INFORMATION CARRIER

FIELD: information carrier, halftone image produced by means of structural elements, and also a structural element in form of a line. ^ SUBSTANCE: information carrier, mainly, a security, contains at least one first halftone image, which is reproduced by spaced structural elements in form of lines....

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	FRANTS PETER, SHMIDT RJUDIGER
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	BOOK COVERS BOOKBINDING DECORATIVE ARTS DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR FILES LOOSE LEAVES MOVABLE-STRIP WRITING OR READING APPARATUS PERFORMING OPERATIONS PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR SPECIAL DESIGNS OR PICTURES SPECIAL PRINTED MATTER TRANSPORTING
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Beschreibung
Zusammenfassung:	FIELD: information carrier, halftone image produced by means of structural elements, and also a structural element in form of a line. ^ SUBSTANCE: information carrier, mainly, a security, contains at least one first halftone image, which is reproduced by spaced structural elements in form of lines. Required tone gradation of halftone image is transferred due to appropriate modulation of width of line-shaped structural elements, each one of which has base line, relatively to which its width is modulated. At least within limits of one fragment of halftone image the width of line-shaped structural elements is modulated in each spot of structural elements only on one side of their corresponding base line and thus aforementioned line-shaped structural elements have even or smoothed form on one side and are width-modulated on the other side. ^ EFFECT: claimed invention ensured high degree of protection of information carrier from copying due to usage of disclosed improved linear screening method. ^ 3 cl, 34 dwg