Ink chamber doctor blade for a printing machine

Details Ink chamber doctor blade for a printing machine Ink chamber doctor blade for a printing machine

1997-07-31

1999-01-26

Burr, Edgar

Printing

Inkers

Fountains

1013501, 101208, 101210, B41F 3102

Patent

active

058627561

ABSTRACT:
An ink chamber doctor blade for a printing machine, comprising a doctor blade box (10) forming an ink chamber, at least two doctor blade knives (11, 12) attached to the doctor blade box (10) and bounding an opening (13) which, during operation, points to the outer circumference of a printing cylinder or an ink transfer roller and extends over the length of the doctor blade box (10), two front end covers (2) detachably fitted to the respective front end of the doctor blade box (10) and sealing the ink chamber, and means for supplying and discharging ink, each front end cover (2) comprising a rigid cover basic body (25) and a sealing element held by it and coming to abut against the doctor blade knives (11, 12) and against the section of the outer circumference of the printing cylinder or the ink transfer roller located between these doctor blade knives, wherein the sealing element is formed by a flat two-layer sealing plate (20), the first layer (21) of which facing the doctor blade box (10) is made of a soft-elastic flexible material and the second layer (22) of which facing away from the doctor blade box (10) is made of a low-elastic solid material, and that in mounted condition the sealing plate (20) is loaded with a first force pressing it against the front end of the doctor blade box (10) and against the front end of the doctor blade knives (11, 12) and with a second force pointing in the direction of the outer circumference of the printing cylinder or the ink transfer roller.

REFERENCES:
patent: 4414900 (1983-11-01), Kraus et al.
patent: 4559871 (1985-12-01), Kutzner et al.
patent: 4590855 (1986-05-01), Schommer et al.
patent: 5243907 (1993-09-01), Weishew
patent: 5253582 (1993-10-01), Orth et al.
patent: 5410961 (1995-05-01), DeNicola et al.

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