Abstract: An ink set comprises black ink having a static surface tension A and yellow ink having a static surface tension B, wherein the static surface tension A is by 0.6 mN/m or more greater than the static surface tension B, wherein the ink set is used in an image forming device including an inkjet head including a nozzle plate including a first nozzle array and a second nozzle array disposed adjacent to the first nozzle array, the first nozzle array including multiple first nozzles configured to discharge the black ink and a second nozzle array including multiple second nozzles configured to discharge the yellow ink, wherein each nozzle of the multiple first nozzles and the multiple second nozzles has a cylindrical portion having a length of 25 ?m or longer along an axial direction with an opening on an ink discharging side of the nozzle plate.

Abstract: An ink comprises water, a coloring material, and a cross-linked material comprising a structure unit represented by the following Chemical formula 1 and a structure unit represented by the following Chemical formula 2, in Chemical formula 1, X represents a hydrogen atom or a cation and R1 represents a hydrogen atom or a methyl group, in Chemical formula 2, R2 represents a hydrogen atom or a methyl group, L represents an alkylene group having 2 to 18 carbon atoms, and * represents an atomic bond.

Abstract: A balloon coating method and a balloon coating apparatus are disclosed for forming a coating layer containing a water-insoluble drug on an outer surface of a balloon of a balloon catheter. The balloon coating method including fixing a connection portion between the balloon and an inner tube passing through an inside of the balloon, and moving a dispensing tube relative to the balloon in an axial direction of the balloon while rotating the balloon about an axis of the balloon and while also dispensing the coating liquid containing the water-insoluble drug from the dispensing tube to apply the coating liquid to the outer surface of the balloon.

Abstract: A balloon coating method for forming a coating layer on the outer surface of a balloon of a balloon catheter includes: inserting a core member into a guide wire lumen penetrating the balloon, disposing a proximal portion of the core member on a proximal side of a region of inflation of the balloon, with a distal portion of the core member protruded distally beyond a distal opening portion of the guide wire lumen, and fixing by clamping together with the core member a part of the balloon catheter that is on a distal side of the region of inflation; and moving a dispensing tube for supplying a coating liquid containing the drug relative to the balloon in an axial direction of the balloon, while rotating the balloon about an axis of the balloon, thereby to apply the coating liquid to the outer surface of the balloon.

Abstract: An image forming method is provided. The method includes the steps of: applying a liquid composition, comprising a pigment, water, a resin, and an organic solvent, to a recording medium having water-absorptivity to form an image thereon; and winding up the recording medium in a roll form after the applying, wherein the following formulae are satisfied: 1.00×10?3?A?4.00×10?1 0.010?B/A?0.100 where B (mg/cm2) represents an amount of the organic solvent contained in the image after the winding and A (mg/cm2) represents a total amount of the organic solvent contained in the image and the recording medium after the winding.

Abstract: An ink discharge device is provided including an ink, an ink discharge head, and a circulator. The ink discharge head includes a nozzle, an individual liquid chamber communicated with the nozzle, a flow-in channel, and a flow-out channel. The circulator circulates the ink by letting the ink flow into the individual liquid chamber via the flow-in channel and flow out from the individual liquid chamber via the flow-out channel. A flow rate of the circulated ink is 0.10 to 1.50 times a maximum dischargeable rate of the ink discharge head. A dynamic surface tension A of the ink at 25° C. is 34.0 mN/m or less when measured by a maximum bubble pressure method at a surface lifetime of 15 msec, and the dynamic surface tension A and a static surface tension B of the ink at 25° C. satisfy the following relation: 10.0(%)?[(A?B)/(A+B)]×100?19.0(%).

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 includes a pigment, a wax, a water soluble solvent including a solvent having an SP value of from 9.0 to 11.0, and water, wherein the mass ratio of the content of the wax in the ink to the content of the solvent having an SP value of from 9.0 to 11.0 is in a range of from 1.0:2.5 to 1.0:25.0.

Abstract: An ink includes a coloring material, one or more organic solvents, a resin particle including a structure unit having a carboxyl group and a structure unit having an alkoxysilyl group, and water. The one or more organic solvents includes at least one organic solvent having a solubility parameter of 8.96 to less than 11.8. The ink has a dynamic surface tension A of 34.0 mN/m or less for a surface life of 15 msec at 25 degrees C. according to maximum bubble pressure technique. The dynamic surface tension A and a static surface tension B of the ink at 25 degrees C. satisfy the following relation: 10.0 percent?[(A?B)/(A+B)]×100?19.0 percent.

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 an ink containing a colorant, an organic solvent, and water, wherein the ink contains as the organic solvent, at least one kind of an organic solvent having a solubility parameter of greater than or equal to 9 but less than 11.8, wherein a content of the organic solvent having a solubility parameter of greater than or equal to 9 but less than 11.8 is greater than or equal to 20% by mass of a total amount of the ink, wherein a dynamic surface tension A of the ink at 25° C. at a surface lifetime, measured by a maximum foaming pressure method, of 15 msec is less than or equal to 34.0 mN/m, and wherein the dynamic surface tension A and a static surface tension B of the ink at 25° C. satisfy a formula of 10.0%?[(A?B)/(A+B)]×100?19.0%.

Abstract: An image forming method is provided. The method includes the steps of: applying a liquid composition, comprising a pigment, water, a resin, and an organic solvent, to a recording medium having water-absorptivity to form an image thereon; and winding up the recording medium in a roll form after the applying, wherein the following formulae are satisfied: 1.00×10?3?A?4.00×10?1 0.010?B/A?0.100 where B (mg/cm2) represents an amount of the organic solvent contained in the image after the winding and A (mg/cm2) represents a total amount of the organic solvent contained in the image and the recording medium after the winding.

Abstract: Provided is an ink containing a wax, a plurality of organic solvents, and water, wherein the plurality of organic solvents include a compound having a solubility parameter of 9 or greater but 11 or less and a compound having a saturated vapor pressure at 100° C. of 20 mmHg or greater but 400 mmHg or less.

Abstract: A balloon coating method for forming a coating layer on the outer surface of a balloon of a balloon catheter includes: inserting a core member into a guide wire lumen penetrating the balloon, disposing a proximal portion of the core member on a proximal side of a region of inflation of the balloon, with a distal portion of the core member protruded distally beyond a distal opening portion of the guide wire lumen, and fixing by clamping together with the core member a part of the balloon catheter that is on a distal side of the region of inflation; and moving a dispensing tube for supplying a coating liquid containing the drug relative to the balloon in an axial direction of the balloon, while rotating the balloon about an axis of the balloon, thereby to apply the coating liquid to the outer surface of the balloon.

Abstract: An ink discharge device including an ink, an ink discharge head, and a negative pressure generator is provided. The ink comprises water, a colorant, an organic solvent X having a solubility parameter of from 8.9 to 12.0 and comprising no glycol ether compound, and a copolymer comprising a structural unit represented by the following formula (1): where R1 represents a hydrogen atom or methyl group and Y represents an alkylene group having 2 to 18 carbon atoms. The ink discharge head includes a nozzle to discharge the ink, a plurality of individual liquid chambers in communication with the nozzle, a flow-in channel to let the ink flow into the individual liquid chambers, and a flow-out channel to let the ink flow out from the individual liquid chambers. The negative pressure generator is configured to generate a negative pressure that lets the ink flow out from the individual liquid chambers.

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 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 balloon coating method for forming a coating layer containing a water-insoluble drug on an outer surface of a balloon of a balloon catheter includes: inserting a core member into a guide wire lumen penetrating the balloon, disposing a proximal portion of the core member on a proximal side of a region of inflation of the balloon, with a distal portion of the core member protruded distally beyond a distal opening portion of the guide wire lumen, and fixing by clamping together with the core member a part of the balloon catheter that is on a distal side of the region of inflation; and moving a dispensing tube for supplying a coating liquid containing the drug relative to the balloon in an axial direction of the balloon, while rotating the balloon about an axis of the balloon, thereby to apply the coating liquid to the outer surface of the balloon.

Abstract: A balloon coating method and a balloon coating apparatus are disclosed for forming a coating layer containing a water-insoluble drug on an outer surface of a balloon of a balloon catheter. The balloon coating method including fixing a connection portion between the balloon and an inner tube passing through an inside of the balloon, and moving a dispensing tube relative to the balloon in an axial direction of the balloon while rotating the balloon about an axis of the balloon and while also dispensing the coating liquid containing the water-insoluble drug from the dispensing tube to apply the coating liquid to the outer surface of the balloon.

Abstract: An ink discharge device is provided including an ink, an ink discharge head, and a circulator. The ink discharge head includes a nozzle, an individual liquid chamber communicated with the nozzle, a flow-in channel, and a flow-out channel. The circulator circulates the ink by letting the ink flow into the individual liquid chamber via the flow-in channel and flow out from the individual liquid chamber via the flow-out channel. A flow rate of the circulated ink is 0.10 to 1.50 times a maximum dischargeable rate of the ink discharge head. A dynamic surface tension A of the ink at 25° C. is 34.0 mN/m or less when measured by a maximum bubble pressure method at a surface lifetime of 15 msec, and the dynamic surface tension A and a static surface tension B of the ink at 25° C. satisfy the following relation: 10.0(%)?[(A?B)/(A+B)]×100?19.0(%).