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公开(公告)号：US20230037462A1
公开(公告)日：2023-02-09
申请号：US17963225
申请日：2022-10-11
Applicant: LANDA CORPORATION LTD.
Inventor： Vitaly Burkatovsky
Abstract: Printing apparatus (20) includes a continuous blanket (24) and a set of motorized rollers (31), which advance the blanket at constant speed through an image area. Print bars (38) eject droplets of ink at respective locations onto the blanket in the image area. Monitoring rollers (42), in proximity to the locations of the print bars, contact the blanket to be rotated by blanket advancement. Each monitoring roller includes an encoder (44), which outputs a signal indicative of a rotation angle of the monitoring roller. A control unit (40) collects, during a calibration phase, the signal from the encoders over multiple rotations of the monitoring rollers, detects a deviation of the signal from the encoder relative to a clock signal having a predefined frequency, and computes runout correction factors. During an operational phase, the control unit applies the runout correction factors to synchronize the droplets ejection from the print bars.
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公开(公告)号：US11559982B2
公开(公告)日：2023-01-24
申请号：US17184411
申请日：2021-02-24
Applicant: LANDA CORPORATION LTD.
Inventor： Benzion Landa , Yehoshua Sheinman , Sagi Abramovich , Galia Golodetz , Gregory Nakhmanovich , Meir Soria
Abstract: A printing process is disclosed which comprises directing droplets of an ink onto an intermediate transfer member to form an ink image, the ink including an organic polymeric resin and a coloring agent in an aqueous carrier, and the transfer member having a hydrophobic outer surface so that each ink droplet in the ink image spreads on impinging upon the intermediate transfer member to form an ink film. The ink is dried while the ink image is being transported by the intermediate transfer member by evaporating the aqueous carrier from the ink image to leave a residue film of resin and coloring agent. The residue film is then transferred to a substrate. The chemical compositions of the ink and of the surface of the intermediate transfer member are selected such that attractive intermolecular forces between molecules in the outer skin of each droplet and on the surface of the intermediate transfer member counteract the tendency of the ink film produced by each droplet to bead under the action of the surface tension of the aqueous carrier, without causing each droplet to spread by wetting the surface of the intermediate transfer member.
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公开(公告)号：US20230016492A1
公开(公告)日：2023-01-19
申请号：US17788335
申请日：2020-12-09
Applicant: LANDA CORPORATION LTD.
Inventor： Benzion Landa , Zohar Goldenstein , Tomer Schindler , Ronen Lalezar
Abstract: A method of printing includes, applying to an intermediate transfer member (ITM) (44), one or more fluids that include at least a printing fluid for forming an image on the ITM (44). At least part of the image is transferred from the ITM (44) to a target substrate (50). Residues of the one or more fluids that were not transferred to the target substrate (50) and remained on the ITM (44), are transferred from the ITM (44) to one or more rotatable elements (112), and the residues are removed from the one or more rotatable elements (112).
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公开(公告)号：US20230001710A1
公开(公告)日：2023-01-05
申请号：US17894172
申请日：2022-08-24
Applicant: Landa Corporation Ltd.
Inventor： Benzion Landa , Tomer Goral , Vitaly Burkatovsky
IPC: B41J3/46 , B41J2/005 , B41J2/175 , B41J29/393
Abstract: A system includes: (a) a flexible intermediate transfer member (ITM) including multiple layers and markers including: (i) a structure engraved, in at least one of the layers, at respective marking locations along the ITM, and (ii) at least part of the structure is filled with a filling material that changes one or both of optical and magnetic properties of the ITM, the ITM includes an outer layer for receiving ink droplets, and transferring the ink image to a target substrate, (b) sensing assemblies disposed at respective predefined locations relative to the ITM, and configured to produce signals indicative of respective positions of the markers, and (c) a processor, which is configured to receive the signals, and based on the signals, to control a deposition of the ink droplets on the ITM, and the processor is configured to detect a deformation of the ITM based on the first and second signals.
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公开(公告)号：US11511536B2
公开(公告)日：2022-11-29
申请号：US16765878
申请日：2018-11-13
Applicant: LANDA CORPORATION LTD.
Inventor： Vitaly Burkatovsky
Abstract: Printing apparatus (20) includes a continuous blanket (24) and a set of motorized rollers (31), which advance the blanket at a constant speed through an image area. One or more print bars (38) eject droplets of ink at respective locations onto the blanket in the image area. One or more monitoring rollers (42), in proximity to the locations of the print bars, contact the blanket so as to be rotated by advancement of the blanket. Each monitoring roller includes an encoder (44), which outputs a signal indicative of a rotation angle of the monitoring roller. A control unit (40) collects, during a calibration phase, the signal from the encoders over multiple rotations of the monitoring rollers and computes runout correction factors. During an operational phase, the control unit synchronizes ejection of the droplets from the print bars using the computed runout correction factors.
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公开(公告)号：US20220274394A1
公开(公告)日：2022-09-01
申请号：US17694702
申请日：2022-03-15
Applicant: LANDA CORPORATION LTD.
Inventor： Helena CHECHIK , Shoham LIVADERU , Matan BAR-ON , Zohar GOLDENSTEIN
Abstract: A friction reduction system for reducing friction of an intermediate transfer member (ITM) of a printing system, while the ITM is guided along the printing system by a guiding arrangement. The friction reduction system includes a fluid reservoir mounted within the printing system, a fluid depositing arrangement disposed along the ITM, and a control mechanism, adapted to control depositing of fluid, from the fluid depositing arrangement onto the guiding arrangement or onto at least a portion of the ITM. Depositing of the fluid reduces friction between the ITM and the guiding arrangement.
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公开(公告)号：US20220119659A1
公开(公告)日：2022-04-21
申请号：US17414087
申请日：2020-01-01
Applicant: LANDA CORPORATION LTD.
Inventor： Benzion LANDA , Helena CHECHIK , Einat TIROSH , Moshe LEVANON , Gal FINKELSTEIN , Omer ASHKENAZI , On MERO , Dor LEVY
IPC: C09D11/322 , B41M5/00 , B41M5/025 , C09D11/38
Abstract: The present disclosure relates to formulations for use with an intermediate transfer members of indirect printing systems and printing methods utilizing same. The present disclosure further relates to intermediate transfer members having a release layer surface covered with the formulations of the invention. The present disclosure also relates to printed substrates, printed articles and printed patterns produced using the formulations of the invention and to kits comprising the formulations.
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公开(公告)号：US11267239B2
公开(公告)日：2022-03-08
申请号：US16764330
申请日：2018-11-16
Applicant: LANDA CORPORATION LTD.
Inventor： Uriel Pomerantz , Vitaly Burkatovsky
Abstract: A printing system comprises an intermediate transfer member (ITM), an image forming station, a conveyer for driving rotation of the ITM, and a treatment station disposed downstream of the impression station and upstream of the image forming station configured for coating the ITM surface with a layer of a liquid treatment formulation, the treatment station comprising an applicator for applying the liquid treatment formulation to the ITM, a coating thickness-regulation assembly comprising a plurality of blades, a blade-replacement mechanism, and a blade-replacement controller for controlling the blade-replacement mechanism.
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公开(公告)号：US11235568B2
公开(公告)日：2022-02-01
申请号：US16784208
申请日：2020-02-06
Applicant: LANDA CORPORATION LTD.
Inventor： Benzion Landa , Aharon Shmaiser , Alon Siman-Tov , Alon Levy
IPC: B41J2/01
Abstract: An indirect printing system is disclosed having an intermediate transfer member (ITM) in the form of an endless belt that circulates during operation to transport ink images from an image forming station. Ink images are deposited on an outer surface of the ITM by one or a plurality of print bars. At an impression station, the ink images are transferred from the outer surface of the ITM onto a printing substrate. In some embodiments, the outer surface of the ITM 20 is maintained within the image forming station at a predetermined distance from the one or each of the print bars 10, 12, 14 and 16 by means of a plurality of support rollers 11, 13, 15, 17 that have a common flat tangential plane and contact the inner surface of the ITM. In some embodiments, the inner surface of the ITM is attracted to the support rollers, the attraction being such that the area of contact between the ITM and each support roller is greater on the downstream side than the upstream side of the support roller, referenced to the direction of movement of the ITM.
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公开(公告)号：US11179928B2
公开(公告)日：2021-11-23
申请号：US16883617
申请日：2020-05-26
Applicant: LANDA CORPORATION LTD.
Inventor： Aharon Shmaiser , Sagi Moskovich , Zohar Goldenstein , Matan Bar-On , Yiftach Katzir , Haggai Karlinski , Alon Siman-Tov , Yehoshua Sheinman , Daniel Alkhanati , Elad Pur Buchray
Abstract: Some embodiments relate to printing system is described that has an intermediate transfer member (ITM) in the form of a seamed endless belt for transporting an ink image from an image forming station, at which an ink image is deposited on ITM, to an impression station, where the ink image is transferred onto a printing substrate. Two drive members are provided for movement in synchronism with one another. Rotation of the drive members during installation of a new ITM serves to thread the strip through the printing system by pulling the strip from its leading end. Alternatively or additionally, indirect printing system comprising the ITM and an image forming station at which droplets of ink are applied to the ITM to form ink images thereon is disclosed. One or more blowing mechanisms (e.g. associated with the image forming station) are disclosed herein.
