It sounds like a resolution problem due to the choppy, pixaleted edges....need some more background info. Was the file created in
PS or imported in? file type?
"rasterizing" is when you convert a vector element to bitmap. When you type text in
PS it's vector but when the file is flattened the type must be "rasterized". It's possible you printed the image while the type was still as vector and then saved the image as a low res .jpg....which would explain the jaggies from the later printing.