摘要:
The direct current vibration motor comprises a stator, a rotor rotatably attached on this stator, and a cylindrical cover for sealing the rotor. The stator has four permanent magnets arranged in a ring-like configuration and magnetized in an axial direction. The rotor is provided with an armature eccentrically fixed to a portion in the circumferential direction of the rotation shaft. The armature comprises a first coil and a second coil. Furthermore, the armature is provided with a pin formed of a magnetic body for regulating the static position so that the first coil and the second coil are fixed at a position where the first coil and the second coil are deviated from the central position of the magnetic pole of the stator. Current is supplied to the coils with the commutator and the brushes arranged with the spatial phase angle of 90°.
摘要:
A semiconductor memory device according to the present invention is a dynamic type semiconductor memory device carrying out pipe line processing in page mode, including two column decoders, two address latches, two preamplifiers and two write drivers for one memory cell array. A column address supplied from an address buffer is provided sequentially and alternately to each of the address latches, whereby one of the column decoders, one of the preamplifiers and so on corresponding to the address latch operate alternately.
摘要:
The image density adjustment method for use in electrophotography in which, when the image density of a copied image is decreased below a standard image density, the development bias-potenial is increased while the exposure to be applied to a photoconductor is kept constant. When the image density of a copied image is increased above the standard image density, the exposure is decreased while the development bias voltage is kept constant. Thus, the image density of a copied image can be adjusted as desired to minimize the effect of light fatigue of the photoconductor.
摘要:
Provided is an electromechanical transducer device including a substrate that is conductive, and a plurality of electromechanical transducer elements disposed on a first surface of the substrate. A groove that electrically isolates the plurality of electromechanical transducer elements from each other is formed in the substrate, the groove extending from a second surface side of the substrate toward the first surface side of the substrate, the second surface being opposite the first surface. The width of the groove on the first surface side of the substrate is smaller than the width of the groove on the second surface side of the substrate.
摘要:
A potential sensor is provided in which the adhesion of toner particles to the potential sensor is reduced or prevented from occurring, reducing or preventing the occurrence of a situation that accurate detection cannot be performed. The potential sensor has a movable member, detecting electrodes formed on the movable member, a support which movably supports the movable member, a driving mechanism which drives the movable member, and a stationary member which supports the support. Between the movable member and the stationary member, a first gap is so formed as to make the movable member 101 movable. The first gap has a part that is not larger in width than the maximum size of toner particles when the movable member is not elastically deformed and is at a neutral position.
摘要:
The present invention is a bearing or seal structure 1 or 10 having a movable member and a stationary member. In the bearing or seal structure, at least one of the movable member 2 or 13 and the stationary member 4 or 14 is made of a material with a coefficient of thermal expansion of 8×106/° C. or less. Polycrystalline diamond is coated on a surface of the member made of the material which lies opposite the other member.
摘要:
A potential measurement apparatus is provided which can suitably maintain the oscillation state of an oscillator including a detection electrode and stably measure the potential of a measurement object. The potential measurement apparatus includes a bearing part, an elastic supporting part supported by the bearing part, an oscillator movably supported by the elastic supporting part, detection electrodes installed in the oscillator, a drive mechanism driving the oscillator and a signal detection unit. The signal detection unit is connected to the detection electrodes to detect electrical signals appearing in the detected electrodes. A stress detecting element for generating an electric signal according to the stress of the elastic suspension part 142 is provided.
摘要:
There is provided an image forming apparatus and method capable of reducing a measurement error in a measurement result of the surface potential of an electrostatic latent image formed on the surface of an image bearing member. The measurement error occurs under the influence of an electric field generated from a pre-exposed area. Consequently, miniaturization of an image forming apparatus and consistent print quality can be achieved. The image forming apparatus includes an image forming control section for determining an error correction value corresponding to the charge state of a latent image on the basis of relationships between charge states of the latent image and error correction values which have been prepared in advance, computing an error corrected potential measurement value using the error correction value and a potential measurement value, and controlling the image forming apparatus on the basis of the error corrected potential measurement value.
摘要:
A plurality of bit line pairs are divided into plural bit line groups. Each of the bit line groups comprises two bit line pairs. The two bit line pairs are respectively connected to a common sense amplifier through transistors. The two bit line pairs are respectively connected to a common data register via transistors. Either one of the two bit line pairs is connected to the sense amplifier by a switching signal. In addition, either one of the two bit line pairs is connected to the data register by a data transfer signal. One of the two bit line pairs in one of bit line groups and one of the two bit line pairs in the remaining bit line groups constitute a block. The other of the two bit line pairs in one of bit line groups and the other of the two bit line pairs in the remaining bit line groups constitute another block. A block operation can thus be divisionally carried out.
摘要:
An improved video RAM having two data registers for holding data of each row in a memory cell array 1. A transfer gate circuit transfers alternately data of each row of the memory cell array 1 to the two data registers. On the other hand, since a switching circuit selects data held in the two data registers alternately and provide the same serially. In addition, length of data to be provided can be controlled externally. When a special high speed data reading such as oblique reading is required, timing control of externally applied control signals can be simplified.