Ink jet head with testing resistors
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United States of America Patent
Stats
-
Nov 17, 1992
Grant Date -
N/A
app pub date -
Dec 31, 1990
filing date -
Dec 29, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An ink jet head is provided with testing or inspection to facilitate efficient testing of the circuitry to determine whether any short-circuit or open circuits exist. The ink jet head includes plural ejection outlets for ejecting ink; a corresponding number of heat generating resistors disposed corresponding to the ejection outlets; heat generating resistors corresponding to the ejection outlets; electrodes connected to the respective heat generating resistors. The inspection resistors connect adjacent electrodes to permit inspection of electric connections.
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