B&H model C
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This Bell&Howell model C is an additive colour printer with a RGB (red-green-blue light) lamp house. This printer operates now with a controller that is designed by James Rubery (in accordance with the original manual). This controller is to operate the 3 valves in RGB in 0 to 50 steps each. 0 is closed and 50 is completely open. 12 steps is 1 stop
The gate has the options
- composite = full image including optical sound outline
- picture = only the image, no outline framing
- sound pos = only the optical sound part when printed as positive from a negative
- sound rev = only the optical sound part when printed as positive from a positive. The framing is a fraction bigger than sound pos to avoid a white line in between image and sound track.