Thats right!
Techkon is the first device to incorporate SCTV in their SpectroDens!
So what is SCTV?
ISO 20654:2017 - This method for the calculation of Spot Colour Tone Value (SCTV) produces approximately uniform visual spacing of tones between substrate and solid. It can be calculated from spectral reflectance or colorimetric measurements of the solid ink, substrate and one or more patches of intermediate tones to be measured.
What does this mean for you?
Traditional density based measurements with Murray-Davis made it very challenging to manage any color that was not CMYK. Steve Smiley gave a great explanation of those challenges and why SCTV works at the recent FTA Conference in St. Louis.
In short, other metrics like Murray-Davis and Yule-Nielsen do not accurately capture the even tonal distribution we see in a spot color tonal fade. This presents particular issues with accurately creating spot color print curve adjustments or when trying to simulate spot color tone values in the proofing process or when trying to determine how much gain you really have on press.
In August of this year, 2017, ISO published this new metric as a standard for spot color measurement.
Shortly after, on 5 September 2017 Techkon was the first to offer a firmware update for their SpectroDens IV device. They will be releasing a firmware update for the SpectroDens III before the end of the year. Easily accessible and a simple interface make it a perfect solution for operators to quickly learn and adopt as part of their routine. Ultimately this new metric offers more accurate color measurement for spot colors that will impact both prepress and the pressroom.
Reach out to your local APR Technical Sales Rep for more details or Catherine Haynes at [email protected].
Can you provide the formulas for calcualting