Magnetic media formed by a thin planar arbitrary gap pattern magnetic head

Abstract

Magnetic media made using planar magnetic heads. A head may comprise a substrate having conductive thru-hole vias extending therethrough, a first magnetic layer deposited and patterned on the substrate, a first insulation layer deposited and patterned on the first magnetic layer, a conductive coil layer deposited and patterned on the first insulation layer and connected to the conductive thru-hole vias, a second insulation layer deposited and patterned on the conductive coil layer, vias patterned into the insulation layer extending to the first magnetic layer, a second magnetic layer deposited in the vias, and a third magnetic layer deposited and patterned on the second insulation layer and second magnetic layer. The third magnetic layer may be connected to the first magnetic layer through the second magnetic layer deposited in the vias of the insulation layers.

We claim: 
     
         1 . Magnetic media comprising a plurality of servo tracks, each servo track having a unique servo track ID encoded in the magnetic transitions of the servo track. 
     
     
         2 . The magnetic media of  claim 1 , wherein a plurality of magnetic transitions of the servo track form a timing-based servo pattern. 
     
     
         3 . Magnetic media formed by a magnetic recording head comprising:
 a substrate having a substantially continuous surface generally parallel with a tape bearing surface; and   a plurality of independent and magnetically isolated channels, each comprising:
 a first magnetic layer deposited on the substantially continuous surface of the substrate; 
 an electrically conductive coil layer deposited on the first magnetic layer; and 
 a second magnetic layer deposited on the electrically conductive coil layer, the second magnetic layer comprising at least one magnetic gap pattern. 
   
     
     
         4 . The magnetic media of  claim 3 , wherein the first and second magnetic layers of one or more of the channels are separated from their respective electrically conductive coil layer by at least one insulating layer. 
     
     
         5 . The magnetic media of  claim 3 , wherein the first and second magnetic layers of one or more of the channels are connected forming a closed magnetic flux path. 
     
     
         6 . The magnetic media of  claim 4 , wherein the first and second magnetic layers of the one or more channels are connected through vias in the insulating layers to form a closed magnetic flux path. 
     
     
         7 . The magnetic media of  claim 4 , wherein the substrate comprises a plurality of conductive thru vias. 
     
     
         8 . The magnetic media of  claim 7 , wherein the electrically conductive coil layer of one or more channels extends from and connects a first conductive thru via to a second conductive thru via associated with the respective channel. 
     
     
         9 . The magnetic media of  claim 3 , wherein the at least one magnetic gap pattern comprises a timing-based magnetic gap pattern. 
     
     
         10 . The magnetic media of  claim 8 , wherein two or more of the channels are driven independently of one another and at least one of the servo bands of the magnetic media has a unique servo track ID encoded in the magnetic transitions of the servo band. 
     
     
         11 . Magnetic tape media comprising:
 a plurality of data bands; and   a plurality of servo bands, each having a timing-based servo pattern written thereon by a magnetic recording head comprising:
 a substrate having a substantially continuous surface generally parallel with a tape bearing surface; and 
 a plurality of independent and magnetically isolated channels, each comprising:
 a first magnetic layer deposited on the substantially continuous surface of the substrate; 
 an electrically conductive coil layer deposited on the first magnetic layer; and 
 a second magnetic layer deposited on the electrically conductive coil layer, the second magnetic layer comprising at least one magnetic gap pattern. 
 
   
     
     
         12 . The magnetic tape media of  claim 11 , wherein at least two of the plurality of servo bands are written independently of one another.