DOCTOR BLADE FOR GRAVURE PRINTING

PURPOSE:To prevent the burr at the edge of a blade and the like from developing and enhance the stability on gravure printing by a method wherein stocks equipped with the difference in hardness or in wear are laminated to each other at the rear surface of the edge of the doctor blade. CONSTITUTION:I...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KAMETAKA ATSUSHI, TANIMOTO YOSHIHISA, SHIMOMURA KYOICHI, HATTA KOJI, MIYAZAKI YASUNORI
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:PURPOSE:To prevent the burr at the edge of a blade and the like from developing and enhance the stability on gravure printing by a method wherein stocks equipped with the difference in hardness or in wear are laminated to each other at the rear surface of the edge of the doctor blade. CONSTITUTION:In a doctor 1 for gravure printing, the part B' wears without developing burr at the same wearing rate as the wear the part C' due to the resin layer 5 coated on steel material 3, which acts as an original doctor and has the Vickers hardness of 580. Next, as for the resin coating layer 5, due to its low hardness, the layer 5 easily wears together with the wear of the surface A'. At the same time, the tip part E' wears evenly even under the low doctor pressure or falls off in fine fragments. Since the doctor blade 1 has two-layered structure so as to realize even wear at both its front surface side and its rear surface side by coming into contact with a gravure plate, the tip on the rear surface side also evenly wears, resulting in developing no burr at the tip part and accordingly preventing printing troubles such as feathering, arrow mark and the like from developing in printing.