Photography Development and Fixing Process

Flashcards covering key components and functions of photography development and fixing processes.

Acetic Acid

Component of fixer that neutralizes the developer and stops its action. Activator

Ammonium Thiosulfate

Fixing agent that removes undeveloped silver halide from emulsion.

Potassium Alum

Hardener that stiffens and shrinks emulsion.

Sodium Sulfite

Preservative that maintains chemical balance.

Acetate

Buffer that maintains proper pH.

Boric Acid

Sequestering agent that removes aluminum ions.

Water( Fixer)

Solvent that dissolves other components.

Phenidone

Developing agent reducing agent that produces shades of gray rapidly.

Hydroquinone

Developing agent reducing agent that produces black tones slowly.

Sodium Carbonate

Buffering agent that helps swell gelatin and control pH.

Potassium Bromide

Restrainer and anti-fog agent that keeps unexposed crystals from being chemically attacked.

Gluteraldehyde

Hardener that controls emulsion from swelling and aids archival quality.

Chelates

Sequestering agent that removes metallic impurities and stabilizes developing agent.

Wetting

Swelling of the emulsion to permit subsequent chemical reaction.

Stop Bath

Termination of development and removal of excess chemical from emulsion.

Fixing

Removal of remaining silver halide and hardening of gelatin.

Washing

Removal of excess chemicals.

Drying

Removal of water and preparation of radiograph for viewing.