Re: "Pantone Process" Inks
Re: "Pantone Process" Inks
- Subject: Re: "Pantone Process" Inks
- From: Mark Stegman <email@hidden>
- Date: Tue, 08 Mar 2016 21:48:32 +0000
Jorge,
If you have a current PANTONE Bridge swatch book you will find the details
of the CMYK printing conditions on one of the flaps. The CMYK values they
provide are specified very precisely and reference ISO 12647-2 and ISO
2846-1. They include screen angles, screen frequency (175 l.p.i.) and dots
shapes amongst other parameters. This means that the CMYK values 'equate'
to a very specific but achievable colour space for the average, ISO
standards-based print production line.
Mark
On Tue, 8 Mar 2016 at 23:32 Jorge . <email@hidden> wrote:
> > It's hard to say where customers get these ideas,
>
> Well, not that long ago Pantone spot libraries came with a reading
> below each patch stating a purported equivalence to a fixed CMYK mix.
> And then people learn about color management and learn that colors are
> objectively represented by Lab coordinates, not CMYK mixes, since
> different CMYK inks actually produce different colors. I do not
> consider it a long stretch that someone interprets that the CMYK inks
> being referenced in Pantone spot libraries must then somehow be some
> specific ones guaranteed by Pantone to meet a certain standard, or
> even inks made by Pantone and only Pantone.
>
>
> On Tue, Mar 8, 2016 at 10:04 AM, Mike Strickler <email@hidden>
> wrote:
> > It's hard to say where customers get these ideas, but we haven't as an
> industry been very successful at communicating about color to others. One
> could even say that it is not helpful that the current Pantone libraries
> still include a "Pantone Black" and a "Pantone Yellow" that are not ISO
> 12647 colors at all (the yellow being especially different). But perhaps
> that's no worse than changing the Lab specs if not the composition of base
> mixing colors (e.g., Reflex Blue, Rubine Red) and colors mixed from them
> while leaving their names unchanged. I recently became aware of a very
> large discrepancy between the Lab values in the database for Pantone solid
> colors of a large ink company and those in any of the last three versions
> of the Pantone Solid libraries. Where did the ink company get those values?
> Nobody seems to remember.
> >
> > This is the world we inhabit.
> >
> > Mike Strickler
> > MSP Graphic Services
> >
> >
> >>
> >> Message: 2
> >> Date: Mon, 07 Mar 2016 15:18:05 -0500
> >> From: Michael Eddington <email@hidden>
> >> To: Todd Shirley <email@hidden>
> >> Cc: "'colorsync-users?lists.apple.com' List"
> >> <email@hidden>
> >> Subject: Re: "Pantone Process" Inks
> >> Message-ID:
> >> <
> email@hidden>
> >> Content-Type: text/plain; charset=UTF-8
> >>
> >> Your interpretation is correct…Pantone CMYK primaries are governed under
> >> ISO 2846-1.
> >>
> >>
> http://www.pantone.com/help/?t=CMYK-Primaries-not-found-in-PANTONE-FORMULA-GUIDE-and-PANTONE-SOLID-CHIPS
> >>
> >
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