High print quality thermal ink jet print head

Details High print quality thermal ink jet print head High print quality thermal ink jet print head

1996-04-19

2000-10-17

Barlow, John

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 56, 347 62, B41J 205

Patent

active

061320307

ABSTRACT:
The invention described herein relates to a method for printing with a thermal ink jet printer. A thermal ink jet print head containing a plurality of resistance heaters is provided. To each resistance heater there is an electrical current path, and each resistance heater also has a surface for heating the ink adjacent the surface. By providing an electrical current to the heaters to heat the ink such that a heater power density of at least about two gigawatts per square meter is obtained, print quality may be dramatically improved.

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A. Asai, "Bubble Dynamics Under High Heat Flux Pulse Heating," Proc. ASME/JSME, Thermal Conf., (1991).
W. Runge, "Nucleation in Thermal Inkjet Printer," Proc. 8th Int. Cong. Adv. Non-Impact Printing Tech., (1992).

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