Minnesota Mining and Manufacturing Company

Imation Corporation

James A Greczyna

Ramesh C Kumar

James G Carlson

Nelson T Rotto

Christopher Miles Evans

Colin F Norman

Ruth M Erkkila

Kam Wah Law

Chi-Ming Tseng

Brian D Brong

Kevin R Katzenmaier

Stephen R Ebner

Milind B Sabade

Leslie M Wolff

A magnetic recording medium including a substrate, a magnetic side, and a backside. The substrate defines a first surface and a second surface opposite the first surface. The magnetic side is formed over the first surface of the substrate and defines a recording surface. The backside is coated on the second surface of the substrate and is configured to decrease embossment of the recording surface. The backside defines a backside surface opposite the substrate. The backside surface having a skew less than about 0.5 and a kurtosis less than about 4.0.

Magnetic recording medium with backside to decrease recording surface embossment

A polymeric binder system useful for a magnetic recording medium, the polymeric binder system and comprising a hard resin component comprising a nonhalogenated vinyl copolymer and a soft resin component comprising a polyurethane having a phosphonate diester group. The binder system is useful for preparing the magnetic layer and/or backside coating of magnetic recording media, in order to provide media that demonstrate an improved combination of such as modulus, Tg, and smoothness.

Binder system for magnetic media

A magnetic recording medium comprising a support having two major surfaces, a magnetic layer provided on one major surface of the support, and a backside coating provided on the other major surface of the support wherein the backside coating comprises nonmagnetic, multicomponent particles dispersed in a polymeric binder. The nonmagnetic, multicomponent particles are comprised of a first component having a Mohs hardness equal to or less than 7 and a second component having a Mohs hardness greater than 7.

Magnetic recording media having a backside coating which includes

Magnetic media having a backside coating containing polymeric acrylate particles are provided. The polymeric acrylate particles are prepared from about 50-98 parts by weight of at least one kind of polymerizable di(meth)acrylate monomer of the formula:

Magnetic recording medium with backside coating containing polymeric

Magnetic recording medium having a binder system including a non

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Vadnais Heights, MN, United States of America

James A Greczyna