Water cooled ink roller for printing presses

Details Water cooled ink roller for printing presses Water cooled ink roller for printing presses

1978-02-17

1980-01-15

Fisher, J. Reed

Printing

Inkers

Roller

165 90, 34124, B41F 3126, F28D 1102, F28F 502, B21B 2706

Patent

active

041832981

ABSTRACT:
An ink roller for a printing press having a cylindrical outer shell presenting a roller surface and having a control fluid-displacing core, a hollow cylindrical partition being interposed between the shell and the core to define inner and outer annular passageways connected in series having respective inlet and outlet openings. A source of cooling fluid is connected to the inlet opening so that a feed stream of cooling fluid flows longitudinally through the inner passage and turns around to form a cooling stream flowing in counterflow relation through the outer passage. The cylindrical partition is formed of conductive material so that heat absorbed at a given region of the roller surface by the cooling stream flows radially inwardly for absorption by the feed stream at substantially the same rate, so that the cooling stream has only minimum net gain or loss of heat; this tends to equalize the temperature along the length of the cooling stream and hence along the length of the roller surface. In the preferred embodiment of the invention the thermal conductivity of the cylindrical partition in the radial direction is so varied as a function of length that the rate of heat transfer radially through the partition from the cooling stream to the feed stream over each unit of length of the partition is substantially equal.

REFERENCES:
patent: 1763689 (1930-06-01), Drake
patent: 1837562 (1931-12-01), Mayer
patent: 2875985 (1959-03-01), Hold
patent: 2972298 (1961-02-01), De Marchi et al.
patent: 3141408 (1964-07-01), Bernardi et al.
patent: 3237685 (1966-03-01), Heisterkamp
patent: 3498591 (1970-03-01), Calkins
patent: 3838734 (1974-10-01), Kilmartin
patent: 4090553 (1978-05-01), Beghin

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