Printing – Selective or progressive – Numbering
Patent
1988-07-25
1989-12-26
Fisher, J. Reed
Printing
Selective or progressive
Numbering
101137, 101177, 101247, B41F 706, B41F 710, B41F 1340
Patent
active
048890510
ABSTRACT:
A detachable printing unit for offset printing presses, which can be incorporated during their manufacture or fitted to existing presses, said unit being defined in that it is composed of an independent inking module 16 (FIG. 3) comprising all the components required for effecting in chronological operating order the moistening and inking of an offset plate ready for printing on a blanket, and a likewise independent detachable blanket cylinder 7C. One embodiment of the invention is defined in that the numbering device with which the press is equipped (FIG. 6, View B) is replaced by the blanket cylinder (FIG. 7, View B) of the printing unit working with the inking module 16 (FIG. 3), and use is made of the drive mechanism 8 (FIG. 6) and pressure adjustment mechanism 9B provided in the press to obtain for each printing cycle, instead of the numbering, an additional color obtained by color superimposition with the aid of the pressure cylinder 4. In the other form of the invention the same inking module, disposed in another position in the press, works conjointly with the blanket cylinder 3 of the press to enable for each printing cycle an additional color and optionally letterpress numbering or an additional letterpress color to be achieved.
REFERENCES:
patent: 4111120 (1978-09-01), Paulson
patent: 4426929 (1984-01-01), Fujisawa
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