Patent application number | Description | Published |
20080292367 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS - A developing device and an image forming apparatus which can form a printing image having high resolution and a high quality level, while resolving various problems resulted from the use of small particle size toner particles are provided. The developing device includes a toner constituted of resin base particles containing a coloring agent and a binder resin, and silicone oil and/or fluoro oil added to the resin base particles, a toner receiving portion for receiving the toner, and a developing roller having an outer peripheral surface and an irregularity section for carrying the toner, the irregularity section formed on the outer peripheral surface and including a plurality of depression portions and/or protrusion portions provided regularly and uniformly, wherein an average particle size of the resin base particles in volume basis is in the range of 2 to 4 μm, and an added amount of the silicone oil and/or fluoro oil to the resin base particles is in the range of 0.05 to 2 mass %. | 11-27-2008 |
20100261110 | TONER, TONER PRODUCTION METHOD, AND IMAGE FORMING DEVICE USING THE SAME - A toner, has a number mode diameter of 3 μm or more and 6 μm or lower and a particle size distribution of a toner including an externally-applied agent in the range of 0.6 μm to 400 μm in which the number frequency of a toner smaller than the number mode diameter is smaller than the number frequency of a toner equal to or larger than the number mode diameter. | 10-14-2010 |
20110234685 | INK JET RECORDING APPARATUS - An ink jet recording apparatus including an ink jet head for ejecting a water-based ink from a nozzle onto a recording medium, wherein the water-based ink contains a fatty acid and a fatty acid potassium or sodium salt with which the fatty acid is emulsified and dispersed in water. | 09-29-2011 |
20110234686 | INK JET RECORDING APPARATUS - An ink jet recording apparatus including an ink jet head for ejecting a water-based ink while moving at a speed of 0.5 m/s or more relative to a recording medium, wherein the water-based ink contains a fatty acid and a volatile alcohol, the volatile alcohol being used to emulsify the fatty acid and disperse the fatty acid in water and having a higher vapor pressure than water at 20° C. | 09-29-2011 |
20110234695 | INK JET RECORDING DEVICE - An ink jet recording device is provided which includes an ink jet head which has a nozzle surface where a plurality of nozzle opening ends are arranged and which ejects water-based ink from the nozzles to a recording medium and a wiping device that executes a wiping operation where the nozzle surface and a wiping member are brought into contact and the nozzle surface is wiped, where oleic acid and a dispersant for dispersing the oleic acid into water by emulsifying the oleic acid are added to the water-based ink. | 09-29-2011 |
20120162307 | PIGMENT INK, INK JET RECORDING APPARATUS, AND INK JET RECORDING METHOD - A pigment ink includes an acetylene glycol or 2-ethyl-1,3-hexanediol, and an unsaturated fatty acid, an amino acid, an alkali metal hydroxide and an amine. | 06-28-2012 |
20120262516 | INK JET RECORDING AQUEOUS PIGMENT INK - An ink jet recording aqueous pigment ink contains a self-dispersing pigment, a quaternary amino acid, a non-polymeric, nonionic material having a melting point of 40° C. or more, and at least one of trialkylamine and trialkanolamine. The content of the non-polymeric, nonionic material is 3% to 15% by mass relative to the total mass of the ink jet recording aqueous pigment ink. | 10-18-2012 |
20150175825 | INK COMPOSITION FOR INK JET RECORDING - An ink composition for ink jet recording according to the invention contains water, a coloring material, and three or more kinds of acetylene glycol-based surfactant selected from acetylene glycol represented by the following general formula (1) and an ethylene oxide adduct of acetylene glycol represented by the following general formula (2), and a total content of the acetylene glycol-based surfactant is 0.1% by mass to 3% by mass with respect to the total mass of the ink composition. | 06-25-2015 |