Inventions, discoveries reported last week included:
In London, a "master-film" bearing letters and figures in many styles of type, which, when operated by a keyboard, typewriter-wise, fractionally exposes a sensitized base to desired characters, where they were photographed. The base thus articulated, corresponding in function to type set by a linotype machine, can be inked and run off on paper. Different sizes in type are obtained by automatic adjustment of the focus of the camera lens.
A single spool of master film, 3 in. wide, 2 in. in diameter, contained the equivalent of 2,700...
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