Printing – Inkers – Fountains
Patent
1986-02-26
1987-10-13
Fisher, J. Reed
Printing
Inkers
Fountains
101157, B41F 3104, B41F 3108
Patent
active
046990569
ABSTRACT:
An apparatus for applying printing ink onto a form roller of a printing machine which includes an enclosed ink fountain mounted adjacent the form roller. The ink fountain has a housing with a chamber formed thereon. A friction roller is rotatably and eccentrically movably mounted within the chamber of the ink fountain housing, wherein the eccentricity distance of the friction roller in relationship to the ink fountain housing and the rotation of direction and speed of the friction roller are independently adjustable. The eccentricity distance of the friction roller relative to the ink fountain housing is adjustable from a concentric position of the friction roller in the chamber of the ink fountain housing to a contact position of the friction roller with the ink fountain housing. The apparatus further includes a pair of doctor blades positioned longitudinally along the form roller for defining an ink space between the ink fountain housing and the form roller. A pressure sealing assembly is positioned between the pair of doctor blades at opposite ends thereof for forming a closed ink distribution space between the ink fountain and the form roller. An ink discharge outlet is formed in the ink fountain housing for supplying ink from the enclosed chamber of the ink fountain to the enclosed ink space adjacent the form roller, with the contact position of the friction roller with the ink fountain housing during eccentricity movement of the friction roller being adjacent the ink discharge outlet.
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