Exposure control system for photocomposition machines

Details Exposure control system for photocomposition machines Exposure control system for photocomposition machines

1977-09-02

1980-01-15

Adams, Russell E.

Photocopying

Contact printing

Light boxes

355 67, 355 69, B41B 1300

Patent

active

041836383

ABSTRACT:
In photocomposition, when change in point size is made, rather than change iris opening, a programmable flash intensity provides the required irradiance. Iris setting is made only to compensate for film or paper sensitivity, flash lamp efficiency, and energy storage capacitor variations.

REFERENCES:
patent: 3968501 (1976-07-01), Gilbert
patent: 4051486 (1977-09-01), Ebner et al.

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