Ink-jet printing system having acoustic transducer for determini

Details Ink-jet printing system having acoustic transducer for determini Ink-jet printing system having acoustic transducer for determini

1995-03-09

1997-07-08

Metjahic, Safet

Incremental printing of symbolic information

Ink jet

Controller

347 19, B41J 2938, B41J 29393

Patent

active

056466544

ABSTRACT:
An ink-jet printing system includes an ink-jet print head having multiple nozzles for ejecting drops of ink onto the recording media to form printed images. The ink-jet print head emits an audible sound during the ejection of an ink droplet, but remains comparatively silent when no ink droplet is ejected. An acoustic detector is provided to detect the audible sound emitted by the ink-jet print head during ejection of the ink droplet. The system further includes an energy control subsystem coupled to supply pulses of operating energy to the print head to cause ejection of the ink droplets. The energy control subsystem is operatively coupled to receive feed back information from the acoustic detector which is then used to adjust the operating energy pulses that are supplied to the print head. The energy control subsystem adjusts the operating energy pulses in a manner that causes the print head to emit audible sounds that are optimized toward approximating an ideal audible sound indicative of optimal operation.

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