Abstract: A wiper that extends toward an inkjet head and wipes a nozzle surface of the inkjet head includes: a base section extending in an extension direction of the wiper, an inclined surface continuous with the base section and having, in a direction in which the wiper travels during wiping, a thickness that gradually decreases toward the extension direction; and a leading-end projecting section thinner than the base section and provided at a leading end of the wiper in such a manner as to be continuous with the inclined surface and project in the extension direction.

Abstract: A print data generating apparatus includes a machine learning unit that has a learned model which is obtained by inputting and conducting machine teaming of the relationships among data size of document data of a plurality of print jobs, print setting conditions, RIP setting conditions and printing speeds when the document data are printed by a printing unit; a printing speed predicting unit that predicts the printing speed of a print job to be printed by inputting the data size of the document data of the print job to be printed, the print setting conditions, and arbitrary RIP setting conditions into the learned model; and an optimized RIP setting condition determining unit that determines optimized RIP setting conditions that result in the printing speed which is predicted by the printing speed predicting unit approaching or becoming greater than or equal to a processing seed of the printing unit.

Abstract: A screen-frame attachment apparatus to which a screen frame for holding a screen is to be attached, the screen-frame attachment apparatus including: an apparatus-side positioning part that positions the screen frame, the apparatus-side positioning part being associated with a frame-side positioning part provided on a periphery of the screen frame, wherein the apparatus-side positioning part positions the screen frame in accordance with a projection provided on one of the apparatus-side positioning part or the frame-side positioning part being inserted into a recess provided in another of the two parts.

Abstract: A liquid collection device includes: a suction tank configured to suck and collect liquid accumulated in a liquid reservoir; a suction passage connecting the liquid reservoir and an inlet opened in a lower portion of the suction tank to each other; a suctioner configured to generate a negative pressure in the suction tank and suck the liquid from the liquid reservoir into the suction tank via the suction passage by using the generated negative pressure; and a controller configured to control the suctioner to terminate suction of the liquid into the suction tank upon continuance of a state where a pressure in the suction tank is equal to or greater than a threshold for a prescribed time or more after start of the suction.

Abstract: An aqueous inkjet ink is disclosed which contains a colorant, a polyoxyethylene monoallyl ether, and water.

Abstract: A method for producing a printed item including discharging two or more inks by an inkjet method toward a recording medium to form an image is disclosed, wherein the two or more inks include a first oil-based inkjet ink containing a first colorant and a non-aqueous solvent and having an ink surface tension of less than 27.0 mN/m, and a second oil-based inkjet ink containing a second colorant and a non-aqueous solvent and having an ink surface tension of 27.0 mN/m or greater, and the method includes discharging the first oil-based inkjet ink toward the recording medium at a discharge volume of at least 20 pl per one liquid droplet to form dots with the first oil-based inkjet ink, and subsequently discharging the second oil-based inkjet ink toward the recording medium at a discharge volume of less than 20 pl per one liquid droplet so as to overlap with the dots formed with the first oil-based inkjet ink.

Abstract: A desired image is printed in a non-contact state on a print object surface with a flyable printer in which a printing device is mounted in a flying object. The printer includes a flying object having a body part, a controller, and a drive part; and a print head, mounted in the flying object, to print a desired image in a non-contact state, on a print object which the flying object has approached. The print head is driven while a gap is maintained at a predetermined value by bringing a gap adjustment part attached to the body part of the flying object into contact with the print object or by accurate control of the drive part. It is possible to print a desired image in good image quality regardless of the state of the surface of the print object.

Abstract: Disclosed is an oil-based inkjet ink containing a colorant and a non-aqueous solvent, wherein the non-aqueous solvent contains at least 15% by mass but not more than 100% by mass, relative to the total mass of the non-aqueous solvent, of an organosilicon compound having 2 to 6 silicon atoms in one molecule, having an organic group in which a carbon atom is bonded directly to a silicon atom and in which the total number of carbon atoms and oxygen atoms is at least 4, and having a total number of carbon atoms and oxygen atoms, contained within all of the organic groups in which the total number of carbon atoms and oxygen atoms is at least 4, that is from 4 to 20 within one molecule.

Abstract: A discharge tray for loading thereon sheets to be discharged at a predetermined discharge angle by a discharge roller pair is provided. The discharge tray includes a loading surface provided at a predetermined first inclination angle with respect to a discharge direction of a sheet by the discharge roller pair so that a top of the sheet discharged by the discharge roller pair comes into contact with the loading surface, and a guide unit provided on the loading surface at a second inclination angle with respect to the loading surface so as to partially lift up the loaded sheet from the loading surface.

Abstract: An image forming apparatus includes a conveyer belt that transports sheets, a platen plate that supports the conveyer belt to be slidable, a head holding unit that holds inkjet heads ejecting ink to sheets transported on the conveyer belt and being arrayed in a direction orthogonal to a transport direction of the conveyer belt, and a pair of gap adjustment units that have ends on one side being respectively attached to both ends of a lower surface of the head holding unit and ends on the other side being attached to an upper surface of the platen plate to adjust a gap between the lower surface of the head holding unit and the upper surface of the platen plate.

Abstract: An inkjet printer includes: a conveyer configured to convey a print medium; an inkjet head configured to eject ink to the print medium conveyed by the conveyer; a flow adjuster configured to adjust strength of an air flow in an under-head space which is a space between the inkjet head and the conveyer; and a controller configured to control the flow adjuster such that the smaller a satellite droplet generated from the ink ejected by the inkjet head is, the stronger the air flow in the under-head space is.

Abstract: A medium supply apparatus includes: a placement mount on which a plurality of media are placed; a transportation mechanism that transports an uppermost medium of the plurality of media placed on the placement mount; and an aspiration mechanism that aspirates air to attract the uppermost medium to the transportation mechanism, wherein the aspiration mechanism includes a blocking means for blocking air aspiration performed by the aspiration mechanism, in such a manner as to prevent another medium of the plurality of media that is located below the uppermost medium from being attracted to the transportation mechanism.

Abstract: A meandering control device includes: a detector configured to detect a position of an edge of a web being conveyed in a width direction of the web; a corrector configured to correct a position of the web being conveyed in the width direction; and a controller including a digital filter configured to perform filtering on a position signal indicating the position of the edge detected by the detector to attenuate a noise component. The controller is configured to drive the corrector to correct the position of the web in the width direction based on the position signal after the filtering.

Abstract: An inkjet printing apparatus that performs printing by ejecting ink from an ink jet head onto a print medium includes a drying unit for drying a liquid which is contained in the print medium, a table on which the print medium is placed; and a gas flow generating unit for generating a gas flow in a space which is formed between the table and a surface of the print medium toward the side of the table.

Abstract: Density of each pixel is specified from a test pattern for measurement of density distribution, a density profile indicating distribution of the specified density for each pixel is acquired, and a pixel region including a “nozzle of interest” having a certain density difference or more from surrounding pixels and pixels on both sides thereof is extracted as a nozzle region of interest from the acquired density profile. Filters B to E, other than a filter A to be applied for density smoothing processing of pixels that do not belong to the nozzle region of interest, are applied for the density smoothing processing of the pixels in the nozzle region of interest, to generate a profile of a density correction value for eliminating a density difference between respective pixels based on the density profile after the smoothing processing.

Abstract: The ink jet printing apparatus includes: an ink jet head having a nozzle row in which a plurality of nozzles for ejecting ink are arranged and a nozzle guard with an opening at a portion corresponding to the nozzle row, provided at a position via a gap with respect to an ink ejection surface of the nozzle row; a sheet shaped absorbing member having a size that covers a range of the opening of the nozzle guard; and a capping unit that presses the absorbing member onto the opening of the nozzle guard.

Abstract: An agitation device includes: a first container configured to house a liquid; a second container configured to house the liquid transferred from the first container; a transfer agitation unit configured to selectively execute a transfer operation of transferring the liquid from the first container to the second container and an agitation operation of agitating the liquid in the second container by using a common drive source; and a controller configured to control the transfer agitation unit to alternately execute the transfer operation and the agitation operation upon transferring the liquid from the first container to the second container.

Abstract: A transfer device includes: a first container including a bag portion configured to house liquid; a second container configured to house the liquid transferred from the first container; a transfer unit configured to transfer the liquid from the first container to the second container; and a controller configured to control the transfer unit to intermittently and repeatedly execute a transfer operation of starting transfer of the liquid and then completing the transfer before a side of the bag portion toward the transfer unit transitions to a suction contact state upon transferring the liquid from the first container to the second container.

Abstract: An ink mist recovery device allows suction of ink mist with uniform suction force irrespective of a position on a confronting sheet. The ink mist recovery device includes a recovery casing having multiple suction ports confronting a sheet, and a suction unit connected to the recovery casing. At least one of a size of each of the suction ports and a first suction distance from each of the suction ports to a suction slit is set in accordance with a second suction distance from the suction unit to the suction slit via each of the suction ports so that the suction force is kept uniform at the respective positions on the sheet corresponding to the suction ports. The mist suction force is made uniform over the entire width of the suction slit to improve quality of the printed image without sucking ink droplets required to land.

Abstract: A liquid agent mist recovery device for a liquid agent application device prevents dripping of a droplet formed from a sucked liquid agent mist onto a sheet. The ink mist recovery device installed downstream of an inkjet head includes a recovery casing with an opening for introducing the mist. The opening is communicated with a recovery hole connected to a suction fun, and positioned apart from an upstream wall surface by a distance corresponding to receiving portions for receiving a droplet trickling from the wall surface, and apart from a downstream wall surface so that air introduced from downstream obstructs the flow of the upstream liquid agent mist for guiding into the recovery hole. The liquid agent mist from upstream is securely introduced and recovered. The liquid agent mist trickling from the wall surface of the recovery hole is received by the receiving portion rather than dripping onto the sheet.