Patent
Thermal ink jet printer
John L. Vaught,Frank L. Cloutier,David K. Donald,John D. Meyer,Christopher A. Tacklind,Howard H. Taub +5 more
TLDR
In this paper, a thermal ink jet printer is disclosed in which ink droplets are ejected from an orifice by the explosive formation of a vapor bubble within the ink supply due to the application of a two part electrical pulse to a resistor within the Ink supply.Abstract:
A thermal ink jet printer is disclosed in which ink droplets are ejected from an orifice by the explosive formation of a vapor bubble within the ink supply due to the application of a two part electrical pulse to a resistor within the ink supply. The electrical pulse comprises a precurser pulse and a nucleation pulse; the precurser pulse preheats the ink in the vicinity of the resistor to a temperature below the boiling temperature of the ink so as to preheat the ink while avoiding vapor bubble nucleation within the ink supply and the subsequently occuring nucleation pulse very quickly heats the resistor to near the superheat limit of the ink.read more
Citations
More filters
Patent
Ink printing apparatus with improved heater
TL;DR: In this paper, a drop-on-demand printhead includes a substrate having a plurality of drop-emitter orifices, an ink channel coupled to each of them for delivery of a body of ink to each orifice at a pressure above ambient, and a heater is suspended in each ink meniscus close to its surface.
Patent
Ink jet print device and print head or print apparatus using the same
TL;DR: In this article, an ink jet print device includes a passageway for flowing ink having an outlet for ejecting ink at one end, where the cross-sectional dimensions of the passageways change.
Patent
Ink delivery system for an inkjet printhead
Brian J. Keefe,Steven W. Steinfield,Winthrop D. Childers,Paul H Mcclelland,Kenneth E. Trueba +4 more
TL;DR: In this article, an improved ink flow path between an ink reservoir and vaporization chambers in an inkjet printhead is presented, where a barrier layer containing ink channels and a vaporization chamber is located between a rectangular substrate and a nozzle member containing an array of orifices.
Patent
Ink printing with drop separation
James M. Chwalek,John A. c +1 more
TL;DR: A liquid ink, drop-on-demand page-width printhead comprises a semiconductor substrate, a plurality of drop-emitter nozzles fabricated on the substrate; an ink supply manifold coupled to the nozzels; pressure means for subjecting ink in the manifold to a pressure above ambient pressure causing a meniscus to form in each nozzle; a means for applying heat to the perimeter of the meniscuse in predetermined selectively addressed nozzle; and a means combining selection and ejection of drops from the selectively addressed Nozzles.
Patent
Method of fabricating bubblejet print devices using semiconductor fabrication techniques
TL;DR: In this article, a method of fabricating bubblejet print devices uses semiconductor fabrication techniques, and this method involves forming a heater means and an electrical connection to the heater means on a substrate, and forming a passageway through the substrate.
References
More filters
Patent
Liquid jet recording process and liquid jet recording head
TL;DR: In this article, a liquid jet recording process and liquid jet head are driven by heat energy generated by an electrothermal transducer, and the operating conditions as to heating and others are disclosed.
Patent
Arrangement of writing mechanisms for writing on paper with a coloredliquid
TL;DR: In this article, the authors propose an arrangement for applying droplets of a substance in liquid form to a surface. But the arrangement includes a chamber which is divided into an outer chamber portion and an inner chamber portion with a channel connecting the outer and inner chamber portions.
Patent
Liquid jet recording method with variable thermal viscosity modulation
TL;DR: In this article, a liquid jet recording method is proposed, which includes controlling thermal energy quantity to be generated by driving predetermined numbers of heat generating bodies selected in accordance with recording information from a plurality of heat-generating bodies which disposed along a flow path in a liquid chamber communicatively connected with a discharge orifice.
Patent
Ink jet recording device using thermal propulsion and mechanical pressure changes
TL;DR: In this paper, a recording head composed of a discharging orifice for ejecting the liquid recording medium in a form of droplets, an inlet for introducing the recording medium, a liquid chamber for holding the liquid recordings medium, and a heating element for applying heat energy to the liquid recorded medium in the liquid chamber, a means for applying voltage pulse to control heating by the heating element.
Patent
Liquid recording medium
TL;DR: A liquid recording medium for recording by ejecting liquid droplets comprises (a) a recording agent which is a component to form a recorded image; and (b) carrier liquid to dissolve or disperse said recording agent as discussed by the authors.