Danny, I don’t know what model your scanner is, so this may not be true for your scanner. We have a 42” Colortrac scanner we’ve been very happy with, but we had a few issues similar to what you are describing at first. A couple things you might check: 1 - See if the scanning software has a “speed” setting that is separate from the resolution setting. It will by default go slower when you scan at higher resolutions, but ours has a separate setting for speed regardless of resolution. We found that setting it in the middle gave us good speed but no strange artifacts like you are describing.’ 2 - I don’t know how your scanner is connected to the computer, but we had some issues with the USB interface that sound similar to what you are describing. We switched to using a network cable and haven’t had any issues since. 3 - One more thing to look at is whether the artifacts you are seeing are actually present in the saved file. You don’t say that you saved the file out of the scanning software. Sometimes there are strange artifacts on the screen in the scanning software, but when we save it to disk they are not there. We’ve been able to get rid of this behavior by turning off any of the auto-orientation settings in the scanning software. Basically we try to do as little as possible in the scanning software and do any processing in Photoshop. Good luck. -- Dr. Mark Jackson Geospatial Sciences, Engineering & Technology Brigham Young University 2420 HBLL ∙ Provo UT 84602 801.422.9753 ∙ [log in to unmask]<mailto:[log in to unmask]> On Feb 7, 2019, at 7:49 AM, Dotson, Daniel <[log in to unmask]<mailto:[log in to unmask]>> wrote: Hi all We have a new giant scanner that can accommodate maps via sheet feeding. We are just beginning to play with it and noticed something odd. When scanning at the highest resolution, everything looked fine - except the file size was ENORMOUS. Note the map goes through much slower than the next scenario. The map scanned at the middle resolution looked fine at first, but then we noticed a few oddities. For example, an 8 that was handwritten had a duplicated top to the 8 - basically, it looked like a snowman. The scanner moved pulled the map through much quicker. The quality at first glance looks nearly the same except for these little blips. Does anyone have any experience why these blips may be occurring? One consideration is that the map was previously folded - however, this didn't seem to affect the higher resolution / lower speed. Maybe the faster speed was the reason - but perhaps someone out there who has used such a scanner before knows what the deal is? Thanks for any insight! -Danny Daniel S. Dotson Associate Professor Head - Orton Memorial Library of Geology & Gardner Family Map Room Mathematical Sciences Librarian & Science Education Specialist The Ohio State University University Libraries 180 E Orton Hall - Geology Library, 155 S Oval Mall Columbus, OH 43210 614-688-0053 Office http://orcid.org/0000-0002-2033-2622<https://www.scopus.com/redirect.uri?url=http://www.orcid.org/0000-0002-2033-2622&authorId=20435484000&origin=AuthorProfile&orcId=0000-0002-2033-2622&category=orcidLink> [log in to unmask]<mailto:[log in to unmask]> library.osu.edu<http://library.osu.edu/>