Patent application number | Description | Published |
20080316280 | Liquid discharging head, method of manufacturing liquid discharging head, and image forming apparatus - A liquid discharging head includes: a plurality of nozzles that discharge liquid droplets; and a plurality of piezoelectric elements that generate pressure for discharging liquid droplets from the respective nozzles, wherein the piezoelectric elements are performed with repolarization process to set non-uniformity of the droplet discharging characteristics of the nozzles to be in a predetermined range by combining adjustment of a polarization sensitivity and adjustment of a polarization voltage for each of the piezoelectric elements. | 12-25-2008 |
20090244202 | INK JET HEAD MANUFACTURING DEVICE, INK JET HEAD MANUFACTURING METHOD, AND INK JET DEVICE - In an ink jet head manufacturing device, first and second diodes are arranged on a path extending from a gate of a control unit to an individual electrode of an ink-pressure control part in an ink jet head, the first diode allowing a current from the individual electrode of the ink-pressure control part to flow into a first wiring, and the second diode allowing a current from a second wiring to flow into the individual electrode of the ink-pressure control part. A short-circuit unit is arranged to short-circuit the first wiring and the second wiring when depolarization or polarization of the ink-pressure control part is performed. | 10-01-2009 |
20110061216 | LIQUID DISCHARGING HEAD, METHOD OF MANUFACTURING LIQUID DISCHARGING HEAD, AND IMAGE FORMING APPARATUS - A method for manufacturing a liquid discharging head, the method including forming a plurality of nozzles that discharge liquid droplets, forming a plurality of piezoelectric elements that generate pressure for discharging liquid droplets from the respective nozzles; and performing a repolarization process on the piezoelectric elements to set non-uniformity of the droplet discharging characteristics of the nozzles to be in a predetermined range by combining adjustment of a polarization sensitivity and adjustment of a polarization voltage for each of the piezoelectric elements. | 03-17-2011 |
Patent application number | Description | Published |
20090156823 | Sulfonamide compound and crystal thereof - (S)-1-(4-Chloro-5-isoquinolinesulfonyl)-3-(methylamino)pyrrolidine monohydrochloride and a crystal thereof, and a crystal of the aforementioned monohydrochloride having a major peak or peaks at one or more positions selected from the group consisting of positions where 2θs are about 13.9°, 21.5°, 21.7°, 22.4°, 22.8°, 24.5° and 35.0° in a powder X-ray diffraction spectrum, which have excellent properties as active ingredient of a medicament for prophylactic and/or therapeutic treatment of glaucoma and the like. | 06-18-2009 |
20100222404 | INDAZOLE DERIVATIVE DIHYDROCHLORIDE - There are provided (R)—N-[3-[2-[2-(3-methylindazol-6-yloxy)ethylamino]-1-hydroxyethyl]phenyl]methanesulfonamide dihydrochloride and a crystal thereof, and a crystal of the dihydrochloride salt having one or more major peaks at 2θ selected from the group consisting of approximately 12.8°, 21.8° and 25.0° in the powder X-ray diffraction spectrum. | 09-02-2010 |
20120270898 | SULFONAMIDE COMPOUND AND CRYSTAL THEREOF - (S)-1-(4-Chloro-5-isoquinolinesulfonyl)-3-(methylamino)pyrrolidine monohydrochloride and a crystal thereof, and a crystal of the aforementioned monohydrochloride having a major peak or peaks at one or more positions selected from the group consisting of positions where 2θs are about 13.9°, 21.5°, 21.7°, 22.4°, 22.8°, 24.5° and 35.0° in a powder X-ray diffraction spectrum, which have excellent properties as active ingredient of a medicament for prophylactic and/or therapeutic treatment of glaucoma and the like. | 10-25-2012 |
Patent application number | Description | Published |
20100123909 | Device and method for driving liquid-drop ejection head and image forming apparatus - An OFF timing of a drive waveform is set to be concentrated on a position of the drive waveform where a long time with substantially no voltage fluctuation can be ensured, and a pulse present before the position timewise is sequentially selected and applied to a pressure generating element. | 05-20-2010 |
20100188448 | Droplet discharge head, droplet discharge apparatus, and image forming apparatus - A droplet discharge head includes circuit boards each mounted with one or more nonvolatile memories. The nonvolatile memories are configured in a data-rewritable manner and are used to store written data even when power is turned off. The nonvolatile memories have a write-protect function. One or more of the nonvolatile memories are set to write inhibition state and the write inhibition state is fixed. One or more of the remaining nonvolatile memories are set to rewritable state. | 07-29-2010 |
20110228006 | IMAGE FORMING APPARATUS - An image forming apparatus that forms an image on a sheet by discharging a liquid droplet from a nozzle hole to the sheet, includes a voltage applying part that applies a voltage to an electrostatic attraction member to cause the electrostatic attraction member to attract the sheet, and acts as an electrically charging part that causes the liquid droplet to be electrically charged; and a checking part that detects an electrical charge or an induced electric current of the liquid droplet that has been electrically charged, for checking a state of the liquid droplet being discharged from the nozzle hole, wherein an electric potential applied by the voltage applying part is different between at a time when the liquid droplet is separating from the nozzle hole and at a time when the liquid droplet is flying. | 09-22-2011 |
20120069095 | INKJET HEAD AND IMAGE FORMING APPARATUS HAVING THE SAME - An inkjet head includes: an ink tank plate that includes a nozzle to discharge a liquid; a drive circuit member connected to an electromechanical transducer to apply a voltage to the electromechanical transducer to generate a pressure in an ink tank to discharge a liquid from the nozzle; a liquid supply plate stacked approximately in parallel with the drive circuit member on the ink tank plate; and a sealing material that hermetically seals an electrical connection between the drive circuit member and the wiring member. The liquid supply plate is provided with a receptacle having a hole portion or a concave portion and a mount area surrounded by the receptacle. The drive circuit member is received in the mount area. The sealing material is filled inside the mount area after the liquid supply plate is bonded to the ink tank plate. | 03-22-2012 |
20120212547 | DROPLET DISCHARGING HEAD AND IMAGE FORMING APPARATUS - A droplet discharging head includes: a nozzle substrate that includes a nozzle opening to discharge a droplet therethrough; a liquid chamber substrate that includes liquid pressure chambers communicating with the nozzle openings; a vibration plate arranged to face the nozzle substrate with the liquid chamber substrate interposed therebetween; piezoelectric elements that are provided to face the liquid pressure chambers with the vibration plate interposed therebetween and are arranged in a predetermined direction; a driving element provided, in a flip-chip implementation, on a flow path substrate that includes the nozzle substrate, the liquid chamber substrate, the vibration plate, and the piezoelectric elements; and a first reinforcing wire that is disposed to at least one of the flow path substrate and the driving element, has a band shape extending in a direction along a row of the piezoelectric elements, and is connected to a common electrode shared by the piezoelectric elements. | 08-23-2012 |
20140022305 | LIQUID DROPLET EJECTING HEAD AND IMAGE FORMING APPARATUS - A liquid droplet ejecting head is disclosed. The liquid droplet ejecting head includes an electromechanical transducer element; a first substrate which includes a first wiring member; a reinforcing member which is mounted on the first substrate; and a second substrate which includes a second wiring member and which is mounted on the reinforcing member, wherein liquid droplets are ejected when driving power is supplied to the electromechanical transducer element via the first wiring member and the second wiring member. | 01-23-2014 |
20150029270 | DROPLET DISCHARGING HEAD AND IMAGE FORMING APPARATUS - A droplet discharging head includes: a nozzle substrate that includes a nozzle opening to discharge a droplet therethrough; a liquid chamber substrate that includes liquid pressure chambers communicating with the nozzle openings; a vibration plate arranged to face the nozzle substrate with the liquid chamber substrate interposed therebetween; piezoelectric elements that are provided to face the liquid pressure chambers with the vibration plate interposed therebetween and are arranged in a predetermined direction; a driving element provided, in a flip-chip implementation, on a flow path substrate that includes the nozzle substrate, the liquid chamber substrate, the vibration plate, and the piezoelectric elements; and a first reinforcing wire that is disposed to at least one of the flow path substrate and the driving element, has a band shape extending in a direction along a row of the piezoelectric elements, and is connected to a common electrode shared by the piezoelectric elements. | 01-29-2015 |
20150070421 | CONTROL CIRCUIT AND CONTROL METHOD THEREOF, LIQUID DROPLET EJECTION HEAD AND IMAGE FORMING APPARATUS - A control circuit is disposed in which an analog switch is built, an ON/OFF-timing of the analog switch can be controlled, and mask-patterns can be set, which mask-patterns are used for switching ON/OFF the analog switch can be selected by analog-switch-selection data, and a number of the mask-patterns which can be set can be selected. The circuit includes mask-pattern-setting units for setting one of the mask-patterns by one of switching control signals; and a selection unit for selecting a mode from modes including a first mode in which the number of mask-patterns is smaller and a second mode in which the number of mask-patterns is larger. When the first mode is selected by the selection unit, to one mask-pattern-setting unit which is not selected by the analog-switch-selection data, the same switching control signal that is supplied to another mask-pattern-setting unit which is selected by the analog-switch-selection data is supplied. | 03-12-2015 |