Photocomposition machine

Details Photocomposition machine Photocomposition machine

1974-11-14

1976-06-29

Schaefer, Robert K.

Electricity: motive power systems

Positional servo systems

Digital or numerical systems

318608, 354 10, 354 15, G05B 1918, G05B 102, G03B 1706

Patent

active

039671771

ABSTRACT:
A system for intermixing large and small size type in a photocomposer by coordinating speed of a disc font storage medium with the size of type to be set. The speed of the disc drive motor is controlled by pulses of power to the motor. A signal frequency which is used to produce the pulses simultaneously controls the speed of the disc driven motor and a counter which is allowed to count out only at specified times in relation to the matrix relative position and thereby inform a controller of the matrix position.

REFERENCES:
patent: 3590705 (1971-06-01), Moyroud
patent: 3707902 (1973-01-01), Purdy et al.
patent: 3721165 (1973-03-01), Knoll
patent: 3754452 (1973-08-01), Walstrom
patent: 3858100 (1974-12-01), Bussi et al.

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