Abstract: A printing device includes a head that has a plurality of nozzles, a reversing section for reversing a front surface and a back surface that are facing surfaces of a printing medium facing the head, and a control section for causing the head to execute an ejection operation of forming an image forming dot for printing an image designated as a print target and a flushing dot other than the image forming dot on the facing surface by moving either one of the printing medium and the head so as to relatively change the positions of the printing medium and the head and ejecting liquid from each of the nozzles.

Abstract: A printing apparatus includes a first head that forms a first dot group and a second head that forms a second dot group. The first head has a first nozzle row for a first chromatic ink and a second nozzle row for a second chromatic ink. The second head has a third nozzle row for the first chromatic ink and a fourth nozzle row for the second chromatic ink. With respect to at least the first chromatic ink or the second chromatic ink, in a case in which the number of dots that configure dot rows that are lined up in the main scanning direction, is 3500 or more, a rational number, which is expressed using a number of dots included in the first dot group and a number of dots included in the second dot group in the dot rows, is a value other than zero.

Abstract: A control section of a printing device has a print instruction receiving section configured to receive print instructions to a printing medium including a plurality of pages, and an ink use analyzing section configured to analyze image forming dots formed on each page and to output each of ink use information and ink non-use information for each page. The control section is configured to acquire the ink non-use information of a given first page of continuous pages of the plurality of pages and the ink use information of a second page that is a next page of the first page, and to determine to use ink, that is not used in the first page shown by the ink non-use information and is used in the second page shown by the ink use information, at least for flushing dots to the first page.

Abstract: 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.

Abstract: 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.

Abstract: A liquid ejecting apparatus includes a drive signal generation section which generates a drive signal and a liquid ejecting head. The drive signal is a periodic signal. One period of the drive signal has two durations of (i) a droplet ejection duration with a waveform part used to eject the droplet from the nozzle and (ii) a droplet non-ejection duration without the waveform part used to eject the droplet from the nozzle, and the droplet non-ejection duration is equal to or longer than the droplet ejection duration.

Abstract: A control section of a printing device has a print instruction receiving section configured to receive print instructions to a printing medium including a plurality of pages, and an ink use analyzing section configured to analyze image forming dots formed on each page and to output each of ink use information and ink non-use information for each page. The control section is configured to acquire the ink non-use information of a given first page of continuous pages of the plurality of pages and the ink use information of a second page that is a next page of the first page, and to determine to use ink, that is not used in the first page shown by the ink non-use information and is used in the second page shown by the ink use information, at least for flushing dots to the first page.

Abstract: A printing device includes a head that has a plurality of nozzles, a reversing section for reversing a front surface and a back surface that are facing surfaces of a printing medium facing the head, and a control section for causing the head to execute an ejection operation of forming an image forming dot for printing an image designated as a print target and a flushing dot other than the image forming dot on the facing surface by moving either one of the printing medium and the head so as to relatively change the positions of the printing medium and the head and ejecting liquid from each of the nozzles.

Abstract: A printing device include a control section that causes the head to execute an ejection operation of forming an image forming dot for printing an image designated as a print target and a flushing dot other than the image forming dot on a printing medium, wherein the control section has an acquiring unit that acquires a prescribed parameter in printing conditions for forming the image forming dot on the printing medium, a determining unit that determines a margin area in which the flushing dot is not formed in an end portion of the printing medium based on the prescribed parameter, and an executing unit that executes the ejection operation so as not to form the flushing dot in the margin area on the printing medium.

Abstract: A method for manufacturing a printing device, wherein the printing device uses ink including pigment ink and dye ink to form a printed image on a print medium, and discharges an ink quantity according to a voltage value of a drive voltage to form ink dots on the print medium. In this printing device, the voltage value of the drive voltage for creating ink dots is corrected.

Abstract: A printing apparatus that includes a head unit in which a plurality of heads are disposed so that parts of nozzle rows overlap with each other between the heads and a control unit configured to make the head unit execute a specified operation for forming flushing dots other than image formation dots on a print medium by discharging liquid through the nozzles. The control unit makes the head unit execute the specified operation in which a liquid amount discharged in the specified operation per nozzle that does not belong to an overlap area where parts of the nozzle rows overlap with each other between the heads is larger in a set movement distance thereof than a liquid amount discharged in the specified operation per nozzle that belongs to the overlap area in a set movement distance thereof, if a specified condition for execution of the specified operation is satisfied.

Abstract: 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.

Abstract: 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.

Abstract: A printing apparatus which can form an image formation dot for printing an image defined as an object to be printed on a printing medium, the printing apparatus comprising a line head which includes a nozzle array arraying a plurality of nozzles, by moving at least one of a printing medium and the head, in a direction intersecting a direction relatively changing a position of the printing medium and the head and a control unit which performs a specific operation forming a flushing dot besides the image formation dot by discharging a liquid on the line head, wherein, when a specific condition increasing viscosity of the liquid is satisfied, the control unit performs the specific operation of discharging the liquid to the printing medium and the specific operation of discharging the liquid to a place other than the printing medium.

Abstract: A spark plug having a metallic shell covered with a nickel plating layer and having a groove portion formed between a tool engagement portion and a gas seal portion and having an orthogonal-to-axis sectional area of 36 mm2 or less.

Abstract: A printing device includes a nozzle row for chromatic ink comprising K nozzles and a nozzle row for achromatic ink comprising (n·K) nozzles. In a color region, an image-forming operation is performed m times in which the movement direction of the nozzle rows switches alternately between forward and reverse directions, whereby a region of the image having a predetermined width is formed. The image-forming operation performed m times includes the image-forming operation performed once in which both of the nozzle rows for chromatic ink and for achromatic ink are used, and the image-forming operation performed (m?1) times in which only the nozzle row for chromatic ink is used. In a monochrome region, the image-forming operation is performed once in which only the nozzle row for achromatic ink is used, whereby a region of the image having a predetermined width is formed.

Abstract: A printing device performs band printing during two-way printing, wherein the band printing uses black pigment ink and dye ink. In this printing device, in an advancing printed area for which a print head moves in an advancing direction, pigment ink dots are formed first and dye ink dots are formed second. In a retreating printed area for which the print head moves in a retreating direction, dye ink dots are formed first and pigment ink dots are formed second.

Abstract: A liquid ejecting apparatus includes a drive signal generation section which generates a drive signal and a liquid ejecting head. The drive signal is a periodic signal. One period of the drive signal has two durations of (i) a droplet ejection duration with a waveform part used to eject the droplet from the nozzle and (ii) a droplet non-ejection duration without the waveform part used to eject the droplet from the nozzle, and the droplet non-ejection duration is equal to or longer than the droplet ejection duration.

Abstract: A printing apparatus includes a first head that forms a first dot group and a second head that forms a second dot group. The first head has a first nozzle row for a first chromatic ink and a second nozzle row for a second chromatic ink. The second head has a third nozzle row for the first chromatic ink and a fourth nozzle row for the second chromatic ink. With respect to at least the first chromatic ink or the second chromatic ink, in a case in which the number of dots that configure dot rows that are lined up in the main scanning direction, is 3500 or more, a rational number, which is expressed using a number of dots included in the first dot group and a number of dots included in the second dot group in the dot rows, is a value other than zero.

Abstract: A spark plug having a metallic shell covered with a nickel plating layer and having a groove portion formed between a tool engagement portion and a gas seal portion and having an orthogonal-to-axis sectional area of 36 mm2 or less.