Automatic base line correction for p/t (photocomposing machine)

Details Automatic base line correction for p/t (photocomposing machine) Automatic base line correction for p/t (photocomposing machine)

1975-07-24

1977-08-02

O'Connor, Edna M.

354 7, G03B 1500

Patent

active

040400662

ABSTRACT:
A method of using photocomposition technology to insure all characters falling on a common text base line when multiple lenses are used to change point size in a line of text. Each lens is tested by deliberately setting the flash circuit to be armed by its dedicated timing mark to flash before the character is properly aligned with the optical system. Then from a memory record produced by a previous test program, the flash is delayed by the count in memory. Therefore, the mechanical positioning of a plurality of lenses in a turret may be only reasonably accurate, and not be responsible for misplacing characters off of the text base line when lenses are intermixed during composition of that base line of text.

REFERENCES:
patent: 3017811 (1962-01-01), O'Brien
patent: 3422736 (1969-01-01), Moyroud et al.
patent: 3631775 (1972-01-01), Lidd
patent: 3638541 (1972-02-01), Lew et al.
patent: 3693516 (1972-09-01), Aron et al.

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