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US4142899A Color diffusion transfer photographic unit 失效
彩色扩散转印照相机

Color diffusion transfer photographic unit
摘要:
The present invention relates to a color diffusion transfer photographic unit containing a silver halide photosensitive element, and an image receiving element wherein said unit contains a copolymer containing two monomers. The first monomer is noted for having quaternary nitrogen while the second monomer is required to have at least one fluorine atom.
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