Multiple power interconnect arrangement for inkjet printhead
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United States of America Patent
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-
Sep 18, 2001
Issued Date -
N/A
app pub date -
Oct 29, 1999
filing date -
Oct 28, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An interconnection arrangement for an inkjet printing system having multiple power pads, each of which provides power for driving a large number of printhead ink ejection elements. The ink ejection elements of a print cartridge are organized into groups, with power provided to each group by one of the power pads. The firing pulse width of each group is independently set to compensate for the parasitic electrical resistances in the power path of each ink ejection group in the print cartridge so as to eject ink drops of uniform volume required for high quality printed output. In order to transmit the relatively high current levels required to fire a large number of ink ejection elements from a single group at the same time, the interconnection scheme provides multiple bump-and-dimple interconnections with the printer for each power and ground pad on the print cartridge.
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