摘要:
A layered photosensitive imaging member is modified to reduce the effects of interference within the member caused by reflections from coherent light incident on a base ground plane. The modification described is to form the ground plane surface by an electroforming process which leaves the surface with a black finish. Light incident on the ground plane is absorbed, eliminating the reflections which contribute to the interference effect at the imaging member surface.
摘要:
A variable attenuator for controlling scanning beam intensity having a twisted nematic liquid crystal for rotating the beam, a polarization analyzer for detecting the degree of alteration in the polarization of the beam by the crystal comprising a polarizing beam splitting plate separating the beam into primary and secondary beams, a photocell providing a signal reflecting the intensity of the secondary beam, a control for adjusting power to the crystal in response to the signal, a glass plate at an angle of incidence equal to but opposite from that of the beam splitting plate for correcting aberrations to the primary beam, and an anti-reflective coating on the optical surfaces of the crystal.In a second embodiment, the plates are replaced by a polarizing cube. In a third embodiment, to obviate fluctuations in the attenuator output, the glass plate instead serves as the source of the beam component to the photocell.
摘要:
A holographic display module is incorporated into a machine with independently operating subsystems, and used to provide an indication of the status or location of the machine subsystems. In one embodiment, a xerographic copier incorporates a holographic display incorporating an outline of the machine. A liquid crystal panel is aligned with the holographic display and selectively addressed in conjunction with signals from the copier subsystems. An illumination subsystem is optimized to provide diffuse illumination of the display.
摘要:
Methods and systems of ejecting ink drops from an inkjet printer are disclosed. The methods and systems can include a printhead with one or more stepped nozzles each with an associated entrance diameter and exit diameter. Ink can be received into the printhead and formed into ink drops in the stepped nozzles. The ink drops can each have an associated drop mass and drop speed. The stepped nozzles can be provided such that the exit diameter can independently dictate the drop mass and the entrance diameter can independently dictate the drop speed. As such, the complexity of jet design optimization is reduced.
摘要:
A fluid dispensing subassembly, includes a first set of plates including a diaphragm to be operated on by a transducer, a second set of plates including at least one manifold plate to direct ink to an aperture plate forming an exterior surface of the second set of plates, and a polymer compliant film arranged in between the first and second sets of plates to attach the first and second sets of plates together to form the fluid dispensing subassembly. A method of manufacturing a fluid dispensing subassembly includes forming a first structure of at least a diaphragm and a gap plate adjacent to at least one side of a polymer compliant film, the gap plate further including an air gap integrally formed within the gap plate, forming a second structure of at least a manifold body sealed on at least one side by the polymer compliant film, placing the polymer compliant film between the first and second structures, and using the polymer compliant film as an adhesive to attach the first and second structures of plates together, forming a fluid dispensing subassembly.
摘要:
A method for making a plurality of electromechanical transducers includes, depositing a layer of conductive material attached to a first side of a piezoelectric layer to form a laminar structure, attaching the laminar structure to a rigid carrier substrate using a removable double-sided tape, forming piezoelectric transducers, attaching the electromechanical transducer to a fluid channel substructure, and removing the rigid carrier substrate and the double-sided tape.
摘要:
A method for assembling an inkjet jet print head enables piezoelectric transducers to be bonded to an inkjet ejector without closing inlets to a pressure chamber within the inkjet ejector. The method includes bonding a polymer layer to a diaphragm layer having a plurality of openings, bonding piezoelectric transducers to the diaphragm layer with a thermoset adhesive, placing thermoset polymer in areas between the piezoelectric transducers on the diaphragm layer, and drilling inlets through the thermoset polymer and the diaphragm at the openings in the diaphragm.
摘要:
A fluid dispensing subassembly has a diaphragm arranged to be operated on by a transducer, a body pressure chamber arranged to be operated on by the diaphragm, and an adhesive attachment layer arranged between the diaphragm and the body pressure chamber. A fluid dispensing subassembly has a body pressure chamber formed of either a single plate or set of plates, a diaphragm arranged to operate on the body pressure chamber, and an adhesive layer arranged between the body pressure chamber and the diaphragm. A method of manufacturing a fluid dispensing subassembly includes forming a body pressure chamber from a body plate or a set of plates including a body plate, and adhesively bonding a diaphragm plate to at least the body plate of the fluid dispensing subassembly.
摘要:
An inkjet ejector provides electrical conductors for grounding electrically isolated layers in the ejector while electrically coupling a transducer of the ejector to a firing signal circuit. The inkjet ejector includes a diaphragm plate have a first side and a second side, a plurality of transducers mounted to the first side of the diaphragm plate, a polymer layer located on the second side of the diaphragm plate, an electrically conductive layer that is isolated from electrical ground by the polymer layer, and a plurality of electrical conductors, at least one of the electrical conductors extends from the electrically conductive layer to electrical ground through the polymer layer and other electrical conductors of the plurality of electrical conductors extend from each transducer to a firing signal circuit, the electrical conductor extending from the electrically conductive layer being the same material as the other electrical conductors in the plurality of electrical conductors.
摘要:
A fluid dispensing subassembly includes a diaphragm arranged to be operated on by a transducer, an aperture array through which fluid is forced onto a substrate, a manifold body between the diaphragm and the aperture array, a spacer between the manifold body and the aperture array, the spacer arranged to form a gap at least partially overlapping the manifold, and a compliant film arranged between the manifold body and the spacer such that the fluid resides on a side of the film adjacent the manifold, and that the film is unsupported by the spacer over a least a portion of the manifold. A fluid dispensing subassembly, includes a first set of plates including a diaphragm to be operated on by a transducer, a second set of plates including at least one manifold plate to direct ink to an aperture plate forming an exterior surface of the second set of plates, and a polymer compliant film arranged in between the first and second sets of plates to attach the first and second sets of plates together to form the fluid dispensing subassembly. A method of manufacturing a fluid dispensing subassembly includes forming a first structure of at least a diaphragm, forming a second structure of at least a manifold body, placing a polymer compliant film between the first and second structures, and using the polymer compliant film as an adhesive to attach the first and second structures of plates together, forming a fluid dispensing subassembly.