CPC Subgroup
G03B 27/52 Details
Full Title
Photographic printing apparatus > Projection printing apparatus, e.g. enlarger, copying camera > Details
10 direct subcodes
Child Classifications
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- G03B 27/53 Automatic registration or positioning of originals with respect to each other or the photosensitive layer
- G03B 27/54 Lamp housings; Illuminating means
- G03B 27/56 Mounting enlarger head on column
- G03B 27/58 Baseboards, masking frames, or other holders for the sensitive material (G03B27/53 takes precedence )
- G03B 27/62 Holders for the original (G03B27/53 takes precedence )
- G03B 27/66 specially adapted for holding half-tone screens
- G03B 27/68 Introducing or correcting distortion, e.g. in connection with oblique projection
- G03B 27/70 Reflectors in printing beam