Abstract: The inkjet recording apparatus includes: a liquid set which includes a plurality of first liquids and a second liquid, the first liquids each containing solvent-insoluble materials, the second liquid causing the solvent-insoluble materials to form aggregate; a liquid ejection device which ejects the first liquids and the second liquid from different ejection ports; and a cleaning liquid supply device which supplies a cleaning liquid causing the aggregate of the solvent-insoluble materials to redispersed. The liquid set satisfies Dmax/Drain?2.6, where Dmax is a maximum of average particle sizes of the solvent-insoluble materials in the first liquids, and Dmin is a minimum of the average particle sizes of the solvent-insoluble materials in the first liquids.

Abstract: An image forming apparatus includes: a conveyance device which conveys an ejection receiving medium; and an ejection head which ejects and deposits droplets of liquid on the ejection receiving medium conveyed by the conveyance device, the deposited droplets of the liquid constituting an image on the ejection receiving medium, wherein the following conditions are satisfied: ?S??L; and d??{square root over (2)}×l, where ?S is a surface energy of the ejection receiving medium, ?L is a surface energy of the liquid, d is a diameter of each of the droplets of the liquid deposited on the ejection receiving medium, and l is a maximum of a resolution pitch of the image.

Abstract: A plurality of radiation images of an object are acquired by iterating the steps of: beginning driving of a rotation driving unit at the time at which a breathing signal having been detected by a breathing sensor has come into a predetermined state, performing a radiation imaging operation with a set of a radiation source and a radiation detector at the time, at which the heart has come into a predetermined state, in accordance with a heartbeat signal having been detected by a heartbeat sensor within a rotation driving period, during which the rotation driving unit performs the rotation driving, and ceasing the rotation driving of the rotation driving unit at the time at which the breathing of the object has come into a state other than the predetermined state.

Abstract: Placement of a marker is performed efficiently, when performing a plurality of radiation imaging operations of a subject with different imaging angles. An operator inputs a region of interest within a subject on a bed, via an operating section. The region of interest and a peripheral region thereof are set as an irradiation range, and the marker is placed in the peripheral region. A radiation source control section causes a radiation source to emit radiation toward the subject within the set irradiation range. Radiation which passes through the subject is obtained by a radiation image detector as a radiation image.

Abstract: An image forming apparatus forms an image on a recording medium by transferring an image formed on an intermediate transfer body to the recording medium. The image forming apparatus includes: a first liquid deposition device which performs deposition of a first liquid onto the intermediate transfer body, the first liquid containing solvent-insoluble material; a second liquid deposition device which performs deposition of a second liquid onto the intermediate transfer body before the deposition of the first liquid, the second liquid having a function of causing the solvent-insoluble material to aggregate; and a deposition control device which controls the deposition in such a manner that a minimum thickness of a layer of the second liquid formed on the intermediate transfer body at the deposition of the first liquid is not smaller than 1 ?m, and a volume of the deposition of the second liquid per unit surface area is not smaller than a volume of the deposition of the first liquid per unit surface area.

Abstract: The image forming apparatus includes: an intermediate transfer body; a first liquid application device which applies a first liquid containing an aggregating agent on the intermediate transfer body; a second liquid application device which applies a second liquid containing a solvent-insoluble material on the intermediate transfer body, the solvent-insoluble material being induced to form an aggregate by the aggregating agent to form an image on the intermediate transfer body; and a transfer device which transfers the image formed on the intermediate transfer body to a recording medium, wherein conditions of ?t>?2>?1 and ?g>?2>?1 are satisfied, where ?t is a surface energy of the intermediate transfer body, ?1 is a surface energy of the first liquid, ?2 is a surface energy of the second liquid, and ?g is a surface energy of the aggregate of the solvent-insoluble material.

Abstract: An image forming method of forming an image on an image forming body includes the steps of: applying a first treatment liquid onto the image forming body, the first treatment liquid having a first pH that is lower than an aggregation pH of the ink liquid; after the step of applying the first treatment liquid, depositing droplets of the ink liquid onto the image forming body on which the first treatment liquid has been applied, the droplets of the ink liquid being deposited according to the image data; after the step of depositing the droplets of the ink liquid, applying a second treatment liquid onto the image forming body on which the droplets of the ink liquid have been deposited, the second treatment liquid having a second pH that is lower than the aggregation pH of the ink liquid and lower than the first pH of the first treatment liquid; and after the step of applying the second treatment liquid, removing solvent derived from the ink liquid on the image forming body.

Abstract: The inkjet recording apparatus includes: a liquid set which includes a plurality of first liquids and a second liquid, the first liquids each containing solvent-insoluble materials, the second liquid causing the solvent-insoluble materials to form aggregate; a liquid ejection device which ejects the first liquids and the second liquid from different ejection ports; and a cleaning liquid supply device which supplies a cleaning liquid causing the aggregate of the solvent-insoluble materials to redispersed. The liquid set satisfies Dmax/Drain?2.6, where Dmax is a maximum of average particle sizes of the solvent-insoluble materials in the first liquids, and Dmin is a minimum of the average particle sizes of the solvent-insoluble materials in the first liquids.

Abstract: An image forming apparatus includes: a conveyance device which conveys an ejection receiving medium; and an ejection head which ejects and deposits droplets of liquid on the ejection receiving medium conveyed by the conveyance device, the deposited droplets of the liquid constituting an image on the ejection receiving medium, wherein the following conditions are satisfied: ?S??L; and d??{square root over (2)}×l, where ?S is a surface energy of the ejection receiving medium, ?L is a surface energy of the liquid, d is a diameter of each of the droplets of the liquid deposited on the ejection receiving medium, and l is a maximum of a resolution pitch of the image.

Abstract: The inkjet recording apparatus has: an ink liquid container which stores ink containing a solvent-insoluble material dispersed in a solvent; an ink supply channel which is connected to the ink liquid container; and a pair of electrodes which is provided in the ink liquid container and/or the ink supply channel, and between which a voltage is applied so that a remaining amount of the ink in the ink liquid container and/or the ink supply channel is evaluated, wherein ratio of particles having a particle size equal to or greater than 100 nm in the ink is 5 volume percent or less.

Abstract: The image forming apparatus includes: an intermediate transfer body; a first liquid application device which applies a first liquid containing an aggregating agent on the intermediate transfer body; a second liquid application device which applies a second liquid containing a solvent-insoluble material on the intermediate transfer body, the solvent-insoluble material being induced to form an aggregate by the aggregating agent to form an image on the intermediate transfer body; and a transfer device which transfers the image formed on the intermediate transfer body to a recording medium, wherein conditions of ?t>?2>?1 and ?g>?2>?1 are satisfied, where ?t is a surface energy of the intermediate transfer body, ?1 is a surface energy of the first liquid, ?2 is a surface energy of the second liquid, and ?g is a surface energy of the aggregate of the solvent-insoluble material.

Abstract: An image forming apparatus forms an image on a recording medium by transferring an image formed on an intermediate transfer body to the recording medium. The image forming apparatus includes: a first liquid deposition device which performs deposition of a first liquid onto the intermediate transfer body, the first liquid containing solvent-insoluble material; a second liquid deposition device which performs deposition of a second liquid onto the intermediate transfer body before the deposition of the first liquid, the second liquid having a function of causing the solvent-insoluble material to aggregate; and a deposition control device which controls the deposition in such a manner that a minimum thickness of a layer of the second liquid formed on the intermediate transfer body at the deposition of the first liquid is not smaller than 1 ?m, and a volume of the deposition of the second liquid per unit surface area is not smaller than a volume of the deposition of the first liquid per unit surface area.

Abstract: The ink tank assembly for an inkjet system includes: a tank which contains an ink; and an air/liquid separating member which is arranged in the tank. The ink has a surface tension higher than a surface free energy of the air/liquid separating member. The ink is a dispersion including a liquid and suspended particles of an insoluble material which is insoluble to the liquid. The insoluble material has a frequency of particles having diameters not smaller than 150 nm, of not more than 2% by volume in the insoluble material.