METHOD FOR INSPECTING QUALITY OF PRINTING PAPER SURFACE AND APPARATUS THEREFOR

METHOD FOR INSPECTING QUALITY OF PRINTING PAPER SURFACE AND APPARATUS THEREFOR

PURPOSE:To enable the size-minimization and simplification of an inspection apparatus as well as the time-shortening of inspection to be achieved. CONSTITUTION:The method is characterized as detecting the density every picture element of accepted paper surface 101, manufacturing an acceptable histog...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: OKAMOTO SUMIYUKI, KOBARI TERUO, HIROMASA KOYA
Format: Patent
Sprache:eng
Schlagworte:
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
LINING MACHINES
MEASURING
PERFORMING OPERATIONS
PHYSICS
PRINTING
PRINTING MACHINES OR PRESSES
STAMPS
TESTING
TRANSPORTING
TYPEWRITERS
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Beschreibung
Zusammenfassung:PURPOSE:To enable the size-minimization and simplification of an inspection apparatus as well as the time-shortening of inspection to be achieved. CONSTITUTION:The method is characterized as detecting the density every picture element of accepted paper surface 101, manufacturing an acceptable histogram comprising the number of picture elements every density gradation on the basis of data of the density 102, detecting density every picture element of the paper surface to be inspected 103, manufacturing a histogram to be inspected comprising the picture element every density gradation on the basis of data of the density 104, detecting difference by comparing the histogram to be inspected with the acceptable histogram 105, and judging the quality of the paper surface to be inspected on the basis of the differentials.