Can this be true: spectro quality printer profiles with this software and a scanner.....???

[pharmacist]

https://www.ddisoftware.com/printprism/

This would a revolution when we can generate printer profiles without a reference chart and only a software package of $34.95.....

It says even better printer profiles than a hand scanned spectro.....

 

[Ink stained Fingers]

This would a revolution when we can generate printer profiles without a reference chart and only a software package of $34.95.....

It's the sacnner which is the reference via a kind of scanner profile - assuming that all scanners of the same type read the same data, and the range of scanners appears to be very low at this time

Supported scanner models​

Epson ET-8550

• Epson ET-8500
• Epson L8160
• Epson L8180
• Canon G600 Series (G610–G695)

Pre-characterized scanner response​

Print Prism uses proprietary spectral response data for each supported scanner model, effectively turning it into a makeshift measurement device for reading color patches— without the cost and hassle of a handheld spectrophotometer.

(As copied from the Print Prism posting)

 

[The Hat]

It says even better printer profiles than a hand scanned spectro.....

Funny you should mention Profiles on a Scanner..

I had an Epson GT 7000 scanner many moons ago that came with software for profiling both scanner and Epson printers, I did use it to get some good profiles but it fall out of favour for my lack of interest.

Profiling for me became a waste of time because things change so quickly when using inkjet printers, the prints fade whether or not you profile them..

 

[pharmacist]

I am a bit puzzled: how can you know the colors scanned with the ET-8550 is the right one if there is no reference to compare to ?

I had to make a custom scanner target for my Epson ET-8550 with my vintage i1Pro1 and the iMatch software: using a target that I scanned with both the ET-8550 flat bed scanner and then using the i1pro1 scanning the patches to determine the LAB valules of the patches and then iMatch calculates the scanner profile by comparing the obtained scanner datat with the i1Pro1 data from the reference target.

 

[edmundronald]

If the

I am a bit puzzled: how can you know the colors scanned with the ET-8550 is the right one if there is no reference to compare to ?

I had to make a custom scanner target for my Epson ET-8550 with my vintage i1Pro1 and the iMatch software: using a target that I scanned with both the ET-8550 flat bed scanner and then using the i1pro1 scanning the patches to determine the LAB valules of the patches and then iMatch calculates the scanner profile by comparing the obtained scanner datat with the i1Pro1 data from the reference target.

If the scanner is factory-characterized . And the ink is known.

 

[Epatcola]

I am a bit puzzled: how can you know the colors scanned with the ET-8550 is the right one if there is no reference to compare to ?

Most people are supposed to make do with manufacturer or 3rd party created print profiles. Profiles not created with their specific printer, paper, or inks.

I would imagine there is much lower probability of variation between scanners.

I have no idea how much better a spectrophotometer rather than RGB scanner created profiles are.

 

[pharmacist]

If the

If the scanner is factory-characterized . And the ink is known.

Ink can differ slightly from batch to batch and colour drifting can happen over time. The reason why you will need to calibrate the white point every time before scanning the patches......how do you calibrate a scanner before scanning the patches ???

 

[edmundronald]

Ink can differ slightly from batch to batch and colour drifting can happen over time. The reason why you will need to calibrate the white point every time before scanning the patches......how do you calibrate a scanner before scanning the patches ??

The general problem is doubtless ugly; when some parameters are roughly known by the factory, I guess you get some results which are sufficient for most people's use. Think of the scanner as a digital camera with some added lights.

If you're truly desperate, you can make a color target made out of various materials.The target need only be read once by a spectro -a friend of mine got a Barbieri for this, they're wonderful things for fine arts because they will measure anything-, and then you quietly derive your scanner's spectral response from reading that target.

There's no real science here, just practical application, and sometimes you get lucky and it works. At least I assume so, as you can see I'm not the smartest knife in the box.

Edmund