Use of hydroquinone esters as blocked competing developers...

Use of hydroxyindane to prevent bleaching of dye images

Use of indolenine-cyanine dyestuffs

Use of ketal blocked quinones to reduce post-process d-min...

Use of ketogluconates in photography

Use of manganous compounds in image transfer elements

Use of oxalic acid or an acid salt thereof in color transfer...

Use of oxazolinone-2 derivatives with a mercapto group in...

Use of partially oxidized stannous ion to form noble metal...

Use of photosensitive compositions of matter for electroless...

Use of thiazoline thione antifoggants with a dye- enhanced...

Use of trans-epindolidione as a photosensitive pigment in...

Use of volatile carboxylic acids in improved photoresists...

Use of zinc salts to increase dye stability in silver halide...

Uv-absorbing optical brightening agents

Vacuum treatment of coated, direct-positive, silver halide...

Variable density light filtering means utilizing leuco...

Variable density light filtering system

Very sensitive diazo photographic reproduction process

Vesicular composition, element and process