摘要:
A seal for a fuel cell includes a matrix of glass and an embedded phase that includes a metal. The seal is configured to absorb stresses by becoming structurally yieldable at operating temperatures of the fuel cell.
摘要:
A carrier frame having an aperture and a nozzle plate disposed on the carrier frame and positioned over the aperture is described. The nozzle plate has at least one nozzle formed between opposing surfaces of the nozzle plate. The carrier frame and the nozzle plate are made from materials having dissimilar thermal expansion coefficients such that the carrier frame has a thermal expansion coefficient that is less than the thermal expansion coefficient of the nozzle plate. The nozzle plate is staked to the carrier frame and then baked so that the nozzle plate shrinks during the baking process thereby becoming taught and under a state of tensile stress. The nozzle is formed in the nozzle plate after the baking process by laser ablation, for example. The nozzle thus formed has a true bore due to the taught nozzle plate and the opposed surfaces of the nozzle plate being parallel to each other. Consequently, a nozzle camber angle measured relative to a nozzle axis and defined by an angular displacement between a center point of symmetry on an input side of the nozzle and a center point of symmetry on an output side of the nozzle is coaxially aligned with the nozzle axis. By eliminating dimples in the nozzle plate, the nozzle has sidewall surfaces that are symmetric with respect to the nozzle axis thereby defining a nozzle with a true bore. An ink drop injected into the nozzle by an ink jet printhead mounted to the nozzle plate and having a firing chamber in fluid communication with the nozzle will exit the nozzle in a direction that is aligned with the nozzle camber angle such that the drop directionality of the ink drop is improved by true bore of the nozzle.
摘要:
In one embodiment of the invention, a flexible tape has formed on it conductors for being connected to a printhead substrate. The conductors on the tape are coated with an insulating layer, and exposed ends of the conductors extend from the layer. A headland is formed on a plastic print cartridge for receiving the printhead substrate having the exposed conductors extending from one or more edges of the printhead substrate. An adhesive bead is formed on the headland so that when the printhead is properly positioned on the headland, the adhesive contacts the conductors to encapsulate and insulate one exposed side of the conductors. A second adhesive or encapsulant bead is deposited over the opposite side of the conductors to encapsulate and insulate the remaining exposed regions of the conductors. In this manner, the combined insulating action of the insulating layer and the two insulating adhesive beads prevents the conductors from being shorted together by ink which may flow in the vicinity of the conductors.
摘要:
A method and apparatus apply an electric field across active layer, wherein active layer is configured to change from a first light attenuating state to a second lesser light attenuating state in response to the applied the electric field and wherein the second lesser light attenuating state permits light to be reflected from a light reflective face.
摘要:
A layered image-forming composite can include a substrate having a background color layer and a color-forming layer applied thereon. The color-forming layer includes a leuco dye that can be developed upon exposure to energy to produce a developed color. The background layer and the color-forming layer can each contribute to the overall appearance of the composite either before and/or after development of the leuco dye. In one aspect, the color-forming layer can have a thickness sufficiently thin to allow a portion of the fixed background color to be visible through a developed portion of the color-forming layer. Optionally, the color-forming layer can be applied in a filter pattern, e.g., halftone, moiré, stochastic, etc. in order to provide unique visual effects to the layered composite.
摘要:
A fluid dispensing system, including a photon source disposed on a moveable carriage and a fluid ejector array having a plurality of fluid ejection elements disposed on a substrate. Each fluid ejection element includes a fluid ejector, and a photodetector electrically coupled to the fluid ejector. Moving said photon source over at least a portion of the fluid ejector array, selectively illuminates the photodetectors, thereby selectively activating the fluid ejectors coupled to the illuminated photodetectors.
摘要:
A fluid dispensing system, including a photon source disposed on a moveable carriage and a fluid ejector array having a plurality of fluid ejection elements disposed on a substrate. Each fluid ejection element includes a fluid ejector, and a photodetector electrically coupled to the fluid ejector. Moving said photon source over at least a portion of the fluid ejector array, selectively illuminates the photodetectors, thereby selectively activating the fluid ejectors coupled to the illuminated photodetectors.
摘要:
A layered image-forming composite can include a substrate having a background color layer and a color-forming layer applied thereon. The color-forming layer includes a leuco dye that can be developed upon exposure to energy to produce a developed color. The background layer and the color-forming layer can each contribute to the overall appearance of the composite either before and/or after development of the leuco dye. In one aspect, the color-forming layer can have a thickness sufficiently thin to allow a portion of the fixed background color to be visible through a developed portion of the color-forming layer. Optionally, the color-forming layer can be applied in a filter pattern, e.g., halftone, moire, stochastic, etc. in order to provide unique visual effects to the layered composite.
摘要:
A fluid dispensing system, including a photon source disposed on a moveable carriage and a fluid ejector array having a plurality of fluid ejection elements disposed on a substrate. Each fluid ejection element includes a fluid ejector, and a photodetector electrically coupled to the fluid ejector. Moving said photon source over at least a portion of the fluid ejector array, selectively illuminates the photodetectors, thereby selectively activating the fluid ejectors coupled to the illuminated photodetectors.
摘要:
A scent storage device including a base member and a plurality of scent channels carried by the base member. Each scent channel includes a scent material supply and a scent activation system that selectively activates predetermined portions of the scent material supply.