Article with oxidation protected adhesive and anti-static layer

Claim 2

IN A PHOTOGRAPHIC ARTICLE COMPRISING A RADIATION SENSITIVE MATERIAL, A DIELECTRIC HYDROPHOBIC POLYMER SUPPORT, A HYDROPHILIC COLLOID COATING AN AN ADHESIVE HYDROPHILIC SUBBING LAYER WHICH IS CONTIGUOUS TO SAID SUPPORT AND SAID HYDROPHILIC COLLOID COATING AND IS BONDED TO EACH, THE IMPROVEMENT IN WHICH SAID ADHESIVE SUBBING LAYER IS ADDITIONALLY AN ANTI-STATIC LAYER EXHIBITING A SURFACE RESISTIVITY OF LESS THAN 10**12 OHMS PER SQUARE AND IS BINDERLESS AND CONSISTS ESSENTIALLY OF AN INTIMATE BLEND OF A. A METAL ELECTRICAL CONDUCTOR CAPABLE OF OXIDATION TO A LESS CONDUCTIVE STATE AND AT LEAST ABOUT 20 WEIGHT, BASED ON THE WEIGHT OF SAID BLEND OF B. A PROTECTIVE INORGANIC OXIDE SELECTED FROM THE GROUP CONSISTING OF SILICON OXIDE, MAGNESIUM OXIDE, ALUMINUM OXIDE, TANTALUM OXIDE, TITANIUM OXIDE, BORO-SILICON OXIDE AND MIXTURES THEREOF; THE THICKNESS OF SAID ADHESIVE SUBBING LAYER BEING FROM ABOUT 50 TO ABOUT 500 ANGSTROMS.

Claim 3

In a photograpic article comprising a radiation-sensitive material, a dielectric hydrophobic polymer support, a hydrophilic gelatin coating and an adhesive hydrophilic subbing layer which is contiguous to said support and said hydrophilic gelatin coating and is bonded to each, the improvement in which said adhesive subbing layer is additionally an anti-static layer exhibiting a surface resistivity of less than 108 ohms per square and is binderless and consists essentially of an intimate blend of a. a metal electrical conductor capable of oxidation to a less conductive state, and at least about 20 weight, based on the weight of said blend of b. a protective inorganic oxide selected from the group consisting of silicon oxide, magnesium oxide, aluminum oxide, tantalum oxide, titanium oxide, boro-silicon oxide and mixtures thereof; the thickness of said anti-static layer being from about 50 to about 500 angstroms.

Claim 4

In a photograpic article comprising a radiation-sensitive material, a dielectric hydrophobic polymer support, a hydrophilic gelatin coating and an adhesive hydrophilic subbing layer which is contiguous to said support and said hydrophilic gelatin coating and is bonded to each, the improvement in which said adhesive subbing layer is additionally an anti-static layer exhibiting a surface resistivity of less than 108 ohms per square and is binderless and consists essentially of an intimate blend of a. a metal electrical conductor capable of oxidation to a less conductive state, and at least about 20 weight, based on the weight of said blend of b. a protective inorganic oxide selected from the group consisting of silicon oxide, magnesium oxide, aluminum oxide, tantalum oxide, titanium oxide, boro-silicon oxide and mixtures thereof; the thickness of said anti-static layer being from about 50 to about 500 angstroms.

Claim 5

In a photographic article according to claim 2, said protective inorganic oxide consisting essentially of silicon monoxide.

Claim 6

In a photographic article according to claim 2, said subbing layer consisting essentially of a mixture of chromium and silicon oxide.

Claim 7

In a photographic article according to claim 2, said support being polyethylene terephthalate.

Claim 8

In a photographic article according to claim 2, said radiation-sensitive material being a silver halide.

Claim 9

In a photographic article according to claim 2, said support being polyethylene terephthalate, said radiation-sensitive material being a silver halide and said subbing layer consisting essentially of silicon oxide and chromium.

Claim 10

In a photographic article according to claim 7, said silver halide being silver bromochloride.

Claim 11

In a photographic article comprising a dielectric hydrophobic polymer support, a first hydrophilic gelatin coating, a second hydrophilic gelatin coating bonded to said first hydrophilic gelatin coating and containing a radiation-sensitive silver halide, and an adhesive hydrophilic subbing layer which is contiguous to said support and said first hydrophilic gelatin coating and is bonded to each, the improvement in which said adhesive subbing layer is additionally an anti-static layer exhibiting a surface resistivity of less than 108 ohms per square, is substantially transparent and consists essentially of an intimate blend of a. a vapor deposited electrically conductive metal capable of oxidation to a less conductive state and b. a protective inorganic oxide vapor codeposited with said electrically conductive metal in a concentration equal to at least about 20 weight percent of said intimate blend and sufficient to inhibit said oxidation; said inorganic oxide being selected from the group consisting of silicon oxide, magnesium oxide, aluminum oxide, tantalum oxide, titanium oxide, boro-silicon oxide and mixtures thereof; the thickness of said anti-static layer being from about 50 to about 500 angstroms.

Claim 12

In a photographic article comprising a dielectric hydrophobic polymer support, a first hydrophilic gelatin coating, a second hydrophilic gelatin coating bonded to said first hydrophilic gelatin coating and containing a radiation-sensitive silver halide, and an adhesive hydrophilic subbing layer which is contiguous to said support and said first hydrophilic gelatin coating and is bonded to each, the improvement in which said adhesive subbing layer is additionally an anti-static layer exhibiting a surface resistivity of less than 108 ohms per square, is substantially transparent and consists essentially of an intimate blend of a. a vapor deposited electrically conductive metal capable of oxidation to a less conductive state and b. a protective inorganic oxide vapor codeposited with said electrically conductive metal in a concentration equal to at least about 20 weight percent of said intimate blend and sufficient to inhibit said oxidation; said inorganic oxide being selected from the group consisting of silicon oxide, magnesium oxide, aluminum oxide, tantalum oxide, titanium oxide, boro-silicon oxide and mixtures thereof; the thickness of said anti-static layer being from about 50 to about 500 angstroms.

Claim 13

In a photographic article according to claim 9, said electrically conductive metal consisting essentially of chromium.

Claim 14

In a photographic article according to claim 9, said subbing layer consisting essentially of a mixture of chromium and silicon monoxide.

Claim 15

In a photographic article according to claim 9, said subbing layer consisting essentially of from 80 to 30 percent by weight chromium and from 20 to 70 percent by weight an oxide of silicon monoxide.