How do you add custom swatch into the library without manually entering the LAB Value? You can simply measure a sample or import that color as color book.

Does the export function allow to save the measured data in CGATS or CXF formats? Not through the export function, but the SpectroChart tool can do this.

Can you import ISO targets in printing curves? Some of the ISO targets are already defined on the SpectroDens, which you can sync with the SpectroConnect software.

Can we add the new IT8/7.5 chart? Yes. You can build any custom chart as a ttg file and import into SpectroConnect.

Can the SCTV option be used on CMYK inks as well as spot color inks? Yes. You can use it for internal purpose but not recommended yet by ISO or IDEAlliance.

Can I export measurement of p2p to .txt format? Yes, it will be a CGATS compliant TXT file.

Can you please discuss how this unit would benefit your expanded gamut users? Expanded gamut or ECG printing is still a type of process printing where it is critical to maintain specfic solid ink densites and TVI values to ensure that you have a repeatable priont process that can accurately reproduce color. SpectroDens provides the ability to measure solid ink densities and TVI’s for all of the colors in your ECG process. Also, SpectroDens has…

Can you please discuss how this unit would benefit your expanded gamut users? Expanded gamut or ECG printing is still a type of process printing where it is critical to maintain specfic solid ink densites and TVI values to ensure that you have a repeatable priont process that can accurately reproduce color. SpectroDens provides the ability to measure solid ink densities and TVI’s for all of the colors in your ECG process. Also, SpectroDens has…

Is the gray guide strip on your website? It is shared by client request. Email to: service@techkonusa.com.

When do you adjust white reference to “absolute” and when to “relative”? Yes, if you wish the density reading exclude the paper density, you can switch to paper or relative. Colorimetric readings will always be Absolute.

Battery related question…Can you easily power the device off between uses or does it only “go to sleep”? It seems older SpectroDens models did not have an option to power OFF. There is no Power Off function on the SDN4, except the travel lock. The device will go into sleep mode after 1 minute or 2 and it uses very minimum battery power under sleep mode. You can leave the device in sleep for a…

Why don’t you use the smaller aperture size as standard? Is a difference in terms of measurement? In general, we would recommend that you always use the largest aperture size that you is possible for your specific application. This ensures the highest degree of measurement repeatabiity because a larger sample size is being collected by the instrument. This is true for any spectrophotometer and larger apertures are particularly helpful when their is color variation withing…

What size aperture do you recommend for offset printing at a high line screen frequency? My SpectroDens currently uses a 3.0mm aperture, and we use 300 lpi — that is not a typo. If you have limited space for color bar or color control patch on the press sheet, you can switch to 1.5 mm aperture. But in general, the larget the aperture the more consistent the readings you will get since it provides more…

How come different spectro devices from different brands give different density measurements, even different from Offset presses manufacturer measurement tools such as Manroland and Heidelberg? What is the diffference based on? The differences can be caused by many reasons. The first thing to check is the measurement settings on different insturments. For example, the common density setting used in North America is ISO T/ No Polarization filter/ Absolute. Any change in the setting will greatly…

What kind of vendor reporting system do you recommend? Techkon would definitely recommend our ChromaQA cloud based color quality reporting solution. This system is extremely powerful but easy to use and deploy throughout print supply chain. Please check out our website or feel free to contact us to learn more.

How does pressman hit color on press and have delta e under 2 throughout the press run? Once the client approves the color on press, please make sure your press prints as consistent as possible. Things to check includes ink/water balance, PH level, press room temperture/humidity variation, press consumerbles, etc. It is helpful to have an automatic spectro scanner in the press room to help the operator to notice any issues on the press within…

How does pressman manage press to hit G7? Color variations can be caused by many factors, such as ink formulation, density fluctuation, press consumerbles, substrate furface. To answer we need more details.

Besides dE, do you find Spot Color Tone Value (SCTV) usefully when controlling spot color printing? Yes. Just like dot gains for KCMY, the SCTV tells us if we are puttting the correct amount of spot color ink onto the sheet. This becomes more criticle if the artwork has vignette printed using spot inks, commonly seen in hair color boxes or cosmetic products.

Where on the sheet would you place the color bar? Wherever you have the room for the color bar. We heard the gripper side could be more consistent then the tail side on some old presses. But when it come to actual job, your artwork imposition play an important role where you can place the color bar. Some folding carton jobs even won’t have any space for an entire color bar. From the measurement device…

Does G7 work with printers who are EG? Yes. At this moent, the EG (Extended Gamut) is still quite new in terms of industry application. We have seem EG print suppliers use G7 calibration tool to control their KCMY process ink and then SCTV (Spot Color Tone Value) for OVG or spot colors. SpectroDens has the SCTV function on all models.