Recorders – Performance of multiple functions of steam and gas engines – Pressure responsive element
Patent
1989-12-15
1991-12-24
Hartary, Joseph W.
Recorders
Performance of multiple functions of steam and gas engines
Pressure responsive element
346140R, B41J 221
Patent
active
050756893
ABSTRACT:
In the representative embodiments of the invention described in the specification, an ink jet head has a series of aligned arrays of ink jet orifices arranged to project drops of different colored inks in sequence to the same location on a substrate during each scan of the ink jet head adjacent to the substrate. The spacing of the orifices in each aligned array and the speed of the ink jet head during the scanning are arranged so that all the ink drops applied at the same location on the substrate are applied in a time period of no more than about 100 milliseconds and preferably no more than 50 milliseconds. Moreover, to avoid banding the lines produced by successive scans of the head are interlaced so as to produce a periodic frequency of no more than about four lines per millimeter.
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Hoisington Paul A.
Moynihan Edward R.
Schaffer Robert R.
Spehrley, Jr. Charles W.
Hartary Joseph W.
Spectra Inc.
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