IPC Subgroup
G03B 27/72 Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus
Introduced: September 1968
Last revised: January 2006
Full Title
Photographic printing apparatus > Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus
Classification Context
- Section:
- PHYSICS
- Class:
- PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- Subclass:
- APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
3 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 27/8 in dependence upon automatic analysis of the original