公开(公告)号：US3507215A

公开(公告)日：1970-04-21

申请号：US3507215D

申请日：1967-08-31

申请人： ROLAND OFFSETMASCHF

发明人： SCHUHMANN SIEGFRIED

IPC分类号： B41F7/24 ,  B41F7/26 ,  B41F33/00 ,  B41F31/12 ,  B41F33/10

CPC分类号： B41F7/24 ,  B41F7/26 ,  B41F33/0054

公开(公告)号：US2873667A

公开(公告)日：1959-02-17

申请号：US71043058

申请日：1958-01-22

申请人： MANDEL

发明人： ELLIOT MANDEL ,  WILLIAM GOLDSBOROUGH

IPC分类号： B41F7/24

CPC分类号： B41F7/24

公开(公告)号：US11835446B2

公开(公告)日：2023-12-05

申请号：US17355692

申请日：2021-06-23

申请人： Xerox Corporation

发明人： Donald Thresh ,  Jonathan Ireland ,  Bruce H. Smith ,  Michael N. Soures ,  James D. Vanbortel

IPC分类号： G01N21/21 ,  B41F7/24 ,  B41N3/08

CPC分类号： G01N21/211 ,  B41F7/24 ,  B41N3/08 ,  B41P2233/30

摘要： An optical light reflectance measurement system above an imaging member surface measures fountain solution surface light reflectance interference on reflective substrate portions of the imaging member surface in real-time during a printing operation. The measured light reflectance interference corresponds to a thickness of the fountain solution layer and may be used in a feedback loop to actively control fountain solution layer thickness by adjusting the volumetric feed rate of fountain solution added onto the imaging member surface during a printing operation to reach a desired uniform thickness for the printing. This fountain solution monitoring system may be fully automated.

公开(公告)号：US11370216B1

公开(公告)日：2022-06-28

申请号：US17161879

申请日：2021-01-29

申请人： Xerox Corporation

发明人： Douglas K. Herrmann ,  Chu-Heng Liu ,  Seemit Praharaj ,  Jason M. Lefevre ,  Paul J. McConville

IPC分类号： B41F7/24 ,  G01B11/02 ,  B41F31/02

摘要： An apparatus and method for measuring the thickness of fountain solution (FS) in a Digital Architecture for Lithographic Ink (DALI) printing system by transferring the FS to an optical roller with the properties of a lens and measuring the resulting effect on the refraction of an image captured through the lens. The optical roller may comprise a clear or glass cylinder forming a Fresnel lens cylinder having an engineered surface of known surface roughness and wherein the roller is placed adjacent the image member blanket. A heat source is used to evaporate the FS from the blanket for transfer to the optical roller where the FS wets the roller surface to different degrees based on the FS thickness relative to Fresnel ridge depth. Changes to the optical refraction through the lens varies with the FS thickness. An image sensor (e.g., a CCD camera or image analysis system) evaluates the image through the optical roller for FS thickness determination.

公开(公告)号：US20220161542A1

公开(公告)日：2022-05-26

申请号：US17561162

申请日：2021-12-23

申请人： FUJIFILM Corporation

发明人： Kazuaki ENOMOTO ,  Yohei ISHIJI ,  Shunsuke YANAGI

IPC分类号： B41F7/24 ,  B41C1/10 ,  B41N1/14 ,  G03F7/11 ,  G03F7/038 ,  G03F7/035 ,  G03F7/029 ,  C08G18/75 ,  C08G18/32 ,  C08G18/76 ,  C08G18/34

摘要： Provided is a lithographic printing plate precursor having an aluminum support and an image-recording layer formed on the aluminum support, in which the image-recording layer contains resin particles A that have an ethylenically unsaturated group and a compound B that has an ethylenically unsaturated group other than the resin particles A and has an ethylenically unsaturated bond valence of 1.5 mmol/g or more. Also provided are a method for preparing lithographic printing plate or a lithographic printing method using the lithographic printing plate precursor.

公开(公告)号：US11305572B2

公开(公告)日：2022-04-19

申请号：US16917044

申请日：2020-06-30

申请人： Xerox Corporation

发明人： David C. Craig ,  Mark J. Hirsch ,  Mark C. Petropoulos ,  Eliud Robles Flores

IPC分类号： B41N3/08 ,  B41F33/00 ,  B41F7/24

摘要： According to aspects of the embodiments, there is provided a method of determining the amount of fountain solution employed in a digital offset lithography printing system. Fountain solution thickness is determined by examining optical density of some halftone or solid patch versus laser current level. The apparatus and method uses a variable current signal to dither or perturb the laser imaging system to irradiate a fountain solution layer to create patches at different laser current levels. An aptly programmed controller then process optical density measurements to indirectly estimate fountain solution level.

公开(公告)号：US10195871B1

公开(公告)日：2019-02-05

申请号：US15872396

申请日：2018-01-16

申请人： Xerox Corporation ,  Palo Alto Research Center Incorporated

发明人： Steven R. Moore ,  Palghat S. Ramesh ,  Alex S. Brougham

IPC分类号： B41F7/24 ,  B41J2/325 ,  B41F19/00 ,  B41J2/345

摘要： A thermal printhead (TPH) is positioned to selectively preheat a blanket surface such as an arbitrarily reimageable surface of a variable lithography system. The blanket then immediately passes through a chamber containing dampening solution vapor. The vapor condenses only where the blanket has not been heated, thus developing an image ready for inking.

公开(公告)号：US09676176B2

公开(公告)日：2017-06-13

申请号：US13404185

申请日：2012-02-24

申请人： Peter Elter ,  Nikolaus Pfeiffer

发明人： Peter Elter ,  Nikolaus Pfeiffer

IPC分类号： B41F7/24 ,  B41F31/12 ,  B41F31/13

CPC分类号： B41F7/24 ,  B41F31/12 ,  B41F31/13

摘要： A method for controlling the inking in a printing press includes compensation of an ink requirement in an inking unit and/or compensation of a dampening solution requirement in a dampening unit of the printing press in the event of a change in the printing speed. The printing speed profile or machine state prevailing before the instant of the change in the printing speed is taken into consideration in the compensation of the metering of ink or dampening solution.

公开(公告)号：US09272506B2

公开(公告)日：2016-03-01

申请号：US14318654

申请日：2014-06-29

申请人： Palo Alto Research Center Incorporated

发明人： Timothy D Stowe ,  David K. Biegelsen ,  Gregory B Anderson ,  Jack T. Lestrange

IPC分类号： B41F35/04 ,  B41F7/24

CPC分类号： B41F35/04 ,  B41F7/24 ,  B41F31/027 ,  B41P2235/22

摘要： A system and method are provided for providing an improved inker unit surface cleaning and conditioning system, including in a single anilox chamber blade system, for improving image quality, including eliminating ghosting, in a proposed variable data digital lithographic image forming architecture. Techniques are provided to remove acquired oil from an inking member. A particularly-configured containment encloses a cleaner (disturber) roller to emulsify the acquired oil on the inking roller. The cleaner roller is preferably configured with a pliable surface including a silicon roller surface over a porous base. The silicon roller (1) absorbs dampening solution oil; and (2) agitates ink that may be still held in certain cells/cavities of the inking member or roller. In embodiments, a vacuum pressure is applied to the inside of the hollow cleaner roller to better remove the residual ink and dampening solution from the inking roller.

摘要翻译： 提供了一种系统和方法，用于在所提出的可变数据数字平版印刷图像形成架构中提供改进的墨水单元表面清洁和调节系统，其包括在单个网纹室室叶片系统中，以改善图像质量，包括消除重影。 提供技术来从上墨构件中去除所获得的油。 特别构造的容纳物包围清洁器（干燥器）辊，以将所获取的油乳化在着墨辊上。 清洁辊优选地配置有在多孔基底上包括硅辊表面的柔韧表面。 硅辊（1）吸收润版液; 和（2）搅拌可能仍然保持在着墨构件或辊的某些单元/空腔中的墨。 在实施例中，真空压力被施加到中空的清洁辊的内部，以更好地从上墨辊中去除残留的墨水和阻尼溶液。

公开(公告)号：US20160023452A1

公开(公告)日：2016-01-28

申请号：US14340055

申请日：2014-07-24

申请人： XEROX CORPORATION

发明人： Francisco ZIRILLI

IPC分类号： B41F7/24

CPC分类号： B41F7/32

摘要： An ink-based digital printing dampening fluid delivery system useful for printing with an ink-based digital printing system, the ink-based digital printing system having an imaging member, includes a supply chamber; and a supply channel, the supply channel being configured to deliver fluid onto a surface of the imaging member, wherein a width of the surface of the imaging member onto which dampening fluid is applied is twenty percent greater, or more, than a diameter of the supply chamber.

摘要翻译： 一种用于基于油墨的数字印刷系统打印的油墨数字印刷润版液输送系统，具有成像构件的基于油墨的数字印刷系统包括供给室; 和供应通道，所述供应通道被配置为将流体输送到所述成像构件的表面上，其中所述成像构件的施加有阻尼流体的表面的宽度比所述成像构件的直径大20％或更多 供应室。