Imation Corporation

Ramnath Subramaniam

Eric Daniel Morrison

Minyu Li

M Zaki Ali

Charles W Simpson

James M DePuydt

Christopher J Zwettler

Leonard Stulc

Jiayi Zhu

Christopher A Merton

Eric D Levinson

This disclosure describes optical media that is compatible with conventional DVD drives. Unlike conventional DVDs, however, the described media uses a lower cost, lower quality material for one of the substrates. In particular, a so-called 'dummy' substrate may comprise a non-optical grade polymeric material. In some cases, the dummy substrate may include post-consumer recycled materials, such as recycled polycarbonate. In other cases, dummy substrate may comprise a low cost non-optical grade polycarbonate, such as an industrial grade polycarbonate. In still other cases, the dummy substrate may comprise a polycarbonate blend, or other non-polycarbonate materials.

Optical media manufactured with low-grade materials

A magnetic recording medium which includes a substrate having a front side and a backside, a longitudinal direction and a cross-web direction, with a particulate/binder or thin film magnetic layer formed over the front side of the substrate, wherein the magnetic medium has a cross-web dimensional difference from the magnetic recording head used therewith of less than 900 &#x3bc;m/meter over a 35&#xb0; C. temperature range, and over a 70% relative humidity range. Preferred substrates include thin metals, metal alloys, and thin glass films.

Magnetic recording medium having a dimensionally stable substrate

Release layers and compositions for forming the same

Growing community of inventors

Woodbury, MN, United States of America

Ramnath Subramaniam