Incremental printing of symbolic information – Ink jet – Controller
Patent
1998-06-03
2000-08-29
Hilten, John S.
Incremental printing of symbolic information
Ink jet
Controller
347223, B41J 207, B41J 2205, B41J 2375
Patent
active
061097195
ABSTRACT:
The invention described in the specification relates to an apparatus and method for cooling a printhead containing multiple semiconductor substrates. The substrates which contain a plurality of energy imparting devices for energizing ink are attached to a metal substrate carrier for providing efficient heat transfer from the substrates. A temperature sensing device is attached to the carrier for measuring a temperature of the substrate carrier during a printing operation and for generating an input signal to a controller. The controller, in turn, sends an output signal to the printhead to selectively energize one or more of the energy imparting devices on each substrate in response to the input signal and a thermal expansion value based on the temperature of the heat transfer member. Because the timing of energization of the energy imparting devices is controlled in response to the carrier temperature and its expansion characteristics, more cost effective materials for the carrier can be used.
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Hilten John S.
Lexmark International Inc.
Sanderson Michael T.
Sandusky Amanda B
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