Abstract: Provided are a method of producing an electrophotographic photosensitive member, particularly, a method of producing an electrophotographic photosensitive member and an organic device by which, in a method of forming a charge transporting layer, the stability of an application liquid for the layer after long-term storage is improved while the usage of an organic solvent in the application liquid is curtailed, and the layer having high uniformity is formed. The method is a method of producing an electrophotographic photosensitive member which includes a support and a charge transporting layer formed thereon, the method including: preparing a solution including: a first liquid whose solubility in water under 25° C. and 1 atmosphere is 1.0 mass % or less; a second liquid whose solubility in water under 25° C. and 1 atmosphere is 5.

Abstract: The invention has a process of preparing a dispersion liquid by dispersing particles containing a charge transporting substance and a binder resin in liquid medium containing a specific liquid to prepare a dispersion liquid and a process of forming a coat of the dispersion liquid, and heating and drying the coat to dissolve the particles containing the charge transporting substance and the binder resin with liquid medium to form a charge transporting layer.

Abstract: In a process for producing an electrophotographic photosensitive member, in particular, a process of forming a charge transporting layer, a production process is provided by which the stability of a charge transporting layer coating fluid even after its storage for a long time is improved so as to form a coat for a charge transporting layer having a high uniformity.

Abstract: A method for producing an electrophotographic photosensitive member has a charge transporting layer, including preparing a first solution containing a specified first liquid, a charge transporting substance and a binder resin, preparing a second solution containing a specified second liquid and water, preparing an emulsion from the first and second solutions, forming the emulsion coating, and heating the coat to form the charge transporting layer, and a method for producing an organic device has a charge transporting layer, including preparing a first solution containing a specified first liquid and a charge transporting substance, preparing a second solution containing a specified second liquid and water, preparing an emulsion from the first and second solutions, forming the emulsion coating, and heating the coat to form the charge transporting layer are used.

Abstract: There are provided an electrophotographic photosensitive member and an intermediate transfer member each having good lubricity and good cleaning property on its surface, a process cartridge and an electrophotographic apparatus each including the electrophotographic photosensitive member, and an electrophotographic apparatus including the intermediate transfer member. Therefore, a surface layer of the electrophotographic photosensitive member or intermediate transfer member of the present invention contains a matrix component and a rotatably-retained spherical particle that is not bound with the matrix component and is rotatably retained in a pore in the matrix component.

Abstract: The invention has a process of preparing a dispersion liquid by dispersing particles containing a charge transporting substance and a binder resin in liquid medium containing a specific liquid to prepare a dispersion liquid and a process of forming a coat of the dispersion liquid, and heating and drying the coat to dissolve the particles containing the charge transporting substance and the binder resin with liquid medium to form a charge transporting layer.

Abstract: In a process for producing an electrophotographic photosensitive member, in particular, a process of forming a charge transporting layer, a production process is provided by which the stability of a charge transporting layer coating fluid even after its storage for a long time is improved so as to form a coat for a charge transporting layer having a high uniformity.

Abstract: A method for producing an electrophotographic photosensitive member has a charge transporting layer, including preparing a first solution containing a specified first liquid, a charge transporting substance and a binder resin, preparing a second solution containing a specified second liquid and water, preparing an emulsion from the first and second solutions, forming the emulsion coating, and heating the coat to form the charge transporting layer, and a method for producing an organic device has a charge transporting layer, including preparing a first solution containing a specified first liquid and a charge transporting substance, preparing a second solution containing a specified second liquid and water, preparing an emulsion from the first and second solutions, forming the emulsion coating, and heating the coat to form the charge transporting layer are used.

Abstract: Provided are a method of producing an electrophotographic photosensitive member, particularly, a method of producing an electrophotographic photosensitive member and an organic device by which, in a method of forming a charge transporting layer, the stability of an application liquid for the layer after long-term storage is improved while the usage of an organic solvent in the application liquid is curtailed, and the layer having high uniformity is formed. The method is a method of producing an electrophotographic photosensitive member which includes a support and a charge transporting layer formed thereon, the method including: preparing a solution including: a first liquid whose solubility in water under 25° C. and 1 atmosphere is 1.0 mass % or less; a second liquid whose solubility in water under 25° C. and 1 atmosphere is 5.

Abstract: There are provided an electrophotographic photosensitive member and an intermediate transfer member each having good lubricity and good cleaning property on its surface, a process cartridge and an electrophotographic apparatus each including the electrophotographic photosensitive member, and an electrophotographic apparatus including the intermediate transfer member. Therefore, a surface layer of the electrophotographic photosensitive member or intermediate transfer member of the present invention contains a matrix component and a rotatably-retained spherical particle that is not bound with the matrix component and is rotatably retained in a pore in the matrix component.

Abstract: The invention provides an ink composition, which is improved in dispersibility and fastness properties and is excellent in dispersion stability and re-solubility owing to dispersed particles in which a coloring material is included by a crosslinked hydrophobic block segment in a dispersing polymer. The ink composition contains an amphiphilic block polymer compound, in which a coloring material is included, and a medium, wherein the amphiphilic block polymer compound, in which the coloring material is included, forms a dispersed particle having the hydrophobic block segment as an internal core part, and the hydrophobic block segment is crosslinked.

Abstract: A novel liquid composition set is provided for forming an image or pattern by functional substances such as a colorant without causing blurring. Each of the liquid compositions of the set includes a functional substance, an amphiphilic block copolyrner or graft copolymer having an organic acid group, and a liquid medium, wherein the organic acid groups of the copolymers are different in pKa, and the amphiphilic polymer contained in the first liquid composition becomes viscous by pH change on contact with the second liquid composition different in pH from the first liquid composition.

Abstract: Disclosed herein is a resin-containing composition comprising a solvent, a coloring material insoluble in the solvent and a block polymer compound having a repeating structural unit represented by the following general formula (1): wherein X is a polyalkenyl group which may be substituted, A is a linear or branched alkylene group having 1 to 15 carbon atoms, which may be substituted, at least one CH2 of the alkylene group may be substituted by O, m is an integer of from 0 to 30, the respective A groups may be different from each other when m is plural, Y is at least one of S, O and Se with the proviso that Y contains at least one S and that S, O and Se are each linked via a single bond, and R is a linear or branched alkyl group which may be substituted, an aromatic ring which may be substituted, or a structure in which at most 3 fused rings or aromatic rings, which may be substituted, are bonded via a single bond.

Abstract: A composition comprises a solvent, and an electroconductive substance and an amphiphilic block copolymers having a polyalkenyl ether repeating-unit structure, or a block copolymer enclosing an electroconductive substance. A black ink composition comprises a fine particulate metal having an average particle diameter of not more than 20 nm, an amphiphilic block copolymer, and a solvent. A method for forming an electroconductive pattern by applying the composition. A method for forming an electroconductive pattern by applying a composition comprises a block copolymer enclosing an electroconductive substance, system to form an electroconductive pattern on the substrate.

Abstract: The invention provides an ink composition, which is improved in dispersibility and fastness properties and is excellent in dispersion stability and re-solubility owing to dispersed particles in which a coloring material is included by a crosslinked hydrophobic block segment in a dispersing polymer. The ink composition contains an amphiphilic block polymer compound, in which a coloring material is included, and a medium, wherein the amphiphilic block polymer compound, in which the coloring material is included, forms a dispersed particle having the hydrophobic block segment as an internal core part, and the hydrophobic block segment is crosslinked.

Abstract: An amphiphilic block copolymer having an ionic functional group, wherein the ratio (N10/N5) of a rotational viscosity (N10) of a 10% by mass solution of the copolymer in purified water to a rotational viscosity (N5) of a 5% by mass solution of the copolymer in purified water is 2.5 or lower.

Abstract: There is provided a polymer compound including a repetitive unit structure represented by the following general formula (2): General formula (2): (where X? represents a polyalkenyl group; A represents a linear or branched alkylene group having a carbon atom number of 1 to 15, which may be substituted; m represents an integer of 0 to 30; B represents a single bond or an alkylene group which may be substituted; D represents an aromatic ring structure which may be substituted; n represents an integer of 0 to 10; and R represents a hydrogen atom, an alkyl group which may be substituted, or an aromatic ring structure which may be substituted). The polymer compound is suitable for improving dispersibility of a coloring material or solid material in an ink composition or toner composition.

Abstract: A polymer compound of a block polymer containing at least three block segments each having a repeating unit structure comprising a polyalkenyl ether structure comprises a repeating unit structure having a silyl ether side chain represented by the formula (1) in at least one block segment of the block polymer and a repeating unit structure containing one kind or two or more kinds of either a side chain having an ionic functional group represented by the formula (2) or an ester-type functional group obtained by esterifying the ionic functional group in at least one other block segment.

Abstract: An image forming method which imparts two or more kinds of liquid compositions onto a recording medium to form an image thereon, the image forming method comprising the steps of: preparing plural liquid compositions including a first liquid composition containing a functional substance, an anionic amphiphilic polymer, and a liquid medium, and a second liquid composition containing a functional substance, a polyvalent cation, an anionic amphiphilic polymer, and a liquid medium, at least one of the polymer in the first composition and the polymer in the second composition being a block polymer or a graft polymer, and imparting the first and second compositions onto the medium to bring the first and second compositions into contact with each other to cause at least one to thicken.

Abstract: A block polymer comprised of a polyalkenyl ether main chain comprises a first block segment having hydrophobicity; a second block segment having an upper limit hydration temperature exceeding 70° C.; and a third block segment having an ionic property. A polymer-containing composition comprises the block polymer, a solvent or a dispersing medium, and a functional substance. An ink composition comprises the polymer-containing composition wherein the functional substance is colorant. A liquid application method comprises the steps of preparing the polymer-containing composition; and applying the polymer-containing composition to a medium. A liquid application apparatus comprises a liquid application means which makes energy act on the polymer-containing composition to apply the composition; and a drive means which drives the liquid application means. The polymer compound is capable of satisfactorily dispersing a functional substance in a solvent.