Full Version: banding
From: Harvey only (HARVEY-ONLY) [#12]
19 Feb 2007
To: Mike (SPACE_ENGRAVERS) [#8] 19 Feb 2007
If it is something like 1/2" darker, 1/2" lighter, 1/2" darker, etc., it is caused by bitmap misinterpretation.
The techniques you posted seem to be right. I assume when you went to 300 DPI resolution you did it by resampling. If you went there then resized it could be problematic.
Also Corel 9 likes the image to be a size that the pixels in the width are divisible by 4 evenly. There is also a bug in 9 that required you to remove 1 pixel of width from the image after all other adjustments, in order to not get a line vertically down the center. (Since the updated ULS driver a few years ago this has not caused me problems.)
From: Mike (SPACE_ENGRAVERS) [#13]
20 Feb 2007
To: ALL
Thanks to Brian at Epilog helping me narrow down my problem, I finally figured it out. When I was exporting my file to the 8-bit grayscale, the icc profile and anti-aliasing buttons were checked. I'm not sure which one of these fixed my problem, but it's good now! Anyone know what these do?
Mike
From: Stunt Engraver (DGL) [#14]
20 Feb 2007
To: Mike (SPACE_ENGRAVERS) [#13] 20 Feb 2007
ICC (International Color Consortium) profiles are used to calibrate colors for specific printer, ink and substrate combinations.