Fuji Photo Film Company, Limited

Koji Matsuo

Masaki Okazaki

Takashi Nakamura

Yoji Okazaki

Haruhiko Iwano

Makoto Ishihara

Nobuhiko Uchino

Masaharu Yamada

A process for treating a photographic processing waste solution which comprises:

Process for treating photographic processing waste solution

A process for treating a photographic waste liquid containing a used processing liquid resulting from a processing step having a bleaching ability or a fixing ability in the processing of a silver halide photographic material which process comprises adding a polymer-complex-forming agent to the waste liquid in an amount in the range of from 0.5 to 4 equivalents to a metal contained in the waste liquid to thereby form a polymer-metal complex and then filtering off the polymer-metal complex with a mono-membrane filter having a pore size of 0.05 to 10 .mu.m to thereby remove the metal. A device for use in practicing the process is also disclosed.

Process for treating photographic waste water

A nonlinear optical material comprising a compound represented by the following general formula (I): ##STR1## wherein R and R' are each an alkyl group, an aryl group, an aralkyl group or a hetero ring, and a method of converting the wavelength of laser light using the organic nonlinear optical material.

Organic nonlinear optical material and method of converting the

A molecular crystal comprising a molecule represented by formula (I) shown below: ##STR1## The crystal has high blue light transmittance and non-linear optical characteristics.

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Kanagawa, Japan

Koji Matsuo