摘要:
A microrelay including a substrate having a pair of fixed contacts fixed on a surface thereof and a movable section having a pair of movable contacts opposed to the pair of fixed contacts. The movable section includes a frame for fixing the movable section to the substrate; a movable body having the pair of movable contacts and a pair of magnetic bodies; and a coupling section for pivotally supporting the movable body to the frame. The substrate has a pair of magnetic force generating devices for supplying the pair of magnetic bodies with a magnetic force, thereby selectively causing contact between one of the pair of movable contacts and the fixed contact opposed to the one of the pair of movable contacts; and a magnetic force controlling device for applying the magnetic force generated by each of the pair of magnetic force generating devices only to the magnetic body corresponding to each of the magnetic force generating device. A method for producing such a microrelay includes the steps of depositing an insulating film on the surface of the substrate; forming the pair of fixed contacts each formed of a conductive film on the insulating film; and forming a groove at the surface of the substrate between the pair of fixed contacts.
摘要:
A casing and a nozzle plate form a hollow cavity in which ink liquid can be filled. A buckling structure body is disposed within this hollow cavity. A nozzle orifice is provided in a nozzle plate at a position corresponding to the buckling structure body. The buckling structure body has a portion extending in a longitudinal direction. Both ends of the buckling structure body in the longitudinal direction are fixedly attached to the casing via an insulative member. The buckling structure body is formed of a material that is displaced at least in the longitudinal direction by conduction of current from a power source. Thus, an ink jet head of a long lifetime is provided that can provide a great discharge force while maintaining its small dimension.
摘要:
A casing is attached to a nozzle plate so that a hollow cavity is formed between the nozzle plate having a nozzle orifice and the casing. Three buckling structure bodies are arranged in the hollow cavity. Each of the buckling structure bodies has both ends fixedly attached to the casing via an attach member so that the center portion can be displaced. A power source is provided which applies a compressive stress to the interior of the buckling structure bodies to buckle the buckling structure bodies by the compressive stress and to displace the center portion. As a result, the ink jet head is capable of implementing a large discharge force while maintaining a compact size.
摘要:
A probe is displaced relative to a recording medium according to a drive voltage. A chip is provided at an end of the probe. The chip serves to form pits and projections on a surface of the recording medium according to a recording voltage (Vp2) and serves to output a current signal responsive to the pits and projections with a reproducing voltage (Vp1) applied. A voltage generator generates the recording voltage and the reproducing voltage based on address and data signals. A sample-hold unit samples at a specified frequency a current signal obtained from a no-recording area of the recording medium by the chip and produces an output voltage signal. A reproducing unit demodulates and reproduces increment and decrement of the current signal obtained from a recording area of the recording medium by the chip. A control unit controls recording and reproduction. The control unit outputs such a drive voltage that the interval between the chip and the recording medium is maintained constant by feedback control based on the voltage signal derived from the sample-hold unit. The control unit controls the recording so that no-recording areas and recording areas are arranged alternately.
摘要:
An ink jet head has an ink head main body that is constituted of a substrate, spacers that are formed on one side of the substrate, and a roof plate that is joined to the substrate through the spacers. One or more ink passages are independently formed between the substrate and the roof plate. Rows of piezoelectric devices, each of which is made of a plurality of piezoelectric devices aligned along each ink passage, are formed through the respective ink passages. Ac voltages whose phases are different from each other by 90 degrees are applied to the respective piezoelectric devices. Progressive waves, which are excited by the rows of piezoelectric devices, allow ink to move through the ink passage and to be sprayed.
摘要:
An information recording and reproducing apparatus of the present invention, in which a tunnel current is utilized for recording information to a recording surface of a recording medium and/or for reproducing information from the recording surface, includes a slider which is arranged on the recording surface and floats above the recording surface by an air flow caused by movement of the recording medium. The slider includes a body having a first surface positioned opposite to the recording surface, a second surface parallel to the first surface, and a third surface oblique to the first and second surfaces. The slider further includes a cantilever having a projecting portion projecting from the body so as to be substantially parallel to the recording surface and a tip for detecting the tunnel current formed on a surface of the projecting portion on the side of the recording surface.
摘要:
An ink jet of the present invention includes a nozzle plate having a nozzle orifice, a substrate having an opening communicating with the nozzle orifice, an ink discharge plate having a center portion positioned in the nozzle orifice of the nozzle plate and the opening, and both ends supported by being sandwiched between the nozzle plate and the substrate, the center portion being closer to the nozzle plate than the both ends, and a compressive member for applying a compressive force in the axis direction of the ink jet plate so that the center portion of the ink discharge plate is deformed towards the nozzle orifice by buckling. Because of this structure, the ink discharge plate is always buckled towards the nozzle orifice, and forms an ink droplet without erroneous operation.
摘要:
An ink jet head has an ink head main body that is constituted of a substrate, spacers that are formed on one side of the substrate, and a roof plate that is joined to the substrate through the spacers. One or more ink passages are independently formed between the substrate and the roof plate. Rows of piezoelectric devices, each of which is made of a plurality of piezoelectric devices aligned along each ink passage, are formed through the respective ink passages. Ac voltages whose phases are different from each other by 90 degrees are applied to the respective piezoelectric devices. Progressive waves, which are excited by the rows of piezoelectric devices, allow ink to move through the ink passage and to be sprayed.
摘要:
In an optical memory medium comprising prepits on which a light spot is impinged to obtain information and, if required, guide grooves: each of those among the prepits which are longer than the diameter of the light spot consists of a series of pit portions and unpitted portions; each of the prepits is sandwiched between two of the discontinuous portions of guide grooves adjacent to each other; the guide grooves have one or more narrow portions, and each of the prepits is sandwiched between two of the narrow portions of guide grooves adjacent to each other; or the guide grooves have one or more long portions, one or more short portions, and narrow portions formed between the long and short portions, and each of the prepits is sandwiched between two of the short portions of guide grooves adjacent to each other.
摘要:
Methods for manufacturing an optical disk having spiral or concentric grooves and land portions between the grooves are disclosed. In one aspect, the methods include projection of light spots onto a photosensitive material so that areas of the photosensitive material exposed to a first light spot form the pattern of spiral or concentric grooves and that areas of said photosensitive material which correspond to said land portions and are exposed to a second light spot form a predetermined pit pattern.