摘要:
A tunable Fabry-Perot filter (8, 118, 218, 318, 418) includes substrates (10, 12) with parallel generally planar facing principal surfaces (14, 16) including spaced apart facing reflective surface regions (20, 22) that are at least partially reflective over a wavelength range and define an optical gap (Gopt) therebetween. At least one substrate of the pair of substrates is light transmissive over the selected wavelength range to enable optical coupling with the optical gap. Electrodes (24, 26) are disposed on the facing principal surfaces of the substrates. The electrodes on the facing principal surfaces of the substrates are define an electrode gap therebetween such that electrical biasing of the electrodes simultaneously modifies the optical and electrode gaps.
摘要:
A full width array printhead is provided having a continuous maintainable printhead surface and method of forming the same. The printhead includes a substrate and an array of die modules mounted thereon with a front face of each die module exposed. A hardened fill material surrounds the array of die modules to define a continuous surface coplanar with the front face of the array of die modules.
摘要:
A printhead manufacturing method includes providing a first wafer, forming a polymer layer over the first wafer, the polymer layer including at least one via, providing a metal layer over the at least one via, providing a solderable or plateable interface layer over the metal layer and the polymer layer, forming a fluid chamber in the polymer layer, providing a fluid nozzle in the first wafer, providing a second wafer, and joining the second wafer to the first layer to form the printhead. A printhead that includes a first wafer, a polymer layer over the first wafer, the polymer layer including at least one via, a metal layer over the at least one via, an interface layer over the metal layer and the polymer layer, a fluid chamber formed in the polymer layer, and a fluid chamber formed in the first wafer.
摘要:
A Micro-Electro-Mechanical System (MEMS) based Fabry-Perot array may be used as a spectral filter to light sensing array, such as a CCD or CMOS photodetector. Applying different voltages to the electrodes of individual Fabry-Perot cells within the array allows a gradient in the Fabry-Perot air gap across the Fabry-Perot array. In this manner the MEMS Fabry-Perot array serves as a spectral filter of light passing through the Fabry-Perot array to the photodetector array. Embodiments of the disclosed sensor, used with LEDs that emit light outside the photosensitivity range of a photoreceptor belt, may be used to measure spectral information from toned patches and/or images placed upon a photoreceptor belt within a marking system. Other embodiments of the disclosed senor, used with LEDs that emit light of any wavelength, may be used to measure spectral information from toned patches or images placed by a marking system upon a non-photosensitive output substrate, such as an intermediate belt or paper.
摘要:
A full width array printhead is provided having a continuous maintainable printhead surface and method of forming the same. The printhead includes a substrate and an array of die modules mounted thereon with a front face of each die module exposed. A hardened fill material surrounds the array of die modules to define a continuous surface coplanar with the front face of the array of die modules.
摘要:
A method and resulting device for accurately positioning an array of die modules in an imaging array, including larger partial width arrays and full page width arrays, is described herein. The method includes forming physical reference datum directly on an individual silicon die module, and positioning the individual die modules on a temporary holder. The temporary holder includes an alignment tool and singulated die are placed onto the temporary holder by abutting the physical reference datum against the alignment tool. A vacuum temporarily secures the die positioned on the temporary holder, and a permanent substrate is then attached to the die of the temporary holder. The temporary holder is released in favor of the permanent substrate having the accurately aligned die modules thereon.
摘要:
A waveguide structure has a base having a base height (h) above a substrate and a rectangular waveguide having a waveguide height (H) above the substrate and a waveguide width (W) between opposing sides of the waveguide.
摘要:
A thermal actuator comprises a substantially straight beam. The beam has a beam length and a beam mid-point. The beam comprises a plurality of beam segments with beam segment lengths. Each beam segment has a beam segment neutral axis, thus forming a corresponding plurality of beam segment neutral axes. The beam segment neutral axes are offset along the beam length based on a predetermined pattern. As the beam is heated by an included heating means, the beam buckles. The buckling of the beam, in turn, causes the beam mid-point to translate or move in the predetermined direction. The beam mid-point movement, in turn, operates an included optical waveguide switch. The heating means comprises any of Joule heating, eddy current heating, conduction heating, convection heating and radiation heating.
摘要:
A thermal actuator comprises a plurality of substantially straight and parallel beams arranged to form a beam array. The midpoint of each beam is attached or coupled to an orthogonal coupling beam. Each array beam has a beam heating parameter with a corresponding beam heating parameter value. The beam heating parameter values vary across the beam array based on a predetermined pattern. As the beams are heated by an included heating means, the distribution of beam temperatures in the beam array becomes asymmetric, thus causing the beam array to buckle. The buckling of the beams in the beam array, in turn, causes the attached coupling beam to move in a predetermined direction. The coupling beam motion, in turn, operates an included optical waveguide switch. The beams in the beam array are heated by any of Joule heating, eddy current heating, conduction heating, convection heating and radiation heating.
摘要:
A method for forming an ink jet printhead can include interposing a coverlay between a press plate of a press and an ink jet printhead aperture plate assembly, such that the coverlay physically contacts an anti-wetting coating on a surface of the aperture plate assembly. With the coverlay contacting the anti-wetting coating, a force is applied to the aperture plate assembly using the press. The coverlay is separated from the aperture plate assembly, wherein the coverlay includes a layer having an elastic modulus of at least 0.5 GPa.