Re: "Pantone Process" Inks
Re: "Pantone Process" Inks
- Subject: Re: "Pantone Process" Inks
- From: MIke Strickler <email@hidden>
- Date: Tue, 08 Mar 2016 14:52:58 -0800
Sure, the information is available, but it's hardly prominent. Second, saying that the builds represent what will achieve the target Lab values makes some very large assumptions about actual process control, which is the major cause of disappointment in such jobs, followed perhaps by the effect of differently colored substrates on the results.
Mike Strickler
MSP Graphic Services
> On Mar 8, 2016, at 1:48 PM, Mark Stegman <email@hidden> wrote:
>
> 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
>> >>
>> >
>> > _______________________________________________
>> > Do not post admin requests to the list. They will be ignored.
>> > Colorsync-users mailing list (email@hidden)
>> > Help/Unsubscribe/Update your Subscription:
>> >
>> > This email sent to email@hidden
>>
>> _______________________________________________
>> Do not post admin requests to the list. They will be ignored.
>> Colorsync-users mailing list (email@hidden)
>> Help/Unsubscribe/Update your Subscription:
>>
>> This email sent to email@hidden
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden