Abstract: A field-effect transistor is fabricated by depositing and patterning a layer of a semiconductor material and a first dielectric film to form a gate electrode covered by the remaining part of the first dielectric film, depositing a second dielectric film to form sidewalls on the gate electrode and first dielectric film, implanting a first impurity into the substrate to form source and drain regions, forming a third dielectric film masking at least the inner parts of the source and drain regions while exposing the first dielectric film, removing the first dielectric film by etching, and implanting a second impurity into the gate electrode. The first and second impurities may be, for example, boron difluoride and boron, respectively. The implantation parameters can be adjusted to form shallow source and drain regions and form a fully doped gate electrode.

Abstract: To provide a quite novel automotive vehicle floor mat and an automotive vehicle floor mat retainer unit, in which retainer pins and retainer holes are provided at two positions to make it possible to positively perform the positioning upon laying the mat, and in addition, the positions and the arrangement interval of these retainer pins and the retainer holes are suitably selected to thereby dispense with using a structure for adjusting the interval between the retainer pins, also to cope with change of the hole positions due to the aging change, to make it possible to use the mat for a long period of time without a fear that the retainer pins could not be fitted into the retainer holes, to narrow the interval not too much to thereby make it possible to perform the positive positioning upon laying the mat, i.e.

Abstract: A semiconductor element has an upper wiring layer and a lower wiring layer. These layers communicate with each other via a via-hole. The via-hole is filled with W. Before W is filled in the via-hole by a CVD process to connect the lower wiring layer to the upper wiring layer, a cleaning gas is supplied into the via-hole to remove particular substances, which would otherwise result in high resistance. Subsequent to the cleaning step, the W portion is formed in the via-hole. Since the high resistance substances are removed from the via-hole before the formation of the W portion, the semiconductor element (or the via-hole) has a low resistance and high reliability.

Abstract: A drill set for adjusting an implant hole for a self-tap dental screw implant fixture comprises with a diameter d2 at the point of a cutting blade equivalent to a diameter D3 Of the tip end of the fixture, a diameter d1 at the back end of the blade equivalent to the maximum root diameter of a first male screw 1e or smaller, and a length l1 of the blade larger than the entire length L1 of the fixture 1, and the second drill 3 with a diameter d5 at the point of a tapered tip end cutting blade 3b equivalent to the diameter D3, and a diameter d3 at the back end of a tapered back end cutting blade 3a equivalent to the maximum root diameter of the first male screw 1e and being smaller than the maximum crest diameter thereof, both the blades 3a, 3b forming two-step taper shape.

Abstract: A motor has a stator assembly, a rotor assembly having a rotary shaft, a bearing unit that rotatably supports the rotary shaft with respect to the stator assembly, and a case body that generally houses the stator assembly and the rotor assembly. The case body includes a bottom surface section, a recessed concave section that is located radially inside the bottom surface section and concaves inwardly in an axial direction at an area opposing an excitation coil of the stator assembly, and a bearing retaining section that is formed radially inside the recessed concave section, wherein at least one part of the bearing retaining section is located more interior in the axial direction than the bottom surface section.

Abstract: A bearing structure comprises a rotational shaft and a bearing member. The rotational shaft has a pair of flanges, and a small diameter portion provided between the flanges. The flanges have first tapered surfaces. The first tapered surfaces taper down to the diameter of the small diameter portion as the first tapered surfaces approach the small diameter portion. The bearing member has a support groove to support the small diameter portion, and second tapered surfaces formed between the support groove and restraining surfaces connected by the support groove. The small diameter portion is fit in the support groove while the first tapered surfaces are engaged with the second tapered surfaces. A flank is formed on at least one part of the flanges that face each other and at substantially the same circumferential position on the flanges, to form a gap with one of the second tapered surfaces.

Abstract: The printing ink of the present invention is characterized by containing a photo-curable high polymer precursor, and a photopolymerization initiator, and containing 3 to 8 parts by weight of inorganic fine particles having a mean particle size of 0.1 &mgr;m or less to 100 parts by weight of the high polymer precursor. Moreover, the printing ink of the present invention is characterized by having a viscosity at a shear rate of 5 (l/s) of 8 to 75 (Pa·s), a viscosity at a shear rate of 20 (l/s) of 3 to 25 (Pa·s), and a thixotropic index value of 1.5 to 3.5. As a result of using this printing ink, letters, figures, symbols, graphics, etc., having a thickness of 0.2 mm or more can be printed rapidly without affecting the printed base material.

Abstract: A cap has a plug portion, a seal plug and a sleeve. At the plug portion a side and a cylindrical wall project from a top board. An inner circumferential surface of the side wall fits on an outer circumferential surface of an opening portion of a vessel and covers the opening portion with the top board. The cylindrical wall forms a receiving chamber having an opening mouth at its under end face. The seal plug seals the opening mouth. The sleeve is loosely fitted on the cylindrical wall and opens the opening mouth by separating the seal plug from the cylindrical wall at relative movement of the cap. A sepal portion on the outer circumference of the sleeve is larger than inner diameter of the opening portion at its outer diameter and has flexibility to pass the inner diameter bending so as to avoid backward moving.

Abstract: An apparatus to charge and seal in contents is provided with a supporting portion for containers, holding portions for seal plugs, airtight chambers, a pressure gas supplier and a vacuum pump. The container has a receiving chamber and it is to be put on the supporting portion being the chamber is charged with contents and being the chamber's opening portion faced upward. The seal plug is for sealing the opening portion. The airtight chamber is composed of a main portion and a cap portion. The main and cap portions freely move relatively and freely contact tightly, then they surround the supporting and the holding portions in airtight condition. Further, the supporting portion and the main portion freely move relatively in airtight condition, so as the holding portion and the cap portion do, and the supporting portion and the holding portion are freely separated from each other.

Abstract: In an image forming apparatus having a plurality of developing devices, the timing for discharging toner in a developing device, in which toner of a previously formed toner image has mixed, is determined by comparing an integrated area of a toner image developed by an upstream-side developing device and an integrated area of a toner image developed by this developing device.

Abstract: This invention relates to a CMOSFET 10 in which a p-type gate electrode 32a and an n-type gate electrode 32b are formed on a silicon substrate 12. The p-type gate electrode 32a comprises, in order, a p-type polycrystalline silicon layer 22a and a tungsten silicide layer 26a. The n-type gate electrode 32b comprises, in order, an n-type polycrystalline silicon layer 22b and a tungsten silicide layer 26b. A carbon-containing polycrystalline silicon layer 24, which is an impurity thermal diffusion prevention layer to suppress the interdiffusion of impurities, is provided between the p-type polycrystalline silicon layer 22a and the tungsten silicide layer 26a.

Abstract: An LCD section of a control panel displays an AUTO key and a manual key for adjusting the density of an image, and an AUTO key and a manual key (TRANSFER INTENSITY) for directly varying transfer biases. When the AUTO of the TRANSFER INTENSITY has been depressed, a printer CPU causes a transfer bias control section to perform a control to set the transfer biases from DC power supplies associated with respective colors at normal conditions in accordance with a print ratio or average reflectance of an original. When the manual key of the TRANSFER INTENSITY is set to the right side, the printer CPU increases stepwise the transfer biases in accordance with the setting. When the manual key is set to the left side, the printer CPU decreases stepwise the transfer biases in accordance with the setting.

Abstract: A convey belt is charged only while a sheet is placed and chucked on it. A transfer member for applying a transfer bias is grounded while a transfer bias is not applied, and an electric field is formed on the transfer member side, so that discharge from the surface of the convey belt to the photosensitive body side is suppressed. While transfer is not performed, a bias lower than the bias applied during transfer is applied to the transfer member, so the potential of the transfer member becomes lower than the surface potential of the convey belt. The polarity of the charges applied to charge the convey belt is set to be equal to that of charges applied to charge the photosensitive body. While chucking a sheet, the surface of the convey belt is charged. During the remaining period, an AC bias is applied to the convey belt in order to remove charges from the surface of the convey belt. With any one of the above arrangements, high quality image formation is enabled.

Abstract: A method of manufacturing the separator of the proton exchange fuel cell. In a cell stack of a proton exchange fuel cell, the cell stack composed by laminating a plurality of unit cells and a plurality of separators, each of the unit cells composed of an anode electrode, a cathode electrode and a solid polymer electrolytic membrane arranged between the anode and cathode electrodes, each of the separators arranged between the unit cells, respectively, the method of manufacturing the separator of the proton exchange fuel cell, includes the steps of, preparing step for preparing raw material for the separator, the raw material composed of alloy material including light metal, such as aluminum or magnesium, as a main component, and forming step for forming the separator from the raw material by die casting.

Abstract: An apparatus to charge and seal in contents is provided with a supporting portion for containers, holding portions for seal plugs, airtight chambers, a pressure gas supplier and a vacuum pump. The container has a receiving chamber and it is to be put on the supporting portion being the chamber is charged with contents and being the chamber's opening portion faced upward. The seal plug is for sealing the opening portion. The airtight chamber is composed of a main portion and a cap portion. The main and cap portions freely move relatively and freely contact tightly, then they surround the supporting and the holding portions in airtight condition. Further, the supporting portion and the main portion freely move relatively in airtight condition, so as the holding portion and the cap portion do, and the supporting portion and the holding portion are freely separated from each other.

Abstract: A bearing structure comprises a rotational shaft and a bearing member. The rotational shaft has a pair of flanges, and a small diameter portion provided between the flanges. The flanges have first tapered surfaces. The first tapered surfaces taper down to the diameter of the small diameter portion as the first tapered surfaces approach the small diameter portion. The bearing member has a support groove to support the small diameter portion, and second tapered surfaces formed between the support groove and restraining surfaces connected by the support groove. The small diameter portion is fit in the support groove while the first tapered surfaces are engaged with the second tapered surfaces. A flank is formed on at least one part of the flanges that face each other and at substantially the same circumferential position on the flanges, to form a gap with one of the second tapered surfaces.

Abstract: A brush encoder includes a coding-plate support member, to which a coding plate is fixed, and a brush support member, to which a brush is fixed, the brush having a base portion and resilient contact strips. The brush support member includes a support surface to which the base portion of the brush is mounted; at least one through slot through which the resilient contact strips of the brush extend to come in sliding contact with the coding plate; and a fulcrum portion, which contacts the base portion of the brush in the vicinity of a border between the base portion and the resilient contact strips, so as to serve as a fulcrum about which the brush is biased to rotate in a direction to make the base portion contact the support surface when the resilient contact strips are pressed against the coding plate.

Abstract: A motor has a stator core having a plurality of salient poles and stator coils wound on the salient poles, respectively, each of the stator coils having a common side coil end part and a coil winding part. The common side coil end part of each of the stator coils extends radially outward from corresponding one of the coil winding parts into a region radially outside of the corresponding coil winding part of the corresponding stator coil. Then, the common side coil end part is bent to extend in the circumferential direction towards adjacent one of the salient poles in the circumferential direction, and connects electrically to a common side coil end part of adjacent one of the stator coils, wherein the common side coil end parts are joined to surround in a circular ring-shaped manner an entire outer circumference of the stator core.

Abstract: A motor has a stator assembly, a rotor assembly having a rotary shaft, a bearing unit that rotatably supports the rotary shaft with respect to the stator assembly, and a case body that generally houses the stator assembly and the rotor assembly. The case body includes a bottom surface section, a recessed concave section that is located radially inside the bottom surface section and concaves inwardly in an axial direction at an area opposing an excitation coil of the stator assembly, and a bearing retaining section that is formed radially inside the recessed concave section, wherein at least one part of the bearing retaining section is located more interior in the axial direction than the bottom surface section.

Abstract: An LCD section of a control panel displays an AUTO key and a manual key for adjusting the density of an image, and an AUTO key and a manual key (TRANSFER INTENSITY) for directly varying transfer biases. When the AUTO of the TRANSFER INTENSITY has been depressed, a printer CPU causes a transfer bias control section to perform a control to set the transfer biases from DC power supplies associated with respective colors at normal conditions. When the manual key of the TRANSFER INTENSITY is set to the right side, the printer CPU increases the transfer biases in accordance with the setting. When the manual key is set to the left side, the printer CPU decreases the transfer biases in accordance with the setting.