- When you place thin-lined rectangle outside of an object, the line can be even thinner or not be printed at all.
This is because Illustrator clips (cuts) the size of entire object by rounding off decimal places when making EPS saving.
Choose either solution 1 or solution 2 below to fix the problem.
1. Place dummy object outside of the image, and make EPS saving.
2. Select slightly bigger page size at printer driver output (Go to [File] -> [Print]).