I would like to find an obnoxiously strong optically brightened inkjet paper to conduct color separations experiments using M1 colorimetry, on an Epson printer. Last time, I used Epson Doubleweight Matte paper for this purpose which was around : CIE b* = - 9.00 to -10.00, give or take. (Lost the measurement files…) I was up on Epson web site, earlier, looking for “specs” for that very paper but could not find anything “useful”, to give me some indication of the degree of optical brightening ☹. I eventually landed on this page : https://epson.com/For-Work/Paper/Presentation/Doubleweight-Matte-Paper/m/S04... Sadly (big sigh!), Epson does not offer any “numbers” on their web site for their papers, not that I’ve seen, other than, possibly, “ISO Brightness”. I don’t suppose one could go from “ISO Brightness = 84%” to anything remotely useful for colorimetry? Epson “Enhanced Matte Paper”, on the other hand : https://epson.com/For-Work/Paper/Presentation/Enhanced-Matte-Paper/m/S041725 seems to suggest higher OB content than Doubleweight Matte, with ISO Brightness = 104%? Still, no mention of measured substrate (unprinted media) color…. A quick trip down the C:\Windows\...\color directory on my Dell computer turns out the following Epson ICC profile (installed by the driver for the Epson SureColor P5000 printer): SC-P5000_Series_LLK EnhancedMattePaper_PK.icc According to this ICC profile (ICC Profile Inspector.exe), White Point is : CIE XYZ = 88.13 91.68 75.38 or CIE Lab = 96.69 -0.47 0.21 Seems dubious, at best? CIE b* should be way more “negative” than this? Hate to ask but would anyone have “real” CIE Lab measurements (farbmessung) for this paper? Thanks for your patience and help. Best / Roger
On 18 Jun 2019, at 21:57, Roger Breton via colorsync-users <colorsync-users@lists.apple.com> wrote:
Hate to ask but would anyone have “real” CIE Lab measurements (farbmessung) for this paper? Thanks for your patience and help.
Roger Ernst Dinkla’s SpectrumViz has measurements for loads of inkjet papers: <http://www.pigment-print.com/spectralplots/spectrumviz_1.htm> Requires JRE to run. Cheers -- Martin Orpen Idea Digital Imaging Ltd
I have measured some papers and published their CIECAM02 colorimetric values on my Chromaxion website at http://chromaxion.com/information/fine_art_paper.html <http://chromaxion.com/information/fine_art_paper.html>. Some have bc values over -17. Robin Myers Imaging robin@rmimaging.com robin@chromaxion.com
On 18 Jun 2019, at 13:57, Roger Breton via colorsync-users <colorsync-users@lists.apple.com> wrote:
I would like to find an obnoxiously strong optically brightened inkjet paper to conduct color separations experiments using M1 colorimetry, on an Epson printer. Last time, I used Epson Doubleweight Matte paper for this purpose which was around :
CIE b* = - 9.00 to -10.00, give or take. (Lost the measurement files…)
I was up on Epson web site, earlier, looking for “specs” for that very paper but could not find anything “useful”, to give me some indication of the degree of optical brightening ☹. I eventually landed on this page :
https://epson.com/For-Work/Paper/Presentation/Doubleweight-Matte-Paper/m/S04...
Sadly (big sigh!), Epson does not offer any “numbers” on their web site for their papers, not that I’ve seen, other than, possibly, “ISO Brightness”. I don’t suppose one could go from “ISO Brightness = 84%” to anything remotely useful for colorimetry?
Epson “Enhanced Matte Paper”, on the other hand : https://epson.com/For-Work/Paper/Presentation/Enhanced-Matte-Paper/m/S041725 seems to suggest higher OB content than Doubleweight Matte, with ISO Brightness = 104%? Still, no mention of measured substrate (unprinted media) color….
A quick trip down the C:\Windows\...\color directory on my Dell computer turns out the following Epson ICC profile (installed by the driver for the Epson SureColor P5000 printer):
SC-P5000_Series_LLK EnhancedMattePaper_PK.icc
According to this ICC profile (ICC Profile Inspector.exe), White Point is :
CIE XYZ = 88.13 91.68 75.38 or
CIE Lab = 96.69 -0.47 0.21
Seems dubious, at best? CIE b* should be way more “negative” than this?
Hate to ask but would anyone have “real” CIE Lab measurements (farbmessung) for this paper? Thanks for your patience and help.
Best / Roger
_______________________________________________ Do not post admin requests to the list. They will be ignored. colorsync-users mailing list (colorsync-users@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/colorsync-users/robin%40rmimaging.co...
This email sent to robin@rmimaging.com
Hi Roger, https://www.felix-schoeller.com/en_en/business-unit/photographic-digital-pri... Above is the link to Felix Schoeller's FOGRA52-complaint proofing substrates that have been certified by FOGRA. They all appear on the certified proofing substrate database of FOGRA. https://www.fogra.org/plugin.php?Firma_105=schoeller&Substrat_106=&Papiertyp... 6 papers are listed, namely TRUST P22150, P22170, P22200, P22230, P51910 and P51210, but actually they are two papers at different weights, one at 4 and the other at 2. P22XXXs are the same paper at 150,170, 200 and gsm and P51XXXs are the same paper at 195 and 245 gsm. They all have a b*(M1) value of -10. Best, Refik Telhan Light and Color Management Consultancy ------------------ On 18.06.2019 23:58, "colorsync-users on behalf of Roger Breton via colorsync-users" <colorsync-users-bounces+rtelhan=icloud.com@lists.apple.com on behalf of colorsync-users@lists.apple.com> wrote: I would like to find an obnoxiously strong optically brightened inkjet paper to conduct color separations experiments using M1 colorimetry, on an Epson printer. Last time, I used Epson Doubleweight Matte paper for this purpose which was around : CIE b* = - 9.00 to -10.00, give or take. (Lost the measurement files…) I was up on Epson web site, earlier, looking for “specs” for that very paper but could not find anything “useful”, to give me some indication of the degree of optical brightening ☹. I eventually landed on this page : https://epson.com/For-Work/Paper/Presentation/Doubleweight-Matte-Paper/m/S04... Sadly (big sigh!), Epson does not offer any “numbers” on their web site for their papers, not that I’ve seen, other than, possibly, “ISO Brightness”. I don’t suppose one could go from “ISO Brightness = 84%” to anything remotely useful for colorimetry? Epson “Enhanced Matte Paper”, on the other hand : https://epson.com/For-Work/Paper/Presentation/Enhanced-Matte-Paper/m/S041725 seems to suggest higher OB content than Doubleweight Matte, with ISO Brightness = 104%? Still, no mention of measured substrate (unprinted media) color…. A quick trip down the C:\Windows\...\color directory on my Dell computer turns out the following Epson ICC profile (installed by the driver for the Epson SureColor P5000 printer): SC-P5000_Series_LLK EnhancedMattePaper_PK.icc According to this ICC profile (ICC Profile Inspector.exe), White Point is : CIE XYZ = 88.13 91.68 75.38 or CIE Lab = 96.69 -0.47 0.21 Seems dubious, at best? CIE b* should be way more “negative” than this? Hate to ask but would anyone have “real” CIE Lab measurements (farbmessung) for this paper? Thanks for your patience and help. Best / Roger _______________________________________________ Do not post admin requests to the list. They will be ignored. colorsync-users mailing list (colorsync-users@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/colorsync-users/rtelhan%40icloud.com This email sent to rtelhan@icloud.com
participants (4)
-
graxx＠videotron.ca
-
Martin Orpen
-
Refik Telhan
-
Robin Myers