Digital halftoning with dots representing a spiral

    公开(公告)号:US11568189B2

    公开(公告)日:2023-01-31

    申请号:US17264525

    申请日:2019-04-30

    申请人: AGFA OFFSET BV

    发明人: Rudolf Bartels

    摘要: A halftone raster image, suitable for rendering a continuous-tone image, which comprises a plurality of dots, arranged according a screen ruling and screen angle. Said dots comprise (i) image pixels arranged as a first arc or as a plurality of arcs which together represent a first spiral, and (ii) non-image pixels arranged as a second arc or as a plurality of arcs which together represent a second spiral. Small displacements of the feed point of said dots away from the theoretical centre of a halftone dot, defined by said screen ruling and screen angle, enable a higher image quality and less patterns in said halftone raster image.

    PRINTING PLATE FOR MONOTYPE PRINTS HAVING VISCOELASTIC GELS AND METHOD FOR ITS USE

    公开(公告)号:US20220176725A1

    公开(公告)日:2022-06-09

    申请号:US17677026

    申请日:2022-02-22

    申请人: Robert D. Kross

    发明人: Robert D. Kross

    IPC分类号: B41N1/00 B41N1/12

    摘要: A printing plate for monotype prints includes a viscoelastic gel composition having a viscoelastic polymer selected from a hydrogenated poly-isoprene/butadiene polymer, poly(styrene-butadiene-styrene), poly(styrene-butadiene)n, poly(styrene-isoprene-styrene), poly(styrene-isoprene)n, poly(styrene-ethylene-propylene), poly(styrene-ethylene-propylene-styrene)n, poly(styrene-ethylene-butylene-styrene)n, poly(styrene-ethylene-butylene), poly(styrene-ethylene-propylene)n, poly(styrene-ethylene-butylene)n, polystyrene, polybutylene, poly(ethylene-propylene), poly(ethylene-butylene), polypropylene, polyethylene, polyurethane and silicone, and a combination thereof, and a plasticizing oil. The viscoelastic gel composition has a smooth surface and is formed as a sheet and shaped for use as a printing plate. A method for using the elastomeric gel printing plates of the present invention is also provided.

    DIGITAL HALFTONING WITH DOTS REPRESENTING A SPIRAL

    公开(公告)号:US20210295123A1

    公开(公告)日:2021-09-23

    申请号:US17264525

    申请日:2019-04-30

    申请人: AGFA NV

    发明人: Rudolf Bartels

    IPC分类号: G06K15/02 B41N1/00 B41C1/10

    摘要: A halftone raster image, suitable for rendering a continuous-tone image, which comprises a plurality of dots, arranged according a screen ruling and screen angle. Said dots comprise (i) image pixels arranged as a first arc or as a plurality of arcs which together represent a first spiral, and (ii) non-image pixels arranged as a second arc or as a plurality of arcs which together represent a second spiral. Small displacements of the feed point of said dots away from the theoretical centre of a halftone dot, defined by said screen ruling and screen angle, enable a higher image quality and less patterns in said halftone raster image.

    Lithographic imaging and printing without defects of electrostatic origin

    公开(公告)号:US10752037B2

    公开(公告)日:2020-08-25

    申请号:US15221996

    申请日:2016-07-28

    申请人: Presstek, LLC

    IPC分类号: B41N1/14 B41C1/10 B41N1/00

    摘要: Embodiments of the present invention involve three-layer printing members having a central layer that is non-conductive yet abalatable at commercially realistic fluence levels. In various embodiments, the central layer is polymeric with a dispersion of nonconductive carbon black particles therein at a loading level sufficient to provide at least partial layer ablatability and water compatibility of the resulting ablation debris.

    Printing plate, laminated ceramic electronic component producing method, and printer

    公开(公告)号:US10449795B2

    公开(公告)日:2019-10-22

    申请号:US16162052

    申请日:2018-10-16

    摘要: A print pattern of a printing plate used in intaglio printing includes plural partition walls and a groove-shaped cell unit. The plural partition walls are continuously extended in a printing direction, and arranged at predetermined intervals in an orthogonal direction. The cell unit is formed between the partition walls adjacent to each other, and a printing paste (conductive paste) is retained in the cell unit. Plural printing direction walls that are arranged in a zigzag manner in the printing direction are coupled to each other by a coupling walls that are arranged in the printing direction walls adjacent to each other in the printing direction, thereby forming the partition wall.

    Printing plate, laminated ceramic electronic component producing method, and printer

    公开(公告)号:US10131175B2

    公开(公告)日:2018-11-20

    申请号:US14988328

    申请日:2016-01-05

    摘要: A print pattern of a printing plate used in intaglio printing includes plural partition walls and a groove-shaped cell unit. The plural partition walls are continuously extended in a printing direction, and arranged at predetermined intervals in an orthogonal direction. The cell unit is formed between the partition walls adjacent to each other, and a printing paste (conductive paste) is retained in the cell unit. Plural printing direction walls that are arranged in a zigzag manner in the printing direction are coupled to each other by a coupling walls that are arranged in the printing direction walls adjacent to each other in the printing direction, thereby forming the partition wall.