摘要:
A method for manufacturing a printed wiring board includes forming a pad for mounting an electronic component on a resin layer, forming a solder-resist layer on the resin layer and the pad, exposing an upper surface of the pad and a portion of a side wall of the pad from the solder-resist layer, and forming a metal layer on the upper surface of the pad and the portion of the side wall of the pad.
摘要:
An elevating machine control apparatus controls an inverter (4) to drive an AC motor (5) connected to the inverter (4) with AC power, and energizes a power generation braking resistor (13) to apply a brake during regenerative operation of the AC motor (5). The apparatus prohibits the elevating machine from starting operating and interrupts power supply to the power generation braking resistor (13) if the DC stage voltage of the inverter (4) has a ripple quantity of a set value or more when the elevating machine is being stopped. Alternatively, the apparatus commands the elevating machine to stop operating and interrupts power supply to the power generation braking resistor (13) if the DC stage voltage of the inverter (4) during regenerative operation is a reference value or less when the elevating machine is in operation.
摘要:
An object to be inspected is, for example, a medical capsule having differently colored surface areas. A beam splitter divides light reflected by the surface of the object into two parts. Each of the divided parts of the light is passed through an optical filter whose transmission wavelength range is set according to the colors of the object, to adjust the quantity of transmitted light from a high-brightness part of the object surface and the quantity of transmitted light from a low-brightness part of the object surface to a reference level. Image pick-up elements pick up images of the object surface according to the divided parts of the light and provide image signals. One of the image signals is selected and provided outside. Unlike a prior art that adjusts levels of signals by amplifying the signals according to brightness of an inspected object, the method and apparatus of the invention do not involve amplification. The invention, therefore, never amplifies noise components to cause errors in inspection, thereby improving inspection accuracy.
摘要:
A cantilever has a probe on one side of the end portion and a mirror on the opposite side. The cantilever is fixed to a support member via a piezoelectric element. A semiconductor laser situated above the mirror has a reflection cleavage plane and constitutes a Fabry-Perot resonator between the mirror and the reflection cleavage plane. The output from the resonator varies in accordance with the amount of displacement of the end portion of the cantilever, that is, the surface configuration of the sample. This variation is detected by a detector via a photodetector. A control circuit controls a driving voltage applied to an XYZ-scanner so as to cancel the variation of the output from the resonator, thereby keeping constant the distance between the tip of the probe and the surface of the sample. The driving voltage provides height data of the sample surface. The driving voltage, along with a position signal relating to the sample surface output from the XYZ-scanner, is supplied to an image forming unit. The image forming unit generates a three-dimensional image representing the surface configuration of the sample, on the basis of the input voltage and signal.
摘要:
A light beam from a light source is divided into two beams by a polarized beam splitter. The beam is reflected by a mirror, is converted into a P-polarized beam by a 1/4 .lambda. plate, passes through the beam splitter, is reflected by prisms, passes through a polarized beam splitter, is reflected by a mirror, is converted into a S-polarized beam by a 1/4 .lambda. plate, is reflected by the beam splitter, and is finally incident on a detector. The beam is converted into a S-polarized beam by a 1/2 .lambda. plate, is reflected by a polarized beam splitter, is reflected by the upper face of a cantilever supporting a probe, passes through a polarized beam splitter, is reflected twice in a prism, passes through the beam splitter, is reflected again by the cantilever, is converted into a S-polarized beam by a 1/4 .lambda. plate, is reflected by the beam splitter, is converted into a P-polarized beam by a 1/2 .lambda. plate, passes through the beam splitter, and is finally incident on the detector. The detector outputs the displacement of the cantilever from the optical path difference of the beams Lr and Lt.
摘要:
A three-dimensional tunnel memory device includes a multilayer Langmuir-Blodgett film wherein each layer can store or carry an electric charge. Charges are introduced into one side of the film in a time sequence corresponding to the information to be carried. An electric field is applied between the faces of the film to cause the charge stored by any layer to be transferred to the adjacent layer, and for thus reading out the sequence of charges stored by the film. The multilayer Langmuir-Blodgett film includes memory unit cells each comprising Langmuir-Blodgett films formed, respectively, of different kinds of organic compounds and contacting each other. Electric fields of different magnitudes are applied, respectively, to the film constituting each memory unit cell thereby allowing the stored charge in each film constituting the memory unit cell to hop the tunnel barrier.
摘要:
An electrophotographic process employs an electrophotographic photosensitive member of a basic construction in which a photoconductive layer and a transparent insulator layer are sequentially laminated on the surface of a conductive supporter. The process in one preferred embodiment comprises a first step of providing a primary charge uniformly from the surface side of the transparent insulator layer, a second step of performing a secondary corona charging during an imagewise exposure by applying an a.c. voltage in which the firing angle of a negative half wave is controlled in phase to be within a phase angle corresponding to a lower voltage than the firing angle so that the positive discharge period may be longer than the negative one during one period, and a third step of forming an electrostatic latent image on the transparent insulator layer by applying a uniform exposure.
摘要:
An automatic surface inspection system includes a surface scanner for scanning the inner surface of a paper cup rotated about its own axis and a preprocessing section receiving a picture element signal from the surface scanner for outputting a digital picture element signal to a reference axis setting circuit for detecting a reference axis in the sub-scanning direction. A first and a second discriminating circuit receives the digital picture element signal for conducting a surface inspection. The first circuit handles the main scanning direction while making necessary masking treatment in the main scanning direction and the second discriminating circuit handles the sub-scanning direction while making necessary masking treatment in the sub-scanning direction. A mask pattern circuit has a reference memory adapted to supply the discriminating circuit with pattern information. Thereafter, the respective discriminating circuits perform masking processing in real time on the basis of mask pattern information and corresponding portion from the reference memory so as to a total discriminating circuit decides whether or not the surface of said object inspected is acceptable or defective.