Abstract: In one embodiment, a fluid ejection device is configured to receive a signal and ejecting fluid in response thereto, including an ink ejecting nozzle layer having a substrate with first and second surfaces joined along an edge, an insulating feature located on the first surface adjacent the edge and a flexible lead that bends around the edge and lies flush against the insulating feature.

Abstract: An optical system includes a layer of magneto rheological (MR) fluid having a surface exposed to air or vacuum. The MR fluid has a first state wherein the surface is reflective, and a second state wherein the surface is non-reflective. A magnetic actuator selectively applies a magnetic field to the MR fluid to actuate the fluid to the second state.

Abstract: An optical system includes a layer of magneto rheological (MR) fluid having a surface exposed to air or vacuum. The MR fluid has a first state wherein the surface is reflective, and a second state wherein the surface is non-reflective. A magnetic actuator selectively applies a magnetic field to the MR fluid to actuate the fluid to the second state.

Abstract: Techniques are described for constructing filter type features capable of entrapping particle contaminants to eliminate printing defects. These techniques utilize photo-imageable barrier material to fabricate various shapes and forms to reduce feature sizes. Several of these techniques utilize barrier material of height less than barrier materials used to fabricate ink feed channels and firing chamber walls. Another variation describes creation of a filter mesh from two layers of reduced height barrier materials.

Abstract: An ink-jet ink composition and a method of printing with the ink composition comprising at least one colorant and an aqueous vehicle comprising at least one refractory or noble metal-reactive component.

Abstract: An inkjet ink composition and a method of printing with the ink composition comprising at least one colorant and an aqueous vehicle comprising at least one metal salt or metal-organic complex that forms a film on the thermal inkjet resistor surface after repeated energizing of the resistor.

Abstract: Techniques are described for constructing filter type features capable of entrapping particle contaminants to eliminate printing defects. These techniques utilize photo-imageable barrier material to fabricate various shapes and forms to reduce feature sizes. Several of these techniques utilize barrier material of height less than barrier materials used to fabricate ink feed channels and firing chamber walls. Another variation describes creation of a filter mesh from two layers of reduced height barrier materials.

Abstract: An inkjet ink composition and a method of printing with the ink composition comprising at least one colorant and an aqueous vehicle comprising at least one metal salt or metal-organic complex that forms a film on the thermal inkjet resistor surface after repeated energizing of the resistor.

Abstract: An inkjet ink composition and a method of printing with the ink composition comprising at least one colorant and an aqueous vehicle comprising at least one metal salt or metal-organic complex that forms a film on the thermal inkjet resistor surface after repeated energizing of the resistor.

Abstract: In order to overcome inefficient power dissipation in parasitic resistances and to provide economies in the power supply, a higher resistance value heater resistor is employed in a thermal inkjet printhead. Higher current densities in a high resistance segmented heater resistor are reduced by employing a shorting bar divided by a current balancing resistor.

Abstract: In order to overcome inefficient power dissipation in parasitic resistances and to provide economies in the power supply, a higher resistance value heater resistor is employed in a thermal inkjet printhead. Higher current densities in a high resistance segmented heater resistor are reduced by employing a shorting bar divided by a current balancing resistor.

Abstract: This present invention is embodied in a system and a method for protecting an electrically-inactive component of a microsystem from an ESD event. The invention includes embodiments that protect the microsystem from ESD events that directly strike an electrically-inactive component and that are external to the electrically-inactive component. The present invention includes an ESD dissipation device having a connected chain of electrically-inactive components that are electrically floating. Alternatively, the electrically-inactive components can be held at the same potential as an electrical component. Further, a sacrificial ESD breakdown device is included that provides a preferential ESD breakdown site away from the protected component. Also, capacitively coupled thin-film layers can provide shielding to electrically-inactive components.

Abstract: A temperature control system for an inkjet printhead assembly includes a printhead assembly having ink ejection elements energizable by an electrical pulse having an amplitude and pulse width, a sensor coupled to the printhead assembly for generating a signal representative of a printhead temperature. A controller reads a nominal operating pulse width, pulse width calibration data and the signal from the sensor. The controller calculates an adjusted pulse width using the nominal operating pulse width, the pulse width calibration data and the signal from the sensor. The controller uses the adjusted pulse width to control the printhead temperature.

Abstract: A novel polymeric orifice plate for a printhead. The plate includes a recess in the top surface thereof which terminates at a position between the top and bottom plate surfaces. The recess communicates with a bore which passes through the remainder of the plate and terminates at the bottom surface. The recess has an upper end with a first opening therein, a lower end with a second opening therein, a side wall, and a bottom wall at the lower end The first opening is larger than the second opening. Application of physical force to the plate does not disturb the second opening in the recess which is “inset”. The recessed bottom wall (and possibly the top surface) of the plate may include at least one layer of coating material thereon for protective, wettability-control, and other purposes. These designs insure proper ink drop trajectory and high-quality image generation.

Abstract: In order to overcome inefficient power dissipation in parasitic resistances and to provide economies in the power supply, a higher resistance value heater resistor is employed in a thermal inkjet printhead. Higher current densities in a high resistance segmented heater resistor are reduced by employing a shorting bar divided by a current balancing resistor.

Abstract: In order to overcome inefficient power dissipation in parasitic resistances and to provide economies in the power supply, a higher resistance value heater resistor is employed in a thermal inkjet printhead. Higher current densities in a high resistance segmented heater resistor are reduced by employing a shorting bar divided by a current balancing resistor.

Abstract: In order to overcome inefficient power dissipation in parasitic resistances and to provide economies in the power supply, a higher resistance value heater resistor is employed in a thermal inkjet printhead. Higher current densities in a high resistance segmented heater resistor are reduced by employing a shorting bar divided by a current balancing resistor.