Abstract: An optical fiber according to an embodiment has a structure capable of reducing an increase in transmission loss. The optical fiber includes a glass part extending in a direction of a central axis, and the glass part is comprised of silica-based glass, includes a core and a cladding, and has residual stress approximately uniform throughout a cross section of the glass part orthogonal to the central axis, the core having the central axis and being doped with chlorine with a mass fraction of 1% or more, the cladding surrounding the core and having a refractive index lower than a maximum refractive index of the core.

Abstract: An optical fiber includes a core, an inner cladding surrounding the core, and an outer cladding surrounding the inner cladding. A mean relative refractive index difference ?1 of the core, a mean relative refractive index difference ?2 of the inner cladding, and a mean relative refractive index difference ?3 of the outer cladding satisfy a relationship of ?1>?3??2. A ratio r2/r1 of an inner cladding radius r2 to a core radius r1 is 4.5 or higher and 5.5 or lower. A minimum value ?min of a relative refractive index difference is ?0.030% or higher and ?0.010% or lower. A radius rmin at which the relative refractive index difference is the minimum value ?min satisfies a relationship of r1<rmin<r2. (?min??(r1))/(rmin?r1) is ?0.002%/?m or lower, where ?(r1) denotes the relative refractive index difference with the core radius r1.

Abstract: A self-checkout apparatus of an embodiment has: a display unit that displays information to inform an operator; a reading unit that is positioned in a lateral side of the display unit and receives input of information of a product by reading a code symbol; and a housing base that is positioned below the display unit, the housing base for placing the product after information reception by the reading unit and for placing a housing tool for housing the product; wherein the reading unit is positioned between the display unit and the housing base in a height direction.

Abstract: The present disclosure relates to an optical fiber having a structure that has a low transmission loss and can be produced with high productivity. An optical fiber according to an embodiment includes a core and a cladding. The core is comprised of silica glass to which bromine is added, and the cladding has a refractive index lower than a maximum refractive index of the core. The core has compressive stress.

Abstract: A surgical treatment instrument includes an elongated member an end effector that is bendable with respect to the elongated member, a bending operator operable to bend the end effector, a rotor rotatable about a rotation axis in response to operation of the bending operator, and a transmitter that transmits a driving force to bend the end effector. The bending operator, the rotor, and the transmitter are rotatable about the longitudinal axis together with the elongated member and the end effector.

Abstract: A treatment tool includes: a sheath; a treatment portion that is capable of treating a living tissue and is provided at a distal end of the sheath; a first driver and a second driver that are inserted in the sheath and are capable of driving the treatment portion; and a holder that is inserted in the sheath, and holds the first driver and the second driver. The holder includes a groove in which the first and second driver are inserted, and an intervening portion provided in the groove and arranged between the first driver and the second driver in a cross section perpendicular to a longitudinal direction of the groove that extends from a distal end to a proximal end of the holder.

Abstract: A product reading device of an embodiment that reads a code symbol attached to a product, the product reading device includes a first reading unit that forms a reading region, in which the code symbol can be read, on a side where an operator is located; a second reading unit that is provided at a position different from that of the first reading unit, and forms the reading region on the side where the operator is located; and a controller that reads code information held in the code symbol from a reading result of the first reading unit or the second reading unit, wherein the reading region of the first reading unit and the reading region of the second reading unit at least partially overlap.

Abstract: A power conversion device and a press apparatus capable of preventing an excessive current in a DC-link capacitor are provided. The power conversion device 10 includes a voltage-doubling rectifier circuit 12. In the voltage-doubling rectifier circuit 12, in a voltage-doubling rectification mode, a common connection node Nc between two capacitors 102a and 102b is connected to a predetermined node. A current detector circuit 107 detects a switching current (IL) flowing in the switching elements SW1 and SW2, and a current detector circuit 108 detects a load current Ild of a load 15. In a mode switching period from a full-wave rectification mode to a voltage-doubling rectification mode, a controller circuit 110 controls the switching of the switching elements SW1 and SW2, based on the switching current (IL) and the load current Ild.

Abstract: A reading device according to an embodiment includes a scanner configured to read code information indicated by a code symbol, a holder configured to detachably hold the scanner, a detecting unit configured to detect a first state in which the scanner is held by the holder and a second state in which the scanner is detached from the holder, and a setting-condition changing unit configured to, if the detecting unit detects the second state, set setting conditions relating to the reading by the scanner such that a reading distance of the scanner is shorter than the reading distance in the first state.

Abstract: There is provided an imaging device including: a signal processing unit configured to cause a series of picture data being continuously acquired to be temporarily stored in a buffer memory area in a signal processing process, read out the series of picture data from the buffer memory area, and perform a subsequent signal processing; and a control unit configured to perform control for deleting at least a part of the picture data stored in the buffer memory area, on a basis of detecting a predetermined operation while the signal processing is being performed on the series of picture data by the signal processing unit.

Abstract: A treatment tool includes: a sheath extending along a longitudinal axis; a fixed gripping piece protruding from a distal end of the sheath; a movable gripping piece that is movably attached to either the sheath or the fixed gripping piece, the movable gripping piece being configured to grip a living tissue between the movable gripping piece and the fixed gripping piece; and a movement restricting portion configured to allow movement of the movable gripping piece in a first range and restrict movement of the movable gripping piece in a second range different from the first range. The movable gripping piece is attachable to and detachable from either the sheath or the fixed gripping piece at a movement position within the second range.

Abstract: A treatment system includes a treatment tool and a generator. The treatment tool includes a first grasper configured to apply treatment energy to a living tissue, and a second grasper. The generator includes a power circuit, a detecting circuit configured to detect an index value indicating a treatment state of a test material, and a processor configured to, based on the index value, measure a treatment completion time. At least one of the treatment tool and the generator further includes a memory configured to store property data which indicates a property of the test material, and based on the measured treatment completion time, the intensity of the treatment energy applied to the test material, and the property data, the processor is configured to calculate a control parameter related to the intensity of the treatment energy when the living tissue is treated, and output the control parameter to the power circuit.

Abstract: A checkout device according to an embodiment includes a bill discharge port and a coin discharge port. The bill discharge port is disposed in a left side upper part of a front surface of a housing and discharges bills. The coin discharge port is disposed below the bill discharge port and discharges coins.

Abstract: According to one embodiment, a commodity sales data processing device includes a commodity registration unit, a payment processing unit, a detection control unit, a measurement control unit, and a fraud detection unit. The commodity registration unit registers commodities. The payment processing unit settles the price for registered commodities. The detection control unit detects the presence or absence of an operator. The measurement control unit measures the weight applied to the bag packing stand on which the registered commodities are placed. The fraud detection unit detects the movement of an unsettled commodity to the bag packing stand according to detection of a weight change of the weight applied to the bag packing stand after settlement is completed and if the operator is detected.

Abstract: A self-service commodity sales data processing device that includes a take-out determination unit for determining whether commodities were taken out simultaneously based on an image of a commodity taken out, a first identical termination unit for determining whether taken-out commodities are different commodities or identical commodities if the take-out determination unit determines that the commodities are taken out simultaneously, a reading unit for reading information of the taken-out commodities, a second identical determination unit for determining whether the commodities read by the reading unit are the identical commodity if the first identical determination unit determines that the taken-out commodities are different commodities, and a suspension unit for suspending the transaction if the second identical determination unit determines that the commodities are the identical commodity.

Abstract: A settlement device according to an embodiment includes a reading unit configured to read a purchase target commodity, a settling unit configured to perform settlement processing for the commodity for one transaction read by the reading unit, a placing region where an article can be placed, an imaging unit configured to image the placing region, and an informing unit configured to compare, among images acquired by the imaging unit, a first image before the reading of the commodity for the one transaction and a second image at a completion time of the settlement processing and inform if both the images are different.

Abstract: A merchandise registration apparatus includes: a first reading unit to form a first reading area in which a code symbol attached to merchandise can be read; a second reading unit provided at a location different from that of the first reading unit, and to form a second reading area overlapping with at least a part of the first reading area, in which the code symbol can be read; a first acquisition unit to acquire first code information; a second acquisition unit to acquire second code information; and a registration unit to register the merchandise based on the first code information and the second code information, if the first code information and the second code information match each other.

Abstract: A self-checkout system includes a commodity registration apparatus and a management server. The commodity registration apparatus includes a first storage device and a first processor. The first processor acquires an image of a customer at commodity registration apparatus and information related to commodity registration. The first processor detects possible fraud event based on the image and the registration information. Fraud points corresponding to the possible fraud are output to the management server in conjunction with customer identification information. The management server includes a second storage device and a second processor. The second processor accumulates the received fraud points in association with the customer identification information and stores accumulated total points for each customer in the second storage device.

Abstract: A self-service point-of-sale (POS) terminal for a customer to register a commodity to be purchased in a store, includes an input device, a reading device configured to read a symbol on a commodity, a network interface configured to receive, from an external device operated by a store clerk or the like, instruction information that instructs output of caution information, and a processor. The processor is configured to acquire commodity information about a commodity based on the symbol read by the reading device and register the commodity using the commodity information. Upon receipt of an input of completion of registration via the input device, the processor determines whether to proceed to payment processing for the registered commodity based on whether the instruction information has been received from the external device.

Abstract: A merchandise registration device includes a lamp, a reading device reading a symbol on an item and providing identification information for the item, a weight sensor in a table on which a scanned item can be placed, and a processor. The processor performing a registration operation including acquiring identification information for the item and comparing an expected weight of the item to a measured weight from the weight sensor. The processor controlling the lamp to indicate progress states in the registration operation and whether the reading device is ready for reading a symbol for a next item in a sales transaction.