May 2014 - colorsync-users - lists.apple.com

How does your CMF look like? Invitation for softproof and colour experts around munich and Darmstadt
by Peter Karp 28 May '14

28 May '14

Dear softproof experts, Fogra will start in June with a new softproof research project. We are now planing the first experiments. In cooperation with Fraunhofer Institute Darmstadt, Technicolor France and caddon we will conduct exciting experiments where you can get an estimation of your individual color matching functions and where we will have a look into observer metamerism when viewing displays. There are some places left and if you like to participate in the experiments please contact me soon. Experiments ----------- a) Observer classification and estimation of your individual color matching function (CMF) b) additional accompanying softproof experiment Locations --------- Munich, 10th June - 13th June Darmstadt, 16th June - 20th June (19th being a holiday) Timeframe --------- plan about 2 hours for the experiments (including needed pauses) You can contact me off-list to agree on a place, date and time for you to participate. We are looking forward a captivating experience. Best regards Peter Karp -- Follow us on Twitter: English channel: https://twitter.com/fogra_org Deutscher Kanal: https://twitter.com/fogra_de Dipl.-Ing. [FH] Peter Karp Abt. Vorstufe Fogra Forschungsgesellschaft Druck e.V. Streitfeldstraße 19 81673 München Telefon: +49 89. 431 82 - 334 Telefax: +49 89. 431 82 - 100 E-mail: karp(a)fogra.org Internet: www.fogra.org

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Re: Colorsync-users Digest, Vol 11, Issue 52
by Benito Hernandez 21 May '14

21 May '14

Remove me from the list Sent from my iPhone > On May 18, 2014, at 2:00 PM, colorsync-users-request(a)lists.apple.com wrote: > > Send Colorsync-users mailing list submissions to > colorsync-users(a)lists.apple.com > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.apple.com/mailman/listinfo/colorsync-users > or, via email, send a message with subject or body 'help' to > colorsync-users-request(a)lists.apple.com > > You can reach the person managing the list at > colorsync-users-owner(a)lists.apple.com > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Colorsync-users digest..." > > > Today's Topics: > > 1. Looking for advice about DeviceN and DeviceGray (Brian Lawler) > 2. Re: Looking for advice about DeviceN and DeviceGray > (Olaf Drümmer) > 3. Re: Looking for advice about DeviceN and DeviceGray > (edward taffel) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sun, 18 May 2014 06:35:10 -0700 > From: Brian Lawler <brian(a)thelawlers.com> > To: colorsync-users(a)lists.apple.com > Subject: Looking for advice about DeviceN and DeviceGray > Message-ID: <21EF54F9-F6B5-42C7-B9D8-FC791CFDD6E5(a)thelawlers.com> > Content-Type: text/plain; charset=us-ascii > > Hello, fellow color synkers, > > I encountered a problem yesterday with a project produced using offset lithography on a Kodak Trendsetter platesetter and Prinergy prepress software. > > The project involved placing two PDF files produced elsewhere into an InDesign layout, and creating a PDF for output. > > This is a black-only job. > > The placed PDF files are monochrome in appearance, and were not created as RGB graphics. > > In the finished PDF, the graphics appear normal, and in the Print Production>Output Preview palette in Acrobat, these graphic appear only on the black plate. There is no "rich black." > > But when we render these files to the Trendsetter, the graphics disappear. > > On closer examination in Output Preview, using the Object Inspector, these graphics are all showing as either DeviceGray or DeviceN colors. > > After this happened, I returned to Acrobat Pro, and using PitStop Professional 12, did a batch conversion using one of the stock functions, that being "Clean up Black". > > This resulted in every object being converted from its original DeviceGray or DeviceN color to a value of gray in DeviceCMYK. And, once this was done, the PDFs imaged fine on the black plate. > > And, life is good again. > > My question, then, is when items appear on the Black plate, and are viewed there, but then subsequently disappear from the plate, what is the problem? > > I acknowledge that this may be a Prinergy question, but I thought I would pose it to the ColorSync team to get your ideas. > > Thank you, and have a great day, > > Brian P. Lawler > > > > > ------------------------------ > > Message: 2 > Date: Sun, 18 May 2014 16:46:32 +0200 > From: Olaf Drümmer <olaflist(a)callassoftware.com> > To: Brian Lawler <brian(a)thelawlers.com> > Cc: colorsync-users(a)lists.apple.com > Subject: Re: Looking for advice about DeviceN and DeviceGray > Message-ID: <8E8017AE-F6B0-4AE2-8649-DCBEEBE8C5DC(a)callassoftware.com> > Content-Type: text/plain; charset=us-ascii > > Hi Brian, > > I really think this is a Prinergy problem. > > But one question before I get into any details: > - did you save the file destined for output on the plate setter as a PDF/X file? If not, why not? If yes, what output intent did you set? > In general, Acrobat Output Preview is highly reliable when trying to find out what marks are made on which plate. > > Furthermore, there are all kinds of ways > - to have gotten the source material created/saved/exported inadequately > - to get the export to PDF setup in InDesign wrong > Without the source and final files at hand it;'s difficult to tell though. > > In general, there are several ways to express marks on just the black channel (assuming output mode is to CMYK, numbers given below serve as an example for 100% black): > - 0.0 DeviceGray > - 1.0 Separation Black > - 0 / 0 / 0 / 1.0 DeviceCMYK > - DeviceN with 1 colorant "Black", value 1.0 > - DeviceN with 2 or more colorants, including 1 colorant "Black", value 1.0, other colorant(s) "None" or named colorants set to 0.0 > Creating applications sometimes pick whatever is most suitable to get the job done. In the context of imaging to a plate setter this often has to do with overprint. > > HTH. > > Olaf > > >> On 18 May 2014, at 15:35, Brian Lawler <brian(a)thelawlers.com> wrote: >> >> Hello, fellow color synkers, >> >> I encountered a problem yesterday with a project produced using offset lithography on a Kodak Trendsetter platesetter and Prinergy prepress software. >> >> The project involved placing two PDF files produced elsewhere into an InDesign layout, and creating a PDF for output. >> >> This is a black-only job. >> >> The placed PDF files are monochrome in appearance, and were not created as RGB graphics. >> >> In the finished PDF, the graphics appear normal, and in the Print Production>Output Preview palette in Acrobat, these graphic appear only on the black plate. There is no "rich black." >> >> But when we render these files to the Trendsetter, the graphics disappear. >> >> On closer examination in Output Preview, using the Object Inspector, these graphics are all showing as either DeviceGray or DeviceN colors. >> >> After this happened, I returned to Acrobat Pro, and using PitStop Professional 12, did a batch conversion using one of the stock functions, that being "Clean up Black". >> >> This resulted in every object being converted from its original DeviceGray or DeviceN color to a value of gray in DeviceCMYK. And, once this was done, the PDFs imaged fine on the black plate. >> >> And, life is good again. >> >> My question, then, is when items appear on the Black plate, and are viewed there, but then subsequently disappear from the plate, what is the problem? >> >> I acknowledge that this may be a Prinergy question, but I thought I would pose it to the ColorSync team to get your ideas. >> >> Thank you, and have a great day, >> >> Brian P. Lawler >> >> >> _______________________________________________ >> 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/olaflist%40callasso… >> >> This email sent to olaflist(a)callassoftware.com > > > > > ------------------------------ > > Message: 3 > Date: Sun, 18 May 2014 11:39:13 -0400 > From: edward taffel <etaffel(a)me.com> > To: Brian Lawler <brian(a)thelawlers.com> > Cc: colorsync-users(a)lists.apple.com > Subject: Re: Looking for advice about DeviceN and DeviceGray > Message-ID: <8C124D34-A005-443F-A945-778317366E4F(a)me.com> > Content-Type: text/plain; charset=windows-1252 > > hello brian, > > when you say ‘black-only’ & rich black in the same context, i surmise the intention is to produce a single spot plate job, & i expect the spot color (a PMS color?) is characterized by DeviceN. a rich black by definition when specified in cmyk has other color components besides black [k]: it seems likely your ‘clean up black’ operation either > > a) utilized the DeviceN alternate space [the space intended for rendering to process-color only devices, e.g. a display] & coordinates to produce the four-color job—unlikely what the client intended, as setup cost is now quadrupled; or > > b) dumped the rich black altogether—in which case you can still print from the k plate, but w/ potentially undesired result. > > i should not have expected to see DeviceGray in this job, but there may be creatively valid reasons for this. you should preflight the file to be sure what black your printing. > > hope this helps, > edward taffel > > >> On May 18, 2014, at 9:35 AM, Brian Lawler <brian(a)thelawlers.com> wrote: >> >> Hello, fellow color synkers, >> >> I encountered a problem yesterday with a project produced using offset lithography on a Kodak Trendsetter platesetter and Prinergy prepress software. >> >> The project involved placing two PDF files produced elsewhere into an InDesign layout, and creating a PDF for output. >> >> This is a black-only job. >> >> The placed PDF files are monochrome in appearance, and were not created as RGB graphics. >> >> In the finished PDF, the graphics appear normal, and in the Print Production>Output Preview palette in Acrobat, these graphic appear only on the black plate. There is no "rich black." >> >> But when we render these files to the Trendsetter, the graphics disappear. >> >> On closer examination in Output Preview, using the Object Inspector, these graphics are all showing as either DeviceGray or DeviceN colors. >> >> After this happened, I returned to Acrobat Pro, and using PitStop Professional 12, did a batch conversion using one of the stock functions, that being "Clean up Black". >> >> This resulted in every object being converted from its original DeviceGray or DeviceN color to a value of gray in DeviceCMYK. And, once this was done, the PDFs imaged fine on the black plate. >> >> And, life is good again. >> >> My question, then, is when items appear on the Black plate, and are viewed there, but then subsequently disappear from the plate, what is the problem? >> >> I acknowledge that this may be a Prinergy question, but I thought I would pose it to the ColorSync team to get your ideas. >> >> Thank you, and have a great day, >> >> Brian P. Lawler >> >> >> _______________________________________________ >> 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/etaffel%40me.com >> >> This email sent to etaffel(a)me.com > > > > > ------------------------------ > > _______________________________________________ > Colorsync-users mailing list > Colorsync-users(a)lists.apple.com > https://lists.apple.com/mailman/listinfo/colorsync-users > > End of Colorsync-users Digest, Vol 11, Issue 52 > ***********************************************

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Looking for advice about DeviceN and DeviceGray
by Brian Lawler 18 May '14

18 May '14

Hello, fellow color synkers, I encountered a problem yesterday with a project produced using offset lithography on a Kodak Trendsetter platesetter and Prinergy prepress software. The project involved placing two PDF files produced elsewhere into an InDesign layout, and creating a PDF for output. This is a black-only job. The placed PDF files are monochrome in appearance, and were not created as RGB graphics. In the finished PDF, the graphics appear normal, and in the Print Production>Output Preview palette in Acrobat, these graphic appear only on the black plate. There is no "rich black." But when we render these files to the Trendsetter, the graphics disappear. On closer examination in Output Preview, using the Object Inspector, these graphics are all showing as either DeviceGray or DeviceN colors. After this happened, I returned to Acrobat Pro, and using PitStop Professional 12, did a batch conversion using one of the stock functions, that being "Clean up Black". This resulted in every object being converted from its original DeviceGray or DeviceN color to a value of gray in DeviceCMYK. And, once this was done, the PDFs imaged fine on the black plate. And, life is good again. My question, then, is when items appear on the Black plate, and are viewed there, but then subsequently disappear from the plate, what is the problem? I acknowledge that this may be a Prinergy question, but I thought I would pose it to the ColorSync team to get your ideas. Thank you, and have a great day, Brian P. Lawler

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