| Patent application number | Description | Published |
|---|
| 20080225080 | INK-JET RECORDING APPARATUS - An ink-jet recording apparatus in which a liquid functional material is ejected onto a recording medium by at least one ink-jet head including a plurality of ejection nozzles to form an image, and the image is fixed by irradiation from an active-energy ray irradiation source, wherein the apparatus comprises at least one pair of positive and negative electrodes which are provided at an upstream position on a side of the head with respect to the active-energy ray irradiation source, and which have a potential difference of 50 V or more. | 09-18-2008 |
| 20080305262 | INK COMPOSITION, INK SET AND INKJET RECORDING METHOD - An ink composition includes: first particles which are insoluble and dispersed in an aqueous dispersion medium, a polarity of the first particles being one of positive and negative; and second particles which are insoluble and dispersed in the aqueous dispersion medium, the second particles including both a cationic group and an anionic group, the second particles having a zeta potential that changes along with a change in pH of the aqueous dispersion medium, percentage of a water-soluble component in the second particles being not higher than 5% by mass. | 12-11-2008 |
| 20090202723 | INKJET RECORDING LIQUID AND INKJET RECORDING METHOD - An inkjet recording liquid includes: water; a colorant; a first water-soluble organic solvent having a structure represented by the following Formula (1), an SP value of 27.5 or less, and a molecular weight of 100 to 210; and a second water-soluble organic solvent having a structure represented by the following Formula (2), an SP value of 27.5 or less, and a molecular weight of 240 to 2000, wherein the mass ratio of the content of the first water-soluble organic solvent to the content of the second water-soluble organic solvent is from 1:3 to 3:1: | 08-13-2009 |
| 20090202724 | INK COMPOSITION, INK SET AND IMAGE FORMING METHOD - An ink composition, including: a water-soluble solvent A; a pigment; and water. The water-soluble solvent A contains at least a water-soluble solvent having an SP value of 27.5 or less at an amount of 90 mass % or more and a compound represented by the following Formula (1), wherein the compound represented by Formula (1) is the same as or different from the water-soluble solvent having an SP value of 27.5 or less: | 08-13-2009 |
| 20090235842 | INKJET RECORDING LIQUID - An inkjet recording liquid includes: water; at least one colorant; and a water-soluble organic solvent having an SP (solubility parameter) value of 27.5 or less at a content of 70 mass % or more with respect to the total amount of water-soluble organic solvent, wherein the water-soluble organic solvent having an SP value of 27.5 or less includes at least one water-soluble organic solvent having a molecular weight of from 240 to 1400 and represented by the following Formula (1) at a content of 70 mass % or more with respect to the amount of the water-soluble organic solvent having an SP value of 27.5 or less. | 09-24-2009 |
| 20100079540 | MAINTENANCE METHOD OF LIQUID EJECTION HEAD AND LIQUID EJECTION APPARATUS - A maintenance method of a liquid ejection head including a nozzle forming surface where a plurality of nozzles having a polygonal planar shape including a plurality of corners which each have two sides and an angle between the two sides are formed, includes the step of causing a relative movement of a sweep member and the head so as to sweep the nozzle forming surface of the liquid ejection head in such a manner that the sweep member is moved in a direction making an angle within π/8 radian with respect to a direction in which any of the sides extends. | 04-01-2010 |
| 20100231623 | Image Forming Apparatus And Mist Recovery Method - The image forming apparatus includes: an inkjet head of an on-demand ejection type having a nozzle plate in which a nozzle electrode is arranged in a vicinity of a nozzle through which liquid is ejected; and a voltage application device which makes a polarity of the nozzle electrode one of positive and negative in accordance with a start of an ejection operation of the liquid, and then switches the polarity of the nozzle electrode to an opposite polarity to the one of positive and negative in accordance with a timing of ejecting the liquid through the nozzle. | 09-16-2010 |
