Inking unit with hollow microballoons in surface and method of making
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United States of America Patent
Stats
-
Jul 23, 1991
Grant Date -
N/A
app pub date -
Mar 9, 1989
filing date -
Oct 5, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Ink metering rollers include a core roller and a synthetic resin matrix layer formed on the periphery of the core roller. The matrix layer has a number of hemi-spherical depressions formed in its surface and also a number of hollow microballoons embedded therein. As the matrix layer of the ink metering roller is gradually worn, the hollow microballoons open in the surface of the matrix layer thereby forming spherical depressions. Hence, the spherical depressions are always distributed uniformly in the surface of the matrix layer, and hold a prescribed amount of ink. The ink metering roller therefore uniformly transfers and distributes a desired amount of ink onto the entire periphery of inking rollers associated with keyless printing machines.
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