Gravure printing press with encapsulated ink applicator and meth

Details Gravure printing press with encapsulated ink applicator and meth Gravure printing press with encapsulated ink applicator and meth

1997-10-06

2000-09-19

Burr, Edgar

Printing

Inkers

Fountains

101365, B41F 3105

Patent

active

061195952

ABSTRACT:
A pair of doctor blade assemblies extend from upper and lower ends of a housing. Seal assemblies having compressible seals, seal spacers and retaining plates are disposed at opposite ends of the housing and extend between the upper and lower doctor blade assemblies. The doctor blade assemblies, the seal assemblies, the inner surface of the housing and the outer surface of the transfer roll define a fully encapsulated applicator chamber. The upper blade assembly includes a doctor blade positioned as a trailing edge blade, a blade support for clamping the blade and for securing the blade to the housing, a blade seal positioned for sealing the ink chamber and a pneumatic assembly for adjusting the pressure of the trailing doctor blade against the transfer roll. The lower blade assembly includes a doctor blade positioned as a trailing edge blade and a blade support for clamping the blade and for securing the blade to the lower end of the housing. The angle of inclusion formed between the doctor blades is at least about 150 degrees. The plates, seals and spacers of the seal assemblies have arcuate front edges which follow along and abut ends of the transfer roll. An adjustable slide mechanism moves the housing, the blade assemblies and the end seal assemblies into and out of contact with the transfer roll. Pneumatic cylinders connected to the upper blade assembly apply precise wiping pressure. Knobs allow turning connecting screws for minor positioning adjustments.

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