Abstract: An electrostatic charge image developing toner has toner particles that contain a binder resin, a release agent, and resin particles, in which a loss coefficient tan ? (1%) of the resin particles at a melting temperature Tw of the release agent and a strain of 1% and a loss coefficient tan ? (100%) of the resin particles at the melting temperature Tw of the release agent and a strain of 100% satisfy the following Expression (1) and the following Expression (2). 0.02?tan ?(1%)?0.5??Expression (1): 0.4?tan ?(100%)?tan ?(1%)?2.

Abstract: An electrostatic charge image developing toner contains toner particles that contain a binder resin and resin particles and an external additive that contains inorganic particles, in which a loss coefficient tan?a of the resin particles at 40° C. and 0.1 rad/s satisfies 0.1 < tan?a < 1.0, a loss coefficient tan?b of the resin particles at 40° C. and 10 rad/s satisfies 1.3 < tan?b < 3.0, and in a case where a strain of 0.005% is applied to the toner at 40° C., a stress relaxation time ? of the toner satisfies 5 seconds < ? < 500 seconds.

Abstract: An electrostatic charge image developing toner that has a binder resin that contains a crystalline resin and toner particles that contain resin particles, in which a loss coefficient tan ?S (30) at 30° C. of the resin particles is 1 or more, and a loss coefficient tan ?S (50) at 50° C. of the resin particles is less than 1.

Abstract: A method of producing resin particles includes a first step of adding a monomer-containing emulsified liquid that contains a polymerizable monomer and an aqueous medium to an aqueous mother medium to polymerize the polymerizable monomer; and a second step of adding an aqueous medium for cooling to the aqueous mother medium after completion of the addition of the monomer-containing emulsified liquid to the aqueous mother medium.

Abstract: A pressure sensor 1 according to the first aspect of the invention includes: a substrate 50; and a functional element 40 which is laid on the substrate 50 and is composed of functional titanium oxide including crystal grains of at least one of ?-phase trititanium pentoxide (?-Ti3O5) and ?-phase trititanium pentoxide (?-Ti3O5) and having the property that at least a portion of crystal grains of at least one of ?-phase trititanium pentoxide (?-Ti3O5) and ?-phase trititanium pentoxide (?-Ti3O5) change into crystal grains of titanium dioxide (TiO2) when the functional titanium oxide is heated to 350° C. or higher. The substrate 50 includes a substrate thin-film section 51 having a thin film form in which the thickness in the stacking direction of the substrate 50 and the functional element 40 is smaller than that in the other directions.

Abstract: A functional element includes functional titanium oxide. The functional titanium oxide includes crystal grains of one or more of ?-phase trititanium pentoxide (?-Ti3O5) and ?-phase trititanium pentoxide (?-Ti3O5). The functional titanium oxide includes the property that at least a portion of crystal grains of one or more of ?-phase trititanium pentoxide (?-Ti3O5) and ?-phase trititanium pentoxide (?-Ti3O5) changes into crystal grains of titanium oxide (TiO2) when the functional titanium oxide is heated to 350° C. or higher.

Abstract: A toner for electrostatic image development includes: a binder resin; and a coloring agent. When an image with a toner mass per unit area of 4.0 g/m2 is formed using the toner, the image has a color that satisfies the following conditions (A), (B), and (C): (A) L* is from 37 to 50 inclusive; (B) is from ?12 to 8 inclusive; and (C) b* is from ?49 to ?40 inclusive.

Abstract: A toner for electrostatic image development includes: a binder resin; and a coloring agent. When an image with a toner mass per unit area of 4.0 g/m2 is formed using the toner, the image has a color that satisfies the following conditions (A), (B), and (C): (A) L* is from 37 to 50 inclusive; (B) a* is from ?12 to 8 inclusive; and (C) b* is from ?49 to ?40 inclusive.

Abstract: A time-dependent element of the present invention includes a time-dependent phase transition material that undergoes solid-solid phase transition developing with time after production irrespective of the presence of an external stimulus, in which one or more physical properties of the time-dependent element selected from a group consisting of composition, volume, transmittance, reflectance, electric resistance, and magnetic property change with time. A physical property temporal change prediction device includes a physical property temporal change prediction device body having the time-dependent element and is configured to predict a temporal change in one or more physical properties selected from a group consisting of composition, volume, transmittance, reflectance, electric resistance, and magnetic property.

Abstract: A white toner for electrostatic image development includes white toner particles containing a binder resin and a white pigment. When in a circularity distribution of the white pigment determined by sectional observation of the white toner particles, the cumulative 10% circularity from the smaller side is C10, and the cumulative 50% circularity is C50, the following formula (1) and formula (2) are satisfied. 0.900?C50?1.000??Formula (1): 1.00?C50/C10?1.

Abstract: An electrostatic charge image developing toner includes: a toner particle and a strontium titanate particle that is externally added to the toner particle, in which an average primary particle diameter of the strontium titanate particle that is present on a surface of the toner particle is 30 nm or more and 100 nm or less, and average primary particle circularity is 0.82 or more and 0.94 or less, and in which circularity that becomes 84% of accumulation of the primary particle is greater than 0.92.

Abstract: a pressure sensor 1 according to the first aspect of the invention includes: a substrate 50; and a functional element 40 which is laid on the substrate 50 and is composed of functional titanium oxide including crystal grains of at least one of ?-phase trititanium pentoxide (?-Ti3O5) and ?-phase trititanium pentoxide (?-Ti3O5) and having the property that at least a portion of crystal grains of at least one of ?-phase trititanium pentoxide (?-Ti3O5) and ?-phase trititanium pentoxide (?-Ti3O5) change into crystal grains of titanium dioxide (TiO2) when the functional titanium oxide is heated to 350° C. or higher. The substrate 50 includes a substrate thin-film section 51 having a thin film form in which the thickness in the stacking direction of the substrate 50 and the functional element 40 is smaller than that in the other directions.

Abstract: A white toner for electrostatic image development includes white toner particles containing a binder resin and a white pigment. When in a circularity distribution of the white pigment determined by sectional observation of the white toner particles, the cumulative 10% circularity from the smaller side is C10, and the cumulative 50% circularity is C50, the following formula (1) and formula (2) are satisfied. 0.900?C50?1.000 ??Formula (1) 1.00?C50/C10?1.

Abstract: A functional element includes functional titanium oxide. The functional titanium oxide includes crystal grains of one or more of ?-phase trititanium pentoxide (?-Ti3O5) and ?-phase trititanium pentoxide (?-Ti3O5). The functional titanium oxide includes the property that at least a portion of crystal grains of one or more of ?-phase trititanium pentoxide (?-Ti3O5) and ?-phase trititanium pentoxide (?-Ti3O5) changes into crystal grains of titanium oxide (TiO2) when the functional titanium oxide is heated to 350° C. or higher.

Abstract: An electrostatic charge image developing toner includes: a toner particle and a strontium titanate particle that is externally added to the toner particle, in which an average primary particle diameter of the strontium titanate particle that is present on a surface of the toner particle is 30 nm or more and 100 nm or less, and average primary particle circularity is 0.82 or more and 0.94 or less, and in which circularity that becomes 84% of accumulation of the primary particle is greater than 0.92.

Abstract: There is provided an electrostatic image-developing toner containing a binder resin, a coloring agent and a release agent having a melting temperature of 85° C. to 120° C., the toner having a sea-island structure involving a sea part containing the binder resin and an island part containing the release agent, wherein a mode value of the distribution of the eccentricity degree B of the release agent-containing island part, represented by the specific formula, is from 0.75 to 1.00 and a skewness of the distribution of the eccentricity degree B is from ?1.30 to ?0.50.

Abstract: There is provided an electrostatic-image-developing toner containing: a toner particle which contains a binder resin containing a polyester resin, a release agent, and a styrene (meth)acrylic resin and in which the styrene (meth)acrylic resin forms a domain having a number average diameter of 300 nm to 800 nm in the toner particle; and an inorganic particle in which the number average diameter of the domain is from 1.5 times to 10 times the number average particle diameter of the inorganic particle.

Abstract: There is provided an electrostatic image-developing toner containing a toner particle containing a binder resin and a release agent and having a sea-island structure involving a sea part containing the binder resin and an island part containing the release agent, in which a mode value of the distribution of the eccentricity degree B represented by the specific formula of the release agent-containing island part is from 0.75 to 0.98 and a skewness of the distribution of the eccentricity degree B is from ?1.10 to ?0.50; and an external additive containing a silica particle having a volume average particle diameter of 80 nm to 200 nm; wherein a bulk density of the toner is from 0.33 g/cm3 to 0.40 g/cm3.

Abstract: There is provided an electrostatic image-developing toner containing a binder resin, a coloring agent and a release agent having a melting temperature of 85° C. to 120° C., the toner having a sea-island structure involving a sea part containing the binder resin and an island part containing the release agent, wherein a mode value of the distribution of the eccentricity degree B of the release agent-containing island part, represented by the specific formula, is from 0.75 to 1.00 and a skewness of the distribution of the eccentricity degree B is from ?1.30 to ?0.50.

Abstract: An electrostatic charge image developing toner includes toner particles containing a binder resin and a colorant, and strontium titanate particles, wherein the strontium titanate particles have a volume average particle diameter of 800 nm to 10,000 nm, a maximum peak at a Bragg angle of 32.2° in CuK? characteristic X-ray diffraction, and a half-value width of the maximum peak equal to or greater than 0.5 degrees.