CITIZEN WATCH CO., LTD.

A machine tool has a spindle configured to rotatably grip a workpiece, a turret configured to mount a tool for processing the workpieces, a movable body configured to move independently from the spindle and the turret, a contact type sensor configured to move in accordance with a movement of the movable body, and a controller configured to calculate center position information indicating a center position of the spindle based on spindle position information acquired via the sensor moved to the vicinity of the workpiece by moving the movable body, wherein the controller acquires cutting edge position information indicating a position of a cutting edge of the tool via the sensor by moving the movable body, and corrects the cutting edge position information based on the center position information.

A user terminal includes an actual image obtaining unit that obtains an actual image in which an electronic timepiece is displayed, a model determining unit that specifying information about the electronic timepiece based on the actual image, an information display unit that displays information about the electronic timepiece. The model determining unit determines whether the actual image is influenced by external light based on the actual image, where the influence of the external light occurs when the actual image is obtained and inhibits identification of the information about the electronic timepiece.

A machine tool includes a spindle that is placed on a bed and grips a workpiece, a first slide mechanism including a first rail that is fixed to the bed and extends in a first direction intersecting a spindle direction in which the spindle extends and a first table that is slidable along the first rail, a second slide mechanism including a second rail that is provided on the first table of the first slide mechanism and extends in a second direction intersecting the spindle direction and the first direction and a second table that is slidable along the second rail, a tool post that is placed on the second table of the second slide mechanism and holds a tool for machining the workpiece, a cover that covers the spindle, the first slide mechanism, the second slide mechanism and the tool post, and a controller.

A magnetic sensor head includes an optical fiber, a GI fiber having one end optically connected to the optical fiber, a magnetic film joined to the other end of the GI fiber, and a reflective film joined to a surface of the magnetic film opposite a surface joined to the GI fiber. The magnetic film is formed of a rare-earth iron garnet film. The slope of the sum of squared differences of the rare-earth iron garnet film with respect to an applied magnetic field is 100 or greater.

A workpiece loading and unloading device includes a placement portion including two pallets, which store a plurality of workpieces, a pallet movement portion that moves the pallet in the placement portion, an arm that moves relative to an automatic lathe, a hand that transfers the workpiece between the pallet and the automatic lathe, and a controller, wherein the controller controls the arm to move within a combined range of a first range S 1 and a second range S 2 , in the first range, the hand reaches all of an area of the first pallet and in the second range S 2 , the hand reaches only some of an area of the second pallet, and controls the pallet movement portion, such that the first pallet is unladed, and the second pallet moves to the first position P 1 while the arm separates from the second pallet.

A paper creasing device includes a receiving member including a groove extending in a fixed direction; a rotary blade movable along the groove; and a movement mechanism for moving the rotary blade along the groove at a fixed height in a range between first and second edges of paper in a width direction, the paper being placed on an upper surface of the receiving member. The receiving member is formed to have shearing forces applied to the paper sandwiched between the rotary blade and the groove in an outside range and an inside range in the width direction of the receiving member, the outside range corresponding to at least one of the paper edges located on a side where the rotary blade starts contacting the paper when moving along the groove, and the shearing force in the outside range being smaller than the shearing force in the inside range.

A light-emitting device includes a substrate, power supply terminals on the substrate, first light-emitting elements and second light-emitting elements configured to emit light by supplying electric power between the power supply terminals, and a light exit surface configured to allow exit of light emitted from these light-emitting elements. The light exit surface includes a first light exit region being a plane region, and second light exit regions being a plane region not including the first light exit region. A light-emitting element group has a first light-emitting element group configured with a plurality of first light-emitting elements in the first light exit region, and a second light-emitting element group configured with a plurality of second light-emitting elements in the second light exit region. An average luminance of light exited from the first light exit region is higher than that from the second light exit region.