A sheetstock for preparing mailers including die-cut identification cards which may be printed with a laser printer. The sheetstock includes a laser printable plastic adhered to a portion of the sheetstock. That portion is die-cut to define one or more identification cards. The remainder of the sheetstock...http://www.google.es/patents/US5131686?utm_source=gb-gplus-sharePatente US5131686 - Method for producing identification cards
