Patent application number | Description | Published |
20090201329 | INK JET PRINTING APPARATUS - An ink jet printing apparatus includes a print head for printing an image on a printing medium. The print head includes a first nozzle array for ejecting a first ink and a second nozzle array for ejecting a second ink. The ink jet printing apparatus also includes a wiping member for wiping a printing face of the print head provided with the first and second nozzle arrays, and a control unit for controlling the wiping member to wipe the printing face depending on an ejection number of the first ink ejected from the first nozzle array and an ejection number of the second ink ejected from the second nozzle array, wherein the control unit controls the wiping member to wipe the printing face if the ejection number of the first ink exceeds a first threshold value or the ejection number of the second ink exceeds a second threshold value. | 08-13-2009 |
20090315959 | RECORDING HEAD AND RECORDING APPARATUS - A recording head includes ejection ports that eject ink, a first liquid chamber for supplying ink to the ejection ports, a second liquid chamber for supplying ink to the first liquid chamber, a gas reservoir disposed in the upper part of the first liquid chamber and collecting gas, a first outlet through which fluid is discharged out of the gas reservoir, and a pump chamber into which fluid is moved through the first outlet out of the first liquid chamber by producing a pressure difference from the first liquid chamber. | 12-24-2009 |
20100060701 | LIQUID CONTAINER - An inner-pressure-changing connecting portion that changes the inner pressure of an ink cartridge and a fitted portion to be fitted on a positioning mechanism provided on an ink-jet printer are disposed coaxially. In a configuration for supplying ink by applying pressure to a pressure chamber, high-accuracy positioning of the ink cartridge and the ink-jet printer can be achieved. | 03-11-2010 |
20100155417 | LIQUID DISCHARGING APPARATUS - A liquid discharging apparatus includes a liquid container having an information storage portion configured to store information and a supply port for supplying liquid in the liquid container to the outside and a movable member having the liquid container attached thereon. After the connection between the supply port and the apparatus is severed while the movable member moves from a first position to a second position, information is written in the information storage portion. The second position is set such that the time required for the movable member to move from the first position to the second position is longer than or equal to the time required for the information communication. | 06-24-2010 |
20120176438 | INKJET RECORDING APPARATUS - An inkjet recording apparatus that suppresses temperature rising of a recording head to decrease standby time when the recording head is high in temperature, thereby reducing a drop in recording speed and degradation in image quality. The inkjet recording apparatus includes a recording head configured to have a discharge port surface in which a discharge port for discharging ink is formed, a temperature sensor configured to detect temperature of the recording head, and a cleaning unit configured to make contact with the recording head to clean the discharge port surface. The inkjet recording apparatus controls whether to make the cleaning unit contact the discharge port surface based on the recording head temperature detected by the temperature sensor. | 07-12-2012 |
20120188304 | INKJET PRINT APPARATUS AND INKJET CONTROL METHOD - When performing at least one of preliminary ejection or a suction unit as a countermeasure against adhering ink that accumulates in the portion where preliminary ejection is performed, the preliminary ejection amount and suction speed of the suction unit are optimized. An inkjet print apparatus that prints by using a printing head for ejecting ink, comprising: an ejecting unit; a sucking unit; a measuring unit that measures an elapsed time after the sucking unit is performed; and a control unit that control ejection by the ejecting unit or sucking by the sucking unit according to the elapsed time measured in the measuring unit; wherein as the elapsed time becomes longer, the amount of ink that is ejected to the ink receiving unit in the ejecting unit is increased or a suction speed at which the ink is sucked in the sucking unit is increased. | 07-26-2012 |
20130027489 | PRINTING APPARATUS - A printing apparatus includes a printing unit configured to apply ink to a recording medium while reciprocating a print head with respect to the recording medium and a drying unit configured to apply energy for accelerating dryness to the recording medium to which the ink is applied by the print head. The drying unit applies a larger energy at edges of a range within which the printing unit moves on the recording medium than at a middle of the range. | 01-31-2013 |
20130235107 | COLOR MEASURING METHOD AND RECORDING APPARATUS - A color measuring method includes: recording color patterns on a sheet by an inkjet head; measuring colors of the color patterns formed on the sheet; and recovering the inkjet head, wherein the recovering is prohibited within a period after the recording and before the measuring. | 09-12-2013 |
20130257931 | INK JET RECORDING APPARATUS AND METHOD OF WIPING RECORDING HEAD - An ink jet recording apparatus includes a recording head, a carriage, a wiping unit, and a control unit. The recording head includes a discharging port surface provided with a first discharging port row group having at least one discharge port row formed by arraying a plurality of discharging ports in a predetermined direction and a second discharging port row group having at least one discharge port row formed by arraying a plurality of discharging ports in a predetermined direction. The carriage causes the recording head to scan reciprocally in a direction intersecting the predetermined direction. The wiping unit includes a sheet member for wiping the discharge port surface and a winding device to wind the sheet member. The control unit controls the winding device so that the first discharge port row group and the second discharge port row group are wiped with different areas of the sheet member. | 10-03-2013 |
20130257977 | PRINTING APPARATUS - A printing apparatus includes a print head, a scanning unit, a sheet-form member, a winding device, and a determining unit. The print head includes an orifice face having an ejection orifice to eject a liquid. The scanning unit performs scanning while reciprocating the print head. The sheet-form member performs a wiping operation of the orifice face of the print head, wherein the wiping operation includes a first wiping operation and a second wiping operation. The winding device performs a winding operation of the sheet-form member. The determining unit determines a length of the sheet-form member that is to be wound by the winding device in accordance with a length of time between the first wiping operation performed by the sheet-form member and the second wiping operation performed by the sheet-form member that follows the first wiping operation. | 10-03-2013 |
20130257978 | INKJET RECORDING APPARATUS AND METHOD FOR CONTROLLING THE SAME - An inkjet recording apparatus includes a recording head, a carriage, a wiping unit, and a controller. The recording head has a discharge port face with a plurality of discharge ports to discharge ink. The carriage has the recording head mounted thereon and performs reciprocal scanning. The wiping unit includes a sheet-shaped wiping member to wipe the discharge port face and a conveying unit to convey the wiping member. The controller controls an amount of conveyance of the wiping member by the conveying unit. The controller performs control so that the conveyance amount in a first case, where a time elapsed since a last conveyance operation of the wiping member is greater than or equal to a certain time, becomes greater than the conveyance amount in a second case, where the time elapsed since the last conveyance operation of the wiping member is less than the certain time. | 10-03-2013 |
20130257980 | INKJET PRINTING APPARATUS AND CONTROL METHOD - An inkjet printing apparatus includes a purge unit having a sheet member that purges ink deposited on an orifice face of a print head and a winding unit that winds the sheet member. By using the number of ink ejections executed between a first purge operation and a second purge operation, the amount of winding of the sheet member is controlled after the second purge operation is completed. | 10-03-2013 |
20130286063 | INK FILLING METHOD AND INKJET RECORDING APPARATUS - An inkjet recording apparatus includes a recording head including a discharge port, a carriage configured to perform reciprocating scanning with the recording head mounted thereon, a main tank configured to store ink, a sub-tank configured to be supplied with ink from the main tank via a tube, a supply tube configured to connect the recording head and the sub-tank, and a control unit configured to control the carriage, wherein the control unit controls acceleration of the carriage such that a dynamic pressure of ink inside the supply tube becomes greater than a pressure resistance to an ink movement and a pressure resistance to an air movement in the tube. | 10-31-2013 |
20130286065 | INK FILLING METHOD AND INKJET RECORDING APPARATUS - An inkjet recording apparatus includes a recording head, a carriage with the recording head mounted thereon, a main tank, a sub-tank configured to be supplied with ink from the main tank via a tube, a supply tube configured to connect the recording head and the sub-tank, a supply unit connected to the supply tube and configured to supply ink from the main tank to the sub-tank, and a control unit configured to control acceleration of the carriage and to control the supply unit, wherein, when an empty volume in the sub-tank is greater than or equal to an ink volume in the main tank, the supply unit is controlled to supply ink to the sub-tank. | 10-31-2013 |
20130286078 | RECORDING APPARATUS AND COLOR MEASURING METHOD FOR RECORDING APPARATUS - A recording apparatus includes: a recording unit for applying ink on a sheet by a printing head; a drying unit for drying the sheet; a measuring unit for measuring patterns on the sheet; a conveying unit for conveying the sheet; a recovering unit for performing a printing head-recovering operation; and a control unit for controlling the apparatus such that, the recording apparatus performs recording to form patterns, the conveying unit performs first conveying to convey the sheet from a recording region to a drying region, the drying unit performs drying, the conveying unit performs second conveying to convey the sheet from the drying region to a measuring region, and the measuring unit performs measuring, in sequence, wherein the recovering operation is performed at timing at least partially overlapping at least one of the first and second conveying operations, the drying operation, and the color measuring operation, after the recording operation. | 10-31-2013 |
20140218440 | PRINTING APPARATUS AND CLEANING METHOD THEREOF - An embodiment of the present invention provides a wiping method capable of preventing a problem such as color mixing or a discharge failure in a wiping operation during the reciprocating motion of a carriage. According to the embodiment, one or a plurality of orifice arrays out of a plurality of orifice arrays included in a printhead are wiped by making a sheet-like wiping member contact to the orifice surface of the printhead. After that, the wiping member is separated from the orifice surface of the printhead, and the used wiping member is wound. Then, the wiping member is made to contact to the orifice surface of the printhead again, and the next one or more orifice arrays are wiped. | 08-07-2014 |
20140313260 | INK JET RECORDING APPARATUS - In the case where a preliminary discharge operation is always performed at a position that is spaced apart from a recording area, the time taken for a recording head to be moved to a preliminary discharge position is increased, and this results in a decrease in throughput. In the case where it is determined that a leading end or a trailing end of a recording medium is located on a platen, positions at which the distance from an end of a recording medium to a recording head with respect to a moving direction is not smaller than a threshold are determined as preliminary discharge positions, and the recording head is controlled to perform a preliminary discharge operation. | 10-23-2014 |
20140340446 | INKJET RECORDING APPARATUS AND CONTROL METHOD FOR THE INKJET RECORDING APPARATUS - While a wiping operation for keeping a satisfactory ejection opening surface of an inkjet recording head is performed, a usage amount of a sheet-like member is to be reduced. An inkjet recording apparatus includes a recording head, a sheet-like member, a reeling roller that reels the sheet-like member | 11-20-2014 |
20140368577 | INKJET RECORDING APPARATUS AND CONTROL METHOD FOR WIPING UNIT - While a wiping operation for keeping a satisfactory ejection opening surface of an inkjet recording head is performed, a usage amount of a sheet-like member is to be reduced. A contamination state of a wiping area after the wiping operation is determined, and a timing of reeling the sheet-like member in a wiping unit is controlled in accordance with a determination result of the contamination state. | 12-18-2014 |
20150062231 | PRINTING APPARATUS AND CONTROL METHOD - The present invention provided a printing apparatus including: an ink storage section; a detection unit detecting an ink remaining amount of the section; a printhead; an air communication section communicating with the section and air; a suction unit; and a control unit. When a predetermined transport-preparation condition regarding transport of the printing apparatus is satisfied, the control unit saves information about the ink remaining amount detected by the detection unit and controls the suction unit to drain ink in the air communication section through the printhead. When a predetermined start-up condition is satisfied, the control unit controls, based on the information, the suction unit to suck ink from the printhead. | 03-05-2015 |