Abstract:
A silicon oxide film and a polysilicon film are formed on a silicon substrate and are selectively etched to form a contact hole in a region where an emitter is to be formed. A polysilicon film is laid on the substrate and two polysilicon films are patterned to form an emitter electrode and a gate electrode made of the two polysilicon films which are doped with arsenic. The arsenic is diffused from the polysilicon films of the emitter electrode into the silicon substrate to form an N.sup.+ emitter layer which has a high concentration and is shallow. Consequently, the contamination of a gate insulator film can be prevented from occurring and a bipolar transistor having high performance, for example, a high current amplification factor or the like can be formed.
Abstract:
An image forming apparatus capable of forming both of erasable images and images to be stored, and increasing the number of times that a single sheet with an image can be repetitively decolorized and reused. The apparatus includes a photoconductive element for electrostatically forming a latent image representative of image data. A developing device develops the latent image formed on the photoconductive element by either of an ordinary undecolorizable toner and a decolorizable toner.
Abstract:
A method of fabricating a semiconductor device includes the steps of forming a base diffusion layer in a predetermined region in a semiconductor substrate of a first conduction type, the base diffusion layer being of a second conduction type; forming first insulating films and simultaneously forming an emitter lead-out electrode and a collector lead-out electrode in regions above an emitter-contact-forming region and a collector-contact-forming region, the first insulating extending films on the emitter and collector lead-out electrodes, the emitter and collector lead-out electrodes including impurity corresponding to the first conduction type; forming second insulating films at sides of the emitter and collector lead-out electrodes; forming a base contact; forming a base lead-out electrode including impurity corresponding to the second conduction type; diffusing the impurity from the emitter lead-out electrode, the collector lead-out electrode, and the base lead-out electrode to form an emitter diffusion layer of the first conduction type, a collector contact diffusion layer of the first conduction type, and a base contact diffusion layer of the second conduction type; locating an end of the emitter diffusion layer and a first end of the base contact diffusion layer at positions directly below a portion of the second insulating films which extends at a side of the emitter lead-out electrode; and locating a second end of the base contact diffusion layer and an end of the collector contact diffusion layer at positions directly below a portion of the second insulating films which extends at a side of the collector lead-out electrode.
Abstract:
The present invention provides a semiconductor device, in particular, a semiconductor device comprising a vertical npn transistor, a vertical pnp transistor and an IIL which are integrated on the same one-conductivity type semiconductor substrate (1). The IIL comprises an emitter, a base and a collector which are respectively comprised of a high-density n.sup.+ -type first buried layer (5), a p.sup.+ -type second buried layer (8) having a lower impurity density than the n.sup.+ -type first buried layer (5), and at least one of n.sup.+ -type diffused layer (31).The semiconductor device thus constituted makes it possible to increase the emitter injection efficiency while the base impurity density is kept high, and also to decrease the base width, so that the collector-emitter breakdown voltage and current gain of the IIL can be more improved and also the operation speed of the IIL can be made higher.
Abstract:
A method for forming a duplex print, in which a recording sheet has images formed on both sides thereof, includes steps of: setting an interleave number depending on a size of the recording sheet; forming the duplex prints under a condition where the number of the recording sheets located in a transport path is equal to or less than the interleave number; determining whether or not a size of the recording sheet supplied from a paper supplying unit is changed; changing the interleave number to a minimum interleave number when the size of the recording sheet is changed; forming the duplex prints with respect to the new sized recording sheet under a condition where the number of the recording sheet located in the transport path is equal to or less than the minimum interleave number. The present invention also provides an apparatus for forming a duplex print, which operates in accordance with the method for forming a duplex print.
Abstract:
A stepless speed change device comprises internally toothed ratchet rings arranged in plural rows side by side in an axial direction on an inner circumference of a driving rotary member on an input side through one-way clutches interposed therebetween, a stationary ring fixed to a frame of a bicycle and encircling the driving rotary member, a plurality of planet rollers rotatably fitted in the driving rotary member at plural locations, pawls in plural rows to engage ratchets of the internally toothed ratchet rings and having bottoms pivotally connected to an eccentric cam whose eccentricity relative to a center shaft is adjustable, and a resilient member provided in contact with the planet rollers to produce the frictional transmission between the stationary ring and the internally toothed ratchet rings respectively and the planet rollers. When the driving rotary member is being rotated the planet rollers are revolved together with the driving rotary member and at the same time are rotated about their axes with the aid of the frictional transmission and the internally toothed ratchet rings are rotated by the planet rollers with the aid of the frictional transmission.
Abstract:
An apparatus for measuring water in cow's milk. Sample milk is heated and dryed by microwaves in an oven made of a microwave waveguide. Weights of the sample before and after the drying of the sample are measured by an automatic balance. Weight signals obtained from the balance are memorized in a memory circuit to calculate the solid material ratio or water ratio of the sample milk. A water dummy is employed for stabilizing oven temperature. Support means for one or more additional sample plates may be arranged in the waveguide for preliminary drying of one or more filter paper in the additional sample plate to shorten the subsequent heating time of the sample milk.
Abstract:
A multi-layer woven or knitted fabric exhibiting reversibly changeable air permeability, which contains reversibly crimping cellulose acetate fibers exhibiting a percentage of crimp of less than 10% at a humidity of 95% or above and a percentage of crimp of 20% or above at a humidity of 45% or below and which has a basis weight of 100 to 350 g/m2. When water content of the fabric is enhanced by the absorption of water or moisture, the air permeability of the fabric increases to inhibit in-clothes stuffiness or stickiness due to sweat and in-clothes temperature rise, while when the fabric has discharged the water into the outside environment, the air permeability of the fabric decreases to the original one to prevent the body temperature from lowering excessively because of the heat of vaporization and thus keep the in-clothes environment comfortable.
Abstract translation:一种表现出可逆变化的透气性的多层机织或针织物,其含有可逆卷曲的醋酸纤维素纤维,其在95%或更高的湿度下的卷曲百分比小于10%,卷曲百分比为20%或更高 湿度为45%以下,基重为100〜350g / m 2。 当织物的含水量通过吸收水分或水分而增加时,织物的透气性增加,以防止由于汗水和衣物温度上升引起的衣服内的闷热或粘性,而当织物将水排出时 在外部环境下,织物的透气性降低到原来的透气度,以防止由于蒸发热而使体温过度下降,从而保持衣物中的环境舒适。
Abstract:
The present invention aims at providing a method for designing a glass-plate-aimed bending mold making use of a 3-dimensional CAD application for solid models, in a short time with simple operations, by utilizing a previously designed solid model. To this end, there is modified a ring frame of a solid model of a mold stored in an existing-solid-model storing part, such that the ring frame conforms to the shape of a new glass plate, by glass shape replacing means. By using modified parameter reflecting means, the modification of the modifiable parameters inherited from the existing solid-model is reflected to the modified solid model, to thereby optimize the modifiable parameters of a new solid model.