Back to results
US 11,790,942 B2Granted
Process for forming magnetic recording layer for tape media
AssigneeInternational Business Machines Corporation
InventorRichard Bradshaw
Life of this patent
Estimating the term…
Abstract
A method, in one approach, includes forming a magnetic recording layer having: encapsulated nanoparticles each comprising a magnetic nanoparticle encapsulated by an encapsulating layer, and a polymeric binder binding the encapsulated nanoparticles.
Claims5
A method, comprising:
- forming a magnetic recording layer having:
- encapsulated nanoparticles each comprising a magnetic nanoparticle encapsulated by an encapsulating layer, and a polymeric binder binding the encapsulated nanoparticles, wherein forming the recording layer includes spray coating a mixture of the unencapsulated magnetic nanoparticles, an aromatic polymer, and the polymeric binder onto a structure.
A method, comprising:
- forming a magnetic recording layer having:
- encapsulated nanoparticles each comprising a magnetic nanoparticle encapsulated by an encapsulating layer, and a polymeric binder binding the encapsulated nanoparticles, wherein forming the recording layer includes heating the magnetic nanoparticles and an aromatic polymer to a temperature of at least 200 degrees Celsius;
- mixing the polymeric binder with the heated magnetic nanoparticles, the aromatic polymer, and a solvent to form a mixture;
- applying the mixture onto a structure;
- at least partially drying the applied mixture;
- and radiating the at least partially dried applied mixture for causing crosslinking of the polymeric binder.
3 more elements
A method, comprising:
- forming a magnetic recording layer having:
- encapsulated nanoparticles each comprising a magnetic nanoparticle encapsulated by an encapsulating layer, and a polymeric binder binding the encapsulated nanoparticles, wherein forming the recording layer includes radiating a mixture comprising the magnetic nanoparticles and an aromatic polymer for causing the aromatic polymer to crosslink, thereby forming the encapsulating layer around the magnetic nanoparticles.
A method, comprising:
- creating a suspension of magnetic nanoparticles and an aromatic polymer;
- mixing the suspension with a polymeric binder and a solvent to form a mixture;
- applying the mixture onto a structure;
- at least partially drying the applied mixture;
- and curing the applied mixture, wherein creating the suspension includes heating unencapsulated magnetic nanoparticles and the aromatic polymer to a temperature of at least 200 degrees Celsius.
2 more elements
A method, comprising:
- creating a suspension of magnetic nanoparticles and an aromatic polymer;
- mixing the suspension with a polymeric binder and a solvent to form a mixture;
- applying the mixture onto a structure;
- at least partially drying the applied mixture;
- and curing the applied mixture, wherein the magnetic nanoparticles are unencapsulated in the suspension.
2 more elements
Dependencies are inferred from the claim text.