Abstract: An ink set includes an ink A including water, a first organic solvent, and a first pigment and an ink B including water, a second organic solvent, a second pigment, and a urethane resin particle. The first organic solvent includes at least one of N,N-dimethyl-?-buthoxy propionamide, N,N-dimethyl-?-methoxy propionamide, and 3-ethyl-3-hydroxymethyl oxetane and has a mixing solubility parameter A of 10.00 to less than 13.00 and the second organic solvent has a mixing solubility parameter B of 13.00 to 16.00.

Abstract: An ink set includes an ink A including water, a first organic solvent, and a first pigment and an ink B including water, a second organic solvent, a second pigment, and a urethane resin particle. The first organic solvent includes at least one of N,N-dimethyl-?-buthoxy propionamide, N,N-dimethyl-?-methoxy propionamide, and 3-ethyl-3-hydroxymethyl oxetane and has a mixing solubility parameter A of 10.00 to less than 13.00 and the second organic solvent has a mixing solubility parameter B of 13.00 to 16.00.

Abstract: An ink set includes an ink A including water, a first organic solvent, and a first pigment and an ink B including water, a second organic solvent, a second pigment, and a urethane resin particle. The first organic solvent includes at least one of N,N-dimethyl-?-buthoxy propionamide, N,N-dimethyl-?-methoxy propionamide, and 3-ethyl-3-hydroxymethyl oxetane and has a mixing solubility parameter A of 10.00 to less than 13.00 and the second organic solvent has a mixing solubility parameter B of 13.00 to 16.00.

Abstract: A drying device includes heaters disposed along the direction of conveyance of a recording medium to which liquid is applied, the heaters being configured to heat the recording medium, wherein the recording medium is conveyed in contact with the heaters on a conveyance path including a first path on which the recording medium is conveyed in contact with the heaters for the second time and a second path on which the recording medium is conveyed in contact with the heaters for the second time, wherein a dried film of the liquid formed by the following method has a Martens hardness of 30 N/mm2 or greater at 120 degrees C.: method: the liquid is applied to a glass plate to form a film and the film is dried with a reduced pressure at 100 degrees C. for three hours to obtain the dried film having an average thickness of 5 ?m.

Abstract: An image forming method includes applying an ink for the first time to a recording medium to form an image and rolling up the recording medium in a roll form, wherein the recording medium is continuous paper, the ink includes an organic solvent and a coloring material, and the image recorded matter has a tackiness power of from 80 to 110 nN.

Abstract: An ink set includes an ink A including water, a first organic solvent, and a first pigment and an ink B including water, a second organic solvent, a second pigment, and a urethane resin particle. The first organic solvent includes at least one of N,N-dimethyl-?-buthoxy propionamide, N,N-dimethyl-?-methoxy propionamide, and 3-ethyl-3-hydroxymethyl oxetane and has a mixing solubility parameter A of 10.00 to less than 13.00 and the second organic solvent has a mixing solubility parameter B of 13.00 to 16.00.

Abstract: An image forming method includes applying an ink for the first time to a recording medium to form an image and rolling up the recording medium in a roll form, wherein the recording medium is continuous paper, the ink includes an organic solvent and a coloring material, and the image recorded matter has a tackiness power of from 80 to 110 nN.

Abstract: A drying device includes heaters disposed along the direction of conveyance of a recording medium to which liquid is applied, the heaters being configured to heat the recording medium, wherein the recording medium is conveyed in contact with the heaters on a conveyance path including a first path on which the recording medium is conveyed in contact with the heaters for the second time and a second path on which the recording medium is conveyed in contact with the heaters for the second time, wherein a dried film of the liquid formed by the following method has a Martens hardness of 30 N/mm2 or greater at 120 degrees C.: method: the liquid is applied to a glass plate to form a film and the film is dried with a reduced pressure at 100 degrees C. for three hours to obtain the dried film having an average thickness of 5 ?m.

Abstract: An ink set includes an ink A including water, a first organic solvent, and a first pigment and an ink B including water, a second organic solvent, a second pigment, and a urethane resin particle. The first organic solvent includes at least one of N,N-dimethyl-?-buthoxy propionamide, N,N-dimethyl-?-methoxy propionamide, and 3-ethyl-3-hydroxymethyl oxetane and has a mixing solubility parameter A of 10.00 to less than 13.00 and the second organic solvent has a mixing solubility parameter B of 13.00 to 16.00.

Abstract: An image forming method includes applying an ink for the first time to a recording medium to form an image and rolling up the recording medium in a roll form, wherein the recording medium is continuous paper, the ink includes water, an organic solvent, and a coloring material, and the image has a tackiness power of from 80 to 110 nN.

Abstract: An ink includes an organic solvent and polyethylene wax, wherein the polyethylene wax has a penetration of 1.2 or less as measured according to JIS K2235 format.

Abstract: A method for producing a cleaning blade including at least a strip-shaped elastic blade, the method including: (1) a step of producing an elastic blade preform formed of a polyurethane rubber; (2) a step of impregnating at least a part, which is to contact an image bearer, of the elastic blade preform with an ultraviolet-curable composition including a (meth)acrylate compound; (3) a step of immersing the part impregnated of the elastic blade preform in a washing solvent to remove the ultraviolet-curable composition including the (meth)acrylate compound remaining on a surface of the impregnated part; and (4) a step of curing the ultraviolet-curable composition including the (meth)acrylate compound that has impregnated the elastic blade preform to produce an elastic blade.

Abstract: Provided is a cleaning blade including an elastic member, wherein a spin-spin relaxation time (T2) of the elastic member obtained by a solid echo method in a pulse NMR analysis is longer than or equal to 0.60 msec but shorter than or equal to 1.0 msec, and wherein the elastic member has a contact part to contact a surface of a cleaning target member, and the contact part contains a cured product of a curable composition.

Abstract: A cleaning blade includes an elastic member including a contact portion to contact the surface of a member to be cleaned and remove an extraneous matter adhering to the surface of the member. The contact portion includes a modified portion including at least one of an impregnated portion including a first cured material formed of a first curing composition in a thickness direction from the surface of the contact portion; and a surface layer formed of a second curing composition on the surface of the contact portion. The surface of the modified portion has a tack maximum value not greater than 3.0 [gf/mm2].

Abstract: An image forming method includes applying an ink for the first time to a recording medium to form an image and rolling up the recording medium in a roll form, wherein the recording medium is continuous paper, the ink includes water, an organic solvent, and a coloring material, and the image has a tackiness power of from 80 to 110 nN.

Abstract: An ink set includes an ink A including water, a first organic solvent, and a first pigment and an ink B including water, a second organic solvent, a second pigment, and a urethane resin particle. The first organic solvent includes at least one of N,N-dimethyl-?-buthoxy propionamide, N,N-dimethyl-?-methoxy propionamide, and 3-ethyl-3-hydroxymethyl oxetane and has a mixing solubility parameter A of 10.00 to less than 13.00 and the second organic solvent has a mixing solubility parameter B of 13.00 to 16.00.

Abstract: Provided is a cleaning blade including an elastic member configured to abut on a surface of a cleaning target member and remove residual material deposited thereon, wherein elastic member satisfies requirements a to c below, a. an abutment part of the elastic member to abut on the surface of the cleaning target member has a reformed layer, b. Martens hardness at a surface of the reformed layer is from 1.5 to 15 N/mm2, and c. a relationship H/L between maximum Martens hardness H among Martens hardnesses H in a region inward from the abutment part thicknesswise and distance L from the surface of the reformed layer is from 0.010 to 0.2 (N/mm2·1/?m), where distance L represents minimum distance among distances to the surface of the reformed layer, from positions at which a measured Martens hardness and a measured elastic power are equal to those of the elastic member.

Abstract: Provided is an ink including water, at least one organic solvent, a coloring material, urethane-based resin particles, and acrylic-based resin particles, wherein a difference between a total HSP value of an organic solvent having the highest boiling point of the at least one organic solvent and a total HSP value of the urethane-based resin particles is 6.0 [(J/cm3)0.5] or less, and wherein a difference between a polarity HSP value of the organic solvent having the highest boiling point of the at least one organic solvent and a polarity HSP value of the urethane-based resin particles is 5.0 [(J/cm3)0.5] or less.

Abstract: Provided is an ink including: an organic solvent; water; a coloring material; a wax; and resin particles, wherein the resin particles include acrylic resin particles and urethane resin particles, and wherein a ratio by mass (urethane resin particles/acrylic resin particles) of a proportion (percent by mass) of the urethane resin particles to a proportion (percent by mass) of the acrylic resin particles is 0.1 or greater but 0.7 or less. In a preferable aspect, the wax is a polyethylene wax. In another preferable aspect, the urethane resin particles are polycarbonate urethane resin particles.

Abstract: An image forming apparatus is provided which includes an image bearer, a charger to charge the image bearer, a latent image forming device to form an electrostatic latent image on the image bearer, a developing device to develop the electrostatic latent image with a toner, a transfer device to transfer the toner image onto a transfer medium, and a cleaning blade to remove residual toner particles remaining on the image bearer. The toner includes a binder resin and a release agent. The release agent has a longest length Lmax in the toner, which is equal to or greater than 1.1 times a maximum Feret diameter Df of the toner. The cleaning blade includes a strip-like elastic body blade having a contact part with the image bearer. The contact part includes a cured product of an ultraviolet curable composition including an acrylate or methacrylate compound having an alicyclic structure.