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公开(公告)号：US20240017541A1
公开(公告)日：2024-01-18
申请号：US18039766
申请日：2021-11-30
发明人： Jörg Wolterink , Thomas Hänsel , Christian Greve , Frank Grewling , Karsten Stubbe-Thierer , Wolfgang Sievers , Peter Morisse
CPC分类号： B41F33/0009 , G06T7/13 , G06T7/0004 , B41M1/04 , G06T2207/30144
摘要： Methods, systems, and non-transitory memory media embodying computer readable instructions for minimizing voids in front of a trailing edge of a solid rendition or linework print region printed using a photocurable flexographic printing plate having a printing surface corresponding to information in an image file. At least one solid rendition or linework image region corresponding to the solid rendition or linework print region has a pattern of “on” and “off” single pixels that correspond to openings formed by an imager in a mask layer of the plate. Micro-screen openings in an edge region of the solid rendition or linework mask region are imaged with a different size than micro-screen openings in a center region of the solid rendition or linework mask region.
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公开(公告)号：US20200376827A1
公开(公告)日：2020-12-03
申请号：US16996349
申请日：2020-08-18
发明人： Wolfgang Sievers
摘要： A system for preparing a photopolymer printing plate includes an imager, a plate unloader configured to automatically unload the plate from the imager and deliver the plate to an exposure unit comprising a plurality of UV LEDs, and a controller configured to operate the imager, the plate unloader, and the exposure unit. The imager has a rotatable drum configured to rotate while laser beams ablate portions of an ablatable layer of the printing plate in accordance with imaging data. The UV LEDs include a back array and a front array configured to expose the front of the UV-curable plate, at least one of which is configured to emit UV radiation toward the plate during relative motion between the plate and the array.
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公开(公告)号：US10831105B2
公开(公告)日：2020-11-10
申请号：US16629061
申请日：2018-07-20
发明人： Wolfgang Sievers
IPC分类号： G03F7/20
摘要： Apparatus and method for directly curing photopolymer printing plates, such as with UV radiation. Printing plates are cured directly by radiation, such as emitted from a high power UV laser beam. No LAMS layer or film bearing the image information is required on top of the polymer plate. The laser beam may be split into several individually-modulated beams by means of an Acousto Optical Deflector. Each individual beam is capable of curing pixels of the image that are to be transferred to the printing plate. Support shoulders for the printing details, formed by the pixels are determined by the caustic of the UV beam propagation.
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公开(公告)号：US10766247B2
公开(公告)日：2020-09-08
申请号：US15820333
申请日：2017-11-21
发明人： Wolfgang Sievers
摘要： An apparatus comprises: (a) a rotatable drum configured to have a UV-curable printing plate with an ablatable layer thereon, placed thereon; (b) at least one laser beam to image the plate on the drum by ablating some of the ablatable layer according to image data to form an imaged plate; (c) an unloading area onto which a plate is movable when unloaded; and (d) a plurality of UV LEDs configured to apply UV radiation to the back of the UV-curable plate or to both the front and back of the UV-curable plate during or after the unloading of the imaged plate.
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公开(公告)号：US20230136557A1
公开(公告)日：2023-05-04
申请号：US17766894
申请日：2020-10-07
发明人： Wolfgang Sievers , Pascal Thomas , Thomas Klein
摘要： Systems and processes for making a flexo plate, and plates made thereby. Non-printing indicia defined by areas of resence and absence of polymer in the plate floor are readable downstream of the washing or other non-cured-polymer-removal step but do not print in the printing step. The non-printing indicia may define a repeating pattern of alphanumeric characters, non-text graphics, or a combination thereof.
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公开(公告)号：US11584149B2
公开(公告)日：2023-02-21
申请号：US16433873
申请日：2019-06-06
发明人： Wolfgang Sievers , Pascal Thomas , Thomas Klein
摘要： Systems and processes for making a flexo plate, and plates made thereby. Non-printing indicia defined by areas of presence and absence of polymer in the plate floor created using microdots imaged during a LAMS layer imaging step are readable downstream of the washing or other non-cured-polymer-removal step but not to print in the printing step. The non-printing indicia may define a repeating pattern of alphanumeric characters, non-text graphics, or a combination thereof. A difference in growth of plate structures corresponding to different types of microdots may be used for characterizing processing conditions.
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公开(公告)号：US11314170B2
公开(公告)日：2022-04-26
申请号：US17066698
申请日：2020-10-09
发明人： Wolfgang Sievers
IPC分类号： G03F7/20
摘要： Apparatus and method for directly curing photopolymer printing plates, such as with UV radiation. Printing plates are cured directly by radiation, such as emitted from a high power UV laser beam. No LAMS layer or film bearing the image information is required on top of the polymer plate. The laser beam may be split into several individually-modulated beams by means of an Acousto Optical Deflector. Each individual beam is capable of curing pixels of the image that are to be transferred to the printing plate. Support shoulders for the printing details, formed by the pixels are determined by the caustic of the UV beam propagation.
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公开(公告)号：US20210026247A1
公开(公告)日：2021-01-28
申请号：US17066698
申请日：2020-10-09
发明人： Wolfgang Sievers
IPC分类号： G03F7/20
摘要： Apparatus and method for directly curing photopolymer printing plates, such as with UV radiation. Printing plates are cured directly by radiation, such as emitted from a high power UV laser beam. No LAMS layer or film bearing the image information is required on top of the polymer plate. The laser beam may be split into several individually-modulated beams by means of an Acousto Optical Deflector. Each individual beam is capable of curing pixels of the image that are to be transferred to the printing plate. Support shoulders for the printing details, formed by the pixels are determined by the caustic of the UV beam propagation.
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公开(公告)号：US20160214369A1
公开(公告)日：2016-07-28
申请号：US15088062
申请日：2016-03-31
发明人： Wolfgang Sievers
IPC分类号： B41C1/10
CPC分类号： B41C1/1033 , B41C1/1008 , G03F7/2057 , G03F7/24
摘要： An apparatus comprises: (a) a rotatable drum configured to have a UV-curable printing plate with an ablatable layer thereon, placed thereon; (b) at least one laser beam to image the plate on the drum by ablating some of the ablatable layer according to image data to form an imaged plate; (c) an unloading area onto which a plate is movable when unloaded; and (d) a plurality of UV LEDs configured to apply UV radiation to the back of the UV-curable plate or to both the front and back of the UV-curable plate during or after the unloading of the imaged plate.
摘要翻译： 一种装置包括：（a）可旋转的滚筒，其被配置成在其上放置有其上具有可烧蚀层的UV固化印刷板; （b）至少一个激光束，以通过根据图像数据烧蚀一些可烧蚀层来成像所述滚筒上的板以形成成像板; （c）卸载区域，卸载时板可以移动; 以及（d）多个UV LED，其被配置为在所述成像板的卸载期间或之后将紫外线辐射施加到所述UV可固化板的背面或者UV可固化板的前后。
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公开(公告)号：US09315009B2
公开(公告)日：2016-04-19
申请号：US13770974
申请日：2013-02-19
发明人： Wolfgang Sievers
CPC分类号： B41C1/1033 , B41C1/1008 , G03F7/2057 , G03F7/24
摘要： An apparatus comprises: (a) a rotatable drum configured to have a UV-curable printing plate with an ablatable layer thereon, placed thereon; (b) at least one laser beam to image the plate on the drum by ablating some of the ablatable layer according to image data to form an imaged plate; (c) an unloading area onto which a plate is movable when unloaded; and (d) a plurality of UV LEDs configured to cure UV-curable material on at least an imaged portion of the plate during the imaging process, such that imaging of one part of the plate and curing of an imaged portion of the plate occur simultaneously. In another embodiment, the plurality of LEDs are to apply UV radiation to the back of the UV-curable plate or to both the front and back of the UV-curable plate during or after the unloading of the imaged plate.
摘要翻译： 一种装置包括：（a）可旋转的滚筒，其被配置成在其上放置有其上具有可烧蚀层的UV固化印刷板; （b）至少一个激光束，以通过根据图像数据烧蚀一些可烧蚀层来成像所述滚筒上的板以形成成像板; （c）卸载区域，卸载时板可以移动; 和（d）多个UV LED，其被配置为在成像过程期间在至少成像部分上固化可UV固化材料，使得板的一部分成像和板的成像部分的固化同时发生 。 在另一个实施例中，多个LED将在UV成像板的卸载期间或之后施加UV辐射到UV可固化板的背面或UV可固化板的前后。
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