Transparent magnetic recording layers and photographic elements

Details Transparent magnetic recording layers and photographic elements Transparent magnetic recording layers and photographic elements

1990-11-06

1993-10-12

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Structurally defined

430140, 430395, 427131, 4274071, 360134, 428694TF, 428694TP, G03C 100

Patent

active

052524418

ABSTRACT:
A photographic element including a light-sensitive layer and a transparent magnetic layer wherein the magnetic particles in the transparent binder are cobalt surface treated gamma iron oxide (Fe.sub.2 O.sub.3) having a specific area of at least 30 m.sup.2 /g, the particles being coated with from about 10 to about 50% by weight of a material having a refractive index less than that of the binder, the particles having a powder coercivity greater than about 450 Oe.

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patent: 5043212 (1991-08-01), Ando et al.
patent: 5082733 (1992-01-01), Watanabe et al.

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