Re: [ECI-EN] Trying to understand the motivation of FOGRA

Dear Mr Engqvist, there is no new standard introduced by us. The situation is as follows: Non-periodical screenings do produce higher tone value increase than AM-Screenings. That could be compensated by RIP-curves. Although we do not recommend compensations of 10% or more (because of former researches) this would be possible. The ISO 12647-2 CIELAB values for the solids can be reached in both, Am and NP screenings. But NP screenings do show different CIELAB- values between 0% and solids which cannot be corrected by Rip-curves. Therefore NP is a different printing condition than AM. That means that the separation for products printed with NP-screening has to take that fact into account. As we absolutely agree that standards have to be limited to few changing parameters we decided to choose a TVI-curve ( ISO F curve for CMY and K) that is already standardized in the ISO 12647-2. What does that mean in practice? If you know that you will use NP screening: Choose an ICC-profile based on the pertinent characterization data for your RGB-CMYK transformation. The ECI will publish such a profile. If you do use NP screening but you do not have RGB or pertinent CMYK- data: By giving the industry standardized characterization data including aim values for the press-calibration you have the chance using standardized device-links. We are sure to help the industry by establishing characterization- data for NP screenings and hope that the adoption of these will make life much easier in use of NP-screening. Kind regards Claas Bickeböller ------------------------------------------------------------------------ Claas Bickeböller Dept. Prepress Fogra Graphic Technology Research Association Streitfeldstraße 19 81673 Munich, Germany Telefon: +49 89. 431 82 - 336 Telefax: +49 89. 431 82 - 100 E-mail: bickeboeller(a)fogra.org Internet: www.fogra.org ------------------------------------------------------------------------ This e-mail message may contain confidential and/or privileged information. If you are not an addressee or otherwise authorized to receive this message, you should not use, copy, disclose or take any action based on this e- mail or any information contained in the message. If you have received this material in error, please advise the sender immediately by reply e- mail and delete this message. Managing Director: Dr. Eduard Neufeld | Registered Office: Munich | Register of Associations: VR 4909