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公开(公告)号：US3700984A
公开(公告)日：1972-10-24
申请号：US3700984D
申请日：1971-03-08
Applicant: NORTH AMERICAN ROCKWELL
Inventor： ROUSE WILLIAM H
CPC classification number: B41F33/0054 , B41F7/24
Abstract: A dampening system for a lithographic printing press which has a plurality of feed motors for controlling the rate at which dampening fluid is supplied to the printing plate in the press. The system includes a tachometer generator for producing an electrical signal representing the press speed, and means for converting the electrical signal to a mechanical displacement. The mechanical displacement is applied to a resistor matrix which produces a second electrical signal which represents a predetermined non-linear function of the press speed, with the particular nature of the function being determined by the setting of the resistor matrix. This second electrical signal is supplied to the speed control means associated with the feed motors so as to automatically vary the speed of the feed motors according to the predetermined non-linear function of the press speed.
Abstract translation: 一种用于平版印刷机的阻尼系统，其具有多个供给马达，用于控制在印刷机中向印刷版提供润版液的速度。 该系统包括用于产生表示冲压速度的电信号的转速计发生器，以及用于将电信号转换为机械位移的装置。 机械位移被施加到电阻矩阵，该电阻矩阵产生表示按压速度的预定非线性函数的第二电信号，其功能的特定性质由电阻矩阵的设定决定。 该第二电信号被提供给与进给电动机相关联的速度控制装置，以便根据预定的非线性功能的压力速度来自动改变进给电动机的速度。
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公开(公告)号：US3559569A
公开(公告)日：1971-02-02
申请号：US3559569D
申请日：1969-02-24
Applicant: ADAMOVSKE STROJIRNY NP
Inventor： JURNY JOSEF
CPC classification number: B41F7/40
Abstract: In a damping unit having two applicator rollers connected by a transfer roller and a distributor roller engaging only one of the applicator rollers, the bearings of the applicator rollers are guided between an inoperative and an operative position relative to the plate cylinder in converging slots of a guide bracket. The bearing of the applicator roller in direct contact with the distributor roller moves in a slot which is perpendicular to a plane through the axes of the distributor roller and of the directly engaged applicator roller when the latter is at the midpoint of its path between the operative and inoperative positions, thereby making the contact pressures between the two rollers precisely equal in the two positions.
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公开(公告)号：US3048098A
公开(公告)日：1962-08-07
申请号：US207760
申请日：1960-01-12
Applicant: MILLER PRINTING MACHINERY CO
Inventor： SIEBKE CARL O
CPC classification number: B41F13/10 , B41F7/24 , B41F7/26 , B41F27/1293
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公开(公告)号：US2604848A
公开(公告)日：1952-07-29
申请号：US1881548
申请日：1948-04-03
Applicant: DICK CO AB
Inventor： MULLEN WILLIAM G
IPC: B41F7/24
CPC classification number: B41F7/24
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公开(公告)号：US20230331018A1
公开(公告)日：2023-10-19
申请号：US18338821
申请日：2023-06-21
Applicant: FUJIFILM Corporation
Inventor： Atsushi MATSUURA , Yusuke KOZAWA , Keisuke ARIMURA
Abstract: An object of the present invention is to provide a lithographic printing plate precursor from which a lithographic printing plate with excellent oil-based cleaner printing durability is obtained, a method of producing a lithographic printing plate, a printing method, and a method of producing an aluminum support. The lithographic printing plate precursor of the present invention is a lithographic printing plate precursor including an aluminum support, and an image recording layer disposed on the aluminum support, in which the aluminum support includes an aluminum plate and an anodized aluminum film disposed on the aluminum plate, the image recording layer is disposed on the aluminum support on a side of the anodized film, and an area ratio of projections with a height of 0.80 μm or greater from an average level, which is obtained by measuring a surface of the aluminum support on a side of the image recording layer in an area of 400 μm×400 μm using a non-contact three-dimensional roughness meter, is 20% or less.
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Patent Agency Ranking
公开(公告)号：US11479034B2
公开(公告)日：2022-10-25
申请号：US17137516
申请日：2020-12-30
Applicant: Xerox Corporation
Inventor： Douglas K. Herrmann , Chu-heng Liu , Seemit Praharaj , Paul J. McConville , Jason M. LeFevre , Michael J. Levy
Abstract: According to aspects of the embodiments, there is provided a method of measuring the amount of fountain solution employed in a digital offset lithography printing system. Fountain solution thickness is measured using a glass roll at a lower temperature than the fountain solution. The lower temperature causes the fountain solution to undergo a change in state and in a solid state the fountain solution crystalizes and changes roll opacity with the thickness of the film. When radiated with a light source the opacity is continuously measured through the surface of the roller. The thickness of the crystallized fountain solution can then be determined via the opacity level increase by the crystallization and the impact to the opacity on the glass roll.
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47.发明申请公开(公告)号：US20200180299A1
公开(公告)日：2020-06-11
申请号：US16792900
申请日：2020-02-18
Applicant: FUJIFILM Corporation
Inventor： Kenjiro ARAKI , Shizuka ISHIKAWA , Taira MURAKAMI
Abstract: Provided is a lithographic printing plate precursor having: a support; and an image-recording layer as an outermost surface layer on the support, in which the image-recording layer includes a hydrophilic polymer, an ion intensity derived from the hydrophilic polymer has a maximum value I1, the ion intensity being measured by a time-of-flight secondary ion mass spectrometry in such a manner that cutting is carried out from an image-recording layer surface in a direction of the support by an Ar gas cluster ion beam method, a ratio d0/d1 of a thickness d0 of the image-recording layer to a depth d1 from an outermost layer at which the I1 is obtained is 2.0 or more, and a ratio I1/I0 of the I1 to an ion intensity I0 derived from the hydrophilic polymer at a depth from the outermost layer of the d0 is 1.5 or more.
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公开(公告)号：US10336057B2
公开(公告)日：2019-07-02
申请号：US15014217
申请日：2016-02-03
Applicant: XEROX CORPORATION
Inventor： Steven R. Moore , Peter J. Knausdorf , Chu-heng Liu
Abstract: An apparatus and method for printing directly onto print media including smooth non-absorbent media substrates (e.g., polymer films) inks having a wide range in viscosity, so that flexographic, gravure, and lithographic inks can all be contemplated. The proposed method is able to print with variable data/imaging. Dampening fluid may be patterned onto an imaging roll by coating the imaging roll with a layer of the dampening fluid and selectively evaporating off a patterned portion via a laser imaging device. The imaging roll then contacts the print substrate and transfers the patterned dampening fluid onto the substrate via film splitting. The substrate then passes through an inker station where ink is deposited directly to the substrate for attachment thereto except where rejected by the dampening fluid.
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公开(公告)号：US10328688B2
公开(公告)日：2019-06-25
申请号：US15496709
申请日：2017-04-25
Applicant: Xerox Corporation , Palo Alto Research Center Incorporated
Inventor： Naveen Chopra , Peter Gordon Odell , Steven E. Ready , Eric Peeters , Timothy D. Stowe , Ashish Pattekar , David K. Biegelsen
Abstract: A dampening fluid useful in offset ink printing applications contains water and a surfactant whose structure can be altered. The alteration in structure aids in reducing accumulation of the surfactant on the surface of an imaging member. The surfactant can be decomposed, switched between cis-trans states, or polymerizable with ink that is subsequently placed on the surface.
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公开(公告)号：US20180250929A1
公开(公告)日：2018-09-06
申请号：US15448365
申请日：2017-03-02
Applicant: XEROX CORPORATION
Inventor： Anthony S. CONDELLO , Peter J. KNAUSDORF , Jack T. LESTRANGE
CPC classification number: B41F35/002 , B41F7/00 , B41F7/02 , B41F7/24 , B41F7/26 , B41F35/02 , B41M1/00 , B41M1/06 , B41M5/0256 , B41M5/03 , B41M7/0081 , B41N3/006 , B41P2227/70 , B41P2235/22
Abstract: A viscosity control unit provides improved and efficient residual ink removal from an imaging member following the transfer of the majority of the ink from the imaging member to a substrate, and prior to the application of a subsequent ink application to the imaging member. The viscosity control unit hardens the residual ink on the imaging member to produce a hardened residual ink. By increasing the viscosity of the residual ink before it is removed by a cleaning station, the removal of the residual ink from the imaging member becomes easier and more efficient.
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