Color swatch charts are formed by feeding sheets eighteen inches or longer in length with this long dimension of the sheet disposed transversely to the sheet travel direction. Ribbons in a row of eighteen inches or longer are simultaneously severed with the first and last swatch in each row of identical...http://www.google.es/patents/US6030481?utm_source=gb-gplus-sharePatente US6030481 - Method and apparatus for manufacture of swatch bearing sheets
Method and apparatus for manufacture of swatch bearing sheets
