Claims
- 1. A photographic carrier material comprising a dried cellulose sheet coated on both surfaces thereof with a polyolefin resin suitable for the deposition of at least one light sensitive liquid developable layer thereon, the improvement in said coated sheet comprising a plurality of hollow, thermoplastic microspheres substantially uniformly mixed in said cellulose sheet in an amount of about 0.5 - 5.0 weight percent based on the cellulose.
- 2. The carrier material of claim 1 wherein the amount of microspheres is 3.0 weight percent or less.
- 3. The carrier material of claim 1 including said light sensitive layer in combination therewith, said light sensitive layer comprising silver salts.
- 4. The carrier material of claim 1 wherein said microspheres are at least partially inflated.
- 5. The carrier material of claim 1 including 0.1 - 1 weight percent of a water resisting agent and 1 - 2 weight percent of a retention agent.
- 6. The carrier material of claim 5 wherein said water resisting agent is a dimeric alkyl composition.
- 7. The carrier material of claim 5 wherein said retention agent is a cationic polyamide resin.
- 8. The carrier material of claim 1 wherein said microspheres comprise a vinylidene chloride-acrylonitrile inter polymer.
- 9. The carrier material of claim 8 wherein at least some of said microspheres are filled with a blowing agent.
- 10. The carrier material of claim 1 wherein said polyolefin coating on at least one of the surfaces of said sheet includes a pigment mixed therein.
- 11. The carrier material of claim 10 wherein said pigment comprises titanium dioxide.
- 12. The carrier material of claim 1 wherein said microspheres are inflated prior to the coating of said surfaces with said polyolefin resin.
- 13. The carrier material of claim 1 wherein the surfaces of said sheet are treated, prior to the coating of said surfaces with said polyolefin resin, to improve the adhesion of said resin to said surfaces.
- 14. The carrier material of claim 13 wherein the surfaces of said sheet are sized, and said coating is coated on said sized surfaces.
Priority Claims (1)
Number |
Date |
Country |
Kind |
03261/75 |
Jan 1975 |
GBX |
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RELATED APPLICATION
This application is a continuation-in-part of my copending application, Ser. No. 651,602, filed Jan. 22, 1976, now abandoned.
US Referenced Citations (8)
Non-Patent Literature Citations (2)
Entry |
Kenaga, "Microsphere Paper," TAPPI Journal, 12-1973, vol. 56, No. 12, pp. 157-160. |
Treier, "Development of a Unique Lightweight Paper", TAPPI Journal, vol. 55, No. 5, 5-1972, pp. 769-771. |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
651602 |
Jan 1976 |
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