Patent application number | Description | Published |
20080231650 | BACK PRESSURE ADJUSTMENT APPARATUS FOR LIQUID EJECTION HEAD - The back pressure adjustment apparatus for a liquid ejection head has: a container having a liquid accommodating chamber which is connected to the liquid ejection head and accommodates liquid to be supplied to the liquid ejection head, and a gas accommodating chamber which accommodates gas; a movable film which separates the liquid accommodating chamber and the gas accommodating chamber, and forms a portion of whole walls of the liquid accommodating chamber; and a pressure adjustment device which causes all or a portion of the movable film to deform so as to adjust pressure of the liquid accommodated in the liquid accommodating chamber. | 09-25-2008 |
20090231377 | INKJET RECORDING APPARATUS AND INKJET RECORDING METHOD - An inkjet recording apparatus has: an inkjet head which ejects ink so as to record an image on a recording surface of a recording medium; a drum-shaped member which includes a drum, holds an edge of the recording medium, and conveys the recording medium in close contact with a circumferential surface of the drum; an intermediate conveyance body which holds an edge of the recording medium while moving the recording medium in rotation, and transfers the recording medium to the drum-shaped member; and a conveyance guide which guides a non-recording surface of the recording medium which is moved in rotation by the intermediate conveyance body, wherein the conveyance guide has a back tension application device which produces a force to act on the recording medium in an opposite direction to a direction of movement of the recording medium. | 09-17-2009 |
20090231407 | INKJET RECORDING APPARATUS AND INKJET RECORDING METHOD - An inkjet recording apparatus which ejects an ink so as to record an image on a recording medium has: a conveyance device which conveys a recording medium; a liquid deposition device which deposits a liquid onto a recording surface of the recording medium which is conveyed by the conveyance device; an intermediate conveyance body which moves the recording medium in rotation onto the recording surface of which the liquid has been deposited by the liquid deposition device while holding an edge of the recording medium; a conveyance guide which guides a non-recording surface of the recording medium which is moved in rotation by the intermediate conveyance body; and a pressure application device which applies a pressure differential between the recording surface and the non-recording surface of the recording medium which is moved in rotation by the intermediate conveyance body. | 09-17-2009 |
20090244237 | INKJET RECORDING APPARATUS AND INKJET RECORDING METHOD - The inkjet recording apparatus for recording an image on a recording surface of a recording medium, includes: an inkjet head which ejects an ink; a first drum-shaped member for printing which has a first drum circumferential surface opposing the inkjet head, and holds and rotationally conveys the recording medium in such a manner that the ink is deposited onto the recording medium by using the inkjet head; and a second drum-shaped member for drying which is disposed downstream of the first drum-shaped member, has a second drum circumferential surface opposing a drying device which dries a solvent of the ink, and holds and rotationally conveys the recording medium. | 10-01-2009 |
20090311426 | INKJET RECORDING METHOD AND APPARATUS - The inkjet recording method includes: a treatment liquid depositing step of applying treatment liquid onto a recording medium while holding the recording medium on a circumferential surface of a treatment liquid drum and conveying the recording medium by rotating the treatment liquid drum, and drying at least a portion of a solvent in the treatment liquid; an image forming step of ejecting ink from a line type inkjet head to deposit the ink onto the recording medium on which the treatment liquid has been deposited, while holding the recording medium on a circumferential surface of an image formation drum and conveying the recording medium by rotating the image formation drum, the ink containing at least a resin dispersant (A), a pigment (B) that is dispersed by the resin dispersant (A), self-dispersible polymer micro-particles (C) and an aqueous liquid medium (D), the ink having one of a solid component that is aggregated upon making contact with the treatment liquid and a solid component that is precipitated upon making contact with the treatment liquid; and a drying step of drying a solvent in the ink having been deposited on the recording medium while holding the recording medium on a circumferential surface of a drying drum and conveying the recording medium by rotating the drying drum. | 12-17-2009 |
20110001785 | Image forming system - An image forming system includes: a recording medium which has a roll shape and is manufactured so as to have both edges curling in a direction opposite to a roll surface of the recording medium; an image forming device which forms an image on the recording medium conveyed along a conveyance path; a recording medium feeder in which the recording medium having the roll shape is loaded in such a manner that the recording medium having the roll shape is conveyed while the roll surface of the recording medium faces the image forming device; a rear end cutter for cutting the recording medium having the roll shape on which the image forming device has formed an image on the roll surface at a position posterior to the formed image; a reverse conveyance path in which the recording medium, on the roll surface of which the image has been formed and which has been cut by the rear end cutter, is reversed in terms of front and back surfaces of the recording medium; and a decurl device for reversing a curl direction of the recording medium which has been reversed in terms of the front and back surfaces and is conveyed in the reverse conveyance path, wherein images are formed on the front and back surfaces of the recording medium by forming an image on the front surface of the recording medium having the roll shape, cutting the recording medium at the position posterior to the image, reversing the recording medium in terms of the front and back surfaces, reversing curl of the edges of the recording medium in an opposite direction by the decurl device, and then forming an image on the back surface of the recording medium. | 01-06-2011 |
Patent application number | Description | Published |
20100079531 | Image forming apparatus - An image forming apparatus including a formation unit that forms an image on a first surface of a recording medium; a suction conveyance unit that conveys the recording medium to the formation unit while suctioning the recording medium onto a guide surface; a switchback conveyance unit that inverts the recording medium on whose first surface an image has been formed to allow a second surface of the recording medium to be used as an image formation surface, and conveys the recording medium to the suction conveyance unit; and a conditioning unit that conditions the first surface of the recording medium, wherein the conditioning unit controls a rate of moisture absorption of a surface of the recording medium and causes the recording medium that is fed to the suction conveyance unit via the switchback conveyance unit to bend such that the center portion thereof separates from the guide surface. | 04-01-2010 |
20100141726 | IMAGE FORMING METHOD - An image forming method includes: moisture-controlling one surface of an inkjet recording medium having an air permeability of 300 seconds or more; feeding the moisture-controlled inkjet recording medium onto a conveyance path in a state where the moisture-controlled inkjet recording medium is curled such that a surface of the moisture-controlled inkjet recording medium that is curved inwards faces the conveyance path for conveying the inkjet recording medium; conveying the fed inkjet recording medium while adhering the inkjet recording medium by suction onto the conveyance path; and forming an image by applying ink by an inkjet method on the inkjet recording medium adhered by suction to the conveyance path. | 06-10-2010 |
20100238250 | Image forming device - An image forming device provided with: a recording head that renders an image by ejecting liquid droplets onto a recording medium; an attraction image rendering section having a liquid droplet reception flat portion disposed facing the recording head, the attraction image rendering section attracting the recording medium onto the flat portion and maintaining the flatness of the recording medium; an upstream side conveying section that feeds the recording medium out toward the attraction image rendering section; and a reverse-feed-prevented conveying roller disposed at the downstream side of the attraction image rendering section, the reverse-feed-prevented conveying roller being capable of friction-pushed rotation toward the conveying direction downstream side, nipping the recording medium and feeding the recording medium toward the conveying direction downstream side, and prevented from rotation toward the conveying direction upstream side. | 09-23-2010 |
20110242184 | IMAGE FORMING DEVICE - An image forming device including a droplet ejection head, a medium temperature detection unit, a storage unit and a medium temperature control unit. The droplet ejection head ejects droplets including a volatile component at a recording medium. The medium temperature detection unit detects a temperature of the recording medium. The storage unit stores impact area information representing a relationship between temperatures of the recording medium and impact areas of droplets impacting on the recording medium. On the basis of the temperature of the recording medium detected by the medium temperature detection unit and the impact area information stored by the storage unit, the medium temperature control unit controls the temperature of the recording medium such that the impact areas of the droplets impacting on the recording medium become a pre-specified impact area. | 10-06-2011 |
20120075382 | IMAGE FORMING APPARATUS - An image forming apparatus which includes a line head having a nozzle group in a two-dimensional matrix configuration, or a line head in which a plurality of head modules are joined together in a staggered matrix arrangement. | 03-29-2012 |
20130335469 | INKJET RECORDING APPARATUS AND METHOD FOR CONTROLLING THE SAME - In an inkjet head which has nozzle rows having nozzles each of which ejects curable inks cured by imparted activation energy and which are arranged in a first direction at a pitch P, the nozzle rows being N (N≧5) nozzle rows of every color which eject, respectively, thick inks of four colors including cyan, magenta, yellow and black, and at least one light ink among light inks similar in color tone to the thick inks, the nozzles in each of the nozzle rows are arranged so as to be shifted by P/N from each other in a first direction, a nozzle of an ink with lowest cure sensitivity is arranged on the most upstream side in a direction of relative movement of a recording medium in the first direction, and further the nozzle of light ink is arranged in between the nozzles of two different thick inks. | 12-19-2013 |
20140062076 | INKJET RECORDING METHOD AND PRINTED MATERIAL - An inkjet recording method of the present invention includes preparing an inkjet recording apparatus having an inkjet head that has N (N≧4) nozzle arrays, so as to respectively discharge inks of at least four colors of cyan, magenta, yellow and black, having nozzles arranged in a first direction at a predetermined pitch P for discharging a curable ink which is cured by providing active energy, each of the nozzle arrays is arranged to be shifted in the first direction so as to have distances of more than 0 among each virtual line extending from each nozzle in a second direction perpendicular to the first direction, in which the viscosity of any of the respective inks at 25° C. is 10 to 30 mPa·s. | 03-06-2014 |
Patent application number | Description | Published |
20090291215 | IMAGE FORMING METHOD - The method forms an image by directly depositing aqueous ink ejected from an inkjet recording apparatus onto a recording medium. The method comprises: using, as the inkjet recording apparatus, an apparatus including: an image formation unit having a line head type inkjet head disposed opposite a circumferential surface of an image formation drum, the inkjet head depositing the aqueous ink onto the recording medium while the recording medium is held and conveyed in rotation on the circumferential surface of the image formation drum; and a drying unit arranged on a downstream side of the image formation unit, the drying unit having a drying device disposed opposite a circumferential surface of a drying drum, the drying device drying a solvent in the aqueous ink deposited on the recording medium, the drying unit drying the solvent by means of the drying device while the recording medium is held and conveyed in rotation on the circumferential surface of the drying drum; using, as the recording medium, a special paper which is a recording medium successively laminated from a base paper, a first layer containing a binder and a second layer containing a white pigment, the base paper with the first layer provided thereon having a Cobb water absorbency of not higher than 5.0 g/m | 11-26-2009 |
20100079530 | Image forming apparatus - An image forming apparatus includes a formation unit that forms an image on a recording medium by inkjetting, a suction conveyance unit that conveys the recording medium to the formation unit while adhering the recording medium by suction onto a guide surface which is a conveyance path, and a conditioning unit that conditions one surface of the recording medium before feeding the recording medium to the suction conveyance unit, wherein the conditioning unit controls a rate of moisture absorption of the one surface of the recording medium and causes the recording medium to bend such that the center portion of the recording medium separate from the guide surface of the suction conveyance unit. | 04-01-2010 |
20120120168 | INKJET RECORDING APPARATUS AND IMAGE FORMING METHOD - An inkjet recording apparatus and an image forming method in which ink curing defects caused by differences in the activation energy absorption characteristics due to differences in the inks are avoided, and a desirable curing process can be achieved. | 05-17-2012 |
20120281049 | INKJET RECORDING APPARATUS AND IMAGE FORMING METHOD - An inkjet recording apparatus includes: an image forming device; a scanning device; a relative movement device which causes relative movement between the recording medium and the image forming device; a first active light beam irradiation device which radiates an active light beam onto the ink to provisionally cure the ink; a second active light beam irradiation device which radiates an active light beam having an irradiation light quantity for fully curing the ink; an ejection control device which controls ink ejection from the nozzle row, for each of a plurality of nozzle groups; and an irradiation control device which controls irradiation of the active light beam of the first active light beam irradiation device, with respect to each of a plurality of irradiation units, according to an irradiation light quantity of the active light beam of the first active light beam irradiation device. | 11-08-2012 |