Patent application number | Description | Published |
20090244155 | Liquid ejecting apparatus and liquid ejecting method - A liquid ejecting apparatus for forming a multicolored image on a recording medium includes: a printing head for ejecting a plurality of colors; a head driving section that performs a main scanning for moving the printing head in a main scanning direction; a transporting section that transports the recording medium in a sub-scanning direction crossing the main scanning direction; and a dot control section that controls the head driving section and the transporting section so as to form an image on the recording medium by ejecting the liquids on the recording medium from the nozzle while repeatedly performing the main scanning for moving the printing head in the main scanning direction and a sub-scanning for transporting the recording medium in the sub-scanning direction. | 10-01-2009 |
20090262157 | Forming Method of Adjustment Pattern and Liquid Ejection Apparatus - A forming method of an adjustment pattern is characterized by forming a first adjustment pattern on a medium by ejecting liquid onto the medium from a part of a plurality of nozzles that are arranged along a direction in which the medium is transported and that eject the liquid onto the medium while moving relative to the medium, and subsequently, after transporting the medium, forming a second adjustment pattern on the medium by ejecting the liquid onto the medium from nozzles other than the part of the plurality of nozzles, the second adjustment pattern being lined up in a movement direction of the nozzles with respect to the first adjustment pattern. | 10-22-2009 |
20110057972 | PRINTING APPARATUS AND METHOD OF CONTROLLING PRINTING APPARATUS - A printing apparatus including a first nozzle that ejects dye ink; a second nozzle that ejects pigment ink of a color that is the same as the dye ink; and a controller that controls ejection of ink from the first nozzle and the second nozzle. The controller performs a first ejection operation, in which the pigment ink is ejected from the second nozzle after the dye ink is ejected from the first nozzle, for a predetermined position on a medium and performs a second ejection operation, in which the dye ink is ejected from the first nozzle after the pigment ink is ejected from the second nozzle, for a second position on the medium. An amount of the pigment ink per unit area that is ejected in the second ejection operation is made smaller than an amount of the pigment ink per the unit area in the first ejection operation. | 03-10-2011 |
20110063347 | PRINTING APPARATUS AND METHOD OF CONTROLLING PRINTING APPARATUS - A printing apparatus including: first nozzles which discharge a dye ink; second nozzles which discharge a pigment ink of the same color as the dye ink; and a controller which controls the discharge of the inks from the first nozzles and the second nozzles, wherein the controller executes a first discharging operation for discharging the dye ink from the first nozzles and then discharging the pigment ink from the second nozzles at predetermined positions on a medium and executes a second discharging operation for discharging the pigment ink from the second nozzles and then discharging the dye ink from the first nozzles at positions different from the predetermined positions on the medium, and wherein a ratio of the dye ink to the pigment ink in the amount of ink discharged in the second discharging operation per unit area is less than that in the first discharging operation per unit area. | 03-17-2011 |
20110085000 | PRINTING APPARATUS AND PRINTING METHOD - There is provided a technique for suppressing the image quality of a printed image. A printing apparatus including: a first nozzle row in which nozzles ejecting dye ink of a certain color are arranged in a predetermined direction; a second nozzle row in which nozzles ejecting pigment ink of the certain color are arranged in the predetermined direction. | 04-14-2011 |
20110175958 | FLUID EJECTING APPARATUS AND FLUID EJECTING METHOD - A fluid ejecting apparatus includes a head that is provided with a first-nozzle-row and a second-nozzle-row, a platen that is provided with a plurality of convex-portions, and a control unit repeats an operation of ejecting fluid from the nozzles moving in two directions of a forward-path and a backward-path. The control unit adjusts the ejecting time such that, at the medium of the convex-portions, an amount-of-deviation in the movement-direction of the dots formed on the forward-path and the backward-path by the first-nozzle-row is less than an amount-of-deviation of the dots formed on the forward-path and backward-path by the second-nozzle-row. In the ejection operation, and such that the position in the movement-direction of the dots formed by the second-nozzle-row is a position opposite to the side on which the head moves in the movement-direction with respect to the position in the movement-direction of the dots formed by the first-nozzle-row. | 07-21-2011 |
20110216115 | PRINTING METHOD AND PRINTING APPARATUS - In the printing method, on a medium transported in a transport direction, while nozzle rows including a plurality of nozzles move in a scanning direction intersecting the transport direction, ink is ejected from the nozzles, and dots are formed to print an image. Coordinates of dots formed by nozzles of a nozzle row center portion and coordinates of dots formed by nozzles of nozzle row end portions are measured with respect to a ruled line printed in advance along the transport direction by ejecting ink from the plurality of nozzles, and an amount of deviation in the scanning direction among the coordinates is calculated. Pixel data corresponding to the dots formed by the nozzles of the nozzle row end portions among pixel data indicating unit elements forming an image are shifted in the scanning direction according to the amount of deviation, to perform printing. | 09-08-2011 |
20140139580 | LIQUID DISCHARGE APPARATUS - A liquid discharge apparatus, comprising: a transportation unit that transports a medium; a head that includes a first nozzle array on which nozzles for discharging a first liquid are arrayed, and a second nozzle array on which nozzles for discharging a second liquid are arrayed; and a controller that controls the transportation unit and the head based on print data, wherein, in a case where the printing of the print data is designated to be performed without forming the printing dots of the first liquid on the medium, the controller causes the head to discharge the second liquid from the second nozzle array to form the printing dots of the second liquid on the medium, and causes the head to discharge the first liquid from the first nozzle array to form the flushing dots of the first liquid on the medium. | 05-22-2014 |
20140152731 | PRINTING APPARATUS - A printing apparatus comprising: a first transport unit that transports a printing medium; a line head, having a nozzle row in which the plurality of nozzles are arranged, that ejects the liquid from the nozzles onto the printing medium; a second transport unit, disposed at a distance from the first transport unit downstream from the first transport unit, that further transports the printing medium transported by the first transport unit; and a control unit that causes the line head to execute a flushing operation for ejecting the liquid from the nozzles at a predetermined frequency, wherein when causing the line head to execute the flushing operation, the control unit provides a margin, where the liquid does not land, in a region corresponding to a predetermined distance from a leading end of the printing medium that is an end of the printing medium located toward the second transport unit. | 06-05-2014 |
Patent application number | Description | Published |
20090009555 | FLUID EJECTING APPARATUS - A fluid ejecting apparatus for ejecting a fluid includes a recording head and a capping device. The recording head includes a storage portion and a plurality of ejection nozzles. The capping device comes into contact with a discharge surface of the fluid in the recording head and receives the fluid discharged through the nozzles. The recording head capping device includes a cap-side channel and a passing portion. The cap-side channel faces the nozzles when the recording head capping device is in contact with the discharge surface. The passing portion creates negative pressure in the nozzles by passing a material in the cap-side channel. The cap-side channel includes a high flow rate section and a low flow rate section. | 01-08-2009 |
20100245465 | LIQUID SUPPLYING APPARATUS AND LIQUID EJECTING APPARATUS - A liquid ejecting apparatus includes a liquid ejecting head and a cleaning device. The liquid ejecting head has a nozzle formation surface and nozzles formed therethrough. The cleaning device applies a suction force to the inside of the liquid ejecting head through the nozzles to suck the liquid out of the liquid ejecting head for forcible discharging of the liquid. A liquid supplying apparatus includes a liquid supplying passage through which the liquid is supplied from a liquid supplying source at an upstream side, toward the liquid ejecting head at a downstream side. A pump is driven for suction and discharging operations. The pump includes a pump chamber and a displacement member. The displacement member is displaced between two or more positions that include a close position for closing an outlet port through which the liquid flows out of the pump chamber to the downstream side. | 09-30-2010 |
20120081446 | CONTROL METHOD OF LIQUID EJECTING APPARATUS - A liquid ejecting apparatus includes first liquid ejecting nozzles that eject first liquid; a second liquid ejecting nozzle that ejects second liquid which is different from the first liquid; and a control unit which performs control of ejection of the first liquid from the first liquid ejecting nozzles and ejection of the second liquid from the second liquid ejecting nozzles. The control unit has a first mode of performing control to form flushing dots by ejection from the first liquid ejecting nozzles on a recording medium, the ejection not being based on image data, form background dots by ejection from the second liquid ejecting nozzle on the flushing dots, the ejection being based on the image data, and form image dots by ejection from the first liquid ejecting nozzles on the background dots, the ejection being based on the image data. | 04-05-2012 |
20130195630 | PUMP APPARATUS - A pump apparatus includes: a stationary shaft; a rotation-regulating member having a coil main body wound around the stationary shaft, the rotation-regulating member being permitted to rotate in a direction of loosening the coil main body and the rotation-regulating member being restrained from rotating in a direction of tightening the coil main body; a driven rotatable member that may rotate around the stationary shaft when a driving force of a driving source is transmitted; and a suction pump that has a rotary member driven together with rotation of the driven rotatable member and that performs a suction operation when the rotary member rotates. The suction pump is configured such that the rotation-regulating member rotates in the tightening direction of the coil main body when the driven rotatable member rotates in a direction opposite to a direction in which the driven rotatable member performs the suction operation. | 08-01-2013 |
Patent application number | Description | Published |
20120242965 | PROJECTOR - A projector includes: a discharge lamp; a discharge lamp driving unit that drives the discharge lamp by supplying a driving power to the discharge lamp through supply of a driving current thereto; and a control unit that controls the discharge lamp driving unit based on plural operating modes in which maximum values of the driving power are different from one another, wherein the control unit switches the operating mode through a transition period and controls the discharge lamp driving unit so that an average value of a frequency of the driving current in the former half of the transition period becomes larger than an average value of a frequency of the driving current in the latter half of the transition period. | 09-27-2012 |
20130083300 | DISCHARGE LAMP LIGHTING DEVICE AND PROJECTOR - A discharge lamp lighting device includes: a discharge lamp drive section which supplies electric power to a discharge lamp; a voltage detecting section which detects drive voltage of the discharge lamp; and a control section which controls the discharge lamp drive section, wherein the control section performs a first control process of controlling the discharge lamp drive section so that the electric power supplied to the discharge lamp is a first power based on the drive voltage detected by the voltage detecting section during a period when the first control process is previously performed, and a second control process of controlling the discharge lamp drive section so that the electric power supplied to the discharge lamp is a second power different from the first power based on the drive voltage detected by the voltage detecting section during a period when the second control process is previously performed. | 04-04-2013 |
20130088687 | PROJECTOR - A control section relatively decreases an absolute value of a current supplied to a discharge lamp in a first period and relatively increases the absolute value in a second period, and in the second period, performs any one of a first control for supplying an alternating current to the discharge lamp, a second control for supplying, to the discharge lamp, a current in which a maximum duration of a first polarity is longer than that in the first control, and a third control for supplying, to the discharge lamp, a current in which a maximum duration of a second polarity is longer than that in the first control, and as the state of deterioration proceeds, decreases at least one of the maximum duration of the first polarity in the second control and the maximum duration of the second polarity in the third control. | 04-11-2013 |
20140085614 | PROJECTOR AND METHOD OF CONTROLLING PROJECTOR - A projector includes a discharge lamp, a discharge lamp lighting device adapted to supply the discharge lamp with a drive current for driving the discharge lamp, a timer section adapted to count lighting time of the discharge lamp, and a control section adapted to control the discharge lamp lighting device to select and then perform either of a plurality of operation modes different in drive current to be output to the discharge lamp from each other, and the control section selects the operation mode based on the lighting time counted by the timer section. | 03-27-2014 |
20140168391 | PROJECTOR AND PROJECTION SYSTEM - A projector includes a discharge lamp, a discharge-lamp driving unit, a control unit, a light modulating element, and a projection optical system. The control unit alternately repeats a high luminance period in which a driving current having a relatively large absolute value is supplied to the discharge lamp and a low luminance period in which the driving current having a relatively small absolute value is supplied to the discharge lamp. The control unit controls the discharge-lamp driving unit according to a driving current waveform formed by the control waveform unit including a direct-current waveform pattern in which the driving current in a first high luminance period, the driving current in a first low luminance period immediately after the first high luminance period, and the driving current in a second high luminance period immediately after the first low luminance period have the same first polarity. | 06-19-2014 |
20140354961 | DISCHARGE LAMP DRIVER, LIGHT SOURCE, PROJECTOR, AND METHOD OF DRIVING DISCHARGE LAMP - A discharge lamp driver includes a discharge lamp drive unit that supplies a drive current to the discharge lamp, and a control unit that controls the discharge lamp drive unit according to a drive current waveform, wherein the drive current waveform has a mixed frequency drive period including a unit drive period containing a first drive period in which a first drive current is supplied to the discharge lamp and a second drive period provided immediately after the first drive period, in which a second drive current is supplied to the discharge lamp, the first drive current is a half-period alternating current having a frequency higher than 10 Hz and not higher than 300 Hz, the second drive current is an alternating current having a frequency higher than 1000 Hz, and a length of the second drive period is equal to or longer than a length of the first drive period. | 12-04-2014 |
Patent application number | Description | Published |
20110075464 | Synchronous rectification control device, method for synchronous rectification control, and insulated type switching power supply - A synchronous rectification control device achieves high power conversion efficiency without supplying additional signal to a secondary side from a primary side. An insulated type switching power supply provides such a synchronous rectification control device. An output power is regulated based on a phase difference between two half bridges in the primary side. In the secondary side of the full bridge converter circuit, a center tap is lead out from the secondary windings of a transformer to obtain two symmetrical sections of windings. A device for detecting winding voltage observes winding voltages at terminals of the sections of windings. The synchronous rectification control circuit controls transistors and MOSFETs connected to the secondary windings to make the transistor in the ON or OFF state depending on the current flow in the secondary windings. | 03-31-2011 |
20140231975 | SEMICONDUCTOR DEVICE - A semiconductor device includes an insulating circuit substrate mounted with at least one semiconductor element; a resin case having a bottom surface portion attached with the insulating circuit substrate and a side surface portion enclosing a periphery of the bottom surface portion; a lead molded integrally with the resin case and provided on a periphery of the insulating circuit substrate to be positioned on a surface of the bottom surface portion inside the resin case, the lead partially extending from inside the resin case to outside the resin case; and a sealing resin filled inside the resin case. A depressed portion is formed on two sides of the lead along a peripheral edge of the bottom surface portion inside the resin case. | 08-21-2014 |
20140374889 | SEMICONDUCTOR DEVICE - A semiconductor device includes a plurality of semiconductor elements; first semiconductor chips including first semiconductor elements, the first semiconductor elements being defined as semiconductor elements in the plurality of semiconductor elements and having a current flowing greater than that of the other semiconductor elements; second semiconductor chips having second semiconductor elements, the second semiconductor elements being defined as semiconductor elements in the plurality of semiconductor elements for controlling the first semiconductor elements; an insulating substrate having a first wiring pattern bonded with the first semiconductor chips; and an insulating member having a second wiring pattern mounted with the second semiconductor chips. | 12-25-2014 |
20150023084 | SEMICONDUCTOR MODULE - A semiconductor module includes a plurality of power semiconductor elements forming upper arms and lower arms of a plurality of sets of half bridge circuits; a plurality of control circuits on/off driving each power semiconductor element having a control terminal of the plurality of power semiconductor elements; and a power supply terminal and a plurality of control terminals, connected to a plurality of respective external connection control terminals. Low potential side electrodes of the power semiconductor elements forming the respective upper arms of the plurality of sets of half bridge circuits and high potential side electrodes of the power semiconductor elements forming the respective lower arms of the plurality of sets of half bridge circuits are individually connected to a plurality of respective external connection output terminals. | 01-22-2015 |