Which dot shape? - PrintPlanet.com
Sep 7, 2020 · The good thing about the Euclidean is that the dot shape, except for 50% tint, is the same for all screen angles and frequencies. And the dot is non-directional so it is less affected by press problems. But it puts the optical bump where the dots first connect at the 50% midtone tint which puts it in the most important and visible image tones.
Elliptical vs. Round vs. Square dot shape? | PrintPlanet.com
Apr 16, 2012 · Plus, because elliptcal dots are directional they can magnify press issues like slur and doubling. The best AM/XM halftone dot shape in a CtP environment is round (i.e. Non-Euclidean). It puts the optical bump in the shadows at 75% tone. It is non-directional and the dot shape is the same at every screen angle.
Dot shape in offset lytho. Ctp-workflow | PrintPlanet.com
Oct 22, 2015 · The Round dot (small round dot in the highlights that just increase in size) has the advantage over Euclidean and Elliptical dots in that the "optical bump" that occurs when dots first touch happens at 75% - well into the shadows so it's not visible (as opposed to 50% with Euclidean and 40%/60% with Elliptical).
how do i figure out what kind of dot shape to use where?
Nov 26, 2010 · For dot shape, if you are using CtP, then round dot is the best. With round dot the dots are round through the tone range. Benefits: Dot shape is the same for all screen angles and frequencies, optical bump is hidden in the shadows at the 75% tone, dot is non-directional so it is less affected by press problems. Reduces single channel moirà ...
Anyone using Euclidean dot and why? Sheetfed Offset
May 5, 2022 · Benefits: Dot shape is the same for all screen angles and frequencies, optical bump is hidden in the shadows at the 75% tone, dot is non-directional so it is less affected by press problems. Reduces single channel moiré issues. Dot is non directional, i.e. all screen angle dots react the same to directional press issues such as slur and doubling
Elliptical vs. Round vs. Square dot shape? | PrintPlanet.com
Apr 16, 2012 · The reading that I have done has explained that elliptical is used mostly for screen printing and other print processes with heavy dot gain. We have problems matching proofs that are made using the official GRACol press data which I believe was run at 175 LS, using a square or round dot shape. The problem that we have when trying to match the ...
Round vs Euclidean - PrintPlanet.com
Nov 10, 2009 · Here are a few reasons why this is the "best" dot shape for CTP compared to Euclidean, Elliptical, Square, etc. dot shapes: 1) Dot shape is the same for all screen angles - eliminates dot gain due to dot shape variables 2) Reduces single channel moiré issues 3) Dot is non directional, i.e. all screen angle dots react the same to directional ...
1 bit Tiff problem | PrintPlanet.com
Jul 29, 2012 · Dot shape will not be affected by dpi. Lpi, within reason, will not be affected by dpi. If you are the printer then it is your job to say what dpi/lpi/dot shape you require for supplied 1 bit tiffs. At the very least you need to discuss this with whoever is supplying you with the 1 bit tiffs.
Default line screen & dot shape | PrintPlanet.com
Jul 14, 2014 · Do you have a "default"? And what is the range of work that you produce? We are a large commercial printer that encounters the gamut of offset print jobs. • Everything from plastics and #1 sheets to what my Father called "birdcage liner" • Conventional and UV inks • Dimensions from...
Calcutate dot gain based upon readings with stochastic screen
May 17, 2013. #1. Hello everybody, I've been told that it's impossible to calculate dot gain, based upon readings from printed stochastic screens. Only AM-screens (round, elliptical, ...) should do the trick. I find that very hard to believe since tint values (and thus dot gain) are calculated using both a blank paper measurement and a 100% ...