Method and device for characterising photographic base materials

A description is given of a method and a device for detecting the photographically relevant surface characteristics of a flat base material by means of an electromechanical feeler device by means of which the surface of the flat base material which can be, e.g., photographic paper, with or without a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	BERNHARD,.KERKHOFF,ALOIS
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	AUXILIARY PROCESSES IN PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES PHOTOGRAPHY PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES PHYSICS TESTING
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Beschreibung
Zusammenfassung:	A description is given of a method and a device for detecting the photographically relevant surface characteristics of a flat base material by means of an electromechanical feeler device by means of which the surface of the flat base material which can be, e.g., photographic paper, with or without a plastic or other coating, is scanned under light pressure, the electrical signals obtained being filtered with the aid of a bandpass filter, which is transparent in the wavelength region of 1.8 - 4 mm, and subsequently processed. The feeler device comprises a firm support for the specimen and a vertically movable probe which presses against the specimen resting on the support, as well as a signal evaluation device with the bandpass filter.