Riso Kagaku Patente

An inkjet head includes nozzles arranged at different height positions, respectively. A purging unit is configured to discharge ink from the nozzles by positive pressure purging. A controller is configured to: cause the purging unit to discharge the ink from the nozzles by the positive pressure purging at a purging pressure suiting a reference nozzle that is a nozzle other than a nozzle of the nozzles at a highest position in maintenance of the inkjet head; and then perform flushing in each nozzle of the nozzles at positions above the reference nozzle such that the higher the position of the nozzle is, the greater an ejection amount of the ink is.

A conveyance device (1) includes a plurality of turntables (11, 12, 13, 14) and a circulation mechanism (20). A processing medium (B) as a three-dimensional object is placed on the plurality of turntables (11-14), and each of the turntables (11-14) is rotatable. The circulation mechanism (20) circulates and moves the plurality of turntables (11-14) on a circulation path (R) including a processing position (P2) where the processing medium (B) faces a processing device (110).

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A print system includes: a printer; and a server connected to the printer via a network and configured to cause the printer to perform printing on a three-dimensional print medium. The server includes a controller configured to: store an advertisement table associating market information including at least product information with advertisement image data obtained by converting a three-dimensional image into two dimensions or store a learned model where data associating market information including at least product information with advertisement image data obtained by converting a three-dimensional image into two dimensions is learned as training data; extract, based on the stored advertisement table or the stored learned model, the advertisement image data corresponding to the market information relevant to transaction information of a purchased product; and process the extracted advertisement image data such that an advertisement image of the extracted advertisement image data appears three-dimensional from a prescribed virtual viewpoint according to a three-dimensional shape of the three-dimensional print medium with respect to at least two surfaces of the three-dimensional print medium where the purchased product is packaged.

A method for producing a printed textile item, the method including applying a treatment liquid containing an aggregating agent to a fabric using an inkjet method, applying a white ink having a charge density of at least 30 µeq/g, using a step of using an inkjet method and a wet-on-wet method, to the fabric to which the treatment liquid has been applied, applying a color ink for which the Young's modulus of the dried coating film is not more than 3.0 MPa, using an inkjet method and a wet-on-wet method, to the fabric to which the white ink has been applied.

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An inkjet printer includes an inkjet head including nozzles arranged in a nozzle array and configured to eject ink. While moving relative to a print medium, the inkjet head is configured to perform printing on a printing surface of the print medium by ejecting ink from the nozzles for every line of an image along a direction orthogonal to a direction of the relative movement, the printing surface being non-horizontal and parallel to the direction of the relative movement. The nozzle array is inclined such that positions of the nozzles are lower toward an upstream side in the direction of the relative movement of the print medium as viewed from the inkjet head.

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A system is equipped with a classifying unit (11) that obtains image data and classifies the types of objects which are included in the image data, and an image processing unit (12) that administers an image process on the image data according to the types of objects classified by the classifying unit (11) and color information of a print medium on which the image data is to be printed.

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A medium ejection apparatus (30) includes a placement mount (31) on which media (M) are placed, a restriction part (32, 33 and 34) that moves between a restriction position (P2) at which the restriction part restricts media ejected toward the placement mount and a retracted position (P1) retracted from the restriction position, and a control unit (37) that controls the restriction part by adjusting a restriction frequency on the basis of at least either an amount of movement of the restriction part from the retracted position to the restriction position or ejection intervals at which the media are ejected toward the placement mount, the restriction frequency being a frequency with which the restriction part performs a restriction operation for the media.

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An ink is provided which can prevent the deformation and degradation of resin products by printed items, and is also suitable for inkjet printing. The oil-based inkjet ink contains a colorant and a fatty acid ester-based solvent represented by general formula (1) shown below and having 12 to 23 carbon atoms in one molecule. (In general formula (1), each of R 1 and R 2 independently represents an alkyl group, and at least one of the alkyl groups of R 1 and R 2 is a branched alkyl group having a side chain of at least 4 carbon atoms.)

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A second inkjet head (26B), a second platen (27B), and a second pair of conveyance rollers (28B) configured to convey a sheet toward the second platen downward with respect to a horizontal direction are arranged at lower positions than a first inkjet head (26A) arranged upstream of the second inkjet head, a first platen (27A) arranged upstream of the second platen, a first pair of conveyance rollers (28A) arranged upstream of the second pair of conveyance rollers and configured to convey the sheet toward the first platen downward with respect to the horizontal direction, respectively.