Abstract: An employed rear mold is comprised of a plurality of mold pieces. The plurality of mold pieces include a first mold piece which forms a first partial internal surface of the internal surface of the rear mold along the entire circumference of the internal surface, and a second mold piece which is located axially forward of the first mold piece and forms a second partial internal surface of the internal surface of the rear mold along the entire circumference of the internal surface. Releasing the molded body includes starting to move the first mold piece rearward in relation to a rear molded portion, and, subsequently to starting to move the first mold piece, starting to move the second mold piece rearward in relation to the rear molded portion, thereby disassembling the rear mold into the plurality of mold pieces.

Abstract: An employed rear mold is comprised of a plurality of mold pieces. The plurality of mold pieces include a first mold piece which forms a first partial internal surface of the internal surface of the rear mold along the entire circumference of the internal surface, and a second mold piece which is located axially forward of the first mold piece and forms a second partial internal surface of the internal surface of the rear mold along the entire circumference of the internal surface. Releasing the molded body includes starting to move the first mold piece rearward in relation to a rear molded portion, and, subsequently to starting to move the first mold piece, starting to move the second mold piece rearward in relation to the rear molded portion, thereby disassembling the rear mold into the plurality of mold pieces.

Abstract: An ultrasonic transducer includes: piezoelectric elements; a pair of clamping members which clamp said piezoelectric elements; and a cover member which is crimped to at least one of said pair of clamping members in a state where said cover member cooperates with said pair of clamping members to surround said piezoelectric elements.

Abstract: The present invention relates to a process for preparing a toner for electrophotography comprising a crystalline polyester and a colorant, wherein the colorant is added in at least one of the neutralizing step, the emulsifying step, and the aggregating step and a process for preparing a toner for electrophotography comprising a crystalline polyester and a colorant, wherein the colorant is added in at least one of the neutralizing and emulsifying step, and the aggregating step. The toner obtained according to the process of the present invention can be suitably used, for example, in development of a latent image formed in electrophotography, electrostatic recording method, electrostatic printing method, or the like.

Abstract: An ultrasonic transducer includes: piezoelectric elements; a pair of clamping members which clamp said piezoelectric elements; and a cover member which is crimped to at least one of said pair of clamping members in a state where said cover member cooperates with said pair of clamping members to surround said piezoelectric elements.

Abstract: A toner for electrostatic image development, containing a resin binder containing a polyester having monomer units wherein at least one monomer is selected from the group consisting of fumaric acid and maleic acid, including mixtures thereof; a colorant; and a charge control agent containing a negatively chargeable charge control agent and a positively chargeable charge control agent, wherein the unreacted monomers of fumaric acid, maleic acid or both fumaric acid and maleic acid are contained in the toner in an amount of 0.20% by weight or less. The toner for electrostatic image development of the present invention may be used for the development of a latent image formed in electrophotography, electrostatic recording method, electrostatic printing method or the like.

Abstract: A resin binder for a toner comprising a crystalline polyester having a ratio of a softening point to a maximum peak temperature of heat of fusion (softening point/peak temperature) of from 0.6 to 1.3, wherein the crystalline polyester is prepared by polycondensing a monomer mixture comprising 0.1 to 10% by mol of at least one monovalent aliphatic compound selected from the group consisting of a monovalent aliphatic carboxylic acid compound having 10 to 24 carbon atoms and a monovalent aliphatic alcohol having 10 to 24 carbon atoms; a toner comprising a resin composition comprising the resin binder as defined in above; and a method for fixing a toner, wherein the toner as defined in above is applied to a heat-and-pressure fixing method. The toner comprising the above resin binder is used for developing electrostatic latent images formed in electrophotography, electrostatic recording method, electrostatic printing and the like.

Abstract: The present invention relates to a process for preparing a toner for electrophotography comprising a crystalline polyester and a colorant, wherein the colorant is added in at least one of the neutralizing step, the emulsifying step, and the aggregating step and a process for preparing a toner for electrophotography comprising a crystalline polyester and a colorant, wherein the colorant is added in at least one of the neutralizing and emulsifying step, and the aggregating step. The toner obtained according to the process of the present invention can be suitably used, for example, in development of a latent image formed in electrophotography, electrostatic recording method, electrostatic printing method, or the like.

Abstract: A toner comprising a resin binder, a colorant, and fine inorganic particles having a BET specific surface area of 30 m2/g or less, wherein the fine inorganic particles are added as an external additive, wherein the toner has a storage modulus at 100° C. using a 25 mm parallel plate of 7×104 Pa or less, a storage modulus at 60° C. using a 7.9 mm parallel plate of from 3×108 to 1×109 Pa, and a storage modulus at 70° C. using a 7.9 mm parallel plate of from 7×106 to 3×108 Pa; and a two-component developer comprising the toner. The toner can be used for the development of a latent image formed in electrophotography, electrostatic recording method, electrostatic printing method or the like.

Abstract: A toner for electrostatic image development, containing a resin binder containing a polyester having monomer units wherein at least one monomer is selected from the group consisting of fumaric acid and maleic acid, including mixtures thereof; a colorant; and a charge control agent containing a negatively chargeable charge control agent and a positively chargeable charge control agent, wherein the unreacted monomers of fumaric acid, maleic acid or both fumaric acid and maleic acid are contained in the toner in an amount of 0.20% by weight or less. The toner for electrostatic image development of the present invention may be used for the development of a latent image formed in electrophotography, electrostatic recording method, electrostatic printing method or the like.

Abstract: A toner for electrostatic image development comprising a high-softening point polyester having a softening point of 120° C. or more and 170° C. or less; a low-softening point polyester having a softening point of 80° C. or more and less than 120° C.; and a composite oxide of two or more metals, wherein the composite oxide has a BET specific surface area of 7 m2/g or more. The toner is suitably used for the development of a latent image formed in electrophotography, electrostatic recording method, electrostatic printing method or the like.

Abstract: A toner comprising a resin binder comprising a crystalline resin having a ratio of a softening point to a maximal peak temperature of heat of fusion of 0.6 or more and less than 1.1, and an amorphous hybrid resin having a ratio of a softening point to a maximal peak temperature of heat of fusion of from 1.1 to 4.0; and a colorant, wherein the amorphous hybrid resin comprises two polymerization resin components each having an independent reaction path, said two polymerization resin components being partially chemically bonded to each other, wherein at least one polymerization resin component is the same as that of the crystalline resin, and wherein a weight ratio of the crystalline resin to the amorphous hybrid resin (crystalline resin/amorphous hybrid resin) is from 1/99 to 50/50. The toner can be used for developing electrostatic latent images formed in electrophotography, electrostatic recording method, electrostatic printing, and the like.

Abstract: A toner comprising a resin binder, a colorant, and fine inorganic particles having a BET specific surface area of 30 m2/g or less, wherein the fine inorganic particles are added as an external additive, wherein the toner has a storage modulus at 100° C. using a 25 mm parallel plate of 7×104 Pa or less, a storage modulus at 60° C. using a 7.9 mm parallel plate of from 3×108 to 1×109 Pa, and a storage modulus at 70° C. using a 7.9 mm parallel plate of from 7×106 to 3×108 Pa; and a two-component developer comprising the toner. The toner can be used for the development of a latent image formed in electrophotography, electrostatic recording method, electrostatic printing method or the like.

Abstract: A resin binder for a toner comprising a crystalline polyester having a ratio of a softening point to a maximum peak temperature of heat of fusion (softening point/peak temperature) of from 0.6 to 1.3, wherein the crystalline polyester is prepared by polycondensing a monomer mixture comprising 0.1 to 10% by mol of at least one monovalent aliphatic compound selected from the group consisting of a monovalent aliphatic carboxylic acid compound having 10 to 24 carbon atoms and a monovalent aliphatic alcohol having 10 to 24 carbon atoms; a toner comprising a resin composition comprising the resin binder as defined in above; and a method for fixing a toner, wherein the toner as defined in above is applied to a heat-and-pressure fixing method. The toner comprising the above resin binder is used for developing electrostatic latent images formed in electrophotography, electrostatic recording method, electrostatic printing and the like.

Abstract: A toner comprising a resin binder comprising a crystalline resin having a ratio of a softening point to a maximal peak temperature of heat of fusion of 0.6 or more and less than 1.1, and an amorphous hybrid resin having a ratio of a softening point to a maximal peak temperature of heat of fusion of from 1.1 to 4.0; and a colorant, wherein the amorphous hybrid resin comprises two polymerization resin components each having an independent reaction path, said two polymerization resin components being partially chemically bonded to each other, wherein at least one polymerization resin component is the same as that of the crystalline resin, and wherein a weight ratio of the crystalline resin to the amorphous hybrid resin (crystalline resin/amorphous hybrid resin) is from 1/99 to 50/50. The toner can be used for developing electrostatic latent images formed in electrophotography, electrostatic recording method, electrostatic printing, and the like.

Abstract: A toner for electrostatic image development comprising a high-softening point polyester having a softening point of 120° C. or more and 170° C. or less; a low-softening point polyester having a softening point of 80° C. or more and less than 120° C.; and a composite oxide of two or more metals, wherein the composite oxide has a BET specific surface area of 7 m2/g or more. The toner is suitably used for the development of a latent image formed in electrophotography, electrostatic recording method, electrostatic printing method or the like.

Abstract: A toner for electrophotography comprising Resin (A) and Resin (B), wherein Resin (A) comprises Resin (C) and a wax dispersed therein, wherein a difference between the softening point of Resin (C) and the melting point of the wax is within 20° C., and the softening point of Resin (B) is higher than the softening point of Resin (C), which can be used for developing electrostatic latent images formed in electrophotography, electrostatic recording method, electrostatic printing, toner jetting and the like.

Abstract: A toner for electrophotography comprising Resin (A) and Resin (B), wherein Resin (A) comprises Resin (C) and a wax dispersed therein, wherein a difference between the softening point of Resin (C) and the melting point of the wax is within 20° C., and the softening point of Resin (B) is higher than the softening point of Resin (C), which can be used for developing electrostatic latent images formed in electrophotography, electrostatic recording method, electrostatic printing, toner jetting and the like.

Abstract: The positively chargeable toner includes a binder resin and a coloring agent, the binder resin including (a) a resin (1) capable of forming a matrix in the toner, the resin (1) being a hybrid resin of a polyester resin and a vinyl resin; and (b) a resin (2) capable of forming a domain dispersed in the matrix formed by the resin (1), the resin (2) being a vinyl resin having a positive charge functional group. This positively chargeable toner has a good evenness of chargeability and a high charging-up speed with a small proportion of a reversely charged toner upon triboelectric charging. Moreover, in a heat roller fixing method, fixing at a low temperature can be performed without using an offset inhibiting liquid.

Abstract: The toner for electrophotography contains a binder resin, wherein the binder resin has a condensation polymerization-type resin for forming a matrix and an addition polymerization-type resin for forming a dispersed domain. The dispersed domain with a cross-sectional diameter of not more than 2 .mu.m has an areal proportion of not less than 90%, based on the total cross-sectional area of the dispersed domain. This toner is stable, which is capable of maintaining a suitable tribo electric charge, thereby providing a high image quality in which the formed images do not undergo deterioration even under severe environmental conditions. Moreover, in a fixing method using a heat roller; fixing at a low temperature can be performed without using an offset inhibiting liquid.