摘要:
The present invention relates to a means for monitoring the utility usage in a building with individual units but serviced by a single utility company meter. The individual units receive a pulse flow meter which is hard wired to a central unit and then sent to the internet for reading and then splitting the utility bill into prorated utility bills based on actual usage rather than size of the individual unit as a percentage of the whole unit.
摘要:
A method of fabricating a printhead is provided in which sacrificial material is deposited on a substrate having printing nozzles formed thereon so that a first portion of the sacrificial material encases the nozzles and a second portion of the sacrificial material forms part of a printing fluid containment formation surrounding one or more of the nozzles, positioning a nozzle guard over the nozzles so as to contact the second portion of the sacrificial material, and removing the first portion of the sacrificial material.
摘要:
A printhead assembly includes a substrate that defines a plurality of fluid inlet conduits. A plurality of nozzle assemblies is positioned on the substrate. Each nozzle assembly defines a nozzle chamber in fluid communication with a respective fluid inlet conduit and a nozzle opening from which fluid is ejected. A guard member is positioned on the substrate and is spaced from the nozzle assemblies. The guard member defines a plurality of apertures that are aligned with respective nozzle openings. The substrate and the guard member are of substantially the same material.
摘要:
A printhead for an ink jet printer with an array 14 of ink ejection nozzles 22 formed from MEMS techniques. To protect the delicate nozzle structures, a nozzle guard 80 covers the exterior surface of the array 14. A corresponding array of apertures 84 is formed in the guard 80. To attach the guard 80 to the silicon substrate 16 carrying the nozzles 22, alignment formations 148 configured for engagement with complementary formations on a nozzle guard 86. For precise registration between the nozzles 22 and the respective apertures 86 in the guard 80, the alignment formations 148 may be formed using the same etching and deposition techniques used to form the nozzles 22. To protect the fragile nozzle structures 22 from inadvertent contact with the struts 86 during assembly, the nozzles 22 are reinforced by sacrificial material 152 which subsequently removed by an oxygen plasma etch 154.
摘要:
A liquid-ejection integrated circuit device includes a substrate that defines a plurality of liquid inlet channels. A drive circuitry layer is positioned on the substrate. A plurality of nozzle chamber structures is positioned on the substrate. Each nozzle chamber structure defines a nozzle chamber in communication with a respective inlet channel and a liquid ejection port and incorporates a movable liquid ejection member that serves to eject liquid from the liquid ejection port when displaced. A micro-electromechanical actuator is connected to the drive circuitry layer to receive drive signals and is operable on the movable liquid ejection member to displace the liquid ejection member. A nozzle guard is mounted on the substrate and defines a plurality of apertures in alignment with respective liquid ejection ports. The nozzle guard and the substrate have substantially the same coefficient of thermal expansion to inhibit the apertures moving out of alignment with the liquid ejection ports as a result of heating of the substrate.
摘要:
A printhead assembly includes a substrate that defines a plurality of fluid inlet conduits. A plurality of nozzle assemblies is positioned on the substrate. Each nozzle assembly defines a nozzle chamber in fluid communication with a respective fluid inlet conduit and a nozzle opening from which fluid is ejected. A guard member is positioned on the substrate and is spaced from the nozzle assemblies. The guard member defines a plurality of apertures that are aligned with respective nozzle openings. The substrate and the guard member are of substantially the same material.
摘要:
A printhead includes a substrate that defines a plurality of ink inlet conduits. A plurality of nozzle assemblies is positioned on the substrate. Each nozzle assembly defines a nozzle chamber in fluid communication with a respective ink inlet conduit and a nozzle opening from which ink is ejected. A guard member is positioned on the substrate and is spaced from the nozzle assemblies. The guard member defines a plurality of apertures that are aligned with respective nozzle openings. A plurality of containment walls are disposed about respective nozzle assemblies and interposed between the substrate and the guard member to define a plurality of containment chambers. Each nozzle assembly is positioned in a respective containment chamber.
摘要:
A method of fabricating a printhead is provided. The printhead includes a substrate, a plurality of nozzles positioned on the substrate and a nozzle guard that is mounted on the substrate to cover the nozzle arrangements. The nozzle guard defines a plurality of apertures that are aligned with respective nozzles so that ink ejected from the nozzles can pass through the apertures and onto a print medium. The method includes the step of depositing sacrificial material on the substrate having the nozzles positioned thereon so that a first portion of the sacrificial material encases the nozzles, positioning the nozzle guard on the substrate so as to contact a second portion of the sacrificial material not encasing the nozzles, and subsequently removing the first portion of the sacrificial material.
摘要:
A method of fabricating a printhead is provided. The printhead includes a substrate, a plurality of nozzles positioned on the substrate and a nozzle guard that is mounted on the substrate to cover the nozzle arrangements. The nozzle guard defines a plurality of apertures that are aligned with respective nozzles so that ink ejected from the nozzles can pass through the apertures and onto a print medium. The method includes the step of depositing a layer of a sacrificial material onto the substrate to cover the nozzles. The nozzle guard is positioned on the sacrificial material and the sacrificial material is removed.
摘要:
A cleaning card particularly for a time recorder which is formed with a large number of cleaning protrusions over the front and rear surfaces thereof, said cleaning protrusions being adapted to clean the front faces of the protective glasses for both the card detecting and code reading photoelectric sending and receiving elements which are located opposite to each other on the both sides of the cars passage in the time recorder.