Inkjet printhead and printing apparatus
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United States of America Patent
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Jul 1, 2014
Grant Date -
Aug 23, 2012
app pub date -
Feb 9, 2012
filing date -
Feb 17, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The number of head contacts, which increases along with an increase in the number of ink colors and nozzles used in a printhead and the length of the printhead, can be decreased. To accomplish this, a reception unit, which receives a serialized control parameter having an identification code indicating a normal drive pulse for discharging ink or a pulse short enough not to discharge ink, is arranged on the head substrate of a printhead. Further, a normal pulse generation unit, which generates the normal drive pulse based on a received control parameter, and a short pulse generation unit, which generates the short pulse based on a received control parameter, are arranged on the head substrate. Based on the identification code of the control parameter, it is controlled to output the normal drive pulse or short pulse.
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