Thin Shapes Don’t Reproduce Well
Fine lines and thin shapes have a tendency to fill in when printed in reverse. This happens in almost every kind of printing: offset, letterpress, silk screen and even ink jet. The problem happens on coated stock but will be even worse on uncoated paper. Even positive lines that are thin present difficulties in certain kinds of printing. And sooner or later a client will need to or want to reverse their identity.
Online imagery is viewed through a grid of pixels. If the shapes are too thin, they will not occupy a whole pixel and will be reproduced in a color that is somewhere between the image color and the background color. Too many of these small shapes result in what I call “pixel mush.”
There’s no getting away from it: fine lines and thin shapes will cause problems and should be avoided in identity design.
Adapted from Logo Design Theory: How Branding Design Really Works