Opportunity is missed by most people because it is dressed in overalls and looks like work. - Thomas Edison
8 color on black, all films output at 55 LPI, 22.5°, elliptical dots. One of the screens is giving us a horrible moire pattern against the others. Checked and double checked. Can anyone recommend a different angle I could use for just that one color? Printed alone, no moire. All other colors are fine. I would like to try just making the one more screen, before I decide to output the entire job again...Steve
Quote from: Sbrem on July 31, 2013, 10:40:48 AM8 color on black, all films output at 55 LPI, 22.5°, elliptical dots. One of the screens is giving us a horrible moire pattern against the others. Checked and double checked. Can anyone recommend a different angle I could use for just that one color? Printed alone, no moire. All other colors are fine. I would like to try just making the one more screen, before I decide to output the entire job again...SteveI kept printing one film at a different LPI. pierre
Quote from: Sbrem on July 31, 2013, 10:40:48 AM8 color on black, all films output at 55 LPI, 22.5°, elliptical dots. One of the screens is giving us a horrible moire pattern against the others. Checked and double checked. Can anyone recommend a different angle I could use for just that one color? Printed alone, no moire. All other colors are fine. I would like to try just making the one more screen, before I decide to output the entire job again...Stevewent through the same thing yesterday. I kept printing one film at a different LPI. 'almost certain that's your problem, can't think of anything else that would impact only one screen that prints fine otherwise.pierre
Quote from: blue moon on July 31, 2013, 10:57:04 AMQuote from: Sbrem on July 31, 2013, 10:40:48 AM8 color on black, all films output at 55 LPI, 22.5°, elliptical dots. One of the screens is giving us a horrible moire pattern against the others. Checked and double checked. Can anyone recommend a different angle I could use for just that one color? Printed alone, no moire. All other colors are fine. I would like to try just making the one more screen, before I decide to output the entire job again...Stevewent through the same thing yesterday. I kept printing one film at a different LPI. 'almost certain that's your problem, can't think of anything else that would impact only one screen that prints fine otherwise.pierreThat was my first thought of course. So out came the loupe to check angles and line count (compared to the other films) Yes, the first one was wrong, so I output again, the one film, and it is correct. It's a really strong one moire too. Looks like re-outputting the whole thing...Steve
I was told 61 degrees as a sure fire LPI by two isolated sources who were keynote presenters at SGIA about 4-5 years ago in New Orleans.