Abstract: An electric field imaging device is provided with which it is possible to visualize as a dynamic state an electromagnetic field intensity distribution and a phase delay/advance distribution in the vicinity of a product, using a sample of the actual product without lead-out lines. The electric field imaging device includes: an antenna which accepts a high-frequency signal emitted by the sample as an input; an electrooptic (EO) crystal plate which is a frequency fRF high-frequency electric field sensor; a flashing light source which radiates polarized light onto the EO crystal plate; an optical system leading to an analyzer for detecting phase changes in polarized light obtained by means of the EO crystal plate; an image capturing device which converts an in-plane distribution of optical beam from the analyzer into an electrical signal; and an information processing device which processes and displays an output signal from the image capturing device.

Abstract: Stabilized lithium powder according to an embodiment of this disclosure includes lithium particles. Each lithium particle includes an inorganic compound on a surface thereof, the inorganic compound contains lithium hydroxide, and the lithium hydroxide is contained by 2.0 wt% or less relative to the entire stabilized lithium powder.

Abstract: The present invention provides an electret sheet that retains high piezoelectricity under high-temperature condition. The electret sheet of the invention is characterized by including a charged porous sheet, in which the electret sheet has a volume resistivity of 1.0×1015 ??cm or more at 25° C. and a dielectric breakdown voltage of 7 kV or more at 25° C. The electret sheet preferably having a volume resistivity of 1.0×1014 ??cm or more at 37° C. and a dielectric breakdown voltage of 7 kV or more at 37° C. retains excellent piezoelectricity even after being left under a high-temperature atmosphere over a long period.

Abstract: An electromagnetic field imaging device according to one aspect of the present disclosure includes a polarizing optical member arranged to face an imaging subject. A modulated light from a laser light source is influenced by an electric field from the imaging subject in the polarizing optical member. The modulated light subjected to the influence of the electric field is imaged as a detection light. The polarizing optical member is supported in a state of being movable in a direction of a plate thickness of the polarizing optical member. The plate thickness of the polarizing optical member is no larger than 1.2 times a minimum void interval of a wiring of the imaging subject.

Abstract: The present invention provides an electret sheet that exhibits excellent piezoelectricity even by light stress. The electret sheet of the invention is characterized by including a charged porous sheet, in which the electret sheet has a compressive elastic modulus of 80 to 300 MPa when compressively deformed at 25° C. and a 50% compression stress of 120 to 300 kPa at 25° C., and thus has the excellent piezoelectricity for light stress and exhibits the excellent piezoelectricity even by light stress (0.5 N or less) caused by a pulse wave or a breathing.

Abstract: A printer includes: a holding member configured to hold a roll of paper; an elastic member configured to support the holding member so that the holding member is slidable in a vertical direction; a first detection unit configured to detect a position of the holding member; and a second detection unit that detects a near-end of the roll of paper based on a detection result by the first detection unit.

Abstract: To minimize or prevent obstruction by a surface-mounted part or disturbance to an object to be visually observed, an electric field sensor is placed at a predetermined distance from a surface of the object to be visually observed, and a two-dimensional distribution of a high-frequency electric field is detected. Considering that the measured electric field distribution is due to an electrostatic field from the electric field distribution at the surface of the visually observed object, the electric field distribution at the surface is back-calculated from Gauss' flux theorem or the like, and the obtained electric field distribution is displayed or outputted. Thus, the electric field distribution at a position closer to the surface of the visually observed object is imaged while obstruction by a surface-mounted part or disturbance to the visually observed object is suppressed.

Abstract: A printer for printing information on a recording medium includes a guide that guides the recording medium being fed and includes multiple holes, a sensor for detecting the recording medium, and a board that includes multiple terminals. The sensor is mounted on at least one of the terminals such that the sensor is exposed through one of the holes.

Abstract: A positive electrode active material for a lithium ion secondary battery is lithium vanadium phosphate represented by a following composition expression (1) and in which a peak intensity ((002)int/(201)int) of a (002) plane normalized with respect to a peak intensity of a (201) plane and a peak intensity ((102)int/(201)int) of a (102) plane normalized with respect to a peak intensity of the (201) plane in an X-ray diffraction pattern satisfy 0.35?(002)int/(201)int?0.53 and 0.46?(102)int/(201)int?0.63, respectively, LixVOPO4??(1).

Abstract: A printer includes a printer body (110) including a recording-paper holder (111) that holds rolled recording paper (100) and includes a holder guide (112) for guiding the recording paper (100), a platen roller (140), a print head (130) attached to the printer body (110), and a lower guide (160) that is disposed to face the holder guide (112) such that a conveying path for guiding the recording paper (100) is formed between the lower guide (160) and the holder guide (112).

Abstract: A printer includes a print head; a platen roller; a frame, to which the print head or the platen roller is attached, that includes a frame body, a sidewall that is perpendicularly bent from the frame body with respect to a longitudinal direction of the platen roller, and a back surface member that is bent from the frame body in parallel to the longitudinal direction of the platen roller, the back surface member including an end portion and a support portion provided to support the sidewall from an inner side and an outer side of the sidewall, respectively, the sidewall being supported by the back surface member while being interposed between the end portion the support portion of the back surface member.

Abstract: A printer includes a print head and a platen roller. The platen roller includes multiple bearings provided one at each longitudinal end of the platen roller, a roller positioned between the bearings, and multiple flanges of which one is positioned between the roller and one of the bearings and the other is positioned between the roller and the other of the bearings in the longitudinal direction of the platen roller. The flanges have a diameter greater than the diameter of the bearings and the diameter of the roller.

Abstract: A printer includes a printer body including a holder configured to house rolled recording paper, a cover configured to open and close the holder, a coupling mechanism that couples the cover to the printer body, and a detachment preventing mechanism configured to prevent the cover from being detached from the printer body. The coupling mechanism includes shafts formed on one of side plates of the cover and inner walls of the printer body, and shaft holes formed in another one of the side plates and the inner walls and configured to receive the shafts; and the detachment preventing mechanism includes a stopper that is disposed such that ends of the stopper contact inner surfaces of the side plates and configured to support the side plates and prevent the side plates from falling when a load is applied to the cover.

Abstract: A soldering flux includes a base resin, an activator, and a solvent. The activator contains an acrylic resin having an acid value of not more than 50 mg KOH/g and represented by a general formula (1). A monomer weight ratio of a, b, and c is b/(a+b+c)?0.6, at least one of a and c may be 0, R1 is an alkyl group having a carbon number of 8 to 24, R2 is a substituent other than the R1 and may be one of substituents including a hydrogen atom, a methyl group, an alkyl group, an aryl group, and a hydroxyl group or a combination of a plurality of substituents, and R3, R4, and R5 are hydrogen atoms or methyl groups. The solvent contains a compound having a carboxyl group in a cyclohexyl skeleton and represented by a general formula (2).

Abstract: A printer includes a body, a lid, a hook, and an engaging part. The body includes a holder configured to accommodate recording paper. The lid is attached to the body to be opened and closed relative to the body. The hook is attached to one of the body and the lid. The engaging part is attached to the other of the body and the lid. The engaging part is accommodated in a recess formed in the hook when the lid is closed relative to the body.

Abstract: A printer apparatus includes a print head, a platen roller, a recording paper guide configured to guide recording paper placed between the print head and the platen roller, and a spring configured to press the print head toward a direction of the platen roller, wherein the spring has a first part and a second part, the first part being in contact with the recording paper guide, the second part having a head contact at an end thereof that is in contact with the print head, the spring exerting a restoring force in such a direction as to narrow a space between the first part and the second part.

Abstract: A printer apparatus includes a printer main body having a platen roller and a print head to print on recording paper, a cutter unit configured to cut the recording paper, and a presenter unit connected to the cutter unit, wherein the recording paper on which the print head has printed enters the presenter unit through the cutter unit, and comes out from a discharge slot of the presenter unit, wherein the presenter unit includes a first roller and a second roller configured to convey the recording paper placed therebetween, and a flapper disposed along a transportation path of the recording paper between the cutter unit and both the first roller and the second roller, and configured to be flipped open to an outside of the presenter unit to expose the transportation path, wherein an angle at which the flapper is open is selectively set to one of a plurality of different angles.

Abstract: A printer includes a holder configured to house rolled recording paper, a cover that is attached to the holder to be openable and closable relative to the holder, and a contact part that is attached to the cover and configured to contact the recording paper. The contact part is configured such that the contact part substantially point-contacts the recording paper, and positions on the contact part contacting the recording paper change as the recording paper is unrolled.

Abstract: To minimize or prevent obstruction by a surface-mounted part or disturbance to an object to be visually observed, an electric field sensor is placed at a predetermined distance from a surface of the object to be visually observed, and a two-dimensional distribution of a high-frequency electric field is detected. Considering that the measured electric field distribution is due to an electrostatic field from the electric field distribution at the surface of the visually observed object, the electric field distribution at the surface is back-calculated from Gauss' flux theorem or the like, and the obtained electric field distribution is displayed or outputted. Thus, the electric field distribution at a position closer to the surface of the visually observed object is imaged while obstruction by a surface-mounted part or disturbance to the visually observed object is suppressed.

Abstract: A printer includes a recording head; a platen roller; a first case to which the recording head is attached, the first case including a paper-feed port for feeding recording paper; a second case to which the platen roller is attached, the second case including a paper-ejection port for ejecting the recording paper; and a lock lever that is disposed in the first case and includes a support configured to rotatably support a shaft of the platen roller. The printer is configured such that the shaft of the platen roller is placed in the support when the first case and the second case are joined together.