Abstract: A rare earth-doped core optical fiber of the present invention includes a core comprising a silica glass containing at least aluminum and ytterbium, and a clad provided around the core and comprising a silica glass having a lower refraction index than that of the core, wherein the core has an aluminum concentration of 2% by mass or more, and ytterbium is doped into the core at such a concentration that the absorption band which appears around a wavelength of 976 nm in the absorption band by ytterbium contained in the core shows a peak absorption coefficient of 800 dB/m or less.

Abstract: A polylactic acid-based resin composition comprising: 50-90 mass % of a polylactic acid-based resin (A); and 10-50 mass % of a polyolefin-based resin (B), heat quantity of crystallization of the polyolefin-based resin (B) being 40 J/g or less as measured by using differential scanning calorimeter as measured at a thermal process comprising the steps of: heating up to 200° C. at a heating rate of 10° C./min; keeping the temperature at 200° C. for 5 minutes; and cooling down to the room temperature at a cooling rate of 10° C./min. The invention also provides: The composition may be applied, for example, to produce a polylactic acid-based film, a molded product using the film, an elongated film, a heat-shrinkable label, and a container having the heat-shrinkable label.

Abstract: A developing device includes: a container that contains a developer including toner; a partition that forms a plurality of chambers by partitioning an interior space of the container; an agitation mechanism that agitates the developer in the interior space and moves the developer between the plurality of chambers; a transport section that is supplied with the developer from the container, and transports the developer to a surface of an image carrier that carries an electrostatic latent image such that the transported developer is close to or contacts the surface of the image carrier, thereby developing the electrostatic latent image; and a driving mechanism that moves at least the partition.

Abstract: Disclosed is an aqueous ink for inkjet that contains water, pigment, organic or inorganic acid (A) and ammonia or amines (B) or ammonium salts of organic or inorganic acids, a resin having anionic groups (C), and an amphoteric resin having both anionic and cationic groups (D). The aqueous ink for inkjet is characterized by fulfilling the relationship pKa(A)<pKa(C)<7 when pKa(A) is the pKa of the organic or inorganic acid (A) and pKa(C) is the pKa of said resin having anionic groups (C). By means of the aqueous ink for inkjet and the inkjet recording method, the occurrence of bleeding during high-speed printing can be reduced, and a high detail image quality can be obtained.

Abstract: A discharge device includes: a discharge unit that discharges a recording medium in a discharge direction; and a forming unit arranged downstream of the discharge unit and adapted to form an oblique corrugation with respect to the discharge direction on the recording medium.

Abstract: A toner that when the complex elastic modulus measured at an angular frequency of 6.28 rad/sec., and a strain amount of 0.3% is 1×106 Pa or more and 1×108 Pa or less, the tangent loss is 0.5 or more and 1.8 or less.

Abstract: A rare earth-doped core optical fiber of the present invention includes a core comprising a silica glass containing at least aluminum and ytterbium, and a clad provided around the core and comprising a silica glass having a lower refraction index than that of the core, wherein the core has an aluminum concentration of 2% by mass or more, and ytterbium is doped into the core at such a concentration that the absorption band which appears around a wavelength of 976 nm in the absorption band by ytterbium contained in the core shows a peak absorption coefficient of 800 dB/m or less.

Abstract: Provided are an aqueous ink-jet ink and a method for forming an ink-jet image enabling to decrease bleed occurrence during high-speed printing and to realize highly detailed image quality. An aqueous ink-jet ink characterized by containing water, a pigment, an organic or inorganic amine salt, and a water-soluble resin having a higher pKa than an acid component formed by dissociation of the amine salt in an ink.

Abstract: Disclosed is a method for forming an image with an ink-jet recoding method which forms the image on a coated printing paper by employing an ink containing water in an amount of 20 to 90 weight based on the total weight of the ink, a pigment and a resin, the method containing the sequential steps of: applying an aqueous processing solution on the coated printing paper; drying the aqueous processing solution applied on the coated printing paper; and ejecting droplets of the ink on the coated printing paper, wherein the aqueous processing solution is capable of aggregating the ink or increasing a viscosity of the ink, and the coated printing paper is heated from 40 to 60° C. during the step of ejecting the droplets of the ink.

Abstract: A polylactic acid-based resin composition comprising: 50-90 mass % of a polylactic acid-based resin (A); and 10-50 mass % of a polyolefin-based resin (B), heat quantity of crystallization of the polyolefin-based resin (B) being 40 J/g or less as measured by using differential scanning calorimeter as measured at a thermal process comprising the steps of: heating up to 200° C. at a heating rate of 10° C./min; keeping the temperature at 200° C. for 5 minutes; and cooling down to the room temperature at a cooling rate of 10° C./min. The invention also provides: The composition may be applied, for example, to produce a polylactic acid-based film, a molded product using the film, an elongated film, a heat-shrinkable label, and a container having the heat-shrinkable label.

Abstract: An image forming apparatus includes: a main body; a sheet transporting unit provided to a side portion of the main body; and a noise source provided inside of the main body with a rotation portion, wherein the sheet transporting unit includes a plate having a plurality of holes, and an opposing member having a surface opposing the plate, and wherein the noise source, the plate, and the opposing member are disposed in the stated order from inside of the main body to outside of the main body.

Abstract: Provided is a method for forming an image using an ink-jet recording method which forms the image with a single pass printing method employing an ink comprising water in an amount of 20 to 90 weight % based on the total weight of the ink, a pigment and a water soluble resin containing an acidic group which is neutralized with ammonia or an amine compound, the method containing the steps of: applying a processing solution on a coated paper for printing; and ejecting droplets of the ink on the coated paper for printing, wherein the processing solution is capable of aggregating an ingredient of the ink or increasing a viscosity of the ink, and the coated paper for printing is heated from 40 to 60° C. during the step of ejecting the droplets of the ink.

Abstract: An optical fiber that includes a core containing a first concentration of germanium, an inner cladding arranged on the core, the inner cladding containing a second concentration of germanium and having a first diffusion coefficient, and an outer cladding arranged on the inner cladding, the outer cladding having a second diffusion coefficient, where the first diffusion coefficient is larger than the second diffusion coefficient, and where the first concentration of germanium is about 200% or more of the second concentration of germanium. An optical fiber constructed in this manner can be spliced with an optical fiber having a different MFD, such as a single-mode optical fiber or an erbium-doped optical fiber, with low splice loss and a sufficient splicing strength.

Abstract: A rare earth-doped core optical fiber includes a core comprising a silica glass containing at least aluminum and ytterbium, a clad provided around the core and comprising a silica glass having a lower refraction index than that of the core, and a polymer layer provided on the outer circumference of the clad and having a lower refractive index than that of the clad, wherein aluminum and ytterbium are doped into the core such that a loss increase by photodarkening, TPD, satisfies the following inequality (A). By this rare earth-doped core optical fiber, it is possible to manufacture an optical fiber laser capable of maintaining a sufficient laser oscillation output even when used for a long period of time. TPD?10{?0.655*(DAl)?4.304*exp{?0.00343*(AYb)}+1.

Abstract: A rare earth-doped core optical fiber of the present invention includes a core comprising a silica glass containing at least aluminum and ytterbium, and a clad provided around the core and comprising a silica glass having a lower refraction index than that of the core, wherein the core has an aluminum concentration of 2% by mass or more, and ytterbium is doped into the core at such a concentration that the light absorption band which appears around a wavelength of 976 nm in the light absorption band by ytterbium contained in the core shows a peak light absorption rate of 800 dB/m or less.

Abstract: A developing device includes: a container that contains a developer including toner; a partition that forms a plurality of chambers by partitioning an interior space of the container; an agitation mechanism that agitates the developer in the interior space and moves the developer between the plurality of chambers; a transport section that is supplied with the developer from the container, and transports the developer to a surface of an image carrier that carries an electrostatic latent image such that the transported developer is close to or contacts the surface of the image carrier, thereby developing the electrostatic latent image; and a driving mechanism that moves at least the partition.

Abstract: A discharge device includes: a discharge unit that discharges a recording medium in a discharge direction; and a forming unit arranged downstream of the discharge unit and adapted to form an oblique corrugation with respect to the discharge direction on the recording medium.

Abstract: A higher order mode dispersion compensating fiber includes an optical fiber and a first loss layer which is provided within the fiber and which attenuates a lower order mode propagating through the optical fiber while not attenuating a higher order mode which is higher than the lower order mode. A dispersion compensating fiber mode converter for a higher order fiber includes a single mode fiber; a higher order mode dispersion compensating fiber; and a fused and extended portion which has been formed by fusing and extending the single mode fiber and the higher order mode fiber. The fused and extended portion converts between the LP01 mode of the single mode fiber and the LP02 mode of the higher order mode dispersion compensating fiber.

Abstract: An optical fiber that includes a core containing a first concentration of germanium, an inner cladding arranged on the core, the inner cladding containing a second concentration of germanium and having a first diffusion coefficient, and an outer cladding arranged on the inner cladding, the outer cladding having a second diffusion coefficient, where the first diffusion coefficient is larger than the second diffusion coefficient, and where the first concentration of germanium is about 200% or more of the second concentration of germanium. An optical fiber constructed in this manner can be spliced with an optical fiber having a different MFD, such as a single-mode optical fiber or an erbium-doped optical fiber, with low splice loss and a sufficient splicing strength.

Abstract: A toner that when the complex elastic modulus measured at an angular frequency of 6.28 rad/sec., and a strain amount of 0.3% is 1×106 Pa or more and 1×108 Pa or less, the tangent loss is 0.5 or more and 1.8 or less.