Flash exposure

Flash exposure

In full frame imagewise exposure on a moving photoconductive belt using flash illumination of an opaque original, a shadow cast by the lens 32 is removed by means of auxiliary non-imagewise exposure (before, during or after the imagewise exposure). A predetermined area of the belt may be illuminated...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: RICHARD FRED LEHMAN, JEROME EDWARD MAY, JAMES DUNLAP REES, ROBERT WILLIAM GUNDLACH
Format: Patent
Sprache:eng
Schlagworte:
ACCESSORIES THEREFOR
APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
MAGNETOGRAPHY
PHOTOGRAPHY
PHYSICS
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:In full frame imagewise exposure on a moving photoconductive belt using flash illumination of an opaque original, a shadow cast by the lens 32 is removed by means of auxiliary non-imagewise exposure (before, during or after the imagewise exposure). A predetermined area of the belt may be illuminated from the lamp housing as shown (during the imagewise exposure) or independently by means of an LED array (50, Fig. 1) at a location spaced from the imagewise exposure station.