Line Screens

[Stiv]

I have the iGen line screen as the default 175. I have run into a few jobs lately that looked better on 200 line screen.
Some of the jobs had thin colored type that the screens did not show up in. For example an "N" had 2-colors in the first part and 3-colors in the second part. The 175 ruling was spaced just right so that a row of black could not fit in to trap the color.
So, my question is do you run 175 no matter what or do you review every job and switch back and forth?
I have only been calibrating for 175 and now have to put in the 200 calibration. Do you calibrate for all rulings?

 

[Stiv]

I have another question: After calibrating to the 200 line screen, is it true that my 175 line screen calibration is gone and I have to recalibrate if I need to run a job using 175 line screen?
In my associations I only show the 200 line screen calibration. I am assuming that the 175 line screen is gone and I have to recalibrate if I need to print using it.

 

[igen jim]

Stiv
My understanding is one must calibrate 175 line this is the default for the igen. If one calibrates 150, 200 or 300 line one keeps 175 line calibration. With that said if one uses 200 line only one must calibrate 175 line first then 200 line. Where I work we use 175 line. Every now an then someone will want to see the other line screens we always go back to 175 line. We will for some projects change igen cmyk to gracol.
Have a great day
Jim

 

[Stiv]

igen jim,
Yep, that is pretty much what I was told by a tech. Once a line screen is calibrated it stays there until it has been re-calibrated. So you want to calibrate at the start for whatever line screens you are going to be using for that shift, (or whatever your calibration schedule is). Start with the 175 line screen before calibrating the other line screens.