CPC Subgroup
G03B 27/72 Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus
Full Title
Photographic printing apparatus > Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus
6 direct subcodes
Child Classifications
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- G03B 27/73 Controlling exposure by variation of spectral composition, e.g. multicolor printers
- G03B 27/74 Positioning exposure meters in the apparatus
- G03B 27/80 in dependence upon automatic analysis of the original (G03B27/73 takes precedence)