Recorders – Markers and/or driving means therefor – With ink supply to marker
Patent
1991-09-06
1993-04-27
Fuller, Benjamin R.
Recorders
Markers and/or driving means therefor
With ink supply to marker
B41J 2035
Patent
active
052066673
ABSTRACT:
A Fleming-type ink jet head in which a group of electrodes constituting one of two rows of a plurality of pairs of electrodes for causing currents to flow across ink channels are integrally formed for the purpose of improving the accuracy with which the pairs of electrodes are relatively positioned as well as reducing the manufacture cost. The resistance between each of the pairs of electrodes is detected and the width or magnitude of a pulse current caused to flow between the electrodes is controlled based on the data of this detection, thereby preventing a deterioration in printing quality due to the non-uniformity of the resistance. Also, the width or magnitude of current pulse is controlled with respect to the positions of the channels to compensate for the non-uniformity of the magnetic field intensity through the channels stacked between magnets, whereby a deterioration in printing quality due to the non-uniformity of the magnetic field intensity is prevented. A circuit for heating the ink in the channels is provided to prevent a deterioration in printing quality due to a change in the viscosity of the ink.
Bobb Alrick
Fujitsu Limited
Fuller Benjamin R.
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