noun
photosensitive emulsion
Technical term used in photography and printing for a light-sensitive coating, typically containing silver halides.
フィルムには感光乳剤が塗布されている。
The film is coated with a photosensitive emulsion.
Compound of 感光 (kankō, 'photosensitivity') and 乳剤 (nyūzai, 'emulsion').