Abstract: Integrated circuits and methods for producing them are provided. In particular, integrated circuits with shielding elements are provided.

Abstract: A monochrome ink jet printhead having a high-density array of ink drop generators capable of multi-mode operation. The printhead of the present invention includes the array of ink drop generators arranged in at least three groups of nozzles with each group staggered relative to each other. This staggered arrangement provides high print resolution at high speed. In addition, the multiple modes of operation provided by the present invention permits different print modes depending on the desired print speed, resolution and quality. In a preferred embodiment, the present invention is capable of printing in a one-pass 1200 dpi mode at high speed, a two-pass 600 dpi mode high print quality and a one-pass 600 dpi mode at high speed. The present invention also includes a method of high-performance printing using the ink jet printhead of the present invention.

Abstract: A narrow ink jet printhead having four columnar arrays of ink drop generators configured for monochrome single-pass printing at a print resolution having a media axis dot spacing that is less than the columnar nozzle spacing of the ink drop generators. The ink jet printhead more particularly includes high resistance heater resistors and efficient FET drive circuits that are configured to compensate for variation in parasitic resistance presented by power traces.

Abstract: Integrated circuits and methods for producing them are provided. In particular, integrated circuits with shielding elements are provided.

Abstract: A fluid ejection device includes drive circuitry for a heating element, wherein at least part of the drive circuitry is positioned proximate to and within 60 microns of the heating element.

Abstract: A replaceable printer component (14) includes a thermal sense resistor (14B) having a first resistance. A resistance modifier (510) coupled to the thermal sense resistor modifies the first resistance.

Abstract: A fluid ejection device includes drive circuitry for a heating element, wherein at least part of the drive circuitry is positioned proximate to and within 60 microns of the heating element.

Abstract: A method of etching the trench portions of a thermal inkjet printhead using a robust mask that precisely defines the area of the substrate surface to be etched and that protects the adjacent drop generator components from damaging exposure to the silicon etchant. The process in accordance with the present invention uses as a mask some of the material that is also used in patterned layers for producing the drop generator components on the substrate. The placement of the mask components on the substrate occurs simultaneously with the production of the drop generator components, thereby minimizing the time and expense of creating the silicon-etchant mask.

Abstract: Disclosed is a printhead including a substrate having a plurality of fluid heating elements. First, second and third fluid channels deliver fluid to the plurality of fluid heating elements. Each of the first, second and third fluid channels is operatively associated with first, second and third multiplicity's, respectively, of fluid heating elements of the plurality of fluid heating elements. The first and second fluid channels are defined by first and second edges, respectfully, of the substrate. The third fluid channel is defined by a slot extending through the substrate. The first, second and third fluid channels can each deliver a different color ink to their respective fluid heating elements.

Abstract: A compact thermal ink jet printhead including a printhead substrate, a plurality of side by side columnar arrays of drop generators formed in the printhead substrate, and drive circuits formed in the printhead substrate for energizing each ink drop generator. The printhead substrate has an ink drop generator packing density of at least 10.43 ink drop generators per square millimeter.