AUTOMATIC DENSITY SETTING APPARATUS

AUTOMATIC DENSITY SETTING APPARATUS

A device that converts copy densities into exposure times for main, flash and bump exposures required in halftone reproduction. Two separately movable scales of an evaluator are set to store intelligence mechanically corresponding to highlight and shadow densities of material to be copied. The evalu...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: HAROLD B. ARCHER, GERHARD A. NOTHMANN, DAVID A. LIEBERMAN, LEONARD S. FLORSHEIM JR
Format: Patent
Sprache:eng
Schlagworte:
COLORIMETRY
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT
MEASURING
PHYSICS
RADIATION PYROMETRY
TESTING
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Beschreibung
Zusammenfassung:A device that converts copy densities into exposure times for main, flash and bump exposures required in halftone reproduction. Two separately movable scales of an evaluator are set to store intelligence mechanically corresponding to highlight and shadow densities of material to be copied. The evaluator is then placed into a receptor which is connected electrically to a master control unit to convert the evaluator mechanical settings into appropriate electrical signals for automatically regulating the camera lights, the auxiliary flash lamp and the shutter of the camera in order to automatically and instantaneously provide properly exposed main, flash and bump exposures.