Offset rotary press

Details Offset rotary press Offset rotary press

1986-02-11

1987-03-24

Fisher, J. Reed

Printing

Rolling contact machines

Rotary

101220, B41F 522, B41F 712

Patent

active

046516417

ABSTRACT:
The known offset rotary press of the type that at least a pair of printing cylinders consisting of a plate cylinder and a blanket cylinder are disposed in juxtaposition adjacent to each other, and that the adjacent plate and blanket cylinders are rotated at the same revolution speed in the opposite directions to each other through gears having the same pitch circle diameter and the same number of teeth, is improved in that in the case where one of the pair of printing cylinders having a slightly larger finished cylinder diameter than that of another printing cylinder is positioned upstream on the side of power transmission with respect to the printing cylinder having the smaller finished cylinder diameter, an intermediate gear connected to a drive source is rotatably mounted on a cylinder shaft of the printing cylinder having the larger finished cylinder diameter on which a first gear is fixedly mounted also, and in that the intermediate gear and the first gear are respectively meshed with a second gear fixedly mounted on a cylinder shaft of the printing cylinder having the smaller finished cylinder diameter.

REFERENCES:
patent: 2937591 (1960-05-01), Wagner
patent: 3037396 (1962-06-01), Martin
patent: 3299801 (1967-01-01), Bishop
patent: 3407727 (1968-10-01), Fischer
patent: 3477370 (1969-11-01), Fischer
patent: 3496865 (1970-02-01), Fischer
patent: 3742849 (1973-07-01), Greiner et al.

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