Printing – Antismut device – Anti-offset material application
Patent
1985-07-01
1986-12-02
Eickholt, E. H.
Printing
Antismut device
Anti-offset material application
101329, 101352, 101 91, B41L 4746
Patent
active
046256440
ABSTRACT:
An offset printing press includes a blanket cylinder defining a first cylindrical surface having a radius r.sub.1 and a recessed section. A blanket is tightly stretched around the blanket cylinder and defines a second cylindrical surface having a radius r.sub.2 greater than r.sub.1. An impression cylinder is aligned with the blanket cylinder to define a printing interface between the blanket cylinder and the impression cylinder to receive paper sheets and to transfer an inked image from the blanket to the paper sheets. Drive means defines and maintains a fixed phase angle between the blanket cylinder and the immpression cylinder and rotates both cylinders at an equal angular velocity and in complementary directions to transfer images to the paper sheets. The number imprinting apparatus interfaces with the offset printing press and includes a number head having a body and a number imprinting surface. The body of the number head is retained within the recessed section of the blanket cylinder with the number imprinting surface aligned to contact the paper sheets as the number head is rotated through the printing interface. Synchronized inking means is located at a first angular position around the blanket cylinder and is angularly spaced apart from the printing interface. The synchronized inking means includes an ink transfer device, spacing means and displacing means. The spacing means maintains a gap between the ink transfer device and the blanket as the blanket is rotated past the ink transfer means. The displacing means periodically displaces the ink transfer device toward the blanket cylinder as the recessed section of the blanket cylinder is rotated past the ink transfer means. These periodic displacements of the ink transfer means cause the ink transfer means to contact the number head and transfer ink to the number imprinting surface of the number head.
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patent: 4559873 (1985-12-01), Godlewski
Bouliane Mark H.
Rohsner John D.
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