Radiographic silver halide films having incorporated developer
OwnerAlan S. Fitterman, Robert E. Dickerson +2inventors
InventorsAlan S. Fitterman, Robert E. Dickerson, Mark P. Pavlik, Lynn M. Tremblay
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Abstract
Radiographic silver halide materials coated onto a support contain a portion of the developer chemistry incorporated within the radiographic film. The remainder of the developer chemistry is contained in a developer solution. Use of a reflective support permits the developed materials to be viewed without a light box.
Claims24
A reflective radiographic silver halide film comprising a reflective support having first and second major surfaces, the reflective radiographic film having disposed only on the first major reflective support surface, one or more hydrophilic colloid layers including a silver halide emulsion layer, the radiographic film also containing in one or more of the hydrophilic colloid layers, an incorporated black-and-white developing agent and a co-developing agent, the mole ratio of the developing agent to the silver in the silver halide emulsion being equal to or greater than about 0.25:1 and less than about 0.7:1.
A reflective radiographic silver halide film comprising a reflective support having first and second major surfaces, the reflective radiographic film having disposed only on the first major reflective support surface, one or more hydrophilic colloid layers including a silver halide emulsion, the radiographic film also comprising in one or more of the hydrophilic colloid layers, an incorporated black-and-white developing agent and a co-developing agent, wherein the developing agent is coated at from about 1 to 20 mg/dm2.
A radiographic silver halide film comprising a transparent support having first and second major surfaces, and having disposed on both major surfaces of the support, one or more hydrophilic colloid layers including a silver halide emulsion layer, the radiographic film also including in one or more of the hydrophilic colloid layers, an incorporated black-and-white developing agent and a co-developing agent, the mole ratio of the developing agent to the silver in the silver halide emulsion being equal to or greater than about 0.25:1 and less than about 1.5:1.
A radiographic silver halide film comprising a transparent support having first and second major surfaces, and having disposed on both major surfaces, one or more hydrophilic colloid layers including a silver halide emulsion layer, the radiographic film also containing in one or more of the hydrophilic colloid layers, an incorporated black-and-white developing agent and a co-developing agent, wherein the developing agent is coated at from about 1 to 20 mg/dm2.
A method of providing a black-and-white image, comprising:
- (A) contacting an exposed black-and-white silver halide film comprising an incorporated black-and-white developing agent and co-developing agent with a developer solution comprising a black-and white developing and co-developing agent, the incorporated developing agent being present in an amount of from about 1 to about 20 mg/dm2, and the developer being present in the developer solution in an amount of from about 1 to about 10 g/l;
- and
- (B) contacting the exposed silver halide film with a solution comprising a fixing agent.
A radiographic kit comprising:
- one or more black-and-white radiographic silver halide films comprising a support that has first and second major surfaces, the radiographic film having disposed on at least one support major surface, one or more hydrophilic colloid layers including a silver halide emulsion layer, the radiographic film also containing an incorporated black-and-white developing agent and co-developing agent in one or more of the hydrophilic colloid layers;
- one or more solutions of developer and co-developer;
- and
- one or more solutions of fixer free of developer and co-developer.
A radiographic kit comprising:
- a radiographic silver halide film comprising a support that has first and second major surfaces, the radiographic film having disposed on at least one support major surface, one or more hydrophilic colloid layers including a silver halide emulsion layer, the radiographic film also containing an incorporated black-and-white developing agent in one or more of the hydrophilic colloid layers;
- a developer composition comprised of concentrations of less than 50 mmol/l of a primary developing agent, less than 2.5 mmol/l of a co-developing agent, and less than 0.075 mmol/l of an antifoggant and having a pH of less than about 12;
- a fixing composition comprising less than 350 mmol/l of a fixing agent and less than 25 mmol/l of a hardening agent and having a pH in the range of about 4.0 to about 5.5;
- and
- a phosphor screen.
Dependencies are inferred from the claim text.