Discharge recovery method and apparatus for an ink jet recording head
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United States of America Patent
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-
Nov 14, 2000
Issued Date -
N/A
app pub date -
Nov 3, 1993
filing date -
Apr 11, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A recovery method for recovering proper operation of an ink jet recording head having a plurality of discharge ports and a plurality of thermal energy generating elements each corresponding to each of the discharge ports includes providing a recovery device for performing recovery according to a first recovery mode for only applying pressure to the discharge ports to effect suction of ink from the discharge ports while the discharge ports are capped by a capping device, and a second recovery mode for concurrently applying pressure to the discharge ports and driving the thermal energy generating elements to forcibly exhaust ink from the discharge ports while the discharge ports are capped by the capping means. The method also includes selectively performing recovery according to one of the first recovery mode and the second recovery mode.
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