Printing press having doctor blade with integral tape seal there

Details Printing press having doctor blade with integral tape seal there Printing press having doctor blade with integral tape seal there

1994-12-15

1996-06-11

Funk, Stephen

Printing

Inkers

Roller

101169, 101366, B41F 3104

Patent

active

055245404

ABSTRACT:
A doctor blade for a printing press includes a thin unbroken doctoring plate having a rear portion secured to a chamber housing of a printing press and a front portion with a doctoring edge which contacts an outer surface of an ink roll to meter ink thereto; and a thin sealing layer secured across one surface of the thin doctoring plate at a rear portion thereof and spaced away from the doctoring edge so as to be out of contact with the outer surface of the ink roll when the doctor blade is secured in the printing press, the sealing layer being made from a closed cell foam and having a thickness in the range from 0.005 to 0.125 inch, the thin sealing layer being sandwiched between the thin doctoring plate and the chamber housing to prevent migration of ink therebetween.

REFERENCES:
patent: 2313830 (1943-03-01), Lundbye
patent: 2837024 (1958-06-01), Dougan
patent: 3788219 (1974-01-01), Gallagher
patent: 3855927 (1974-12-01), Simeth
patent: 3866266 (1975-02-01), Dunlap
patent: 4030410 (1977-06-01), Zimmer
patent: 4078486 (1978-03-01), Moser
patent: 4184429 (1980-01-01), Widmer
patent: 4503770 (1985-03-01), Cox
patent: 4538518 (1985-09-01), Dahlgren
patent: 4676160 (1987-06-01), Linska
patent: 4730416 (1988-03-01), Eames
patent: 4744571 (1988-04-01), Geberth, Jr.
patent: 4754701 (1988-07-01), Batke et al.
patent: 4773327 (1988-09-01), Moetteli
patent: 4981900 (1991-01-01), Sugawara
patent: 5078061 (1992-01-01), Messerschmitt

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