For the record, a distinction should be made between inked decals (tampo on decal paper?) and printed ink decals from modern laser printers. The former have much softer lines from uneven edges, which give them a certain C&V charm. The former are much crisper, seeing that they are printed from vector artwork off a computer.
Here are examples of the former:
Early Competition script - an inked decal. Later one is obviously a sticker.
Don't forget Schwinn's penchant for silkscreening either:
-Kurt