Abstract: A liquid composition includes an inorganic particle and a multivalent metal salt, wherein the liquid composition has a tacking force of 50 mN or less in an area of cast-coated paper where the liquid composition is applied in an amount of 0.12 mg/cm2 for the cast-coated paper followed by heating at 80 degrees C. for 15 seconds.

Abstract: Provided is an ink including: a pigment-containing matter containing a pigment; an organic solvent; water; and a compound represented by General Formula (1) below. A difference (Ra?R0) is 2.0 or less, where Ra is a distance between a Hansen solubility parameter of the organic solvent and a Hansen solubility parameter of the pigment-containing matter determined by a Hansen solubility sphere method, and R0 is an interaction radius of the pigment-containing matter determined by the Hansen solubility sphere method. In the General Formula (1), R1, R2, R3, and R4 each independently represent a hydrogen atom or an alkyl group having 1 or more but 5 or less carbon atoms, and n represents an integer of 3 or more but 11 or less.

Abstract: An ink contains water, an organic solvent, a resin, and a pigment, wherein the organic solvent has a Hansen solubility parameter (HSP) value in a Hansen sphere in a ?D axis, ?P axis, and ?H axis coordinate space of a solid content of the ink.

Abstract: An ink and processing liquid set contains a processing liquid to be applied to a recording medium, the processing liquid including a multivalent metal salt and an ink to be applied to an area of the recording medium where the processing liquid has been applied, the ink including a urethane resin, a styrene-acrylic resin, and a pigment, wherein the following relations are satisfied: 0.5?B/C?0.7, where B represents a static surface tension of the ink and C represents a static surface tension of the processing liquid; and 0.5?E/D?0.9, and 35 (mN/m)?E?55 (mN/m), where D represents a dynamic surface tension at 15 ms of the processing liquid and E represents a dynamic surface tension at 1500 ms of the processing liquid.

Abstract: An image forming method includes applying a processing fluid to a recording medium, applying an ink to the recording medium onto which the processing fluid has been applied, and heating the recording medium onto which the ink has been applied, wherein the ink comprises a black ink and at least one color ink other than the black ink, wherein the following relationship is satisfied: |?(k)-?(c)|?5 mN/m, where ?(k) represents a dynamic surface tension of the black ink at a surface lifetime of 15 ms and ?(c) represents a dynamic surface tension of the at least one color ink at a surface lifetime of 15 ms, wherein the ink discharged from an extreme downstream nozzle in a direction of recording medium conveyance is heated at 1.5 seconds or less after the ink is attached to the recording medium.

Abstract: A liquid composition includes an inorganic particle and a multivalent metal salt, wherein the liquid composition has a tacking force of 50 mN or less in an area of cast-coated paper where the liquid composition is applied in an amount of 0.12 mg/cm2 for the cast-coated paper followed by heating at 80 degrees C. for 15 seconds.

Abstract: An image forming method includes applying white ink containing hollow resin particulate to a recording medium and contacting a heating roller having a diameter of 200 mm or less with a first surface of the recording medium.

Abstract: A liquid discharge system includes a pretreatment execution device to perform pretreatment on a medium and a liquid discharge head to discharge liquid onto the medium based on image information on an image to be output. The liquid discharge system further includes circuitry configured to control a manner of the pretreatment based on the image information.

Abstract: An image forming method includes applying a processing fluid to a recording medium, applying an ink to the recording medium onto which the processing fluid has been applied, and heating the recording medium onto which the ink has been applied, wherein the ink comprises a black ink and at least one color ink other than the black ink, wherein the following relationship is satisfied: |?(k)-?(c)|?5 mN/m, where ?(k) represents a dynamic surface tension of the black ink at a surface lifetime of 15 ms and ?(c) represents a dynamic surface tension of the at least one color ink at a surface lifetime of 15 ms, wherein the ink discharged from an extreme downstream nozzle in a direction of recording medium conveyance is heated at 1.5 seconds or less after the ink is attached to the recording medium.

Abstract: A printing method includes applying a processing fluid to a recording medium and applying an ink to the recording medium, wherein the processing fluid contains a first nonionic resin including the following structure unit a-1, the first nonionic resin having a glass transition temperature of 15 degrees C.

Abstract: An ink and processing liquid set contains a processing liquid to be applied to a recording medium, the processing liquid comprising a multivalent metal salt and an ink to be applied to an area of the recording medium where the processing liquid has been applied, the ink comprising a urethane resin, a styrene-acrylic resin, and a pigment, wherein the following relations are satisfied: 0.5?B/C?0.7, where B represents a static surface tension of the ink and C represents a static surface tension of the processing liquid; and 0.5?E/D?0.9, and 35 (mN/m)?E?55 (mN/m), where D represents a dynamic surface tension at 15 ms of the processing liquid and E represents a dynamic surface tension at 1500 ms of the processing liquid.

Abstract: An image forming method includes applying white ink containing hollow resin particulate to a recording medium and contacting a heating roller having a diameter of 200 mm or less with a first surface of the recording medium.

Abstract: A liquid discharge system includes a pretreatment execution device to perform pretreatment on a medium and a liquid discharge head to discharge liquid onto the medium based on image information on an image to be output. The liquid discharge system further includes circuitry configured to control a manner of the pretreatment based on the image information.

Abstract: A surface treatment liquid composition for a substrate includes a nonionic resin particle and a multivalent metal salt.

Abstract: A printing method includes applying a processing fluid to a recording medium and applying an ink to the recording medium, wherein the processing fluid contains a first nonionic resin including the following structure unit a-1, the first nonionic resin having a glass transition temperature of 15 degrees C.

Abstract: A surface treatment liquid composition for a substrate includes a nonionic resin particle and a multivalent metal salt.

Abstract: An intermediate transferer includes a substrate; and a surface layer overlying the substrate. The surface layer includes a crosslinked material, including a polyrotaxane including a circular molecule; a straight-chain molecule including the circular molecule in a skewering form; and a block group located at both ends of the straight-chain molecule, preventing the circular molecule from releasing, and at least one resin selected from the group consisting of acrylic resins, fluoreresins and silicone resins.

Abstract: An intermediate transferer a toner image formed by developing a latent image on an image bearer with a toner is transferred onto includes a substrate including a polycarbonate resin and a carbon black. The intermediate transferer has a surface resistivity of from 10 to 12 Log ?/? when applied with a volt of 500 V, a volume resistivity of from 7.5 to 9.5 Log ?·cm when applied with a volt of 100 V, and a difference between the surface resistivity and the volume resistivity of from 1.5 to 4.0 digits.

Abstract: An intermediate transferer includes a substrate; and a surface layer overlying the substrate. The surface layer includes a crosslinked material, including a polyrotaxane including a circular molecule; a straight-chain molecule including the circular molecule in a skewering form; and a block group located at both ends of the straight-chain molecule, preventing the circular molecule from releasing, and at least one resin selected from the group consisting of acrylic resins, fluoreresins and silicone resins.