发明授权
US3598587A Photographic physical developers 失效
摄影物理发展商

Photographic physical developers
摘要:
A NOVEL PHYSICAL DEVELOPER FOR PALLADIUM LATENT IMAGES COMPRISES A REDUCIBLE HEAVY METAL SALT, A COMPLEXING AGENT FOR THE HEAVY METAL IONS, A REDUCING AGENT FOR THE HEAVY METAL IONS AND A CARBOXYLIC ACID COMPLEXING AGENT HAVING A HIGH DEGREE OF SPECIFICITY TOWARDS PALLADIUM IONS.
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