Abstract: In a case where suction means for taking in outside air into an inkjet printer is provided, a heated recording medium is abruptly cooled by a flow of air, thereby causing cooling unevenness, which is a factor of degradation of image quality. Further, it is difficult to efficiently cool an inside of a carriage. In view of the above, provided are a structure for allowing the outside air, which is taken into a device of the inkjet printer, to be directly sucked into the carriage, and a structure for preventing the outside air from passing through the carriage. Thus, the temperature inside the carriage can be effectively decreased. Further, mechanisms for exhausting the gas are provided on both sides of a housing, specifically, one mechanism is provided on a side surface of the housing and another mechanism is provided on a rear surface thereof. Thus, unevenness of exhausted gas can be suppressed at the right and left of the housing.

Abstract: A nozzle face cleaning device and an image recording device includes: a wiping member; cleaning liquid adding means which adds a cleaning liquid to the wiping member; pressing means that brings the wiping member to which the cleaning liquid has been added, into pressure-contact with a nozzle face; and wiping means which makes the wiping member and an ejection head relatively move, and wipes the nozzle face. A cleaning liquid supply flow channel is opened to the air in a connected portion of the cleaning liquid supply flow channel and a cleaning liquid adding nozzle.

Abstract: The invention provides a cap of a liquid discharge head that discharges liquid from nozzle holes, can come in contact with a nozzle hole surface, and has an opposite surface opposite the nozzle hole surface, in which the opposite surface has protrusions.

Abstract: An image reading apparatus includes a document sheet cover, a pressing portion, and a light irradiating portion. The document sheet cover is openable and closable with respect to a document sheet mounting surface. The pressing portion is provided in a recess formed in a counter surface of the document sheet cover that faces the document sheet mounting surface. The pressing portion is biased in a direction to project from the counter surface. When the document sheet cover is closed, the pressing portion contacts a document sheet placed on the document sheet mounting surface and is housed in the recess. The light irradiating portion is configured to irradiate light, toward the document sheet mounting surface, from a gap formed between a side wall of the recess and the pressing portion.

Abstract: Provided is a liquid ejecting apparatus which includes a plurality of liquid receiving portions in which the same kinds of liquid are received, a switching unit which switches the liquid receiving portion that supplies the liquid to a liquid ejecting head, and a controller which performs a maintenance process including discharging the liquid through the liquid ejecting head, in which, when a liquid residual amount of the liquid receiving portion that supplies the liquid to the ejecting head, which is calculated by a residual amount estimation portion, is less than a determination value, the controller performs the maintenance process in a state where the liquid receiving portion to supply the liquid to the liquid ejecting head is selected among the plurality of liquid receiving portions and the liquid is supplied from the selected liquid receiving portion to the liquid ejecting head.

Abstract: An inkjet recording apparatus of the present disclosure includes a recording portion having a recording head, a cap unit that caps the recording head, a wipe unit that performs a recovering process of the recording head, a wipe moving mechanism that moves the wipe unit in a horizontal direction, and a wipe lifting mechanism that moves the wipe unit in an up-down direction. In a case where capping is performed with respect to the recording head by means of the cap unit, the cap unit is moved to the first position by means of the wipe moving mechanism, with the cap unit located over the wipe unit, and then the cap unit is lifted up by means of the wipe lifting mechanism.

Abstract: Air blown out from one blowing-out opening of a pinch roller which is within a predetermined angle range forms an air flow of a flow rate Fc which heads for a region between a suction mechanism and a print medium. This makes it possible to efficiently guide the air blown out from the blowing-out opening into the region, and as a result, ink mist can be collected satisfactorily even in a case where the amount of air blown from the pinch roller is relatively small. Further, in this case, the flow rate Fe of a flow blown from the pinch roller is appropriately determined, whereby the suction mechanism can collect substantially 100% of air and ink mist flowing into the region.

Abstract: A liquid absorbing material, being provided in a liquid ejecting apparatus having a liquid ejecting head for ejecting liquid from nozzle openings formed on a nozzle forming surface, and being able to come into abutment with the liquid ejecting head so as to cover the nozzle openings and being stored in a cap having a discharge channel for discharging the liquid in the interior thereof, includes a body portion to be arranged in the cap when being stored in the cap, and a projecting portion arranged in the discharge channel.

Abstract: A maintenance unit is a unit that maintains a liquid ejecting head and includes a cap holder that has a cap member capable of abutting against the liquid ejecting head, guide pins that guide the cap holder in a movable manner in an approaching/separating direction in which the cap member approaches and is separated from the liquid ejecting head, an engagement portion that is capable of being engaged with the cap holder, and a displacement operating portion that displaces the engagement portion between a restricting position at which the engagement portion restricts drawing of the cap holder out of the guide pins and an allowing position at which the engagement portion allows the cap holder to be drawn out of the guide pins.

Abstract: A maintenance method which is used for a liquid jetting apparatus provided with a jetting head which has a nozzle surface formed with nozzle holes and which jets a liquid from the nozzle holes and a cap which covers the nozzle surface, includes: detecting a temperature in the liquid jetting apparatus; discharging the liquid in the jetting head from the nozzle holes into the cap in a state that the nozzle surface of the jetting head is covered with the cap; sucking the liquid discharged into the cap via a discharge hole provided at a bottom portion of the cap in a state that the cap is separated from the jetting head; and determining a suction amount for sucking the liquid discharged into the cap per a predetermined period of time based on the detected temperature.

Abstract: In a method to clean nozzles and ink channels of at least one ink print head with a flushing medium in an ink printing apparatus, a necessary flushing quantity of the flushing medium that is to be provided and which is necessary for flushing of the ink print head in a flushing process is determined from either a predetermined flushing quantity predetermined depending on a print duration of the ink printing apparatus or from a drive flushing quantity derived from a flushing quantity curve that indicates a dependency of the flushing quantity on an elapsed time for an ink used in printing, the necessary flushing quantity being either said predetermined flushing quantity or the derived flushing quantity, whichever is greater. The determined necessary flushing quantity is used to flush the ink print head.

Abstract: A printer includes a printhead cleaning system that enables improved cleaning of the printhead and reduces nozzle contamination. The printer includes a pair of parallel walls and an elongated member extending through at least one of the walls. The elongated member is connected to a vacuum source and has a slit positioned between the pair of walls. A controller is operatively connected to the vacuum source and to an actuator, and operates the actuator to move a printhead into contact with the pair of walls to place a face plate of the printhead opposite the slit. The controller further operates the vacuum source to generate a vacuum in the elongated member to pull air into the elongated member when the printhead is opposite the slit.

Abstract: A cap member has a fitting recess in which a liquid ejecting head is mounted. On inner surfaces of the fitting recess, a contact section configured to make contact with a side surface of the liquid ejecting head intersecting with a liquid ejecting surface is continuously provided along a circumferential direction of the fitting recess. A movement unit moves the cap member relative to the liquid ejecting head in a manner in which an area on the side surface of the liquid ejecting head with which the contact section makes contact is gradually increased when attaching the cap member to the liquid ejecting head.

Abstract: An image forming apparatus includes an apparatus body, a recording head, a cap member, and release valves. The head has a nozzle face with nozzles to eject liquid droplets. The head is placed in the apparatus body so as to eject the droplets obliquely downward in any of the vertical or horizontal arrangement of the apparatus body. The cap member caps the nozzle face and has openings at opposed ends in a longitudinal direction of the cap member to communicate an inside of the cap member with an outside of the cap member. The valves open and close the openings relative to an atmosphere. One of the valves placed higher than another one of the valves in accordance with the vertical or horizontal arrangement is configured to open the inside of the cap member to the atmosphere through one of the openings placed higher than another one of the openings.

Abstract: An image forming apparatus includes a recording head having a nozzle surface including plural nozzles configured to eject liquid droplets, a suction cap configured to seal the nozzle surface of the recording head, a cap holder configured to displaceably hold the suction cap via an elastic member and retractably disposed corresponding to the recording head, and a wiping member configured to wipe the nozzle surface of the recording head in a direction from an upper side to a lower side. The cap holder is provided with a guide part configured to come into contact with an upper end surface of the recording head to frictionally move on the upper end surface of the recording head, and the guide part is disposed on an upper side of the recording head.

Abstract: A liquid ejection apparatus of the invention comprises a switcher configured to connect or disconnect a sucker with suction tubes individually. The switcher comprises a case and a rotator. The case comprises an internal space and holes each causing the internal space to communicate with an outside of the case. The rotator is accommodated in the internal space and is rotatable along an inner surface defining the internal space in the case. The suction tubes are respectively connected to the holes. The rotator comprises a passage formed therein. The passage is configured to cause the sucker to communicate with two or more holes without causing the sucker to communicate with the holes other than the two or more holes, depending on a rotational position of the rotator in the internal space.

Abstract: An ink jet printing apparatus prints an image by employing a print head capable of ejecting ink from ejection ports. The printing apparatus comprises a cap configured to cover the ejection ports, a valve configured to open and close an atmospheric communicating portion that communicates an inside of the cap and the atmosphere, a suction unit configured to generate a suction force, and a control unit. The control unit performs a first operation where the suction unit applies a first suction force to the inside of the cap in a state where the cap covers the ejection ports and the valve closes the atmospheric communicating portion, and a second operation where the suction unit applies a second suction force, less than the first suction force, to the inside of the cap in a state where the cap covers the ejection ports and the valve opens the atmospheric communicating portion.

Abstract: An inkjet printing apparatus carries out printing by moving an inkjet head and printing paper relative to each other. The inkjet head has a plurality of nozzles for discharging ink droplets. The apparatus includes a feed pipe connected to each nozzle of the inkjet head for feeding ink thereto, an ink feed control valve mounted on the feed pipe for controlling circulation of the ink, a cap for blocking the plurality of nozzles of the inkjet head, a decompression device for decompressing an inside of the cap, decompression piping for connecting the cap and the decompression device, a decompression control valve mounted on the decompression piping for controlling communication between the cap and the decompression device, and a controller.

Abstract: The present invention provides a cap member for a liquid discharge head. The cap member is configured to seal a discharge surface of the liquid discharge head and includes a lower receiving portion; a liquid-absorbing member disposed opposite the discharge surface of the head and including a nozzle-facing surface and a bottom portion; and a suction hole, provided at a bottom of the cap member, through which ink is discharged. In the thus-configured cap member, the bottom portion of the liquid-absorbing member is disposed apart from the lower receiving portion and from the suction hole disposed at the bottom of the cap member, and has a surface slanted toward the suction hole.

Abstract: A suction device is provided for cleaning a nozzle surface of a print head. The suction device comprises a suction surface and a spacer, whereby the spacer is provided with a spacer channel, the spacer channel comprising a spacer opening at an outer surface of the spacer and the spacer channel being operatively coupled to an air flow source. The spacer is configured for positioning the suction surface at a predetermined distance from the nozzle surface for providing a suction gap. The suction device is configured to provide in operation an air flow through the suction gap, along the nozzle surface and into the suction channel. An air flow may be provided through the spacer channel of the spacer in order to clean an area of the nozzle surface of the print head.

Abstract: An inkjet printing apparatus, a clogged nozzle recovering method, and a clogged nozzle recovery program are provided. The inkjet printing apparatus includes a head, a tank, a first pump, a cap, a second pump and a control means. The head is provided with a nozzle face and a plurality of nozzles. The tank is connected with the head through a tube. The first pump is connected with the tank and maintains the tank at a constant negative pressure. The cap for suction covers a part of the nozzles on the nozzle face of the head. The second pump is connected with the cap for sucking an inside of the cap. The control means controls to lower the negative pressure of the tank that is maintained by the first pump when the inside of the cap is sucked by the second pump.

Abstract: The film coating device forms a film of a coating liquid on the surface of a material to be coated using an inkjet printer. A print head unit moves in a first direction with respect to a surface of a material to be coated, and a plurality of print heads are continuously mounted on the print head unit over an entire coating width in a direction or orthogonal to a first direction. A fixed control unit is provided on a fixed portion of the film coating device, and a coating control unit is provided on the moving portion of the film coating device. The coating control unit is configured to control a coating state of the plurality print heads and moves together with the print head unit. The coating control unit is connected to the fixed control unit by a transmission line.

Abstract: There is provided an ink discharge apparatus including a discharge head provided with a nozzle surface having a first nozzle which is formed in the nozzle surface and via which a liquid droplet of a first ink is discharged and a second nozzle which is formed in the nozzle surface and via which a liquid droplet of a second ink, having a color deeper than a color of the first ink, is discharged; a maintenance device which performs maintenance of the discharge head; and an apparatus body in which the maintenance device is arranged. The maintenance device includes a suction cap which is arranged with respect to the apparatus body, with a predetermined clearance, so the suction cap is rockable three-dimensionally; and an urging mechanism which urges a corner portion of the suction cap in a direction orthogonal to the nozzle surface.

Abstract: A liquid ejection device includes an ejection head, a suction section, a space section, a collection part, an outlet section and a suction device. The suction section has a slit shaped opening. The space section is in communication with the suction section and has an internal volume greater than an internal volume of the suction section. The collection part is configured to collect the mist generated by ejecting the liquid by separating the mist from air suctioned by the suction section. The outlet section has a first opening and a second opening, the first opening is in communication with the space section and the second opening is in communication with the collection part. The suction device is configured to generate an air flow flowing from the suction section to the collection part. Opening area of the slit shaped opening is greater than opening area of the first opening.

Abstract: An image forming device includes a drive transfer device that selectively transmits a driving force of a first drive source to one of liquid feed pumps, a suction part of a maintenance recovery device and an air-vent opening part. The air-vent opening part is arranged to have a maximum driving-force transmission path leading to the drive transfer device among the liquid feed pumps, the suction part and the air-vent opening part. The maintenance recovery device, the drive transfer device and the liquid feed pumps are arranged in order in a sheet transport direction. The suction part of the maintenance recovery device and the drive transfer device are arranged on opposite sides of a cap of the maintenance recovery device in the sheet transport direction.

Abstract: A liquid ejecting apparatus includes a liquid ejecting head, a driving signal generator which generates a micro vibration pulse, a controller which controls applying of the micro vibration pulse to a pressure generation unit, a cap which includes a sealing space not including an absorber inside, and seals a nozzle in the sealing space by being in close contact with the liquid ejecting head, and a suction unit which sucks liquid from a nozzle, in which micro vibration driving which causes liquid in the pressure chamber corresponding to a nozzle to be subjected to a micro vibration by applying at least one or more micro vibration pulses to the pressure generation unit corresponding to the nozzle in which a cleaning operation including a suction operation using the suction unit is performed is intermittently performed.

Abstract: The invention has been made to prevent ink adhesion or an ink discharge failure caused by ink adhesion due to evaporation of volatile components of ink which occurs when the ink receptor of a printhead is exposed to air for a long time. If an inkjet printhead and an ink tank containing ink to be supplied to the printhead are attached to a carriage, the ink supply port of the ink tank is pressed to the ink receptor of the printhead. In this arrangement, the presence/absence of attachment of the ink tank to the carriage is detected. If it is detected that the ink tank is not attached to the carriage, a suction operation for the printhead is performed and controlled to suck out ink from the nozzles of the printhead.

Abstract: An inkjet recording apparatus may include a carriage, a recording head mounted on the carriage and including a nozzle surface, a maintenance mechanism, and a controller. The maintenance mechanism may include a cap which covers, in a covering position, the nozzle surface of the recording head, a pump including an inlet and an outlet, a tube extending from the outlet, and a waste ink storage detachably attached to the tube. The controller drives the pump to execute purging with the inlet of the pump in communication with the cap in the covering position, receives an input indicating replacement of the waste ink storage, and drives the pump to execute an idle suction with the inlet of the pump in communication with atmosphere when a time elapsed after the execution of the purging until the reception of the input is shorter than a threshold time.

Abstract: An ink jet recording apparatus is provided which includes a recording unit including a recording head having a surface provided with an ejection opening therein, an aqueous ink that is ejected from the ejection opening to record an image on a recording medium, a protection unit including a covering member that covers the surface having the ejection opening, and a recovery unit separate from the covering member, having no member that scrapes the ink deposited in the ink receiving member or sucks the ink from the ejection opening. The recovery unit includes an ink receiving member that receives waste ink discharged from the ejection opening according to preliminary ejection data, directly from the ejection opening without interposing any other member. The aqueous ink contains a self-dispersible pigment containing the carboxyl group or the sulfonate group.

Abstract: A liquid removing device which removes liquid attached to an abutment section in a cap having the abutment section which is capable of abutting a liquid ejecting head having a nozzle ejecting the liquid onto a target, includes a transfer section which abuts the abutment section to transfer the liquid attached to the abutment section of the cap, wherein a contact angle between a surface of the transfer section and the liquid is smaller than a contact angle between a surface of the abutment section of the cap and the liquid.

Abstract: A liquid ejecting apparatus includes a carriage having a removable liquid receptacle that holds a liquid or a removable connector connected via a flexible liquid channel to an external liquid receptacle that holds a liquid, an ejecting head, mounted in the carriage, that has a nozzle that ejects the liquid, and a maintenance unit that runs maintenance on the ejecting head; the ejecting head has a filter disposed so as to be capable of contact with a liquid absorption member provided in the liquid receptacle and in the connector.

Abstract: A liquid ejecting apparatus includes a liquid ejecting head, a driving signal generator which generates a micro vibration pulse, a controller which controls applying of the micro vibration pulse to a pressure generation unit, a cap which includes a sealing space not including an absorber inside, and seals a nozzle in the sealing space by being in close contact with the liquid ejecting head, and a suction unit which sucks liquid from a nozzle, in which micro vibration driving which causes liquid in the pressure chamber corresponding to a nozzle to be subjected to a micro vibration by applying at least one or more micro vibration pulses to the pressure generation unit corresponding to the nozzle in which a cleaning operation including a suction operation using the suction unit is performed is intermittently performed.

Abstract: The present invention provides an inkjet printing apparatus in which aggregate or the like clogged in a nozzle is sucked to recover the clogged nozzle and provides a clogged nozzle recovering method. The inkjet printing apparatus in accordance with the present invention includes a cap which is structured to cover some of plural nozzles formed in a nozzle face of a head of an inkjet printer, a pressure sensor which acquires a pressure in an inside of the cap in a state that the some of the plural nozzles are covered by the cap, a suction means which sucks the inside of the cap with a pressure lower than a negative pressure at which a meniscus of a nozzle that is not covered with the cap is broken, and a nozzle recovery judgment means which judges recovery of a nozzle by comparing a reference pressure value, which is obtained when nozzles without being clogged are covered by the cap and sucked and is stored beforehand, with a pressure value which is outputted from the pressure sensor.

Abstract: An inkjet printing device includes at least one ink cartridge, at least one ink pipe, at least one print head, an ink refill mechanism, and a pump module. The ink refill mechanism includes at least one transfer channel. After the ink refill mechanism is enabled and the at least one transfer channel is in an open status, in response to a suction generated by the pump module, the air within the at least one print head is ejected out through the at least one transfer channel, and the ink within the at least one ink cartridge is transferred to the at least one print head through the at least one ink pipe.

Abstract: A printer controls a suction pump such that a difference in a discharge amount of an ink and a flow speed of the ink discharged from each nozzle is small between a complete purge in which all ink supply portions connected to a second head communicate with an atmosphere, and a suction purge is performed simultaneously for the nozzles of all types of the second head, and a partial purge in which a communication of a part of the ink supply portions with the atmosphere is blocked by a dummy cartridge, and the suction purge is performed only for the nozzles corresponding to the ink supply portions of which the communication with the atmosphere is not blocked.

Abstract: In a method for determining a maintenance performance of a maintenance unit of an inkjet printing system, the inkjet system comprises an inkjet print head having an orifice surface, the orifice surface comprising an orifice, which orifice is in fluid communication with an ink chamber. The method comprises operating the maintenance unit to perform a maintenance operation on the orifice surface of the inkjet print head and detecting the presence of a wiper element or amount of ink over the orifice by detecting a pressure wave in the ink chamber and analyzing the detected pressure wave to determine the maintenance performance of the maintenance unit.

Abstract: 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.

Abstract: An inkjet printing apparatus and a print head recovery method are provided according to which, in an environment in which dust (e.g., paper dust) is easily attached to the periphery of an ejection port of a print head, the print head is subjected to a recovery operation depending on the level of the attached dust. The inkjet printing apparatus has a cutter unit for cutting a print medium and a recovery unit for performing the recovery operation by wiping the ejection port formation portion at which the ejection port is formed of the print head while sucking the ejection port formation portion. When the passing number showing how many times the cut part of the print medium cut by the cutter passes the printing position is equal to or higher than a threshold value, the recovery means subjects the print head to the recovery operation.

Abstract: An inkjet printing apparatus is provided, which has a simple construction, and is yet capable of reducing ink consumption and cleaning inkjet heads promptly. The inkjet printing apparatus includes connector caps 51a-51l for connecting tubes communicating with suction caps, a cap support 54 supporting the connector caps 51a-51l, a switch element 60 for switching to a sucking state one of the connector caps 51a-51l to which the tubes are connected, and a stepping motor 57 for supporting and rotating the switch element 60.

Abstract: A mist collection device is adapted to collect a mist of liquid generated by ejecting the liquid from a plurality of nozzles in an ejection head, the mist collection device includes a suction section, a tube section, a collection part, an outlet section and a suction device. A suction port is formed in the suction section with the suction port being an opening having a length in an arrangement direction of the nozzles greater than a width in a direction perpendicular to the arrangement direction. The tube section is in communication with the suction section and having a hollow tube shape whose longitudinal direction is parallel to the arrangement direction. The collection part collects the mist by separating the mist from air suctioned by the suction section. The suction device is configured and arranged to generate an air flow flowing from the suction section to the collection part.

Abstract: A recording apparatus includes a transportation mechanism that supports and transports a recording medium by a support surface; a recording head that is disposed in a region facing the support surface and is capable of ejecting an ink from a nozzle provided on an ink ejection surface to the recording medium; a suction unit that is capable of sucking the ink inside the nozzle; and a wiping unit that is provided as a separate body from the suction unit and is capable of wiping the ink ejection surface. The recording head is moved in a direction to be separated from the support surface when sucking the ink inside the nozzle. The suction unit is moved to a suction position facing the ink ejection surface of the recording head. The suction unit is moved below the recording head when wiping the ink ejection surface.

Abstract: A recording apparatus includes a transportation mechanism that supports and transports a recording medium by a support surface; a recording head that is disposed in a region facing the support surface and is capable of ejecting an ink from a nozzle provided on an ink ejection surface to the recording medium; a suction unit that is capable of sucking the ink inside the nozzle; and a wiping unit that is provided as a separate body from the suction unit and is capable of wiping the ink ejection surface. At least one of the suction unit and the wiping unit is provided on a farther downstream side of the recording medium in a transportation direction than the recording head and a gap between the one and the support surface is wider than a gap between the ink ejection surface and the support surface.

Abstract: An embodiment of the invention has been made to prevent an ink discharge failure or ink mixing caused by preliminary discharge executed with the ink discharge surface of a printhead capped. In the embodiment, to an inkjet printhead in which nozzle arrays are aligned in a direction different from that in which a plurality of nozzles are aligned the following preliminary discharge processing is executed. A cap including a suction port and an air communication port caps the ink discharge surface. After that, a suction recovery unit is driven, thereby performing preliminary discharge for nozzles, among the nozzles of the nozzle arrays, with a long distance to a straight line connecting the suction port with the air communication port before preliminary discharge for nozzles with a short distance to the straight line.

Abstract: An ink jet printing apparatus includes a print head having an ejection port surface with ejection ports formed therein from which ink is ejected, a cap covering the ejection port surface of the print head, and a suction unit for allowing a pump to generate negative pressure in the cap to suck ink from the print head. The suction unit has a valve provided in a communication tube joining the pump and the cap together. The suction unit sucks ink under a relatively low negative pressure and then switches the valve to suck the ink under a relatively high negative pressure.

Abstract: A liquid ejection apparatus includes a liquid ejection head having a plurality of nozzle units, a plurality of capping devices, a movement mechanism, a plurality of suctioning tubes, a suctioning mechanism, a connection device, and a control device. The control device controls the suctioning mechanism to suction fluid in the capping device corresponding to one of the nozzle units and the capping device corresponding to a different one of the nozzle units. In response to expiration of a predetermined time period, which is a predetermined amount of time that the suctioning mechanism generates a suctioning force, the control device controls to disconnect the capping device corresponding to the one of the nozzle units from the suctioning mechanism.

Abstract: An inkjet recording apparatus includes a recording head that includes a discharge port face on which a plurality of discharge ports for discharging ink is formed, a cap configured to cap the discharge port face, a suction recovery unit configured to suck ink from the recording head via the cap, and a control unit configured to control the suction recovery unit so that a suction amount changes based on elapsed time from when the discharge port face is capped by the cap, in a state where ink discharged from the recording head is present, wherein the control unit controls the suction recovery unit so that the suction amount decreases as the elapsed time increases when the elapsed times does not exceed a first time.

Abstract: An ultraviolet irradiation unit (100) is provided with an ultraviolet irradiation device (50) and an ink mist sucking and removing device (60). The ink mist sucking and removing device (60) includes a blower fan (62), an air filter (63) and a device cover (61) for forming an air flow passage whose one end is provided with a suction port (64) located in an upper vicinity of a printing object (80) and whose another end is provided with a ventilation port (58a) facing an LED drive circuit board (55). Air in the upper vicinity of a printing object (80) is sucked through the suction port (64) by the blower fan (62), ink mist included in the air is removed by the air filter (63), and cleaned air discharged through the ventilation port (58a) is blown to an LED circuit board (51), an LED drive circuit board (55).

Abstract: A liquid discharge device includes a liquid discharge head including a discharge port surface on which discharge ports for discharging liquid are formed, an electrothermal conversion element configured to generate energy for discharging liquid from the discharge ports, and a protection film configured to cover at least the electrothermal conversion element, and a cap configured to cover the discharge port surface, wherein the cap is arranged along the discharge port surface at a position opposite to the protection film via the discharge ports in a state where the cap covers the discharge port surface, and wherein the cap includes an electrode configured to be used to apply voltage between the protection film and the electrode.

Abstract: A suction device for an ejection head provided with a nozzle includes a cap capable of sealing a nozzle surface provided with the nozzle, a decompression pump serving as a decompression device, and a suction passage provided between the cap and the decompression pump. The negative pressure level of the suction passage set by the decompression pump are controlled on the basis of a volume of the suction passage such that a liquid with which the ejection head has been filled is sucked out from the nozzle.

Abstract: An inkjet printing apparatus is provided that is capable of suppressing an increase in discarded ink by a restore operation of a restore unit. The apparatus is an inkjet printing apparatus that prints an image using a print head having a plurality of ejecting ports for ejecting ink and includes a restore unit that restores the ink ejection function of the print head, and a control unit that controls the restore unit so as to perform a restore operation depending on a parameter involving a growth rate of air bubbles existing inside the print head that is filled with ink.