August 2016 - colorsync-users

profiling back-printed plexiglass?
by Randy Norian 12 Dec '16

12 Dec '16

Good afternoon! It’s quite likely that this has been covered before, however, I have to ask. We are attempting to print high quality images on the back face of clear plexiglass, with a white ink layer behind the image. The print engine in question is a Rastek H625 (by EFI) UV-cured inkjet. While I can color manage paper prints with this device, the backside-plexiglass printing has me stymied. The images are extremely bright and overly-contrasty, to the point of being unacceptable, especially as companion pieces to other latex work we’re doing. I thought I’d just characterize the output on the plexiglass, however my ES-2000 won’t read the swatches through the plexiglass, for whatever reason — it simply faults out. I’m using EFI color profiler suite 4.6. Have any of you faced the same issue? Any advice on how to go about color managing this sort of printing? I know I have to figure out how to read these swatches, but beyond that, are there any caveats for working with "back side of glass” printing? Many thanks- Randy Norian

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Re: Coca Cola Red
by Henry Davis 15 Aug '16

15 Aug '16

Coke Red has always been "Coke Red" - a custom spot color. The company has swatch standards that can be obtained (thru Coke USA). Most inksets cannot match this color - you'll find that Coke has a range that it finds acceptable. Obtaining a signed proof is advisable. Henry Davis > > > Message: 3 > Date: Sat, 13 Aug 2016 12:53:38 -0400 > From: Roger Breton <graxx(a)videotron.ca> > To: "'Xavi y Dani de Haut Touch'" <haut_touch(a)me.com>, "'Randy > Norian'" <rg500delta(a)mac.com> > Cc: 'Colorsync Users list' <colorsync-users(a)lists.apple.com> > Subject: RE: Coca Cola red? > Message-ID: <013f01d1f583$3deb5990$b9c20cb0$(a)videotron.ca> > Content-Type: text/plain; charset=UTF-8 > > "According to a record at the United States Patent and Trademark > Office there is a ‘Coke Red’ defined as Pantone 484." > > I wonder whether that's still the case, Xavi. > > / Roger

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Coca Cola red?
by Randy Norian 14 Aug '16

14 Aug '16

Good Afternoon! I have the opportunity to do some work with a local Coca Cola distributor- so I asked for their red color definition. I’m keen to dial in the printers that will be doing their work for the most accurate reproduction of their corporate color. They gave me the red color definition in cmyk (4,100,95,0) , RGB (177, 0 25) , and hex (F40000) , with “no Pantone equivalent” With the absence of any Lab data, my thought is to just assume a CMYK source of GRACoL and derive Lab numbers from there - but surely, someone has prior experience with Coca Cola- have any of you worked with an official Lab definition of Coke red? Many thanks- Randy N

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RE: Coca Cola red?
by Roger Breton 14 Aug '16

14 Aug '16

Thank you John! / Roger -----Original Message----- From: colorsync-users-bounces+graxx=videotron.ca(a)lists.apple.com [mailto:colorsync-users-bounces+graxx=videotron.ca@lists.apple.com] On Behalf Of Jon Meyer Sent: Saturday, August 13, 2016 9:41 PM To: Randy Norian <rg500delta(a)mac.com> Cc: Colorsync Users list <colorsync-users(a)lists.apple.com> Subject: Re: Coca Cola red? I just learned from a top guy with Coke, that they specify none of the Pantones or CMYK recipes any longer. They use a proprietary Lab value. Because service providers must be cleared first, that custom value is not available to the general market. Jon Sent from my iPhone > On Aug 12, 2016, at 1:30 PM, Randy Norian <rg500delta(a)mac.com> wrote: > > Good Afternoon! > > I have the opportunity to do some work with a local Coca Cola distributor- so I asked for their red color definition. I’m keen to dial in the printers that will be doing their work for the most accurate reproduction of their corporate color. > > They gave me the red color definition in cmyk (4,100,95,0) , RGB (177, 0 25) , and hex (F40000) , with “no Pantone equivalent” > > With the absence of any Lab data, my thought is to just assume a CMYK source of GRACoL and derive Lab numbers from there - but surely, someone has prior experience with Coca Cola- have any of you worked with an official Lab definition of Coke red? > > Many thanks- > > Randy N > > > > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Colorsync-users mailing list (Colorsync-users(a)lists.apple.com) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/colorsync-users/jonmeyer%40grafixge… > > This email sent to jonmeyer(a)grafixgear.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Colorsync-users mailing list (Colorsync-users(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/colorsync-users/graxx%40videotron.ca This email sent to graxx(a)videotron.ca

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RE: Coca Cola red?
by Roger Breton 13 Aug '16

13 Aug '16

"According to a record at the United States Patent and Trademark Office there is a ‘Coke Red’ defined as Pantone 484." I wonder whether that's still the case, Xavi. / Roger -----Original Message----- From: colorsync-users-bounces+graxx=videotron.ca(a)lists.apple.com [mailto:colorsync-users-bounces+graxx=videotron.ca@lists.apple.com] On Behalf Of Xavi y Dani de Haut Touch Sent: Saturday, August 13, 2016 5:10 AM To: Randy Norian <rg500delta(a)mac.com> Cc: Colorsync Users list <colorsync-users(a)lists.apple.com> Subject: Re: Coca Cola red? Hello Randy We did some works for Coca Cola and as far as I remember their red is a Pantone 185C or 485C. See this post for further info https://brandcreation.wordpress.com/tag/coca-cola/ Thanks Xavi Carreras Haut Touch BARCELONA Sent from my iPhone > On 12 Aug 2016, at 19:30, Randy Norian <rg500delta(a)mac.com> wrote: > > Good Afternoon! > > I have the opportunity to do some work with a local Coca Cola distributor- so I asked for their red color definition. I’m keen to dial in the printers that will be doing their work for the most accurate reproduction of their corporate color. > > They gave me the red color definition in cmyk (4,100,95,0) , RGB (177, 0 25) , and hex (F40000) , with “no Pantone equivalent” > > With the absence of any Lab data, my thought is to just assume a CMYK source of GRACoL and derive Lab numbers from there - but surely, someone has prior experience with Coca Cola- have any of you worked with an official Lab definition of Coke red? > > Many thanks- > > Randy N > > > > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Colorsync-users mailing list (Colorsync-users(a)lists.apple.com) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/colorsync-users/haut_touch%40me.com > > This email sent to haut_touch(a)me.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Colorsync-users mailing list (Colorsync-users(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/colorsync-users/graxx%40videotron.ca This email sent to graxx(a)videotron.ca

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Colorhythm Institute
by Jeff Nova 09 Aug '16

09 Aug '16

Greetings all, The Colorhythm Institute features events and classes on color science, in addition to other related imaging fields that we believe will be of interest to this community. As some know, we announced a class on spectrometry with Robin Myers, the inventor of ColorSync, last month, and will continue with more programming in that vein. Our aim is to provide an advanced level of education only possible in universities until now, and to make that available to the general public. Feel free to keep in touch on our site at http://colorhythm.institute or on Facebook at https://www.facebook.com/colorhythminstitute/ We look forward to hearing from you! Very best, Jeff -- Jeff NovaChief Executive OfficerColorhythm jnova(a)colorhythm.comMain: +1 415-399-9921Mobile: +1 510-710-9590Fax: +1 415-399-9928 1015 Battery Street, Suite CSan Francisco CA 94111http://colorhythm.com This electronic mail and the documents accompanying it are considered trade secret, confidential and/or proprietary by Colorhythm LLC. This information is intended for use by the individual or entity to whom this e-mail is addressed. If you are not the intended recipient, be aware that any disclosure, copying, distribution or use of the contents of this information is prohibited.

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Re: CProcessing bulk measurement data
by Paul Sherfield 03 Aug '16

03 Aug '16

Hi Terry I find Color Logics ColorAnt software very good in this area. Paul Sherfield Please note my mobile is now my main contact number: Mobile: + 44 7899 906385 http://www.missinghorsecons.co.uk http://twitter.com/#!/missinghorse Apple Solutions Expert - Print & Publishing Member - UK TC130 Technical Advisory Group (ISO 12647 Printing Standards) UK Expert: ISO TC130/Working Group 13 on certification of printing standards Chair BPIF UK ISO 12647 Certification Steering Group Lean and green? To save money and become a greener printer, see http://www.greenprinter.co.uk This email and any attachments may be confidential and are intended solely for the use of addressee. If you are not the intended recipient of this message, any disclosure, copying or other distribution is strictly prohibited and may be unlawful. If you have received this message in error, please notify the sender and delete all copies from your system. Email may be susceptible to data corruption, interception and unauthorised amendment. We do not accept liability for any such corruption, interception or amendment or the consequences thereof. We do not accept liability for any action or inaction by the recipient as a result of advice or information contained within this email. -----

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Processing bulk measurement data
by Terence Wyse 02 Aug '16

02 Aug '16

Hello all, Looking for recommendations on software that can process fairly large amounts of measurement data (10-50+ data sets) with the purpose coming up with the optimal data set. Currently doing this in Excel which is painful. Some of the specific features I’m looking for: Import or drag/drop a set of measurements, process the AVERAGE of the set but also highlight data outliers that should not be included. Import or drag/drop a set of measurements, process the MEDIAN of the set but also show data outliers that should not be included. It should be able to do either of the functions above on a patch-by-patch basis rather than including/excluding the entire data set(s). Ideally the tool would use a CRF (cumlative relative frequency)-like method of displaying the data and the outliers…..and then un-check the outliers either manually or based on metrics (dE threshold)…and then produce a final data set. This isn’t necessarily for the purpose of profiling but more creating an ideal set of reference measurements for a fleet of devices. ColorLogic’s ColorANT and basICColor’s IMprove look promising but seem to lack a few features I’m looking for. BabelColor Patch tool may offer something as well but I’m unsure. Vendors of any of these products feel free to contact me. Regards, Terry Wyse

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