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HYDROQUINONE FREE DEVELOPERS

IP.com Disclosure Number: IPCOM000008106D
Publication Date: 2002-May-17

Publishing Venue

The IP.com Prior Art Database

Abstract

Aqueous black-and-white photographic developing solutions are provided, which comprise: (a) an hydroquinone monosulfonic acid or salt thereof (b) one or more auxiliary developing agent of the 3-pyrazolidone type. The black-and-white developing compositions also contain usual components such as inorganic and organic antifoggants, preservatives or antioxidants, buffers, sequestering agents. The B&W compositions can further comprise a silver halide solvent such as a thiocyanante, hardeners such as glutaraldehyde, development restrainers, development accelerators, swelling control agents, sludge control agents and stabilizing agents. The B&W developers can be used for processing industrial radiographic materials.