Abstract: Disclosed is an image recording method employing a photocurable ink containing an oxetane compound with an oxetane ring having a substituent at the 2-position, the method comprising the steps of (a) ejecting the photocurable ink as ink droplets from an ink ejecting section of a recording head onto a recording medium, and (b) exposing, to ultraviolet light, the photocurable ink ejected onto the recording medium, wherein the ink ejecting section is heated to a temperature of 40 to 80 ° C. and the recording medium is heated to a temperature equal to or lower than that of the ink ejecting section, so that the difference in temperature between the ink ejecting section and the recording medium is not more than 40 ° C.

Abstract: An ink jet printer for forming an image on a recording medium with an active-ray-setting ink, which is hardened by an irradiation of active rays; having a plurality of heads, each of the plurality of heads having a plurality of jet openings for jetting the active-ray-setting ink as ink drops towards the recording medium; and a plurality of active ray sources of irradiate active rays for hardening the ink drops of the active-ray-setting ink landed on the recording medium, wherein each of the plurality of heads and each of the plurality of active ray sources are arranged alternately.

Abstract: An inkjet printer for recording an image on a recording medium with an active ray cure ink to be cured by exposure to an active ray, having a head for emitting the active ray cure ink onto a recording medium, an active ray source for emitting the active ray wherein the active ray source is arranged at the rear of the head in the direction of a relative movement of the head with respect to the recording medium during emission of ink, and in a same side where the head is provided with respect to the recording medium, and a shield member for preventing the active ray emitted by the active ray source from directly or indirectly entering into a trajectory formed by an ink particle emitted from the head and reaching the recording medium.

Abstract: An ink-jet printer for applying a photocurable ink, including: an ink-jet head having a plurality of nozzles to jet droplets of the photocurable ink onto a recording material; a ultraviolet ray radiation source; and a heating device for the recording material, wherein the radiation source produces an integrated illuminance of 0.

Abstract: A photocurable ink for ink-jet recording, comprising an oxetane compound having a substituent at the 2-position of the molecule.

Abstract: An ink-jet image forming method comprising: jetting ultraviolet ray-curable ink from an ink-jet head onto a recording substrate while conveying the recording substrate; and exposing the jetted ink on the recording substrate to ultraviolet rays irradiated by an ultraviolet ray-emitting light source, wherein in the exposing step, a surface temperature of the ultraviolet ray-emitting light source is not more that 60° C.

Abstract: The invention relates to an ink-jet image forming method comprising: jetting UV-hardenable ink onto a substrate; and irradiating UV light to the jetted UV-hardenable ink on the substrate with a UV light source to form an image, wherein an ozone concentration above an irradiated surface of the substrate during the irradiating step is not more than 5 ppm by volume.

Abstract: The present invention relates to an inkjet image forming method comprising: jetting an ink hardenable by an irridation of an active ray from an inkjet head on a recording material while conveying the recording material; and irridating the active ray on the jetted recording material, wherein a total of the input electric power of a light source of the active ray of light is 0.05-20 W/cm, and the inkjet head have plural nozzles arrayed in a direction perpendicular to a direction, which the recording material is conveyed.

Abstract: An ink jet printer for forming an image on a recording medium with an active-ray-setting ink, which is hardened by an irradiation of active rays; having a plurality of heads, each of the plurality of heads having a plurality of jet openings for jetting the active-ray-setting ink as ink drops towards the recording medium; and a plurality of active ray sources of irradiate active rays for hardening the ink drops of the active-ray-setting ink landed on the recording medium, wherein each of the plurality of heads and each of the plurality of active ray sources are arranged alternately.

Abstract: An inkjet printer for recording an image on a recording medium with an active ray cure ink to be cured by exposure to an active ray, having a head for emitting the active ray cure ink onto a recording medium, an active ray source for emitting the active ray wherein the active ray source is arranged at the rear of the head in the direction of a relative movement of the head with respect to the recording medium during emission of ink, and in a same side where the head is provided with respect to the recording medium, and a shield member for preventing the active ray emitted by the active ray source from directly or indirectly entering into a trajectory formed by an ink particle emitted from the head and reaching the recording medium.

Abstract: Disclosed is a method of processing an exposed presensitized planographic printing plate employing an automatic processor, the method comprising the steps of developing the exposed presensitized planographic printing plate with a developer; and washing the developed printing plate with a washing water, wherein the ratio W/D of the washing time W to the cross-over time D taken from completion of the developing step to the beginning of the washing step is 3 or more.