Patent ID: 7165317
Filing Date: 2007-01-23
Classification: B24B,G11B,Y10S,Y10T

Abstract:
1. An electrode extension sheet for use in a lapping apparatus which performs lapping on an object to be lapped which is elongated in one direction, in which a plurality of elements consisting of at least one of electro-magnetic conversion elements and magneto-electric conversion elements are formed in the length direction, or in which a plurality of said elements and additional electrodes whose characteristics vary according to the lapping amount are formed in the length direction, by applying a load to the object to be lapped according to the positions where the elements are formed and by imparting a minute deformation to the object to be lapped to thereby effect lapping, wherein the electrode extension sheet is a flexible electrode extension sheet including a portion holding the object to be lapped, and a portion including wirings which respectively correspond to the elements and end portions of the wirings extend to the vicinity of the portion holding the object to be lapped.