Ink jet head and ink jet recording apparatus in which both preliminary heating and driving signals are supplied according to stored image data
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United States of America Patent
Stats
-
Nov 14, 2000
Grant Date -
N/A
app pub date -
May 26, 1994
filing date -
May 26, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An ink jet printer having an ink jet head is disclosed. The ink jet head includes a plurality of electrothermal transducers for producing thermal energy used to eject ink from the ink jet head. The ink jet printer has a storing device which stores image data used to drive the electrothermal transducers and a switching device which switches energization periods for the electrothermal transducers in accordance with the image data stored in the storing device. The printer operates so that during a recording operation, when an image datum stored in the storing device instructs recording, the switching device supplies a first drive signal for preliminary ink heating and a second drive signal for ejecting the ink. When the image datum stored in the storing device is datum not instructing recording, the switching device supplies the first drive signal and does not supply the second drive signal.
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