Abstract: A compact ink drying apparatus is capable of drying ink ejected to a resin substrate. The ink drying apparatus has a hot air dryer, a hot air supplying part, and an exhausting part. The hot air dryer has a drying furnace, a substrate conveying path formed as a spirally shaped path in the drying furnace, and substrate drying ducts blowing hot air to a surface of a resin substrate on which ink is ejected conveyed along the substrate conveying path to heat ink and exhausting water vapor generated by heating of ink. The hot air supplying part is outside the drying furnace and supplies hot air into the substrate drying ducts, and the exhausting part is outside the drying furnace and exhausts air in the drying furnace through the substrate drying ducts.

Abstract: A compact ink drying apparatus is capable of drying ink ejected to a resin substrate. The ink drying apparatus has a hot air dryer, a hot air supplying part, and an exhausting part. The hot air dryer has a drying furnace, a substrate conveying path formed as a spirally shaped path in the drying furnace, and substrate drying ducts blowing hot air to a surface of a resin substrate on which ink is ejected conveyed along the substrate conveying path to heat ink and exhausting water vapor generated by heating of ink. The hot air supplying part is outside the drying furnace and supplies hot air into the substrate drying ducts, and the exhausting part is outside the drying furnace and exhausts air in the drying furnace through the substrate drying ducts.

Abstract: The electro-photographic sheet of paper duplex printing machine includes a sheet supply section, a sheet positioning section which positions sheets and sends out sheets to a backup roller in an electro-photographic printing section, the electro-photographic printing section transfers an image which has been transferred onto the transfer roller onto the sheet, a chain delivery section, a delivery section and a sheet carrying section for turnover. The chain delivery section selectively transfers printed sheets, which has been transferred from the backup roller to the delivery section or sheet carrying section for turnover. The sheet carrying section for turnover supplies one side printed sheet to the sheet positioning section. The sheet fed from the sheet supply section and one side printed sheet fed from the sheet carrying section for turnover are alternately carried to the sheet positioning section and the toner image on the printed sheet is fixed by the fixing device.

Abstract: The electro-photographic sheet of paper duplex printing machine includes a sheet supply section, a sheet positioning section which positions sheets and sends out sheets to a backup roller in an electro-photographic printing section, the electro-photographic printing section transfers an image which has been transferred onto the transfer roller onto the sheet, a chain delivery section, a delivery section and a sheet carrying section for turnover. The chain delivery section selectively transfers printed sheets, which has been transferred from the backup roller to the delivery section or sheet carrying section for turnover. The sheet carrying section for turnover supplies one side printed sheet to the sheet positioning section. The sheet fed from the sheet supply section and one side printed sheet fed from the sheet carrying section for turnover are alternately carried to the sheet positioning section and the toner image on the printed sheet is fixed by the fixing device.

Abstract: An arm for guiding paper fed along a paper feed path is swingably supported at its base end portion on one side of the winding core. The arm is provided with a free roll, on which the paper is guided to pass onto the winding core. At its free end portion, the arm has a roller rotatably mounted thereon which constitutes a body of rotation contacting with the paper roll so that with the winding core rotated and with the roller pressed against the paper roll the paper may be wound up into the paper roll on the rotating winding core without the occurrence of a paper winding wrinkle, whereby with a distance held constant at all times between the feed roll and the roller along a paper winding path, paper winding without such wrinkling can be achieved to yield a paper roll that is large in its maximum diameter.

Abstract: A label paper processing apparatus includes a paper supply unit for supplying and feeding label paper, a digital printing unit for printing the label paper, a laser processing unit, and a pair of loop forming unit disposed between the paper supply unit and the digital printing unit, and between the digital printing unit and the laser processing unit, respectively, each forming a loop of the label paper. The laser processing unit is designed to half-cut the printed label paper and to form cutouts of a shape along a printed cutting locus with a laser beam so as to scan and trace the printed cutting locus, thereby facilitating control in half-cutting of the label paper. The loop forming unit is designed to form a loop of the label paper and to hold a length of the loop substantially constant so as to control feeding of the label paper.

Abstract: Fluttering of paper traveling opposite to and parallel to a nozzle width region of an ink jet head is held down, thereby improving the printing quality. An ink jet recording apparatus comprises an ink jet printer including printing units whereby a sheet of paper traveling in a paper passage in the form of an arch shaped by a plurality of guide rollers is printed by a plurality of ink jet heads. The ink jet heads of the printing units comprise ink jet heads of on-demand type having a plurality of nozzle rows of a nozzle width region in a direction of travel of paper. The paper passage opposite to nozzle faces of each ink jet head nozzle defined by two guide rollers positioned at an upstream and at a downstream side in the direction of travel of paper, respectively.

Abstract: An inkjet recording apparatus of a line head type where a resolution can be changed simply, and locating of nozzles can be performed simply and accurately is provided.

Abstract: A drum-type drying device according to the invention includes a cylindrical drum section that is rotatably supported and rotated by winding a base material on the drum section, engaging portions that are disposed in an inner cavity of the drum section, and a heating section that includes engaged portions detachably engaged with the engaging portions.

Abstract: The present invention is directed to an inkjet recording apparatus 100 capable of performing recording continuously on both surfaces of a web 1, including a plurality of recording heads H1 to H8 disposed on a substrate, driers 5a and 5b for drying the web 1 recorded by the recording heads H1 to H8, and guide rollers A1 to A8, B1 to B8, and G1 to G8 for guiding the web 1, in which a traveling path of the web 1 is switchable so that the web 1 passes between any selected adjacent ones of the recording heads H1 to H8, the recording head upstream of the position where the web passes performs recording on one surface 1a of the web 1, and the recording head downstream of the position where the web 1 passes performs recording on the other surface 1b of the web 1, and an inkjet recording method using the same.

Abstract: A label paper processing apparatus includes a paper supply unit for supplying and feeding label paper, a digital printing unit for printing the label paper, a laser processing unit, and a pair of loop forming unit disposed between the paper supply unit and the digital printing unit, and between the digital printing unit and the laser processing unit, respectively, each forming a loop of the label paper. The laser processing unit is designed to half-cut the printed label paper and to form cutouts of a shape along a printed cutting locus with a laser beam so as to scan and trace the printed cutting locus, thereby facilitating control in half-cutting of the label paper. The loop forming unit is designed to form a loop of the label paper and to hold a length of the loop substantially constant so as to control feeding of the label paper.

Abstract: An inkjet recording apparatus 10 includes a first plate 20a having line heads 11a aligned thereon, a coupling portion 21 jointed to the first plate 20a, a drive device 30 sliding the first plate 20a via the coupling portion 21 from a waiting position P1 in which the line heads wait to a recording position P2 in which recording is performed on a recording medium 1, and a second plate 20b having at least one line head 11b thereon and being attachable to and detachable from the coupling portion 21, wherein only the first plate 20a is slidable when the second plate 20b is detached from the coupling portion 21, and the first plate 20a and the second plate 20b are integrally slidable when the second plate 20b is attached to the coupling portion 21.

Abstract: A recording method using an inkjet recording apparatus 10 which performs recording on a travelling material to be recorded by a line head, including: a first step of setting resolutions to design regions of image data having a plurality of different design regions; a second step of setting a travelling speed of the material to be recorded so as to correspond to each of the resolutions; and a third step of setting acceleration/deceleration of the material to be recorded in order to connect different travelling speeds of the travelling speed, wherein the travelling speed of the material to be recorded is changed during continuous recording by the line head.

Abstract: A duplex printing apparatus comprising: a turnover unit 16 arranged at one of a site between the paper supply unit 2 and the feed roll unit 6a on the paper supply side and a site between the paper takeup unit 5 and the feed roll unit 6b on the paper takeup side, whereby the web of paper 3 is turned over through and is allowed to bypass the turnover unit; a mark sensor 15 arranged upstream in a direction of travel of the paper for detecting a timing mark 14 printed by the digital printer 4 on an under surface of the paper; and a control unit 7 operable in response to a detection value from the mark sensor for controlling the digital printer so that on the upper surface of the paper there is printed an image corresponding to an image printed on the under surface of the paper.

Abstract: An arm for guiding paper fed along a paper feed path is swingably supported at its base end portion on one side of the winding core. The arm is provided with a free roll, on which the paper is guided to pass onto the winding core. At its free end portion, the arm has a roller rotatably mounted thereon which constitutes a body of rotation contacting with the paper roll so that with the winding core rotated and with the roller pressed against the paper roll the paper may be wound up into the paper roll on the rotating winding core without the occurrence of a paper winding wrinkle, whereby with a distance held constant at all times between the feed roll and the roller along a paper winding path, paper winding without such wrinkling can be achieved to yield a paper roll that is large in its maximum diameter.

Abstract: A digital printing method includes printing timing marks for each of images; in reprinting after printing is temporarily suspended, feeding a web of paper to travel backwards so that a plurality of images and timing marks printed thereon before printing is temporarily suspended move towards upstream of a digital printer and thereafter feeding the web of paper to travel forwards again, and counting by mark sensors, upstream of the digital printer, the number of such timing marks moving in each of the backward feed and forward re-feed of the web of paper; and when the number of counts of the timing marks counted in the forward re-feed coincides with the number of counts of the timing marks counted in the backward feed, reinitiating to print consecutive images from a position following an image last printed before printing is temporarily suspended.

Abstract: Images, one per page, are printed by a digital printer consecutively on a web of paper fed to travel forward. A timing mark is printed for each image. In case printing is temporarily halted, the web of paper is first fed backward, and then it is fed forward again. The number of timing marks in each of the backward feed and forward feed of the web of paper are counted. When the number of counts of the timing marks counted in the forward feed coincides with the number of counts of the timing marks counted earlier in the backward feed, printing of consecutive images is reinitiated from a position immediately following an image last printed before printing was temporarily halted.

Abstract: A recording method using an inkjet recording apparatus, which can obtain a recorded material excellent in image quality and is excellent in productivity is provided. The present invention is a recording method using an inkjet recording apparatus 10 which performs recording on a travelling material to be recorded 1 by a line head 4, including: a first step S1 of setting resolutions to design regions of image data having a plurality of different design regions; a second step S2 of setting a travelling speed of the material to be recorded 1 so as to correspond to each of the resolutions; and a third step S3 of setting acceleration/deceleration of the material to be recorded 1 in order to connect different travelling speeds of the travelling speed, wherein the travelling speed of the material to be recorded 1 is changed during continuous recording by the line head 4.

Abstract: To provide an inkjet recording apparatus capable of preventing nozzle clogging, capable of aligning the nozzle positions of line heads precisely and easily, and capable of adjusting the number of the line heads. The present invention is an inkjet recording apparatus 10 including a first plate 20a having a plurality of line heads 11a aligned thereon, a coupling portion 21 jointed to the first plate 20a, a drive device 30 sliding the first plate 20a via the coupling portion 21 from a waiting position P1 in which the line heads wait to a recording position P2 in which recording is performed on a recording medium 1, and a second plate 20b having at least one line head 11b thereon and being attachable to and detachable from the coupling portion 21, wherein only the first plate 20a is slidable when the second plate 20b is detached from the coupling portion 21, and the first plate 20a and the second plate 20b are integrally slidable when the second plate 20b is attached to the coupling portion 21.

Abstract: A duplex printing apparatus designed and adapted to efficiently print on both surfaces of a web of paper using a single digital printer.