Abstract: An optical connection structure including N first inner housings, a first outer housing, N second inner housings, and a second outer housing. The respective first inner housings hold M first ferrules. The first outer housing holds the first inner housings in an arranged state. The respective second inner housings hold M second ferrules. The second outer housing holds the second inner housings in an arranged state. The optical connection structure includes a first latch mechanism that restrict a movement of the first inner housing relative to the first outer housing in a pullout direction, a second latch mechanism that couples the first inner housing and the second inner housing to each other, and a latch releasing mechanism that releases the first latch mechanism in a state where the first inner housing and the second inner housing are coupled to each other by the second latch mechanism.

Abstract: An optical connector according to an embodiment includes: an optical fiber extending along a connecting direction; a front housing in a tubular shape including a first opening and a second opening; a ferrule configured to retain the optical fibers and having a light incidence-emission part optically connected to a corresponding connector; a pin keeper configured to retain a guide pin inserted into the ferrule; and a rear housing fixed with the second opening covered and configured to support the coil spring in the inside of the front housing. The rear housing has an insertion hole into which the optical fiber is insertable from a direction intersecting with the connecting direction.

Abstract: An optical connector having a shutter is disclosed. The optical connector comprises an optical connection component configured to hold one or a plurality of optical fibers, and having a light incidence/emission end surface being movable in the connection direction with respect to the optical connection component; a second member having a shutter part that performs opening/closing of an opening, the second member being attached to the first member in a state of being rotatable around a rotation axis; a first sealing member contacting the first member over a whole circumference of the opening, the first sealing member also contacting the shutter part over the whole circumference of the opening when the shutter part is in a closed state; and a linkage mechanism that rotates the second member in conjunction with movement of the first member along the connection direction with respect to the optical connection component.

Abstract: An optical connector ferrule according to an embodiment includes an MT ferrule, and a spacer mounted on an optical end surface of the MT ferrule and having a guide hole into which a guide pin is inserted. The spacer has a contact surface that contacting the counterpart connector and a recess surrounded by the contact surface. The spacer includes a lens part exposed on a bottom surface of the recess and optically coupled to the optical end surface of the MT ferrule and a base part that retains the lens part by surrounding the lens part. The material of the lens part and the material of the base part are different from each other, and the difference between the linear expansion coefficient of the base part and the linear expansion coefficient of the MT ferrule is 0.5×10?5/° C. or less.

Abstract: An electrostatic charge image developing toner includes: toner particles including an amorphous resin and a crystalline polyester resin including a polycondensate of a linear dicarboxylic acid and a linear dialcohol having 2 to 12 carbon atoms; and an external additive including silica particles having a BET specific surface area of 100 m2/g or more. The electrostatic charge image developing toner satisfies the expression: 0.05??H2/?H1?0.95, wherein ?H1 (mW/g) is an endothermic energy amount based on an endothermic peak derived from the crystalline polyester resin in a first temperature increase process in differential scanning calorimetry according to ASTM D3418-8 (2008), and ?H2 (mW/g) is an endothermic energy amount based on an endothermic peak derived from the crystalline polyester resin in a second temperature increase process in differential scanning calorimetry according to ASTM D3418-8 (2008).

Abstract: A optical connection structure that includes a plurality of optical connectors and a housing is disclosed. In the optical connection structure, each optical connector includes a first and a second end surfaces. Each connector hole of the housing includes first and second inner wall surfaces facing each other. The first end surface includes a first guide rail. The second end surface includes a second guide rail or a latch. The first inner wall surface includes first guide rail fitting sections provided corresponding to the respective optical connectors, the first guide rail fitting sections being slidably fitted to the first guide rails. The second inner wall surface includes second guide rail fitting sections provided corresponding to the respective optical connectors and being slidably fitted to the second guide rails, or latch engagement sections provided corresponding to the respective optical connectors, the latches being engaged with the latch engagement sections.

Abstract: An electrostatic charge image developer contains a carrier including a core and, on the core, a silicone resin-containing layer serving as a lower layer, and an acrylic resin-containing layer serving as an upper layer, or a carrier including a silicone resin-containing core and an acrylic resin-containing layer on the silicone resin-containing core; strontium titanate particles having an average primary particle size of 20 nm or more and 100 nm or less; and a toner. The percentage of a silicone resin exposed on a surface of the carrier is 0.5 area % or more and 20 area % or less.

Abstract: The present invention relates to a high-voltage submersible motor and a waterproof connector for use in the submersible motor. The submersible motor includes a motor body (36), a power cable (37a), a cable contact (50) electrically connected to the power cable (37a), a cable-side insulating member (49) to which the cable contact (50) is liquid-tightly coupled, a motor contact (42) connected to the cable contact (50), a motor-side insulating member (41) to which the motor contact (42) is liquid-tightly coupled, and an insulating resin (93) that fills an enclosed space (60) formed between the cable-side insulating member (49) and the motor-side insulating member (41). A connecting portion of the cable contact (50) and the motor contact (42) is covered with the resin (93).

Abstract: A connector plug according to an embodiment includes a flange attached to a ferrule of an optical connector, a plug frame containing the flange, and a first spring and a second spring interposed between the flange and the plug frame. The flange has outer surfaces, the plug frame has inner surfaces, the first spring is interposed between the outer surface and the inner surface, the second spring is interposed between the outer surface and the inner surface, the outer surface and the inner surface are in contact with each other, and the outer surface and the inner surface are in contact with each other.

Abstract: A fusion splicer for fusion-splicing a first group of optical fibers and a second group of optical fibers by arc discharge is disclosed. The fusion splicer includes first and second electrode rods, first and second fiber holding parts, and a first shield. The electrode rods generate the arc discharge therebetween. The first fiber holding part has a first plurality of V-grooves positioning the first group of optical fibers. The second fiber holding part has a second plurality of V-grooves positioning the second group of optical fibers. The first shield is located between the first and second plurality of V-grooves and the first electrode rod in a direction along a center line connecting a tip of the first electrode rod to a tip of the second electrode rod. The first shield is formed of an insulating material having heat resisting properties withstanding 1000 or more degrees Celsius.

Abstract: An electrostatic charge image developer contains a carrier including a core and, on the core, a silicone resin-containing layer serving as a lower layer, and an acrylic resin-containing layer serving as an upper layer, or a carrier including a silicone resin-containing core and an acrylic resin-containing layer on the silicone resin-containing core; strontium titanate particles having an average primary particle size of 20 nm or more and 100 nm or less; and a toner. The percentage of a silicone resin exposed on a surface of the carrier is 0.5 area % or more and 20 area % or less.

Abstract: An optical connector according to an embodiment includes: an optical fiber extending along a connecting direction; a front housing in a tubular shape including a first opening and a second opening; a ferrule configured to retain the optical fibers and having a light incidence-emission part optically connected to a corresponding connector; a pin keeper configured to retain a guide pin inserted into the ferrule; and a rear housing fixed with the second opening covered and configured to support the coil spring in the inside of the front housing. The rear housing has an insertion hole into which the optical fiber is insertable from a direction intersecting with the connecting direction.

Abstract: A developer set includes a first developer and a second developer. The first developer includes a first toner and a first carrier. The second developer includes a second toner and a second carrier. The second toner is a toner that includes a flaky brilliant pigment, a toner that includes a white pigment, or a transparent toner. The second carrier has a higher volume resistivity than the first carrier and has a larger volume average particle diameter than the first carrier.

Abstract: An optical connector ferrule comprises a body and a spacer. The body has a flat ferrule end surface facing a corresponding optical connector, and an optical fiber retaining hole opened in the ferrule end surface, an optical fiber being inserted and retained in the optical fiber retaining hole. The spacer is joined to the body, and at least a portion of the spacer is disposed on the ferrule end surface. The spacer defines an interval between the ferrule end surface and the corresponding optical connector, and includes an opening that allows an optical path extending from the optical fiber to pass therethrough.

Abstract: An optical connector ferrule includes optical fiber holding hole holding an inserted optical fiber, a ferrule end face facing a coupled-side optical connector ferrule, a lens structure provided on an axis line of the optical fiber holding hole on the ferrule end face, and an inspection hole formed along the optical fiber holding hole. The ferrule end face is flat on at least an axis line of the inspection hole, and refractive-index distribution in an area between the ferrule end face and a back side thereof is uniform.

Abstract: A receptacle connector comprises a receptacle ferrule, and a receptacle housing including a cavity housing the receptacle ferrule and a cavity housing a plug connector. The receptacle ferrule includes an optical coupling surface (front surface). An opening area of the cavity on a cross section vertical to an inserting direction of the plug connector to the receptacle housing is smaller than an opening area of the cavity on the cross section vertical to the inserting direction. In a second state after being optically coupled, the optical coupling surface (front surface) is positioned inside the cavity.

Abstract: The present invention relates to a high-voltage submersible motor and a waterproof connector for use in the submersible motor. The submersible motor includes a motor body (36), a power cable (37a), a cable contact (50) electrically connected to the power cable (37a), a cable-side insulating member (49) to which the cable contact (50) is liquid-tightly coupled, a motor contact (42) connected to the cable contact (50), a motor-side insulating member (41) to which the motor contact (42) is liquid-tightly coupled, and an insulating resin (93) that fills an enclosed space (60) formed between the cable-side insulating member (49) and the motor-side insulating member (41). A connecting portion of the cable contact (50) and the motor contact (42) is covered with the resin (93).

Abstract: A method includes determining whether an electronic source link of a curated item is broken. In response to the electronic source link not being broken, the method includes determining whether linked content at the electronic source link is consistent with a version of a document originally accessed on which the curated item is based (item document). In response to the linked content not being consistent with the item document, the method includes locating an alternative item or an alternative source for an inconsistent source link. In response to the electronic source link being broken, the method includes locating an alternative item or an alternative source for a broken source link. Following an expiration date of the curated item, the method also includes locating updated content that is relevant to the curated item.