N-acyl-hydrazine compounds as contrast enhancers for black-and-w
Naphthalocyanine based compound and optical recording medium con
Naphthalocyanine derivatives and their use in optical recording
Naphthalocyanine derivatives, production thereof and optical rec
Naphthalocyanine derivatives, production thereof, optical record
Naphtholactamtrimethine dyes and optical recording medium contai
Near-infrared absorbing dyes prepared from stenhouse salts
Near-infrared sensitive phthalocyanine-polymer compositions
Negative silver halide photographic emulsion
Negative silver halide photographic light-sensitive material cap
Negative type silver halide photographic emulsions
Negative type silver halide photographic material comprising sil
Negative-acting silver halide photographic elements having exten
New dyes for use in diverse applications
Noble metal complexes to sensitize silver halide emulsions
Non-diffusing compounds capable of releasing a diffusible dye or
Non-ionic surface active compounds
Non-ionic surface active compounds
Non-ionic surface active compounds
Non-ionic surface active compounds