Title: Exposure control system for photocomposition machines

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.

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Inventors: Booth, Thomas Allan (Flanders, NJ, US)
Scholten, Frank Lynn (Katonah, NY, US)

Application Number: 654930
Filing Date: 1976-02-03
Publication_date: 1977-09-06
Assignee: Addressograph Multigraph Corporation (Cleveland, OH)
Primary Class(es): 355/69 396/549, 396/559
Other Classes:
US Patent Ref:

3590705	Jul, 1971	Moyroud	354/10.
3748036	Jul, 1973	Ogawa	355/69.
3815992	Jun, 1974	Ogawa	355/69.

Other Refs:
Primary Examiner: Adams, Russell E.
Assistant Examiner:
Attorney: Pyle; Ray S.