APPARATUS AND METHOD FOR INSPECTING PRINTED MATTER

PROBLEM TO BE SOLVED: To provide an apparatus and a method for inspecting a printed matter which can accurately manage a physical amount of the printed matter using a specific physical ink such as, for example, a magnetic ink, and which can accurately inspect a non-defective or defective of the matt...

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Bibliographische Detailangaben
Hauptverfasser:	IGARI SEIJI, SAITO TSUTOMU
Format:	Patent
Sprache:	eng
Schlagworte:	BOOK COVERS BOOKBINDING CALCULATING CHECKING-DEVICES COLOUR PRINTING COMPUTING COUNTING DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR FILES HANDLING OF COINS OR OF PAPER CURRENCY OR SIMILAR VALUABLEPAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING,DISPENSING, CHANGING OR DEPOSITING IMAGE DATA PROCESSING OR GENERATION, IN GENERAL INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES LINING MACHINES LOOSE LEAVES MEASURING MOVABLE-STRIP WRITING OR READING APPARATUS PERFORMING OPERATIONS PHYSICS PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR PRINTING PRINTING MACHINES OR PRESSES PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES SPECIAL PRINTED MATTER STAMPS TESTING TRANSPORTING TYPEWRITERS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an apparatus and a method for inspecting a printed matter which can accurately manage a physical amount of the printed matter using a specific physical ink such as, for example, a magnetic ink, and which can accurately inspect a non-defective or defective of the matter without contact. SOLUTION: In the printed matter 1 using the magnetic ink, a reference print pattern 4 of the magnetic ink is formed on a marginal part 3 of the matter 1. The apparatus for inspecting the printed matter 1 comprises a line sensor 7 for simultaneously acquiring optical image of the part 3 and a main printed part 5, and a magnetic sensor 8 provided near the sensor 7 to acquire a magnetic content of the pattern 4 of the marginal part 3. The method for inspecting the printed matter 1 comprises the steps of acquiring a magnetic content and an optical density level of the main printed part 5 while acquiring the magnetic content and the optical density level, and hence acquiring the magnetic content of the printing pattern of the part 5 from a correlation between the magnetic content of the pattern 4 and the optical density level. The method further comprises the step of deciding the non-defective or defective of the matter 1 based on the acquired magnetic content.