VIDEORECORDERAUFZEICHNUNGSBAND DAS SICH ZUR HOCHGESCHWINDIGKEITSVERVIELFAELTIGUNG EIGNET

Disclosed is a video tape suitable for use in high speed contact duplication. The magnetic layer comprises a magnetic pigment dispersed in a polymeric binder at amounts of magnetic pigment between 75 and 88 percent by weight of the magnetic layer with a total pigment loading (magnetic+nonmagnetic pi...

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Bibliographische Detailangaben
Hauptverfasser:	BEZENEK, BENEDICT, L., SAINT PAUL, MN 55133-3427, US, CARLSON, JAMES, G., SAINT PAUL, MN 55133-3427, US, CHANG, DANIEL, Y., SAINT PAUL, MN 55133-3427, US, KUCK, KEVIN, K., SAINT PAUL, MN 55133-3427, US, BERG, ALLVIN, M., SAINT PAUL, MN 55133-3427, US, HARVEY, JOHN, C., SAINT PAUL, MN 55133-3427, US, MCCOLLAM, ROBERT, P., SAINT PAUL, MN 55133-3427, US, BOHLSEN, THOMAS, M., SAINT PAUL, MN 55133-3427, US, JOHNSON, STEPHEN, A., SAINT PAUL, MN 55133-3427, US
Format:	Patent
Sprache:	ger
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON CORRECTING FLUIDS DYES FILLING PASTES INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER INKS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PHYSICS POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	Disclosed is a video tape suitable for use in high speed contact duplication. The magnetic layer comprises a magnetic pigment dispersed in a polymeric binder at amounts of magnetic pigment between 75 and 88 percent by weight of the magnetic layer with a total pigment loading (magnetic+nonmagnetic pigments) of at least 80 percent by weight. The tape is provided with a backside coating comprising at least two nonmagnetic pigments dispersed in a polymeric binder, the first nonmagnetic pigment, being a conductive material and having a relatively small particle size of between about 0.015 and 0.15 mu m, and the second nonmagnetic pigment having a relatively large particle size of between about 0.15 and 1.5 mu m. The magnetic layer has a lubricant absorption value of at least 4 and a surface roughness of between 5 and 15 nm. The backside coating has a surface roughness of between 10 and 150 nm. The polymeric binder of either or both of the magnetic layer and the backside coating may preferably comprise a hard component resin and a soft component resin, wherein the soft component resin is a polyurethane having a plurality of pendant carboxy groups.