Printing – Inkers – Fountains
Patent
1992-05-20
1993-07-13
Fisher, J. Reed
Printing
Inkers
Fountains
1014501, B41F 3104, B41F 3108, B41L 2706
Patent
active
052263649
ABSTRACT:
An ultrasonic printing fluid input apparatus and method for use in a lithographic printing press. The system has a rotatable roller 20 having at least an oleophilic and hydrophobic surface and a source 100 of printing fluid. A metering blade 62 for applying a thin film of printing fluid to the surface of the metering roller 20 has at least one device 63 for imparting ultrasonic vibrations to the metering blade 62 such that a thickness of the thin film of printing fluid is a function of the amplitude of ultrasonic vibrations. A control 65 for varying the amplitude of ultrasonic vibrations is connected to the device 63 for imparting ultrasonic vibrations. A fixed end of the metering blade 62 is attached to a stationary support 42 via a decoupling material 65. An printing fluid removal device 73 is also provided for substantially removing a return printing fluid film on the oleophilic and hydrophobic surface of the metering roller 20.
REFERENCES:
patent: 3087184 (1963-04-01), Ljungquist
patent: 3113225 (1963-12-01), Kleesattel et al.
patent: 3389655 (1968-06-01), Lorenz et al.
patent: 3964386 (1976-06-01), Dini
patent: 5054392 (1991-10-01), Greenwood
patent: 5121689 (1992-06-01), Fadner
Fisher J. Reed
Hamann H. F.
Patti C. B.
Rockwell International Corporation
Sewell V. L.
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