摘要:
A discomfort index, S, is calculated with an equation, S=0.3135×(Loudness value)+3.4824×(Tonality value)−3.1460. This equation uses a loudness value and a tonality value, both psychoacoustic parameters obtained from a sound from the image forming apparatus at a location 1.00 m±0.03 m apart from an end of the image forming apparatus. A sound caused at the time of charging an image carrier is improved so that the discomfort index S satisfies S
摘要:
An electronic component including a substrate having a surface and one or more trench portions opening on the surface, a capacitor portion having a lower electrode formed on the surface of the substrate and on the wall surface of the trench portion, a dielectric layer formed on the lower electrode, and an upper electrode formed on the dielectric layer, a resin filler filling the space inside the trench portion lined by the upper electrode, an insulation layer formed on the surface of the substrate, a conductive portion formed on the insulation layer and positioned to cover the trench portion, and a via conductor connecting the conductive portion and one of the lower electrode and the upper electrode.
摘要:
An useful method of producing a lot of bearings in the form of a press worked bush is initiated with production of blanks having four corner edges chamfered. In the notch forming and cutting die section comprising upper and lower die halves a strip of metallic material that is called hoop is pressed stepwise to form a plurality of V-shaped notches of which depth increases stepwise toward the outlet of the die section. On completion of forming of notches the hoop is cut off at the center of the last V-shaped notch with the aid of a pair of cutting tools. The die assembly usable for carrying out the method includes an U-bending die section and a circle bending die section which are located in series. After leaving the notch forming and cutting die section a blank is introduced into the U-bending die section by utilizing feeding movement of the hoop of the notch forming and cutting die section and thus U-bent blank is subjected to final circular bending in the circle bending die section also by utilizing feeding movement of the hoop. No feeding device is required in each of the press working steps.
摘要:
A wiring board including a core substrate made of an insulative material and having a penetrating portion, a first interlayer insulation layer formed on the surface of the core substrate, a first conductive circuit formed on the surface of the first interlayer insulation layer, a first via conductor formed in the first interlayer insulation layer, and an electronic component accommodated in the penetrating portion of the core substrate and including a semiconductor element, a bump body mounted on the semiconductor element, a conductive circuit connected to the bump body, an interlayer resin insulation layer formed on the conductive circuit, and a via conductor formed in the interlayer resin insulation layer. The first via conductor has a tapering direction which is opposite of a tapering direction of the via conductor in the electronic component.
摘要:
A display apparatus comprises: a rear plate which has an electron-emitting device; a face plate which has an anode electrode and a potential defining electrode; and a plate spacer which is opposite to the anode electrode and the potential defining electrode, between the rear plate and the face plate. An insulative base member of the spacer has a recessed portion which opposes to the anode electrode, the potential defining electrode, and a portion of the face plate between the anode electrode and the potential defining electrode. Thus, electric discharges between the spacer and the anode electrode and between the spacer and the potential defining electrode can be suppressed.
摘要:
A display apparatus comprises: a rear plate which has an electron-emitting device; a face plate which has an anode electrode and a potential defining electrode; and a plate spacer which is opposite to the anode electrode and the potential defining electrode, between the rear plate and the face plate. An insulative base member of the spacer has a recessed portion which opposes to the anode electrode, the potential defining electrode, and a portion of the face plate between the anode electrode and the potential defining electrode. Thus, electric discharges between the spacer and the anode electrode and between the spacer and the potential defining electrode can be suppressed.
摘要:
A charged particle beam lens includes a first electrode including a surface having at least one aperture and a second electrode including a surface having at least one aperture. A support intervenes between the first electrode and the second electrode to electrically insulate the first and second electrodes from each other and to support the first and second electrodes in a predetermined positional relationship. A side surface of the support intervenes between the first electrode and the second electrode and includes a non-flat portion having at least one of a projected portion and a depressed portion, and includes a tapered portion. A taper angle formed by the tapered portion and the surface having the aperture of the second electrode is greater than zero degree and less than ninety degrees.
摘要:
A printed wiring board includes a first insulation layer, a first conductive circuit formed on the first insulation layer, a second insulation layer formed on the first insulation layer and the first conductive circuit and having an opening portion reaching the first conductive circuit, a second conductive circuit formed on the second insulation layer, and a via conductor formed in the opening portion and connecting the first conductive circuit and the second conductive circuit. The via conductor is formed an inner-wall surface of the opening portion and has a seed layer including a nitride compound and/or a carbide compound containing Ti, Zr, Hf, V, Nb, Ta or Si and a plated-metal film formed in the opening portion, and the plated-metal film and the first conductive circuit have at least portions making direct contact.
摘要:
A discomfort index of sound is obtained by an equation using the loudness value, sharpness value, tonality value and impulsiveness value of psychoacoustic parameters obtained from sounds at a position away from the end face of an image formation apparatus by 1 m. The discomfort index is decreased by reducing the high frequency component, charging noise, metallic impulsive sound and the like of the image formation apparatus, to thereby contribute to the improvement of the use environment.
摘要:
A paper handling device for an image forming apparatus accurately positions paper sheets having been driven out of the apparatus with their center being in register with a reference at a predetermined position for executing stapling or similar processing. The device shifts the discharged paper sheets to a one-side reference position while truing them up at a center reference position. Therefore, the paper sheets are located at the one-side reference position with accuracy and thereby stapled or otherwise processed accurately. The device simplifies the movement of an instrument for implementing such processing. A stack of discharged sheets, whether they are so processed or not, can be readily taken out from the device with no regard to the paper size. A pair of paper guide members urge paper sheets in such a manner as to enhance further accurate positioning of the latter.