Production method of silver halide photographic emulsion and...

Fluid handling – Processes – With control of flow by a condition or characteristic of a...

Reexamination Certificate

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C422S129000, C422S224000, C422S225000, C396S567000, C396S568000, C396S626000, C396S628000, C430S569000

Reexamination Certificate

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10995121

ABSTRACT:
At least one of a nucleus forming process, a nucleus growing process, a chemical sensitizing process, and a spectral sensitizing process for producing a silver halide photographic emulsion is performed by using a microreactor. A minute region of the microreactor is used to precisely perform a reaction of nucleus formation. A condition under which host grains are allowed to react with newly supplied silver halide nuclei is made uniform to cause uniform crystal growth. A predetermined quantity of molecules for chemical sensitization is doped in a crystal lattice of a nucleus of silver halide to effect a sensitizing process. Alternatively, a spectral sensitizing process in which a single molecular layer of a spectral sensitizer is uniformly adsorbed on a silver halide nucleus grain surface is securely carried out.

REFERENCES:
patent: 5985535 (1999-11-01), Urabe
patent: 6048906 (2000-04-01), Ernst et al.
patent: 6605422 (2003-08-01), Urabe
patent: 6682882 (2004-01-01), Ikari et al.
patent: 0 744 653 (1996-11-01), None
patent: 10-239787 (1998-09-01), None

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