Abstract: An electrophotographic photoreceptor includes a conductive substrate, an undercoat layer disposed on the conductive substrate, having a volume resistivity of 5.0×107 [?m] or more and 5.0×109 [?m] or less, and having a thickness of 20 ?m or more and 40 ?m or less, a charge generation layer disposed on the undercoat layer, and a charge transport layer disposed on the charge generation layer, having a volume resistivity of 1.0×1013 [?m] or more and 5.0×1014 [?m] or less, and having a thickness of 15 ?m or more and 40 ?m or less.

Abstract: An image forming apparatus includes an electrophotographic photoreceptor that includes a conductive substrate and a photosensitive layer disposed on the conductive substrate, the electrophotographic photoreceptor having an outermost surface layer that contains a binder resin, a charge-transporting material, and a fluorine-containing resin particle, the fluorine-containing resin particle containing 0 or more and 30 or less carboxy groups per 106 carbon atoms, a charging device that charges the electrophotographic photoreceptor, an electrostatic latent image forming device that forms an electrostatic latent image on the electrophotographic photoreceptor that is charged, a developing device that houses a developer containing a toner and that develops, with the developer, the electrostatic latent image formed on the electrophotographic photoreceptor into a toner image, a transfer device that transfers the toner image onto a transfer-receiving medium, and an optical discharging device that, after the toner image i

Abstract: A receptacle, fixed to a first case, has a central conductor portion, an outer conductor portion that concentrically surrounds the central conductor portion, and a receptacle-side convex portion that extends in a connector circumferential direction and is formed on a top end portion of the outer conductor portion. A plug, fixed to a second case, has a plurality of inner contact pieces that make contact with an outer peripheral surface of the central conductor portion with fitting into the receptacle, a plurality of outer contact pieces that extend in a connector axial direction on an outer peripheral surface of the outer conductor portion with intervals therebetween, and plug-side convex portions that are freely displaceable in the connector axial direction in a state of being in surface contact with the outer peripheral surface of the outer conductor portion and are formed on the outer contact pieces of the plug.

Abstract: A receptacle, fixed to a first case, has a central conductor portion, an outer conductor portion that concentrically surrounds the central conductor portion, and a receptacle-side convex portion that extends in a connector circumferential direction and is formed on a top end portion of the outer conductor portion. A plug, fixed to a second case, has a plurality of inner contact pieces that make contact with an outer peripheral surface of the central conductor portion with fitting into the receptacle, a plurality of outer contact pieces that extend in a connector axial direction on an outer peripheral surface of the outer conductor portion with intervals therebetween, and plug-side convex portions that are freely displaceable in the connector axial direction in a state of being in surface contact with the outer peripheral surface of the outer conductor portion and are formed on the outer contact pieces of the plug.

Abstract: A rotation mechanism for mounting and rotatably supporting a laser emitter thereon includes a casing including a bottom wall and a side wall connected to the bottom wall, said casing defining therein a receiving space. A plurality of rotation rings are arranged as being layered with each other in the receiving space of the casing. The rotation rings include an uppermost rotation ring in the form of a manual coarse rotation ring that is directly connected to the laser emitter so as to support the laser emitter, for manually rotating the laser emitter to achieve a coarse angular positioning thereof, an automatic coarse rotation ring for rotating the laser emitter at a relatively high speed together with the rotation ring thereon, a manual fine rotation ring for slightly rotating the laser emitter manually together with the rotation ring thereon, and an automatic fine rotation ring for rotating the laser emitter at a relatively low speed, together with the rotation ring thereon.

Abstract: The present invention provides a noninvasive alcohol sensor that measures ethanol concentration with high accuracy by suppressing error dependent on glucose concentration. An alcohol sensor 10 includes first light-emitting means 21, second light-emitting means 22 and third light-emitting means 23. The first light-emitting means 21 radiates light having a wavelength of 1185 nm. This wavelength of 1185 nm is a wavelength at which the light absorbance of water and the light absorbance of ethanol are equal. The second light-emitting means 22 radiates light having a wavelength of 1710 nm. The third light-emitting means 23 radiates light having a wavelength of 1750 nm. Light detection means 30 detects the intensity of each light, and control means 60 calculates ethanol concentration based on the detected light intensity.

Abstract: A rotation mechanism for mounting and rotatably supporting a laser emitter thereon includes a casing including a bottom wall and a side wall connected to the bottom wall, said casing defining therein a receiving space. A plurality of rotation rings are arranged as being layered with each other in the receiving space of the casing. The rotation rings include an uppermost rotation ring in the form of a manual coarse rotation ring that is directly connected to the laser emitter so as to support the laser emitter, for manually rotating the laser emitter to achieve a coarse angular positioning thereof, an automatic coarse rotation ring for rotating the laser emitter at a relatively high speed together with the rotation ring thereon, a manual fine rotation ring for slightly rotating the laser emitter manually together with the rotation ring thereon, and an automatic fine rotation ring for rotating the laser emitter at a relatively low speed, together with the rotation ring thereon.

Abstract: A connection adapter includes first interfaces, second interfaces for connection to communication devices connected to a radio packet communication network, and a conversion circuit performing mutual conversion between an input/output signal from or to high-level equipment and an input/output signal from or to the communication device. The conversion circuit receives or supplies from or to the high-level equipment a signal simulating the communication device connectable to the high-level equipment and receives or supplies from or to the communication device a signal simulating the high-level equipment connectable to the communication device.