Recording head and apparatus for detecting contact condition
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United States of America Patent
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Oct 27, 1998
Grant Date -
N/A
app pub date -
Mar 13, 1996
filing date -
Mar 17, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A recording head utilizes an AND circuit which performs logical product between inputs from signal input terminals and a warning signal output terminal which outputs a result of the AND circuit. A recording apparatus in which the recording head is installed has a control circuit which supplies a high level signal to the signal input terminals and which inputs a warning signal from the warning signal output terminal. The control circuit judges that the contact of the recording apparatus with the recording head is good if the warning signal is a high level, or judges that the contact is poor if it is not so.
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