公开(公告)号：WO1990002044A2

公开(公告)日：1990-03-08

申请号：PCT/US1989003558

申请日：1989-08-18

Applicant: PRESSTEK, INC.

Inventor： PRESSTEK, INC. ,  LEWIS, Thomas, E. ,  DAVIDSON, Bradley, W. ,  WILLIAMS, Richard, A. ,  NOWAK, Michael, T. ,  KLINE, John, F.

IPC: B41C01/10

CPC classification number: B41C1/04 ,  B41C1/1033 ,  B41C1/1066 ,  B41C2210/16 ,  B41F7/02 ,  B41P2227/70 ,  B41P2235/23 ,  Y10S428/908 ,  Y10T428/24521

Abstract: Various lithographic plates suitable for wet or dry lithography are described which are adapted for imaging by spark discharges to the plates. A method and apparatus for imaging those plates are also described.

Abstract translation: 描述了适用于湿法或干法光刻法的各种平版印刷版，适用于通过火花放电对印版进行成像。 还描述了用于对这些板进行成像的方法和装置。

公开(公告)号：WO1992009659A1

公开(公告)日：1992-06-11

申请号：PCT/US1991006551

申请日：1991-09-11

Applicant: PRESSTEK, INC.

Inventor： PRESSTEK, INC. ,  LEWIS, Thomas, E. ,  NOWAK, Michael, T.

IPC: C08L83/04

CPC classification number: G03F7/0757 ,  C08G77/12 ,  C08G77/14 ,  C08G77/16 ,  C08G77/20 ,  C08G77/24 ,  C08G77/70 ,  C08L83/04 ,  C09D183/04 ,  C08L83/00

Abstract: Two-component silicone formulations consisting of a high-molecular-weight silicone component and a low-molecular-weight silicone polymer. The components are combined in varying proportions with a cross-linking agent to produce compositions of varying viscosities and dispersibilities. The high-molecular-weight component is linear polysiloxane compound with a molecular weight of at least 300,000, and preferably 500,000 or higher. The low-molecular-weight component has a similar structure, with a molecular weight no greater than 70,000. Various substitutions are made to facilitate cross-linking among components. The formulations are well-suited to coating applications, and can advantageously be used as coatings for planographic plates.

公开(公告)号：WO1991008108A1

公开(公告)日：1991-06-13

申请号：PCT/US1990006883

申请日：1990-11-26

Applicant: PRESSTEK, INC.

Inventor： PRESSTEK, INC. ,  LEWIS, Thomas, E. ,  NOWAK, Michael, T.

IPC: B41C01/10

CPC classification number: B41C1/1033 ,  B41P2227/70 ,  B41P2235/23

Abstract: A lithographic printing plate that is transformable by spark-discharge techniques so as to change its affinity for ink. The plate features a layered structure including an ink-receptive substrate, a conductive layer and an ink-repellent coating. The ink-repellent coating contains a dispersion of crystalline metal oxide particles that promote straight-line travel of the spark to the surface of the plate, thereby promoting accurate imaging.

Abstract translation: 平版印刷版，可通过火花放电技术转化，以改变其对油墨的亲和力。 该板具有层状结构，其包括油墨接收基板，导电层和拒墨涂层。 防墨涂层含有结晶金属氧化物颗粒的分散体，其促进火花直线移动到板的表面，从而促进精确的成像。

公开(公告)号：WO1992014618A1

公开(公告)日：1992-09-03

申请号：PCT/US1991007186

申请日：1991-09-30

Applicant: PRESSTEK, INC.

Inventor： PRESSTEK, INC. ,  LEWIS, Thomas, E. ,  NOWAK, Michael, T.

IPC: B41N03/08

CPC classification number: B41C1/1033 ,  B41C2210/16 ,  B41N3/08 ,  B41P2227/70 ,  B41P2235/23

Abstract: A method of extending the useful life and/or enhancing the performance of wet or dry lithographic printing plates. A strong curable composition that adheres to the ink-receptive plate areas is first applied to an imaged plate. After removal of the composition from non-image plate areas, it is cured, thereby augmenting the resilience of the ink-receptive plate areas. If imaging of the plate results in surface recesses, the cured composition can enhance plate performance by making the entire surface coplanar.

Abstract translation: 延长使用寿命和/或提高湿或干平版印刷版的性能的方法。 首先将附着在油墨接收板区域上的强固化组合物施加到成像板上。 在从非图像印版区域去除组合物之后，其被固化，从而增强了油墨接收板区域的弹性。 如果板的成像导致表面凹陷，则固化的组合物可以通过使整个表面共面而增强板的性能。

公开(公告)号：WO1991011754A1

公开(公告)日：1991-08-08

申请号：PCT/US1991000668

申请日：1991-01-29

Applicant: PRESSTEK, INC.

Inventor： PRESSTEK, INC. ,  NOWAK, Michael, T. ,  LEWIS, Thomas, E.

IPC: G03F01/00

CPC classification number: G03F1/68 ,  H05K3/0002

Abstract: A novel photomask structure and method of producing photomasks using a non-contacting spark-discharge recording apparatus. The recording constructions of the present invention comprise a conductive layer, a layer transparent to the radiation that will be used to expose the target photosensitive material and, optionally, a coating layer deposited over the metal layer.

Abstract translation: 一种新型光掩模结构和使用非接触式火花放电记录装置制造光掩模的方法。 本发明的记录结构包括导电层，对于将用于暴露目标感光材料的辐射透明的层，以及任选地沉积在金属层上的涂层。

公开(公告)号：WO1991004154A1

公开(公告)日：1991-04-04

申请号：PCT/US1990005392

申请日：1990-09-21

Applicant: PRESSTEK, INC.

Inventor： PRESSTEK, INC. ,  LEWIS, Thomas, E. ,  NOWAK, Michael, T.

IPC: B41C01/10

CPC classification number: B41C1/1033

Abstract: A method of and means for controlling unwanted degradation of overlapping image points in a spark-imaged lithographic plate is set forth. A suitable conductive sheet having an appropriately selected volume resistivity is placed beneath the conductive metal sheet of the plate, thereby drawing off excess spark energy during the imaging process.

Abstract translation: 阐述了一种用于控制火花成像光刻板中重叠图像点的不希望的退化的方法和装置。 具有适当选择的体积电阻率的合适的导电片被放置在板的导电金属片之下，从而在成像过程中消除多余的火花能。

公开(公告)号：WO1993009957A1

公开(公告)日：1993-05-27

申请号：PCT/US1992005953

申请日：1992-07-16

Applicant: PRESSTEK, INC.

Inventor： PRESSTEK, INC. ,  LEWIS, Thomas, E. ,  NOWAK, Michael, T.

IPC: B41N01/08

CPC classification number: B41N1/003 ,  B41C1/1033 ,  B41N3/03 ,  B41P2227/70 ,  B41P2235/23

Abstract: A lithographic printing plate that is transformable by spark-discharge techniques so as to change its affinity for ink. The plate features a metal substrate and includes a conductive layer and an ink-adhesive coating. The plate can also include a heat-resistant insulating layer, or can be laminated using an adhesive that serves this function.

Abstract translation: 平版印刷版，可通过火花放电技术转化，以改变其对油墨的亲和力。 该板具有金属基底并且包括导电层和油墨粘合剂涂层。 该板还可以包括耐热绝缘层，或者可以使用用于该功能的粘合剂层压。

公开(公告)号：WO1992012011A1

公开(公告)日：1992-07-23

申请号：PCT/US1992000314

申请日：1992-01-07

Applicant: PRESSTEK, INC.

Inventor： PRESSTEK, INC. ,  PENSAVECCHIA, Frank, G. ,  GARDINER, John, P. ,  KLINE, John, F. ,  LEWIS, Thomas, E. ,  NOWAK, Michael, T.

IPC: B41C01/05

CPC classification number: B41C1/04 ,  B41C1/1033 ,  B41C1/1066 ,  B41F7/02 ,  B41P2227/70 ,  B41P2235/23 ,  Y10S101/47

Abstract: Printing apparatus has at least one print station including a blanket cylinder in rolling contact with an impression cylinder, a print cylinder for supporting a lithographic plate, the plate cylinder being in rolling contact with the blanket cylinder, at least one discharge source for applying an image to a plate supported by the plate cylinder, and a motor for moving the energy source relative to the plate cylinder so that when the plate cylinder is rotated, the discharge source scans a raster on the surface of the plate supported by the plate cylinder. The apparatus may be configured as an in-line or central-impression type press. A controller responsive to picture signals representing an original document repeatedly actuates each discharge source momentarily during the scan thereof so that the discharge source forms on the plate surface an image comprised of dots corresponding to the original document. The controller includes a dot-position look-up table for storing the x and y coordinates of substantially all dot positions on the plate and is arranged to actuate each energy source to form image dots at selected ones of the dot positions when said picture signals are present. The apparatus also includes provision for regulating the ink applied to the plate at each print station.

Abstract translation: 打印装置具有至少一个打印站，该打印站包括与压印滚筒滚动接触的橡皮布滚筒，用于支撑平版印版的打印滚筒，印版滚筒与橡皮滚筒滚动接触，至少一个用于施加图像的排出源 到由印版滚筒支撑的板，以及用于相对于印版滚筒移动能量源的马达，使得当印版滚筒旋转时，放电源扫描由印版滚筒支撑的印版的表面上的光栅。 该装置可以被配置为直列式或中央印模型压机。 响应于表示原稿的图像信号的控制器在其扫描期间重复地启动每个放电源，使得放电源在板表面上形成由与原始文档相对应的点组成的图像。 控制器包括一个点位置查找表，用于存储板上基本上所有点位置的x和y坐标，并且被布置成当所述图像信号是所述点位置时，使得每个能量源在选定的点位置形成图像点 当下。 该装置还包括用于调节在每个印刷站处施加到印版的油墨的装置。