Patent application number | Description | Published |
20080198212 | INK-JET RECORDING APPARATUS, METHOD OF REMOVING AIR OF INK-JET RECORDING APPARATUS AND REMOVING AIR DEVICE - An air removing device is connected to a tank to contain ink through a first supply tube, and an ink-jet head is connected to the air removing device through a second supply tube. The first supply tube and ink-jet head are heated and controlled. Air dissolved in ink is sucked out through a hollow fiber membrane provided in a housing by operating a vacuum pump by supplying ink to the hollow fiber membrane while heating and controlling atmosphere in the housing. Thus, air dissolved in ink is removed, and ink heated to a temperature suitable for ejection is supplied to the ink-jet head. | 08-21-2008 |
20100171782 | IMAGE RECORDING APPARATUS - An image recording apparatus includes at least one ink jet head having a plurality of ejection ports arranged herein to eject droplets to a recording medium, a conveyance section including a conveyance surface for conveying the recording medium and to convey the recording medium in a direction different from an arrangement direction of the respective ejection ports, a suction force generation section to generate a suction force to adsorb the recording medium onto the conveyance surface, a thickness detection section to detect a thickness of the recording medium, and a control section to suppress cockling generated in the recording medium according to the thickness of the recording medium. | 07-08-2010 |
20100171784 | IMAGE RECORDING APPARATUS - An image recording apparatus includes a recording head and a first conveyance unit. An applying unit applies the recording medium on the first conveyance unit with treatment liquid. One end of a second conveyance unit is connected on an upstream side from the applying unit disposed on the first conveyance unit and the other end is connected on a downstream side from the applying unit disposed on the first conveyance unit and on the upstream side from the recording head in the conveyance direction, the second conveyance unit conveying the recording medium. A conveyance switching unit is disposed on the one end of the second conveyance unit and switches conveyance of the recording medium to the applying unit side of the first conveyance unit or to the second conveyance unit side according to a content of recording data. | 07-08-2010 |
20100171787 | IMAGE RECORDING APPARATUS - An image recording apparatus includes a carrying unit that carries a recording medium in a carrying direction, and a recording head that ejects ink to the recording medium carried by the carrying unit to perform recording. An application unit is provided on an upstream side of a carrying direction from the recording head in the carrying unit and supplies a treatment liquid to predetermined division application ranges which are divided in a direction perpendicular to the carrying direction of the recording medium depending on a size of the recording medium. | 07-08-2010 |
20100171804 | IMAGE RECORDING APPARATUS - An image recording apparatus includes a conveyance unit which includes a conveyance belt and an air suction unit for sucking air through the conveyance belt to adsorb a recording medium onto the conveyance belt. A recording head ejects ink to carry out recording on the recording medium conveyed by the conveyance unit. An adsorption force adjusting unit adjusts the adsorption force for the recording medium on the conveyance belt, which occurs by sucking air, according to the size of the recording medium. | 07-08-2010 |
20110043562 | INKJET RECORDING APPARATUS - According to one embodiment, an inkjet recording apparatus includes a sensor, a first controller and a second controller. The sensor is provided upstream of an inkjet head in a paper transport direction and detects a state of an image forming surface of a paper. The first controller determines whether the image forming surface subjected to the state detected by the sensor is printed with a coloring material other than inkjet inks. The second controller controls to discharge the paper without image formation on the image forming surface with the inkjet head if the image forming surface is printed with the coloring material other than the inkjet inks. | 02-24-2011 |
20110050763 | IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - According to one embodiment, an image processing apparatus includes a detecting unit, a determining unit, and a correcting unit. The detecting unit detects an overlapping portion of a first image printed on a first side of a sheet and a second image printed on a second side opposite to the first side. The determining unit determines whether the detected overlapping portion of the first image and the second image is equal to or larger than a predetermined area. The correcting unit corrects, if the overlapping portion is equal to or larger than the predetermined area, the density of one of the first image and the second image. | 03-03-2011 |
20110050778 | INK JET RECORDING APPARATUS AND SHEET FEEDING METHOD OF INK JET RECORDING APPARATUS - According to one embodiment, an ink jet recording apparatus includes a first ink jet head, a second ink jet head, a main feeding passage, a first roundabout feeding passage, and a controller. The first ink jet head forms an image on a medium. The second ink jet head forms an image on the medium. The main feeding passage feeds the medium so that the first ink jet head and the second ink jet head form an image on the medium. The first roundabout feeding passage feeds the medium without allowing the medium to face the first ink jet head. The controller controls so as to feed the medium through the first roundabout feeding passage if the first ink jet head is unusable. | 03-03-2011 |
20110199416 | IMAGE FORMING APPARATUS AND METHOD OF INKJET HAVING HUMIDITY ADJUSTMENT MECHANISM - According to one embodiment, an ink-jet image forming apparatus includes an ink-jet head which ejects water-based ink and form an image on a surface of a recording medium, a medium conveying unit which conveys the recording medium, a solution applying unit arranged further on an upstream side in a recording medium conveying direction than the ink-jet head and which applies water solution to a surface of the recording medium on which an image is formed, and a controller configured to calculate an application amount of the water solution to apply the water solution to the recording medium at 1% to 6% of weight of the recording medium and control an application operation to the recording medium. | 08-18-2011 |
20110199418 | IMAGE FORMING APPARATUS AND EJECTION LIQUID CIRCULATING METHOD - The image forming apparatus includes an upstream side chamber arranged further on an upstream side with respect to an ink flowing direction than a head in a circulating path and configured to temporarily store the ejection liquid that should be supplied to the head through the circulating path, a downstream side chamber arranged further on a downstream side than the head and further on the upstream side than the upstream side chamber in the circulating path and configured to temporarily store the ejection liquid collected from the head, and a pressure-difference adjusting mechanism configured to form a first pressure state in which the pressure in the downstream side chamber is lower than the pressure in the upstream side chamber and the head and a second pressure state in which the pressure in the upstream side chamber is lower than the pressure in the downstream side chamber. | 08-18-2011 |
20110234672 | INKJET IMAGE FORMING APPARATUS AND INKJET IMAGE FORMING METHOD - According to one embodiment, an inkjet image forming apparatus includes an inkjet head which ejects an aqueous ink, a recording medium reversing mechanism for reversing a recording medium, and a controller. The controller performs control such that if a both-side recording mode is designated, the location information of an overlapping region of images to be recorded on the front surface and the rear surface is detected, based on the detected recording image location information on the front surface and the rear surface, the density of the images to be recorded at the location on the front surface and the rear surface is determined, and if the image density on one surface is higher than the image density on the other surface, the image density at the location on the one surface is reduced, and controls the inkjet head based on the control. | 09-29-2011 |
20110259238 | AQUEOUS PIGMENT INK - According to one embodiment, an aqueous pigment ink includes water, a pigment, and a water-soluble polymeric compound. The pigment is contained in the aqueous pigment ink in an amount of less than 5 wt %. The aqueous pigment ink has viscosities (mPa·s) measured at 25° C. using a cone-plate type viscometer and satisfying the following relationships: | 10-27-2011 |
20110261107 | AQUEOUS INKJET INK - According to one embodiment, an aqueous inkjet ink includes water and a pigment. The pigment is contained in the aqueous inkjet ink in an amount of less than 5 wt %. The queous inkjet ink has viscosities (mPa·s) measured at 25° C. using a cone-plate type viscometer and satisfying the following relationships: | 10-27-2011 |
20110273515 | AQUEOUS INKJET INK - According to one embodiment, an aqueous inkjet ink includes a dispersion medium that contains water and a water-soluble polyhydric alcohol having a weight average molecular weight of 400 or more, and a pigment. The pigment accounts for less than 5 mass % of the total amount of the aqueous inkjet ink. The aqueous inkjet ink has viscosities (mPa·s) measured using a cone-plate type viscometer at 20 rpm and satisfying the following relationships: | 11-10-2011 |
20110279514 | AQUEOUS INKJET INK - According to one embodiment, an aqueous inkjet ink includes water in an amount of from 15 to 50% by mass of the total amount of the ink, a glycol mixture in an amount of from 34 to 80% by mass of the total amount of the ink, and a pigment in an amount of from 2 to 20% by mass of the total amount of the ink. The glycol mixture contains 40 to 70% by mass of propylene glycol, with the remainder being isoprene glycol. | 11-17-2011 |
20110279515 | AQUEOUS INKJET INK - According to one embodiment, an aqueous inkjet ink includes a color material, water as a first liquid, propylene glycol as a second liquid, and a compound represented by the following general formula (PEG) or a compound represented by the following general formula (PGC) as a third liquid. The aqueous inkjet ink has a water activity of 0.85 or less. | 11-17-2011 |
20110292103 | IMAGE FORMING APPARATUS AND METHOD OF INKJET HAVING HUMIDITY ADJUSTMENT MECHANISM - According to one embodiment, an inkjet image forming apparatus includes an inkjet head configured to discharge water-based ink and form an image on a surface of a recording medium, a medium conveyance part configured to convey the recording medium, a solution imparting part that is disposed upstream of the inkjet head in a recording medium conveyance direction and uses another inkjet head to impart a solution to the surface of the recording medium on which the image is formed, and a controller configured to calculate an imparting amount of the solution to be imparted to the recording medium and control an imparting operation to the recording medium. | 12-01-2011 |
20110310157 | INKJET IMAGE FORMING APPARATUS AND INKJET IMAGE FORMING METHOD - According to one embodiment, an inkjet image forming apparatus includes a transport section configured to adsorb a recording medium by suction to transport the recording medium under inkjet heads, and a controller configured to perform control in a manner that an adsorption force to the recording medium if the image is formed on a second surface of the recording medium is larger than an adsorption force to the recording medium if the image is formed on a first surface of the recording medium. | 12-22-2011 |
20120007918 | INKJET RECORDING HEAD, INKJET PRINTER, AND INKJET RECORDING METHOD - According to one embodiment, an inkjet recording head includes an orifice member, a first cover member and a second cover member. The orifice member includes an ejection hole which ejects ink. The first cover member includes a peripheral surface, which surrounds the outer peripheral surface of the orifice member, one end face arranged near the orifice member, and an other end and an ink regulating section formed on the peripheral surface and suppresses movement of ink. The second cover member is arranged to extend to the other end of the peripheral surface of the first cover member. | 01-12-2012 |
20120013676 | AQUEOUS INKJET INK - According to one embodiment, an aqueous inkjet ink includes a pigment in an amount of 2 to 20% by mass of the total amount of the aqueous inkjet ink, and a dispersion medium in which the pigment is dispersed. The dispersion medium contains water in the amount of 53 to 94% by mass, with the remainder of the dispersion medium being a compound represented by the following general formula 1. The water accounts for 50 to 80% by mass of the total amount of the aqueous inkjet ink. | 01-19-2012 |
20120033010 | AQUEOUS INKJET INK - According to one embodiment, an aqueous inkjet ink includes a color material in an amount of 2 to 20% by mass of the total amount of ink, water in an amount of 41 to 70% by mass of the total amount, and a water-soluble organic solvent in an amount of 20 to 53% by mass of the total amount. The solvent contains a compound represented by the following general formula 1 which accounts for 20 to 50% by mass of the total amount of ink. When the amount of compound is equal to the amount of solvent, the total amount of solvent is the compound, and the sum of the amounts of the color material, the water, and the solvent is 100% by mass or less of the ink. | 02-09-2012 |
20120062644 | AQUEOUS INKJET INK - According to one embodiment, an aqueous inkjet ink includes a color material, water in an amount of 50-70% by mass of the total amount of the ink, and a water-soluble organic solvent in an amount of 29-49% by mass of the total amount. The soluble organic solvent contains a compound represented by the following general formula 1 which accounts for 10-36% by mass of the total amount of ink. When the amount of the compound is equal to the amount of the solvent, the total amount of the solvent is the compound. The sum of the amounts of the color material, the water, and the water-soluble organic solvent is 100% by mass or less of the ink. | 03-15-2012 |
20120062645 | AQUEOUS INKJET INK - According to one embodiment, an aqueous inkjet ink includes a color material, water in an amount of from 50-70% by mass of the total amount of the ink, and a water-soluble organic solvent in an amount of from 29-49% by mass of the total amount. The water-soluble organic solvent contains a compound represented by the following general formula 1, and the compound represented by the following general formula 1 accounts for 10-35% by mass of the total amount of the ink. The sum of the amounts of the color material, the water, and the water-soluble organic solvent is 100% by mass or less of the ink. | 03-15-2012 |
20130293608 | INK-JET PRINTER AND CONTROL METHOD FOR INK-JET PRINTER - In accordance with an embodiment, an ink-jet printer includes a first black record head, a second black record head, a color record head, a black maintenance unit, a color maintenance unit and a controller. The black maintenance unit configured to maintain the first black record head. The color maintenance unit configured to maintain the second black record head and the color record head. The controller executes the maintenance of the black maintenance unit and the maintenance of the color maintenance unit at different timings. | 11-07-2013 |