory RIP

In case that was not clear, I was limiting my comments to printing on presses, though, Mike.

Sheetfed litho offset presses, specifically.

Cheers.

Marco Ugolini
Color and Print Specialist
Google LLC

Original Message:
Sent: 3/21/2021 1:39:00 AM
From: Mike Strickler
Subject: RE: PrintFactory RIP

Well, when its comes to digital print, the only surefire way to match color is with profiles, I'm afraid. You can apply G7 curves, but this still must be followed by profiling. All RIPs provide some form of ink-limiting and linearization to make output conducive to good profiling. Most do this without regard to gray balance, which is achieved by way of a profiled printer referencing a G7 source profile.

I believe there is widespread confusion on this point.

------------------------------
Mike Strickler
MSP Graphic Services

Original Message:
Sent: 03-20-2021 09:02 PM
From: Marco Ugolini
Subject: PrintFactory RIP

I wrote "the only one I know."

You may know others.

Regards.

Marco

Original Message:
Sent: 3/20/2021 2:23:00 AM
From: Mike Strickler
Subject: RE: PrintFactory RIP

Marco, my old friend,

I would soften that statement that a G7 calibration is "the only one" that can deliver consistent output independent of vendors, etc. I think it would be more accurate to say that G7 is a rational system, based on aligning grays, of improving the match among output from various CMYK(+N) print systems without resort to "3D" color management, i.e., profiling. For similar presses/screening/inks, it may be enough to assure extremely convincing matches, but profiling will always be required for an optimal match where ink color, paper type, and overprinting characteristics differ. In digital printing the variety of inks alone make profiling a practical necessity. In these cases, one might linearize a device using G7 calibration, as a convenience, perhaps, but it should not be assumed that other linearization schemes will provide an inferior base condition for excellent output profiles, and I would not want to suggest that Print Factory or any other RIP that has no provision for applying G7 curves is somehow deficient or unable to produce repeatable results, so long as a convenient relinearizing tool is included. I would add that INconvenient recalibration tools, whether using G7 or any other methodology, will tend not to be used, and in practice this is a far bigger issue than the exact method being applied.

Mike

------------------------------
Mike Strickler
MSP Graphic Services

Original Message:
Sent: 03-19-2021 11:40 AM
From: Marco Ugolini
Subject: PrintFactory RIP

Hi, Mathy.

I agree that G7 press calibration is a very useful tool to assure quality in print output.

It's actually the only one I know currently that can deliver on the promise of consistent output at scale and independently of vendor or location, when implemented with the requisite process quality controls.

But the foundation cannot be simply "the printing system in its default state".

That is just too non-specific: the first step has to be to establish CIELAB aimpoints for the solid values of primaries and overprints, and to match them as closely as feasible on the printed sheets.

Only after passing that verification should one then go on to create G7 Grayscale curves.

Without the step of what I call "G7 Solids Targeted verification" (which is not exactly what we know as "G7 Targeted", because it's likely to fail Grayscale), you will not achieve uniform results across different presses and vendors, or even with just one vendor.

Regards.

Marco Ugolini

Original Message:
Sent: 3/18/2021 12:13:00 PM
From: Mathy Green
Subject: RE: PrintFactory RIP

The G7 calibration process is fast and simple using any of
several G7 Certified software applications. First, with the
printing system in its normal default state,5
a standard
target–such as a P2P51–is printed then scanned on a
spectrophotometer. The software generates the curves
automatically. Once the curves are installed in the RIP,
the device is calibrated. Once a device is G7 calibrated,
a custom ICC profile can be created and used with
confidence
__________________________
Reliable Permit Solutions, LLC

------------------------------
Mathy Green
Manager
American Management Association
Bellerose NY

Original Message:
Sent: 12-10-2020 04:11 AM
From: Joan Lopez
Subject: PrintFactory RIP

Good Morning,

I will calibrate an Epson P20000 with PrintFactory RIP. Anybody has experience how is possible to indtroduce G7 curves in this RIP?

Thanks in advanced and Regards

Joan López

------------------------------
Joan Lopez
CTO
GPG Soluciones Graficas
Valdemoro
+34610463490
------------------------------