Multichannel tape head module having mechanically settable transducer pitch
An apparatus according to one embodiment includes a beam and a module coupled to the beam. The module has an array of transducers. A displacement device is positioned between the beam and the module for bending the module, thereby altering a pitch of the transducers. A method according to one embodiment includes applying a control signal to a displacement device positioned between a module having an array of transducers and a beam for bending the module, thereby altering a pitch of the transducers.
1. An apparatus, comprising:
a beam;
a module coupled to the beam, the module having an array of transducers; and
a displacement device positioned between the beam and the module for bending the module, thereby altering a pitch of the transducers,
wherein a tape bearing surface of the module has an arcuate shape, created by the displacement device, along a longitudinal axis of the tape bearing surface, the module being fixed in place on the beam to maintain the arcuate shape.
2. The apparatus as recited in claim 1 , comprising an adhesive fixing the module in place on the beam to maintain the arcuate shape created by the displacement device bending the module.
3. The apparatus as recited in claim 1 , wherein the arcuate shape is convex.
4. The apparatus as recited in claim 1 , wherein the arcuate shape is concave.
5. The apparatus as recited in claim 1 , wherein the arcuate shape is unchangeable by the displacement device due to the module being fixed in place on the beam to maintain the arcuate shape.
6. The apparatus as recited in claim 1 , wherein the displacement device is a thermal expansion device.
7. The apparatus as recited in claim 1 , wherein the displacement device is a mechanical device.
8. The apparatus as recited in claim 1 , wherein the displacement device is positioned centrally along a longitudinal axis of the array of transducers.
9. The apparatus as recited in claim 1 , wherein the displacement device is positioned toward one end of the module, and comprising a second displacement device positioned toward another end of the module.
10. The apparatus as recited in claim 1 , further comprising:
a drive mechanism for passing a magnetic medium over the module; and
a controller electrically coupled to the transducers.
11. A method, comprising:
causing a control signal to be applied to a displacement device positioned between a module having an array of transducers and a beam for bending the module, thereby causing a tape bearing surface of the module to have an arcuate shape along a longitudinal axis thereof and altering a pitch of the transducers; and
fixing the module, while being bent by the displacement device, in place on the beam to maintain the arcuate shape of the tape bearing surface of the module along the longitudinal axis thereof created by the bending.
12. The method as recited in claim 11 , wherein a controller determines a spacing of adjacent servo bands on a tape, and applies the control signal to adjust the pitch of the transducers according to the determined spacing.
13. The method as recited in claim 11 , wherein the displacement device expands for increasing the pitch.
14. The method as recited in claim 11 , wherein the displacement device contracts for reducing the pitch.
15. The method as recited in claim 11 , wherein the displacement device is selected from the group consisting of a piezo device, a thermal expansion device, and a mechanical device.
16. The method as recited in claim 11 , wherein the displacement device is positioned centrally along a longitudinal axis of the array of transducers.
17. The method as recited in claim 11 , wherein the displacement device is positioned toward one end of the module, and comprising a second displacement device positioned toward another end of the module.