Patent ID: 6659592
Filing Date: 2003-12-09
Classification: B41J

Abstract:
An apparatus comprising:a substrate having a plurality of electrical interconnects extending therethrough, said electrical interconnects for conveying electrical signals through said substrate such that said electrical signals are carried by redundant paths, wherein said electrical interconnects comprise a first number of holes in said substrate having sidewalls lined with a conducting material such that said first number of holes are not solidly filled; a conductive layer mounted on said substrate and operable to receive and distribute said electrical signals delivered through said substrate via said electrical interconnects; and a structure electrically coupled to said conductive layer and operable to receive said electrical signals through an electrical contact that has an area larger than an area of each of said first number of holes, said electrical contact electrically coupled to more than one of said first number of holes, wherein redundant electrical paths are provided to said electrical contact.