Claims
- 1. A photographic element comprising a photosensitive layer, a flexible cellulose organic acid ester support film, and adjacent thereto a substantially transparent magnetic recording layer containing magnetic particles in a binder said magnetic particles having a specific surface area of at least 30 m.sup.2 /g, said magnetic recording layer having a dried thickness of less than about 1.5 micron and increases the optical density of the photographic element by less than 0.2 optical density unit across the visible portion of the spectrum from 400 to 700 nm.
- 2. The element of claim 1 wherein said magnetic recording layer is disposed substantially across the photosensitive area of the element.
- 3. The element of claim 1 wherein said magnetic particles are cobalt surface treated .gamma.-Fe.sub.2 O.sub.3 particles.
- 4. The element of claim 1 wherein said magnetic particles are acicular particles having an average length of less than 0.3 micron.
- 5. The element of claim 1 wherein said magnetic particles are present in a concentration from 10 to 1000 mg/m.sup.2.
- 6. The photographic element of claim 1 wherein the magnetic recording layer is disposed substantially across the photosensitive area of the element, the magnetic particles of the transparent magnetic recording layer being acicular cobalt surface treated .gamma.-Fe.sub.2 O.sub.3 particles having an average length less than 0.3 micron and a specific surface area of at least 30 m.sup.2 /g, the magnetic particles being present in a concentration of from 10 to 1000 mg/m.sup.2.
- 7. The photographic element of claim 6 wherein the transparent magnetic recording layer increases the optical density of the photographic element by less than 0.1 optical density unit across the visible portion of the spectrum from 400 to 700 nm.
- 8. The photographic element of claim 1 wherein the magnetic particles of the transparent magnetic recording layer are present in a concentration of from 20 to 70 mg/m.sup.2.
Parent Case Info
This is a continuation of application Ser. No. 07/473,494, filed Feb. 1, 1990, abandoned.
US Referenced Citations (6)
Foreign Referenced Citations (2)
Number |
Date |
Country |
686172 |
May 1964 |
CAX |
60-53952 |
Mar 1985 |
JPX |
Non-Patent Literature Citations (1)
Entry |
Research Disclosure 17643, 1979. |
Continuations (1)
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Number |
Date |
Country |
Parent |
473494 |
Feb 1990 |
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