MONITORING DEVICE OF HIGH-SPEED PRINTED MATTER

PURPOSE:To monitor surely and satisfactorily printed matter and to suppress generation of defectives by rotating a polyhedral prism in synchronization with the speed of the printed matter thereby stopping temporarily each print of the high speed printed matter. CONSTITUTION:The image of printed matt...

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Bibliographic Details
Main Author GOTOU TADASHI
Format Patent
LanguageEnglish
Published 14.01.1985
Edition4
Subjects
LINING MACHINES
MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
PERFORMING OPERATIONS
PHYSICS
PRINTING
PRINTING MACHINES OR PRESSES
STAMPS
TESTING
TRANSPORTING
TYPEWRITERS
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Summary:PURPOSE:To monitor surely and satisfactorily printed matter and to suppress generation of defectives by rotating a polyhedral prism in synchronization with the speed of the printed matter thereby stopping temporarily each print of the high speed printed matter. CONSTITUTION:The image of printed matter 2 shown by an arrow (a) is reduced by an objective lens 4 and is formed as the image moving from A' to B' in a position Y when the printed matter moves in the direction of an arrow from A to B and C. When a prism optimum for the size of the reduced image is rotated in the direction of an arrow (c) in synchronization, the image on the Y-plane magnified by an eyepiece 5 can be observed as if the image is still. The substantial and meticulous observation is thus made possible and therefore the fine printing defect is easily identifiable.
Bibliography:Application Number: JP19830113878