Ink jet recording apparatus controlled by presumed temperature and method therefor
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United States of America Patent
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Jul 11, 2000
Grant Date -
N/A
app pub date -
May 27, 1994
filing date -
May 27, 1993
priority date (Note) -
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status (Latency Note)
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Abstract
An ink jet recording apparatus including a recording head for performing print recording by ejecting ink from an ejection orifice by thermal energy; temperature sensors provided in the recording head; a temperature calculation device for calculating a temperature change of the recording head in a unit time as a discrete value on the basis of the supply of energy input to the recording head, and for calculating the temperature change of the recording head by accumulating the discrete value in the unit time; a temperature presuming device for presuming a head temperature by both a calculated value of the temperature change and an adopted base value of the head temperature; a detection device for detecting a difference between the head presumed temperature and a detected temperature sensed by the temperature sensors; an update device for updating the adopted base value of the head temperature by the difference; and a control device for controlling ejection of the ink to be stabilized in accordance with the head presumed temperature.
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