A method for producing an ink-spread compensated variant of an existing optical code encodation scheme, wherein the existing encodation scheme has printed areas and spaces having a length in at least one dimension being a function of a given unit length for encoding information. In the method, the pattern...http://www.google.de/patents/US6834803?utm_source=gb-gplus-sharePatent US6834803 - Ink-spread compensated bar code symbology and compensation methods
