МАГНИТНАЯ ФОРМА ДЛЯ ПЕЧАТАНИЯ ОПТИЧЕСКИХ ЭФФЕКТОВ

Изобретение относится к области полиграфии. Магнитная печатная форма содержит лист или блок из намагничиваемого композиционного материала, имеющий множество областей, расположенных по его поверхности. При этом первая область на указанной поверхности намагничена путем воздействия магнитным полем с помощью намагничивающей матрицы определенной формы, имеющей наружную поверхность в виде изображения, логотипа или обозначения. Причем первая область намагничена таким образом, что она имеет форму, соответствующую указанному изображению, логотипу или обозначению, и создает первое магнитное поле с заданным направлением, а вторая область на поверхности листа или блока, окружающая указанную первую область, либо не намагничена, либо намагничена по-другому по сравнению с первой областью, благодаря чему обеспечивается контраст между создаваемыми или магнитными полями. Заявленная группа изобретений позволяет упростить изготовление магнита и повысить степень гибкости в отношении магнитного поля, создаваемого ...

ФОРМА ПЕЧАТАЮЩЕГО ЭЛЕМЕНТА ДЛЯ ОФСЕТНОЙ ПЕЧАТИ

Изобретение относится к форме печатающего элемента множества отделенных друг от друга по периметру перемычками печатающих элементов печатной секции для офсетной печати, в частности ротационной офсетной печати, причем соответствующий печатающий элемент имеет геометрическую многоугольную форму. Печатающий элемент для имитации плотностей тонов на материале для запечатывания содержит множество распределенных по поверхности печатной точки печатающих элементов, причем каждый печатающий элемент ограничен только S-образными линиями и линии заключают во всех вершинах печатающего элемента угол ≤ 90°. Таким образом достигается новая форма печатающих элементов, с помощью которой возможными были бы еще более резкие репродукции и еще более тонкий и мягкий характер оттенков. 13 з. п. ф-лы, 5 ил.

ПЕЧАТНАЯ ФОРМА И СПОСОБ ИЗМЕНЕНИЯ ЕЕ СВОЙСТВ СМАЧИВАЕМОСТИ

Печатная форма может быть использована в процессе офсетной печати и представляет собой печатную пластину или печатный цилиндр с полупроводниковой поверхностью, которая несет узор, состоящий из гидрофильных и гидрофобных зон. Гидрофильные зоны имеют химические концевые группы в первом химическом состоянии, а гидрофобные зоны -химические концевые группы во втором химическом состоянии. При этом первое химическое состояние отличается от второго химического состояния. Для изменения свойств смачиваемости печатной формы поверхность полупроводника приводят в первое химическое состояние с первым свойством смачиваемости, после чего переводят частичное количество всех зон полупроводниковой поверхности во второе химическое состояние со вторым свойством смачиваемости путем изменения химических концевых групп полупроводниковой поверхности. Причем второе свойство смачиваемости отличается от первого свойства смачиваемости. Предложенный способ может быть применен как внутри, так и вне печатной машины, что ...

ПЕЧАТНАЯ ФОРМА (ВАРИАНТЫ) И СПОСОБ ПЕЧАТИ

Изобретение относится к печатной форме для печати, в частности ценных бумаг и документов, и способу печати. Печатная форма содержит, по меньшей мере, два функциональных слоя 1 и 2, из которых первый выполнен со сквозными печатными элементами 3 и 4 для переноса красочного изображения непосредственно на запечатываемый материал 5. Печатная форма имеет средство 8 для разрыва красочного слоя и перераспределения краски в печатных элементах между слоями, которое может быть выполнено в виде ребристой структуры или ее участков между слоями. Средство 8 может быть выполнено в виде сетки или ячеистой структуры между слоями 1 и 2. Способ печати согласно изобретению заключается в переносе формного изображения на запечатываемый материал посредством описанной печатной формы, причем в процессе печати в зоне печати создают давление, превышающее по величине предел текучести запечатываемого материала. Печатная форма и способ печати обеспечивают получение более сложных по структуре оттисков с повышенной степенью ...

УСТРОЙСТВО ДЛЯ БЕСКРАСОЧНОГО КОНГРЕВНОГО ТИСНЕНИЯ

Изобретение относится к производству полиграфической продукции и касается устройства для бескрасочного конгревного тиснения. Содержит штамп с рельефной рабочей поверхностью и контрштамп с плоской рабочей поверхностью, выполненный из пористого полиуретана, размещенный на основании из сплошного полиуретана и покрытый сверху и снизу слоями с низким коэффициентом трения. Изобретение позволяет повысить износостойкость устройства и его эффективность. 1 ил.

СПОСОБ ИЗГОТОВЛЕНИЯ ПРЕДВАРИТЕЛЬНО ОЧУВСТВЛЕННОГО МАТЕРИАЛА ДЛЯ ОФСЕТНЫХ ПЕЧАТНЫХ ФОРМ

Изобретение относится к способу изготовления предварительно очувствленного материала для офсетных печатных форм. Позволяет повысить качество изготавливаемого материала путем повышения влагоемкости и адгезионной прочности сцепления светочувстительного слоя с подложкой и ускорения технологического процесса изготовления. Электрохимическую обработку алюминиевой подложки осуществляют в 20 - 23%-ном растворе серной кислоты при одновременном изложении постоянного тока на переменный. Плотность постоянного тока 1-5 A/см2 . Плотность переменного тока составляет 11-17 A/дм2 . Обработку осуществляют в течение 1,5 - 3 с. Затем на подложку наносят светочувствительный слой и его сушат. Температура сушки составляет 120 - 150°С. Время сушки 35 - 60 с. 1 табл.

СПОСОБ ИЗГОТОВЛЕНИЯ ПЕЧАТНОЙ ФОРМЫ

Изобретение относится к способу изготовления печатной формы (клише) для горячего тиснения. Способ изготовления печатной формы включает фотовывод позитивного изображения на магниевую пластину путем экспонирования в ультрафиолетовом свете фоточувствительного слоя, нанесенного на поверхность пластины, последующее травление в азотной кислоте, удаление фоточувствительного слоя, промывку проточной водой и сушку. Вначале разрабатывают изображение в черно-белом виде с толщиной черных линий рисунка, соответствующих при позитивном фотовыводе выступающим линиям на оттиске, не менее 0,08 мм и расстоянием между линиями не менее 0,15 мм, а по краю изображения печатной формы формируют дополнительный контур с толщиной линии не менее 0,5 мм и отступом от края не более 0,7 мм. Пластину используют толщиной 2-7 мм, травление ведут в 5% азотной кислоте при комнатной температуре, сушку осуществляют феном при 60°С, остатки фоточувствительного слоя удаляют порошком мела. Дополнительно химически полируют 3% азотной ...

ФОРМА ПЕЧАТАЮЩЕГО ЭЛЕМЕНТА ДЛЯ ОФСЕТНОЙ ПЕЧАТИ

... 1. Печатающий элемент для имитации плотностей тона на материале для запечатывания, содержащий множество распределенных по поверхности растра печатающих элементов, отличающийся тем, что каждый из печатающих элементов (A-G; A1-A14; М-Р) имеет геометрически четко определенную форму и ограничен только прямыми линиями, а именно, более чем шестью сторонами. 2. Элемент по п.1, отличающийся тем, что печатающий элемент (A-G; A1-A14; М-Р) ограничен 9-11 сторонами. 3. Элемент по п.1 или 2, отличающийся тем, что печатающий элемент (A-G; A1-A14; М-Р) ограничен сторонами неравной длины. 4. Элемент по одному из предыдущих пунктов, отличающийся тем, что он представляет собой многоугольник (A-G; A1-A14; М-Р) со сторонами произвольно разной длины, которые взаимостыкуются под углами произвольно разной величины. 5. Элемент по п.4, отличающийся тем, что углы между сторонами в вершинах (Ер) многоугольника лежат в пределах от 5 до 175°, во всяком случае не более 180°. 6. Элемент по п.4 или 5, отличающийся тем ...

Материал для печатания по пластмассам

Способ изготовления пористой печатной формы

Способ печати

Способ изготовления светочувствительного раствора

Способ изготовления офсетных печатных форм

Металлическая переводная фольга

Способ изготовления электрофотографических офсетных форм

СПОСОБ ИЗГОТОВЛЕИИ ЭЛЕКТРОФОТОГРАФИЧЕСКИХ ОФСЕТНЫХ ФОРМ, включакнций зарядку цинкооксцдного материала, экспонировдние и проявление, о т л и ч а и щ и йс я тем, что, с целью повышения качестна фсфм путем устранения краевого эффекта изображения, в качестве проявителя используют водный раствор гидрофилизатора.

Фотоотверждаемая композиция для флексографских фотополимерных печатных форм

Способ изготовления светочувствительного раствора

Переводная фольга

ПЕРЕЮДНАЯ ФОЛЬГА, состоящая из подложки и последовательно нанесенных на нее лакового слоя, содержащего воски, металлического слоя и адгезионного слоя, содержащего связующее, азросил и краситель, о тличающаяся тем, что, с целью улучшения печатио-технических свойств фольги при одновременном повьшении производительности процесса получения п ереводн мй фольги и расширения ассортимента запечатьгааемых материалов, лаковый слс переводной фольги в качестве восков содержит высокоплавкий, ра4атированный и этерифицированный буроугодыше воски при следующем соотнснпенни компонентов , масЛ: Воск буроугольный высокоплавкий 25-35 Воск буроугольный рафинированный 25-35 Воск буроугольный этерифицированный 30-50 а адгезионный слой в качестве связу .ющего содержит акрнлов и канифольно-малеиновую смолу при следующем соотношении компонентов, мас.Х: Смола акриловая 30-35 Смола канифольно- . малеиновая25-30. Аэросил30-35 , э i Краситель 1-5 Э) ...

Способ изготовления печатных форм для печатания эстампов методом глубокой гравюры

Способ изготовления офсетных форм

Пластина для дриографической печатной формы

Struktur zur Musterbildung, Verfahren zur Musterbildung, und deren Anwendung

Lichtempfindliche Trockenflachdruckplatte

Träger für Flachdruckplatte und vorsensibilisierte Druckplatte

UEbertragungsverfahren

Ferroelektrisches Bilderzeugungsglied und Verfahren zu dessen Verwendung

TIEFDRUCKVERFAHREN UND DRUCKFORM ZU SEINER DURCHFUEHRUNG

Lithographische Zwei-Farben-Druckmatrize,Fertigung und Anwendung

TROCKENFLACHDRUCKPLATTE FÜR DIREKTBILDERZEUGUNG

Tampondruckklischee und Verfahren zum Herstellen eines Tampondruckklischees

Die Erfindung betrifft ein Tampondruckklischee mit einem Grundkörper und einer auf dem Grundkörper fest aufgebrachten, die Gravur aufweisenden Auflage. Die Erfindung betrifft außerdem ein Verfahren zum Herstellen eines Tampondruckklischees mit einem Grundkörper und einer auf dem Grundkörper fest aufgebrachten, die Gravur aufweisenden Auflage, indem die Auflage aufgespritzt wird.

PROCESS FOR PREPARING A PRINTING MASTER

... 1471083 Coated products XEROX CORP 9 May 1975 [27 June 1974] 19575/75 Heading B2E [Also in Divisions B6 and C3] A printing plate blank comprises a substrate which carries a coating of a silicone gum containing two curing agents, each activatable under different conditions, one of the curing agents having been activated to partially cure the gum to a non-tacky condition. Activation of the other curing agent completes the cure. The curing agents may be activated at different temperatures, or one by light and one by heat. The substrate may be paper, aluminium, polycarbonate or nylon. In Example I a polydimethylsiloxane gum is mixed with an acetone oxine blocked toluene-2, 4- diisocyanate as lower temperature active curing agent, and a bis-phenol adduct of methylene bis(4-phenyl isocyanate) as higher temperature active curing agent. This composition was dissolved in a mixture of benzene and tetrahydrofuran, and drawbar coated onto aluminium. The low temperature curing agent was then activated ...

Improved Artificial Stone Printing Rolls

... 22,743. Jaek, C. Nov. 2, 1907, [date applied for under Section 91 of Patents &c. Act, 1907]. Stone, artificial; stone, preserving.-In a machine for printing on wallpaper, wax cloth, and linoleum the printing-rollers are formed of artificial stone. The rollers are formed of layers of varying hardness, so that the raw product can be easily turned in a lathe, and the finished product can be easily engraved and hardened ; the core proper is of a harder material. The roll consists of three layers a, b, c, of which the core c is formed of lime-sandstone, and the layer b is made softer by the admixture of sawdust. The outer layer a contains more sawdust, and is easily removed in a lathe. The layer b, when turned true, is engraved, and is then hardened by being coated with cement to which is applied powdered porcelain or metal powder, and the roll is then heated in a stove. When a new pattern is to be applied, the outer layer is removed by heat, and the roll b is turned in a lathe.

Ferroelectric members and printing plates therefrom

An imagewise polarizable imaging member can be used as a printing plate to print the same or different images with an electrically responsive marking media. The imaging member includes a matrix-addressable microelectronic layer in proximate relationship with an imagewise polarizable ferroelectric layer. Imaging is accomplished by forming an imagewise electrical pattern in the ferroelectric layer using signals from the matrix-addressable microelectronic layer, and applying the electrically responsive marking media to the electrically polarized ferroelectric layer, creating thereon an identifiable image pattern. The marking media (dry or liquid toner) can then be transferred to a suitable receiver material to form the desired printed image. The pattern may be changed locally or entirely by repolarizing the ferroelectric layer using different signals from the microelectronic layer.

Device for producing printing formes

The invention relates to a device for producing printing formes on a carrier cylinder. A device is to be provided in which a printing forme, in particular a sleeve-type printing forme, can be imaged with little outlay and demand for space. To this end, a blank printing forme 16 is arranged on a carrier cylinder 1 which is received in cantilever fashion in a frame 2 in a mounting 3 and is driven by a motor. The printing forme 16 is slipped onto the carrier cylinder 1 on the side of the carrier cylinder 1 that is remote from the mounting 3 and an imaging arrangement 15 is moved along the carrier cylinder 1. The cantilever mount includes a tube inserted inside the cylinder 1.

Printing plate and method for fabricating the same

A process for recycling exposed and unexposed material from flexographic printing plate recording layers

METHOD OF MAKING PRINTING PLATES

... 1387542 Imaging printing plates xerographically FUJI PHOTO FILM CO Ltd 12 June 1973 [15 June 1972 16 June 1972] 28006/73 Heading G2H [Also in Division B6] A printing plate blank, with a surface layer comprising a silicone rubber and a resin/and or an inorganic solid, is imaged by transfer of a toner image from an electro-photographic photosensitive surface and heat fixing of the toner image. Preferably transfer is carried out by application of a charge to the back of the blank, or by a hot pressure roller which forces the blank against the photo-sensitive surface. After transfer, the image may be fixed by an infra-red lamp or an electric heater.

Printing machine with print image formation system

Methods of inspercting flexographic and the like printing plates

PLANOGRAPHIC PRINTING PLATE

1409781 Electro-photographic materials ADDRESSOGRAPH MULTIGRAPH CORP 13 July 1972 [14 July 1971] 32904/72 Heading G2C An electro-photographic member for producing printing plates comprises a flexible support, a photo-conductive layer and an oleophobic, inkrepellant polysiloxane layer, the ratio of organic groups to silicon atoms being between 1.95 and 2.1:1. Alternatively, the polysiloxane and photoconductor may be in the same layer. Specified photo-conductors ZnO and the oxides and sulphoxides of Cd, Hg, Sb, Bi, Tl, Mb, Al, Pb or Zn, anthracene, benzidine, anthroquinone, acenaphthene, fluoranthene and naphthalene. The preferred photo-conductor, ZnO, may be dispersed in a binder of a vinyl polymer or an acrylic or urea- or xylene/formaldehyde resin. Reference has been directed by the Comptroller to Specifications 1217723 and 903964.

Method and apparatus for adding patterns to a golf ball

PROCESS FOR PREPARING PRINTING FORMS AND FORMS PRODUCED THEREBY

Method of producing planographic printing forms by irradiating a recording material having a base made of anodised aluminium having at least 3 g of oxide per m<2> and of a recording layer containing a light-curable diazo compound and an amine resin, with laser radiation and washing out the unirradiated layer regions.

IMPROVEMENTS IN OR RELATING TO THE PRODUCTION OF MULTI-LAYERED PRODUCT UNITS

... 1281079 Laminates; laminating-apparatus COLONIAL CARBON CO 8 Sept 1969 [11 Aug 1969] 44253/69 Heading B5N In the manufacture of multi-layer duplicating sheets, paper stock 10 is tensioned by rollers 22 to remove residual distortion, preheated by a roller 24 and coated by a gravure roll 28 having doctor blades 34, 35. A movable cylinder 27 is provided for intermittent coating. The coated sheet 106 is passed over a heated finishing bar 38, e.g. for smoothing or roughening, and a setting unit comprising a tempering roller 40, a conditioning arch 42 and chilling rollers 44, 45. The coating, finishing and setting are carried out under controlled environmental conditions of temperature and humidity. If a second coating is required, the sheet passes a second gravure cylinder 50, e.g. for applying wax, and a finishing bar 58. After coating, the sheet passes over a roller 59 which, with the chilling roller 45, may be provided with a variable speed drive to compensate for expansion and contraction ...

PROCESSING OF RADIATION-SENSITIVE MEMBERS

... 1513368 Photographic after-treatment VICKERS Ltd 1 July 1975 [8 July 1974] 30264/74 Heading G2X [Also in Division B6] A member carrying a photographically produced image is heat-treated whilst the non-imaged areas are protected from contamination by applying a water-soluble coating which is removed after heattreatment. The coating may be of a salt e.g. sodium dodecyl phenoxybenzene disulphonate, a sodium salt of an alkylated naphthalene sulphonic acid, a disodium salt of methylene dinaphthalene sulphonic acid, a sodium dodecyl benzene sulphonate, a sodium salt of sulphonated alkyldiphenyl oxide or lithium nitrate. The member may be for use as a printing plate, or may be a substrate carrying a resist image for etching. The image may be prepared from a sensitive layer comprising quinone diazide and a resin e.g. a novolak resin. A protective lacquer, e.g. of novolak resin or of a mixture of a resol resin and an epoxy resin, may be applied to the image prior to application of the watersoluble ...

Method and means for producing a magnetically induced design in a coating containing magnetic particles

PHOTOLITHOGRAPHY PLATE FOR THE WATER LOTS PHOTOLITHOGRAPHY

PROCEDURE FOR THE PRODUCTION OF A STEALING I PRINTING FORM

ZUR HERSTELLUNG EINER DRIOGRAPHISCHEN DRUCKFORM GEEIGNETE PLATTE ODER WALZE

MATERIAL ZUR BILDAUFZEICHNUNG MIT LASERSTRAHLEN

PRE-SENSIBILIZED PLATE FOR THE PRODUCTION OF A LITHOGRAPHIC PRESSURE PLATE

LITHOGRAFI DRUCKELEMENTE WITH PRIMING LAYERS AND PROCEDURES FOR THE ILLUSTRATION OF THESE ELEMENTS

PROCEDURE FOR THE PRODUCTION OF A LITHOGRAFIEDRUCKPLATTENVORLÄUFERS FOR LITHOGRAFIETROCKENDRUCK

SULFONIUM SALTZ, HARDENABLE COMPOSITION, INK COMPOSITION, INK RADIATION PRINTING PROCESS, PRINTED ON MATERIAL, PROCEDURE FOR THE PRODUCTION OF A LITHOGRAPHIC PRESSURE PLATE AND LITHOGRAPHIC PRESSURE PLATE

PHOTOSENSITIVE PHOTOLITHOGRAPHY DISK FORERUNNER

PROCEDURE FOR THE PRODUCTION OF PHOTOLITHOGRAPHY FORMS

PROCEDURE FOR THE ATOMIZATION COATING WITH HIGH FLOW VELOCITY FOR THE PRODUCTION OF COATINGS, WEAR RESISTANT PRESSPLATTEN WITH REDUCED SELF-THERMAL STRESS

PROCEDURE FOR THE PRODUCTION OF BY ATZEN ERHALTLICHEN PRINTING FORM FOILS FROM ALZN ALLOYS

TO THE PRODUCTION OF A DRIOGRAPHI PRINTING FORM SUITABLE PLATE OR ROLLER

PROCEDURE AND DEVICE FOR THE PRODUCTION OF GRAVURE CYLINDERS

ALUMINIUM ALLOY FOR LITHOGRAPHIC PLATE

PHOTOLITHOGRAPHY PLATE.

PLATE, FOIL OR BAND-SHAPED MATERIAL OUT MECHANICALLY AND ELECTRO-CHEMICAL ROUGHENED UP ALUMINUM, A PROCEDURE FOR ITS PRODUCTION AND ITS USE AS CARRIER FUER LITHOGRAPHIC PRINTING PLATES.

PHOTOLITHOGRAPHY PLATE FROM STEEL WITH SEVERAL CHROMIUM LAYERS.

FLEXIBLE GRAVURE SLEEVE.

SUBSTRATE AND PROCEDURE FOR ITS PRODUCTION.

PROCEDURE FOR THE PRODUCTION OF A SEAL FOR A PRESSURE PLATE CYLINDER.

PROCEDURE FOR THE PRODUCTION OF STAMPINGS PROVIDED WITH A EMBOSSING ENGRAVING.

PROCEDURE FOR THE PRODUCTION OF SUBSTRATES FOR LITHOGRAPHIC PRINTING PLATES.

PRESSURE PLATE

Procedure for the Bemustern or coating a substrate

Photo-sensitive material for the production of a printing form

PHOTOLITHOGRAPHY PLATE AND PROCEDURE FOR YOUR PRODUCTION

FORM FOR ROTATIVE PRINTING ON, COATING OR COINING/SHAPING BAHNFÖRMIGEN MATERIALS AND PROCEDURE FOR THE PRODUCTION OF THE FORM

COMPOSITIONS AND SOLVENT-FREE PROCEDURE FOR THE PRODUCTION OF PHOTOLITHOGRAPHY PLATES, ON WHICH MEANS LASERS DIGITAL IS NOTED

HEAT SENSITIVE DRYING PHOTOLITHOGRAPHY PLATE

Tri metal pressure plate document

PASS LOW PRESSURE PLATE AND THUS MANUFACTURE VALUE DOCUMENT

Procedure for the production of a Verbundmateriales

PROCEDURE FOR THE PRODUCTION OF ONE BOEHMITSCHICHT ON ALUMINUM SURFACES

PLANOGRAPHIC PRINTING

Form of a printing element in an offset printing process

Method for high scan speed sputter coating to produce coated, abrasion resistant press plates with reduced built-in thermal stress

COMPOSITE PRINTING AND RELIEF PLATE

PLANOGRAPHIC PRINTING MASTER

LITHOGRAPHIC PLATE MATERIAL

There is provided a lithographic plate material with which a lithographic plate is prepared by the hot-melt transfer recording method utilizing an ink ribbon. The lithographic plate material has an image-receptive layer for hot-melt transfer recording that has water retention property or can be imparted with water retention property on a support, and the image-receptive layer has surface roughness (JIS-B0601-1994) of 0.15 .mu.m or more in terms of arithmetical mean deviation Ra and 1.00-3.00 .mu.m in terms of 10-point height of irregularities Rz. It shows good transfer property for ink layer of ink ribbon and excellent fixation property for ink layer, and it enables production of a printing plate having excellent printing durability.

WATERLESS LITHOGRAPHIC PRINTING PLATES

Provided is a media-fluid material set for use in preparing a waterless lithographic printing plate. The media fluid material set comprises a media with a support that bears a hydrophilic receiving surface having ink-receiving properties, together with a fluid material comprising a liquid carrier medium and a reactive transition metal complex of a fluorinated organic acid. After an application of the fluid material to the hydrophilic recieving surface, the reactive complex reacts to form a durable ink-releasing layer. Such a media-fluid material set can be advantageously used in preparing waterless lithographic printing plates with ink-releasing layers comprising such fluorinated reaction products. Also provided are imaged waterless lithographic printing plates with such ink-releasing layers made by an ink jet printing application or by laser-induced thermal ablation, and methods of making such waterless lithographic printing plates.

ELECTRO-RESPONSIVE PRINTING BLANKS AND THEIR INSCRIPTION

LITHOGRAPHIC PLATE

... 40365 CAN 5A Printing plates made from ceramic-coated, steel-based, lithographic plate precursors. The printing plate of this invention is a lithographic plate comprising a steel substrate, an adhesion promoting layer overlying the steel substrate, a ceramic layer overlying the adhesion promoting layer, and a photosensitive layer coated over the ceramic layer. The steel-based plate is more durable than aluminum based plates.

PLANOGRAPHIC PRINTING MASTER

INK JET RECORDING SHEET FOR PLATE-MAKING MASK FILM, AND PROCESS FOR PRODUCING FLEXOGRAPHIC PRINTING PLATE

To provide an ink jet recording sheet for plate-making mask film, which has good exposure characteristics and which presents good air release when contacted with a photosensitive resin plate under reduced pressure. An ink jet recording sheet for plate-making mask film, which comprises a substrate sheet and a porous layer formed thereon and has a total luminous transmittance of at least 70% as stipulated, by JIS-K7361-1, wherein the porous layer comprises 100 parts by mass a~ inorganic particles selected from the group consisting of alumina, alumina hydrate, silica and a silica-alumina composite and having an average particle size of at most 250 nm, from 1 to 30 parts by mass of a binder and from 0.1 to 3 parts by mass of porous particles having an average particle size of from 4 to 15 .mu.m, and has a thickness of from 5 to 50 .mu.m and an Oken type smoothness of from 200 to 10,000 seconds as stipulated by J. TAPPI No. 5-2.

PRINTING PLATES

NOVEL METHOD AND APPARATUS FOR ADDING PATTERNS TO GOLF BALLS

A method and apparatus for applying pattern to a spherical and dimpled surface are disclosed. The method comprises using a titanium carbon nitride pad printing cliche to transfer ink onto the pad used to add the ink onto the spherical and dimpled surface. The apparatus includes a cliche having a coating of titanium carbon nitride on the surface thereon.

Verfahren zur Herstellung von lithographischen Druckformfolien

Verfahren zum Übertragen eines thermoplastischen Mediums

Verfahren und Vorrichtung zum Übertragen von Zeichen

Druckzylinder für Stahlstichdruckmaschinen

DEVICE FOR STRETCHING THIN-WALLED METAL CYLINDERS.

VIRGIN GRAVURE PRINTING FORM AND METHOD OF MAKING THE SAME.

Plate material for direct platemaking of ink-jet printing and ink-jet printing method

A plate for inkjet computer-to-plate and an inkjet printing method are disclosed. The plate is obtained by coating adhesive on the surface of metallic base followed by coating ink repulsive liquid, and a polymer film can be further covered on the obtained plate as protective layer. The adhesive improves the adhesion force between the metallic base and the ink repulsive layer, and the obtained ink repulsive layer is not sticky to the printing ink during printing. Therefore, without undergoing the treatments of electrolytic graining and anodizing, the plate of the present invention can achieve excellent printing durability and high resolution, thereby avoiding serious environmental pollution of the waste acid solution and waste base solution produced in the process of electrolytic graining and anodizing.

Direct drawing-type waterless lithographic printing original plate

The objective is to provide a direct drawing-type waterless lithographic printing original plate which is highly sensitive and is not susceptible to formation of blisters, namely a direct drawing-type waterless lithographic printing original plate which has a wide latitude. Provided is a direct drawing-type waterless lithographic printing original plate which has at least a heat-sensitive layer and a silicone rubber layer on a substrate in this order. The direct drawing-type waterless lithographic printing original plate is characterized in that the heat-sensitive layer contains non-photosensitive particles and the average particle diameter of the non-photosensitive particles is not less than ½ of the average film thickness of a portion of the heat-sensitive layer where the non-photosensitive particles are not present.

IMAGING MEMBER FOR OFFSET PRINTING APPLICATIONS

An imaging member includes a surface layer comprising a fluoroelastomer-perfluoropolyether composite formed from a reaction mixture comprising a fluoroelastomer and a perfluoropolyether compound. Methods of manufacturing the imaging member and processes for variable lithographic printing using the imaging member are also disclosed. 1. An imaging member comprising a surface layer , wherein the surface layer includes a fluoroelastomer-perfluoropolyether composite formed from a reaction mixture comprising a fluoroelastomer and a perfluoropolyether compound.2. The imaging member of claim 1 , wherein the weight ratio of fluoroelastomer to perfluoropolyether compound is from about 50:40 to about 85:5.3. The imaging member of claim 1 , wherein the perfluoropolyether compound includes terminal amino groups.4. The imaging member of claim 1 , wherein the perfluoropolyether compound includes terminal oxysilane groups claim 1 , and the reaction mixture further comprises an oxyaminosilane.5. The imaging member of claim 4 , wherein the oxyaminosilane is an amino-terminated siloxane.6. The imaging member of claim 5 , wherein the amino-terminated siloxane is an aminopropyl terminated polydimethylsiloxane.7. The imaging member of claim 5 , wherein the amino-terminated siloxane has a molecular weight of from about 500 to about 1500.8. The imaging member of claim 4 , wherein the mole ratio of the oxyaminosilane to the perfluoropolyether compound is from about 2:1 to about 1:10.9. The imaging member of claim 1 , wherein the surface layer further comprises an infrared-absorbing filler.10. The imaging member of claim 9 , wherein the filler is present in an amount of from 5 to about 20 weight percent of the surface layer.11. The imaging member of claim 9 , wherein the filler is selected from the group consisting of carbon black claim 9 , iron oxide claim 9 , carbon nanotubes claim 9 , graphite claim 9 , graphene claim 9 , and carbon fibers.12. The imaging member of claim 9 , wherein the ...

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

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), poly(styrene-isoprene-styrene), poly(styrene-isoprene), poly(styrene-ethylene-propylene), poly(styrene-ethylene-propylene-styrene), poly(styrene-ethylene-butylene-styrene), poly(styrene-ethylene-butylene), poly(styrene-ethylene-propylene), poly(styrene-ethylene-butylene), 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. 1. A printing apparatus for monotype prints , comprising:{'sub': n', 'n', 'n', 'n', 'n', 'n, 'a printing plate including a viscoelastic gel composition having a viscoelastic polymer selected from the group consisting of a hydrogenated poly-isoprene/butadiene polymer, poly(styrene-butadiene-styrene), poly(styrene-butadiene), poly(styrene-isoprene-styrene), poly-(styrene-isoprene), poly(styrene-ethylene-propylene), poly(styrene-ethylene-propylene-styrene), poly(styrene-ethylene-butylene-styrene), poly(styrene-ethylene-butylene), poly(styrene-ethylene-propylene), poly(styrene-ethylene-butylene), polystyrene, poly-butylene, poly(ethylene-propylene), poly(ethylene-butylene), polypropylene, poly-ethylene, polyurethane and silicone, and a combination thereof, and a plasticizing oil, said viscoelastic gel composition having a smooth surface and being formed as a sheet and shaped for use as a printing plate, said printing apparatus excluding a manufactured pressure tool.'}2. The printing apparatus for monotype prints according to claim 1 , further comprising a supporting substrate on one ...

FLEXOGRAPHIC PRINTING PLATE MATERIAL

According to one embodiment, a flexographic printing plate material includes a printing layer for engraving containing rubber, a compressive layer, a base fabric layer provided between the printing layer for engraving and the compressive layer, and a reinforcement layer. 1. A flexographic printing plate material comprising:a printing layer for engraving containing rubber;a compressive layer;a base fabric layer provided between the printing layer for engraving and the compressive layer; anda reinforcement layer.2. The flexographic printing plate material according to claim 1 , wherein the printing layer for engraving further comprises an inorganic porous substance having a specific surface area of greater than or equal to 40 mand less than or equal to 1000 mper 1 g of the rubber.3. The flexographic printing plate material according to claim 1 , wherein the compressive layer has a porosity of greater than or equal to 10% and less than or equal to 70%.4. The flexographic printing plate material according to claim 1 , wherein the printing layer for engraving has a hardness of greater than or equal to 40 and less than or equal to 85 claim 1 , in accordance with JIS-A.5. The flexographic printing plate material according to claim 1 , whereinthe plate material has a thickness of greater than or equal to 1.5 mm and less than or equal to 2.75 mm, a ratio of a thickness of the compressive layer to the thickness of the plate material is 10% or less, and a ratio of a thickness of the printing layer for engraving to the thickness of the plate material is greater than or equal to 22% and less than or equal to 65%. This application is a Continuation Application of PCT Application No. PCT/JP2013/066253, filed Jun. 12, 2013, the entire contents of which are incorporated herein by reference.The present invention relates to a plate material used in flexography, capable of printing on various objects to be printed such as paper, cloth, polywood, and film bags. The plate material for ...

FLEXOGRAPHIC PRINTING PLATE MATERIAL

According to one embodiment, a flexographic printing plate material includes a printing layer for engraving containing rubber, a compressive layer, a base fabric layer provided between the printing layer for engraving and the compressive layer and a reinforcement layer. The plate material has a thickness of more than 2.75 mm and less than or equal to 7 mm. A ratio of a thickness of the printing layer for engraving to the thickness of the plate material is greater than or equal to 10% and less than or equal to 78%, and a ratio of a thickness of the compressive layer to the thickness of the plate material is greater than or equal to 6% and less than or equal to 78%. 1. A flexographic printing plate material comprising: a compressive layer;', 'a base fabric layer provided between the printing layer for engraving and the compressive layer; and', 'a reinforcement layer, wherein', 'the plate material has a thickness of more than 2.75 mm and less than or equal to 7 mm, a ratio of a thickness of the printing layer for engraving to the thickness of the plate material is greater than or equal to 10% and less than or equal to 78%, and a ratio of a thickness of the compressive layer to the thickness of the plate material is greater than or equal to 6% and less than or equal to 78%., 'a printing layer for engraving containing rubber;'}2. The flexographic printing plate material according to claim 1 , wherein the printing layer for engraving further comprises an inorganic porous substance having a specific surface area of greater than or equal to 40 mand less than or equal to 1000 mper 1 g of the rubber.3. The flexographic printing plate material according to claim 1 , wherein the compressive layer has a porosity of greater than or equal to 10% and less than or equal to 70%.4. The flexographic printing plate material according to claim 1 , wherein the printing layer for engraving has a hardness of greater than or equal to 40 and less than or equal to 85 claim 1 , in accordance ...

GRAVURE PRINTING PLATE AND MANUFACTURING METHOD THEREOF, GRAVURE PRINTING MACHINE, AND MANUFACTURING METHOD FOR LAMINATED CERAMIC ELECTRONIC COMPONENT

Banks, as well as a plurality of substantially recess-shaped cells defined by the banks, are provided in an image section formed in a gravure printing plate. Each of edge cells located along an outer edge of the image section is provided with a projecting portion that projects from a part of a base surface of that edge cell, and each projecting portion is distanced from the banks and located closer to the outer edge than the center of the corresponding edge cell. Preferably, the projecting portions and the banks that face the outer edge are positioned at a predetermined interval from the outer edge, and substantially frame-shaped recess portions that extend continuously along the outer edge are provided in the image section. 1. A gravure printing plate used for transferring a paste film onto a printing target material through gravure printing , the plate comprising:an image section to which a printing paste for forming the paste film is supplied,wherein the image section is provided with banks and a plurality of substantially recess-shaped cells defined by the banks; anda plurality of the cells being provided with a projecting portion that projects from a part of a bottom surface of the cell, each projecting portion being distant from the banks and being provided in such a location that a distance from the projecting portion to an outer edge of the image section is shorter than a distance from the projecting portion to the nearest bank.2. The gravure printing plate according to claim 1 ,where in the image section, the projecting portions are located with a first predetermined interval from the outer edge of the image section, and the banks that face the outer edge are located with a second predetermined interval from the outer edge of the image section, and substantially frame-shaped recess portions that extend continuously along the outer edge are defined by the projecting portions, the banks and the first and second intervals.3. The gravure printing plate ...

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

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), poly(styrene-isoprene-styrene), poly(styrene-isoprene), poly(styrene-ethylene-propylene), poly(styrene-ethylene-propylene-styrene), poly(styrene-ethylene-butylene-styrene), poly(styrene-ethylene-butylene), poly(styrene-ethylene-propylene), poly(styrene-ethylene-butylene), 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. 112-. (canceled)13. A printing method using a reusable non-gelatin , viscoelastic gel printing plate for producing a plurality of prints , comprising the steps of:{'sub': n', 'n', 'n', 'n', 'n', 'n, 'applying a layer of acrylic paint to a reusable non-gelatin, viscoelastic gel printing plate comprising a viscoelastic gel composition having a viscoelastic polymer selected from the group consisting of a hydrogenated poly-isoprene/butadiene polymer, poly(styrene-butadiene-styrene), poly(styrene-butadiene), poly(styrene-iso-prene-styrene), poly-(styrene-isoprene), poly(styrene-ethylene-propylene), poly(styrene-ethylene-propylene-styrene), poly(styrene-ethylene-butylene-styrene), poly(styrene-ethylene-butylene), poly(styrene-ethylene-propylene), poly(styrene-ethylene-butylene), polystyrene, polybutylene, poly(ethylene-propylene), poly(ethylene-butylene), polypropylene, polyethylene, polyurethane, polyethylene and silicone, and a combination thereof, and a plasticizing oil, said viscoelastic gel composition excludes gelatin and has a smooth surface formed as a sheet and shaped for use as ...

PRINTING PLATE AND THE PREPARATION METHOD THEREOF AND A PRINTING METHOD

A printing plate, its preparation method, and a printing method. The printing plate comprises a substrate, an ink repulsive layer attaching to the surface of the substrate and a graphic-text layer attaching to partial surface of the ink repulsive layer, the ink repulsive layer comprises fluoropolymer and silicon-containing nano-particle dispersed in the fluoropolymer, the fluoropolymer comprises fluorine-containing structural unit and optional acrylate-based structural unit. The present invention constitutes a graphic-text area which is affinity to water-based printing ink and an area without graphic-text which is repulsion to water-based printing ink on the surface of the planographic printing plate. 1. A printing plate , comprising a substrate , an ink repulsive layer attaching to surface of the substrate and a graphic-text layer attaching to partial surface of the ink repulsive layer , the ink repulsive layer comprises fluoropolymer and silicon-containing nano-particle dispersed in the fluoropolymer , the fluoropolymer comprises fluorine-containing structural unit and optional acrylate-based structural unit.2. The printing plate according to claim 1 , wherein relative to 100 parts of fluoropolymer claim 1 , the silicon-containing nano-particle is in a content of 1-150 parts by weight.3. The printing plate according to claim 1 , wherein based on the fluoropolymer claim 1 , the fluorine-containing structural unit is in a content of 50-100% by weight claim 1 , the acrylate-based structural unit is in a content of 0-50% by weight.4. The printing plate according to claim 1 , wherein the fluorine-containing structural unit is derived from fluorine-containing monomer containing ethylenically unsaturated double bond claim 1 , and the fluorine-containing monomer containing ethylenically unsaturated double bond is at least one selected from the group consisting of perfluoroalkyl (meth)acrylate claim 1 , perfluoroamido alkyl (meth)acrylate claim 1 , perfluorosulfonamido ...

PRINTING

A method of preparing a printing form precursor for printing, or a printed circuit board precursor or a semiconductor precursor, the method comprising the step of applying electromagnetic radiation having a pulse duration of not greater than 1×10seconds, in an imagewise manner, to an imagable surface of the precursor. The imaging process may cause ablation of the coating of the precursor or permit its development in a developer. In each case the imaging radiation needs not be tuned to imaging chemistry (if any) present in the coating. Alternatively the imaging process may induce a change of hydrophilicity or hydrophobicity, or other change of state, of an uncoated substrate. 1. A method of preparing a printing form precursor for printing , the method comprising the step of applying electromagnetic radiation having a pulse duration of not greater than 1×10seconds and a fluence of at least 100 mJ/cm , in an imagewise manner , to an imageable surface of the printing form precursor ,wherein the imageable surface is aluminium oxide.2. A method as claimed in claim 1 , wherein an average frequency of the pulses is at least 100 pulses per second.3. A method as claimed in claim 1 , wherein a fluence does not exceed 20 claim 1 ,000 mJ/cm.4. A method as claimed in claim 1 , wherein an incubation number N in the method is 1 or a larger number up to 10.5. A method as claimed in claim 1 , wherein a profile of a laser beam applying the electromagnetic radiation is Gaussian claim 1 , square or rectangular.6. A method as claimed in claim 1 , wherein the method employs claim 1 , as an imaging device claim 1 , a nanosecond laser claim 1 , a femtosecond laser claim 1 , or a picosecond laser.7. A method as claimed in claim 1 , wherein the printing form precursor is a coated printing form precursor claim 1 , wherein a) the coating does not contain an imaging chemistry claim 1 , or b) the coating does contain an imaging chemistry; wherein in either case the image is formed in the coating ...

DRY LITHOGRAPHIC IMAGING AND PRINTING WITH PRINTING MEMBERS HAVING ALUMINUM SUBSTRATES

Negative-working, IR-sensitive dry printing plates utilize an oleophobic topmost layer, a nitrocellulose-based imaging layer ablatable by laser discharge, and a grained metal substrate with no heat-insulating layer intervening between the imaging layer and the substrate.

PRINTING PROCESS USING SOFT PHOTOPOLYMER PLATES

The present invention relates to using soft photopolymer plates in a printing process, and more specifically, to an apparatus and methods of using soft photopolymer materials to decorate an exterior surface of cylindrical metallic containers with high definition graphics and other indicia. 1. A method of using a soft photopolymer plate in a printing process to decorate an exterior surface of a metallic container , comprising:providing a first image to be printed onto the exterior surface of the metallic container;transferring said first image to a predetermined portion of a face portion of the soft photopolymer plate;removably affixing the soft photopolymer plate with a transferred first image onto a blanket cylinder of a decorator;attaching printing plates to a plate cylinder of the decorator;applying ink from an inker to the printing plates;transferring the ink from the printing plates to at least a portion of the soft photopolymer plate and the transferred first image; andtransferring the ink from the soft photopolymer plate to the exterior surface of the metallic container, wherein the metallic container is decorated with the first image.2. The method of claim 1 , wherein transferring the first image to the predetermined portion of the face portion of the soft photopolymer plate further comprises:creating a film negative of the first image;placing the film negative on the predetermined portion of the face portion of the soft photopolymer plate;exposing the soft photopolymer plate and the film negative to a light source, wherein a material of the soft photopolymer plate hardens in predetermined locations where light passes through the film negative, and wherein the material of the photopolymer plate remains unexposed and soft in predetermined locations where the light is blocked by the film negative;removing the film negative from the soft photopolymer plate; andplacing the soft photopolymer plate in a washing station and cleaning the soft photopolymer plate to ...

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

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), poly(styrene-isoprene-styrene), poly(styrene-isoprene), poly(styrene-ethylene-propylene), poly(styrene-ethylene-propylene-styrene), poly(styrene-ethylene-butylene-styrene), poly(styrene-ethylene-butylene), poly(styrene-ethylene-propylene), poly(styrene- ethylene-butylene), 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. 112-. (canceled)13. A printing apparatus using a non-gelatin , viscoelastic gel printing plate for producing a plurality of prints , comprising:an acrylic paint;{'sub': n', 'n', 'n', 'n', 'n', 'n, 'a non-gelatin, viscoelastic gel printing plate capable of producing a first print, said non-gelatin, viscoelastic gel printing plate comprising a viscoelastic gel composition having a viscoelastic polymer selected from the group consisting of a hydrogenated poly-isoprene/butadiene polymer, poly(styrene-butadiene-styrene), poly(styrene-butadiene), poly(styrene-iso-prene-styrene), poly-(styrene-isoprene), poly(styrene-ethylene-propylene), poly(styrene-ethylene-propylene-styrene), poly(styrene-ethylene-butylene-styrene), poly(styrene-ethylene-butylene), poly(styrene-ethylene-propylene), poly(styrene-ethylene-butylene), polystyrene, polybutylene, poly(ethylene-propylene), poly(ethylene-butylene), polypropylene, polyethylene, polyurethane, polyethylene and silicone, and a combination thereof, and a plasticizing oil, said viscoelastic gel composition excludes gelatin and has a smooth surface ...

乾式平版印刷用インキ反撥材料

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Method of making a form for flat printing

Method of imaging a zirconia ceramic surface to produce a lithographic printing plate

Lithographic printing is carried out by a novel process utilizing a zirconia ceramic as a printing plate. In this process, the surface of the zirconia ceramic printing plate is imagewise exposed to radiation which transforms it from a hydrophilic to an oleophilic state or from an oleophilic to a hydrophilic state, thereby creating a lithographic printing surface which is hydrophilic in non-image areas and is oleophilic and thus capable of accepting printing ink in image areas. The zirconia ceramic printing plate utilized in this process is capable of extremely long printing runs, is especially well adapted for direct digital laser imaging using images that are electronically captured and digitally stored, and can be reused by erasing the image from the ceramic surface by thermally-activated oxidation or laser-assisted oxidation.

Printing Plate

본 발명은 유리기판 상에 금속층을 형성하는 단계; 상기 금속층을 소정 형상으로 패터닝하는 단계; 및 상기 금속층을 마스크로 하여 유리기판을 식각하는 단계를 포함하여 구성된 인쇄판 제조방법 및 인쇄판에 관한 것으로서, The present invention comprises the steps of forming a metal layer on a glass substrate; Patterning the metal layer into a predetermined shape; And relates to a printing plate manufacturing method and printing plate comprising a step of etching the glass substrate using the metal layer as a mask, 본 발명은 인쇄판의 패턴 형성을 위해 종래와 달리 유기물을 이용하지 않고 유리기판 자체를 이용함으로써, 미세한 패턴 형성이 가능하다. In the present invention, unlike the conventional method for forming a pattern of a printing plate, by using the glass substrate itself without using an organic substance, fine pattern formation is possible. 인쇄판 Print edition

Surface treatment of direct drawing type waterless planographic printing plate material

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Lithographic printing plates for use with laser-discharge imaging apparatus

METHOD OF MANUFACTURING PRINTING PLATE

Printer

Apparatus and Method of Manufacturing Large Area Cliche, Large Area Cliche, and Pattern Printing Apparatus Having the Same

Disclosed are an apparatus and method for manufacturing a wide printing cliché, a wide printing cliché, and a pattern printing apparatus having the same. According to an embodiment of the present invention, the apparatus includes: a loader which allows a mother glass, an adhesive film, a printing cliché glass consisting of multiple unit printing cliché glasses including pattern formed thereon, and a protection film to be stacked in order to form the wide printing cliché and includes multiple transfer rollers; an attaching device that includes multiple heating lamps for attaching the printing cliché glass to the mother glass by heating the adhesive film constituting the wide printing cliché, and a transfer member for unlading the wide printing cliché; an unloader that includes a containing member for containing the wide printing cliché unloaded by the transfer member, a conveyer unit for controlling the containing member to be able to move horizontally and vertically, and a work plate to which the mother glass adheres and is fixated; and a pressing unit which is provided on the unloader to be able to move up and down and makes the printing cliché glass, constituting the wide printing cliché the, be flat.

Method for manufacture of lithographic printing plate precursor for dry lithographic printing

A method for manufacturing a lithographic printing plate precursor requiring no dampening water including: a support, a light-to heat conversion layer; and a silicone rubber layer in this order. The method includes: subjecting a surface of the support to a corona discharge treatment in a discharge amount of 0.01 to 0.12 kW/m 2 /minute; or subjecting a surface of the support to a corona discharge treatment so that the surface has an element ratio of oxygen to carbon of 0.41 or more, which is measured by an X-ray photoelectron spectroscopic; and providing the light-to-heat conversion layer directly on the surface of the support.

Lithographic printing plates containing image-support pigments and methods of printing therewith

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 image-support pigments that promote straight-line travel of the spark to the surface of the plate, thereby promoting accurate imaging.

IMPROVEMENTS IN DRY PLANOGRAPHIC PRINTING

BOARD FOR DRY PLANOGRAPHIC PRINTING

L'invention concerne l'impression planographique sans solution de mouillage. Elle a pour objet de nouvelles planches présentant une surface à base d'un polyuréthanne fluoré et se prêtant spécialement bien à la formation d'images par électrophotographie. Les nouvelles planches de l'invention sont préférées pour tirer des copies de bonne qualité sans les inconvénients de l'utilisation d'une solution de mouillage. The invention relates to planographic printing without fountain solution. It relates to new plates having a surface based on a fluorinated polyurethane and particularly suitable for the formation of images by electrophotography. The novel plates of the invention are preferred for making good quality copies without the drawbacks of using a fountain solution.

Lithographic printing plate prodn using ink resistant film - in which ink receptive particles are pressed in conformity with an image

A polymeric adhesive (e.g. polyamide, polyester, polyurethane etc.) surface of a substrate (e.g. paper, aluminium, plastic) is covered with a layer of ink resistant material comprising an organopolysiloxane elastomer/e.g. polymer/copolymer) or a heterophase polymer including a silicone phase (e.g. silicone elastomer). Particles (e.g. developer particles) and a sensitized (e.g. electrophotographically) print sheet) are transferred to the surface of the ink resistant layer according to an image, and the particles are pressed (at e.g. 14 kgm/cm2) into the ink resistant layer until they touch the adhesive coating and are bonded to the substrate. The particles form an ink receptive region and where the adhesive is ink receptive the particles may be subsequently removed.

Patent FR2225292A1

PRINTING PLATE AND METHOD FOR MANUFACTURING THE SAME.

Une plaque d'impression et un procédé pour fabriquer celle-ci sont décrits.Le procédé comprend l'application d'une résine photosensible sur la couche de métal; le modelage de la résine photosensible selon la forme prédéterminée; la gravure de la couche de métal en utilisant la résine photosensible mise en forme pour agir en tant que masque; et l'enlèvement de la résine photosensible mise en forme.Premièrement, une résine photosensible (300) est formée sur la couche de métal (200) du substrat en verre (100); ensuite la résine photosensible (300) est mise en forme, selon la forme prédéterminée, par photolithographie; la couche de métal (200) est alors gravée en utilisant la résine photosensible (300) mise sous une forme qui lui permet d'agir en tant que masque. La couche de métal (200) est gravée en utilisant une gravure sèche ou une gravure humide; la résine photosensible (300) mise en forme est ensuite enlevée. A printing plate and a method for manufacturing the same are described. The method comprises applying a photosensitive resin to the metal layer; molding the photosensitive resin into the predetermined shape; etching the metal layer using the shaped photosensitive resin to act as a mask; and removing the shaped photosensitive resin.First, a photosensitive resin (300) is formed on the metal layer (200) of the glass substrate (100); then the photosensitive resin (300) is shaped into the predetermined shape by photolithography; the metal layer (200) is then etched using the photosensitive resin (300) put into a form which allows it to act as a mask. The metal layer (200) is etched using dry etching or wet etching; the shaped photosensitive resin (300) is then removed.

Plate, useful for printing in humid offset, comprises an encrophilic surfaces on its surface corresponding to printing patterns

Plate (A) useful for printing in humid offset, comprises an encrophilic surfaces on its surface corresponding to patterns to print, where at least one part of the encrophilic surfaces is lightened that is (A) containing small non encrophilic surface (I) of lightening in which a part of the lightened encrophilic surfaces is distributed in at least two groups. Plate (A) useful for printing in humid offset, comprises a encrophilic surfaces on its surface corresponding to patterns to print, where at least one part of the encrophilic surfaces is lightened that is (A) containing small non encrophilic surface (I) of lightening in which a part of the lightened encrophilic surfaces is distributed in at least two groups in which a first group of (I) has a sufficient area for its effectiveness and sufficient quantity to reduce at least 4% of the encrophilic surface concerned to lightening; and a second group of (I), which is inefficient by their too small area and the average area of (I) of the second group is generally lesser than 2/3 of the average area of (I) of the first group; (I) of the first and second group is distributed in a manner to minimize, preferably avoid watery markings. Independent claims are also included for: **LISTN**the preparation of (A); and #procedure of printing in humid condition comprising generating a copy of the coating to the encrophilic surfaces (which corresponds to patterns to print comprising small non-encrophilic surfaces of lightening), fixing the copied coating to a cylindrical coating-holder, moisturizing and inking the fixed copied coating or directly inking the fixed copied coating with an ink which is mixed with a base (ink/water), successively transferring the held ink on the lightening encrophilic surfaces and straining the material to be printed.**/LISTN**.

Patent FR2230498B1

Patent FR2225291B1

Lithographic plate prodn - using anti adhesive organopoly siloxane surfaces with good ink receptivity

An electrographic product specif. for preparing an ink receptive image for a lithographic plate, comprises a coat layer contg. a photoconductor and a hardened anti-adhesive organopolysiloxane surface on which the org. gps. and the Si atoms are in the ratio of 1.9-2.1. The prod. allows the use of electrophotographic processes and electrostatic toners for preparing lithographic plates in dry processes where the drawbacks encountered in prior art, e.g. rubbing, washing, use of masks etc, are obviated. The plate has good ink receptivity and no wetting agents are used.

Patent FR2230498A1

Printing plates using silicone elastomers - image deposited on surface forced into elastomer layer forming ink receptive areas avoids need for wetting system

Process for a printing layer by first coating a support with an ink repelling layer of either an organopolysiloxane elastomer or heterophase polymeric compsns. contg. a silicon phase; an image is deposited on the surface of the layer then forced by pressure into the layer thereby forming a layer with ink receptive image zones. The polymers are either copolymers of an organopolysiloxane and a polymeric prod or an organopolysiloxane and a polymeric prod in the amorphous state having a Tg of >= the ambient temp. The layer is pref. 0.1 to 50 mu thick and to push the image into the layer a pressure of >=14 kg/cm2 is used. Pref. silicone gums are used which are hardenable at normal temps. or by heating or a mixt of both. Partic used for direct lithographic printing where a heavy ink coating is required. Avoids the complications of photosensitive layer processes and no wetting system is required.

Lithographic printing plates containing image-support pigments

Pre-sensitised dry lithographic printing plate with primer coat - based on casein, soya protein and/or albumin, with good solvent resistance etc.

Presensitised dry lithographic printing plate consists of a substrate, primer coat, light-sensitive coat and silicone rubber coat. The novelty is that the primer coat contains protein(s) selected from casein, soya protein and albumin. The primer coat contains casein or a combination of this and soya protein and/or albumin and is 0.1-50, pref. 1.0-20 microns thick. The amt. of protein is 10-98, pref. 30-95 (wt.)% of the primer coat. This coat also contains a hardener for gelatin; and a silane coupler, pref. of formula R3-nSi(X)Yn (I). R = H or 1-5C alkyl; X = alkyl, vinyl or an organic gp. with a functional gp. which can be bound to or has an affinity for an organic matrix polymer; pref. methyl, N-(beta-aminoethyl)- gamma-aminopropyl, gamma-methacryloyl-oxypropyl, N-(beta-(N-vinylbenzyl amino)ethyl- gamma-aminopropyl, gamma-glycidoxypropyl, gamma-mercaptopropyl, gamma-chloropropyl, gamma-anilinopropyl or C18H37-N(+)(CH3)2-(CH2)3-; Y = an organic gp., which is hydrolysed to produce an OH gp.; pref. 1-5C alkoxy, 3-5C alkoxyalkoxy, 2-5C acyloxy, dialkylamino, Cl or trimethylsilylamino; n = 2 or 3. In particular, the coupler is N-(beta-aminoethyl) -gamma-aminopropyl -trimethoxysilane, N-(beta-aminoethyl)- gamma-aminopropylmethyl dimethoxysilane, gamma-glycidoxypropyl trimethoxysilane (IA) or vinyltrichlorosilane. It pref. is in a coupling layer between the substrate and primer coat and is used in an amt. of 1-50, pref. 3-20wt.% w.r.t. the protein. The light-sensitive coat pref. contains 1.0-99.9 pts. monomer with photopolymerisable, ethylenically unsatd. double bond(s) and a b.pt. not less than 100 deg.C, which is not volatile at room temp., or an oligomer of this, 0.1-200 pts. photopolymerisation initiator, 0.01-1.0 pts. thermal polymerisation inhibitor and 0.01-95.0 pts. polymer or inorganic powder as filler, to provide dimensional stability. USE/ADVANTAGE - The plate has solvent resistance, ink affinity and proofing properties

Device for the pictorial description of a printing form

Patent FR2225289B1

System and method to program a printing form

To program or selectively image or erase a printing form (9) of ferroelectric material, in which the state of polarization of discrete areas of the printing form is controlled, utilizes an electron beam (12) generated by an electron gun (1, 3) which is impinged against a surface area (30) of the ferroelectric printing form. The beam is controlled in accordance with an image to be recorded, for subsequent printing, on the printing form; it is directed to the ferroelectric material by an electron beam focussing and accelerating system, for example similar to the system used in a television camera. The printing form (g) can be sealed with respect to an evacuated electron gun by a slide seal (14, 15) with a vacuum lock, or by a ferrofluidic vacuum lock (18, 20); or the electron gun can be closed by a Lenard window, or an end plate (27) with micro channels or micro ducts (26) therein. The intensity of the beam can be controlled by a suitable image control unit (32a).

ALLEGES OFFSET PLATES, PREPARATION AND USE

Printing master

1458722 Foamed cured silicone gums XEROX CORP 10 April 1974 [13 April 1973] 15894/74 Heading C3C [Also in Divisions B2 and B6] A lithographic printing plate is prepared by depositing particles on a layer of an uncured silicone gum containing a blowing agent, blowing and curing the silicone layer, and removing at least some of the particulate material. The particulate material resists escape of the blowing gas so that the plate has a porous ink-receptive structure in those areas covered by particulate material. The particulate material may be applied image-wise, e.g. as a toner image produced electrophotographically, or uniformly. Particulate material may be removed, after blowing, by evaporation, abrasion or dissolution. The silicone may be room temperature vulcanizable or heat-cured. The blowing agent may be activated by heat or by radiation, e.g. U.V. light. In the examples silicone gums containing ethylene carbonate or 2,2<SP>1</SP>-azo-bis(2- methylpropionitrile) were coated on to aluminium sheets, the coatings were contacted with developed images made of toner particles, heated and washed with acetone to remove all the toner particles and leave foamed areas corresponding to the toner patterns.

Resilient lithographic masters for direct printing

Lithographic masters for improved image quality in direct printing process are provided. The masters are formed with a relatively soft elastomeric or resilient layer on a suitable supporting master substrate. An image layer of up to 2.5 microns is supported by the resilient layer. A resilient blanket supports the printing master or receiver sheet.

Method of producing lithographic printing form and press plate

Printing machine for prodn. of pattern directly in press

A printing machine for prodn. of a pattern directly in the press, comprises: (a) a cylindrical surface (4) to be illustrated, on which the patterns are formed; (b) a coating unit (12) arranged close to the surface (4), to be moved over the surface (4) and to provide this with a thin layer (17) of changeable material, to convert the surface or regions of the surface from a first water-sensitive property to an opposite water-sensitive property; (c) a drying unit (13) for the changeable material, close to the surface (4), able to treat the material until it is dry; (d) a unit (14) to change the layer (17) on the surface (4) to form a required pattern of regions carrying printing ink and regions repelling printing ink; (e) a unit (6) for coating the layer of material (17) with printing ink, to form a coloured picture; (f) units (2, 3) to transfer the picture to paper (1); and (g) a cleaning unit (7) arranged close to the surface (4) and able to clean the surface (4) which carries (part of) the changeable material after the transfer of the pattern onto a rubber cloth cylinder (3). Pref. the layer (17) has regions of hydrophobic or hydrophilic properties, or water-sol. or water-insol. properties, and is treated by a radiation source (14), esp. a multi-radiation laser head, or a combination of a wide band light source and a light scanner. The layer (17) is a tetrahydro-pyranyl modified methyl acrylate dil. with a ketone solvent.

Lithographic printing members having secondary ablation layers for use with laser-discharge imaging apparatus

Lithographic printing plates suitable for imaging by means of laser devices. Laser output ablates one or more plate layers, resulting in an imagewise pattern of features on the plate. The image features exhibit an affinity for ink or an ink-abhesive fluid that differs from that of unexposed areas. The plates also include a secondary ablation layer that ablates only partially, and in a controlled fashion, as a result of destruction of overlying layers.

PRINTING MATRIX AND PROCEDURE TO PRODUCE IT

Metal plate for manufacturing a gravure printing sleeve, method for the manufacture thereof, as well as a roller provided with a pattern

A description is given of a metal plate which is suitable, in particular, for the manufacture of an gravure printing sleeve. Said metal plate comprises a mechanically engravable metal layer on which there is at least one mechanically engravable a harder top layer, which top layer is wear-resistant, has a material stretch of 0.1-5%, and has a Vickers hardness of 400-1050. The mechanically engravable metal layer has a material stretch of less than 3% and a Vickers hardness of approximately 80-350. The top layer can be chosen from the metals or metal alloys which can be electrolessly or electrolytically deposited, or it may be composed of ceramic material. Expediently, the top layer can be hardened so that, after engraving, the metal plate has an engraved top layer having a still higher Vickers hardness. A method for manufacturing the present composite metal plate comprises applying, moreover, at least one top layer having a hardness which is greater than the hardness of the engravable metal layer and a thickness of not more than 10 µm to the mechanically engravable metal layer. Further, a process for mechanically engraving a pattern into an engravable metal basic layer is described.

FLAT PRINTING PLATE AND PROCESS FOR FLAT PRINTING USING SUCH PLATE.

A processless planographic printing plate

A lithographic printing plate suitable for digital imaging by means of laser exposure is described. The plate consists of a substrate having coated thereon a layer or layers having an ink repelling top surface. The top layer contains a unique ink repelling co-polymer of poly(siloxanes) and is subject to thermal decomposition. At least one of the coated layers contains a laser radiation absorbing material to convert light to heat. The heated top layer is loosened or removed during exposure rendering the imaged surface ink accepting. The process requires no wet development step and no wiping. The method is well suited for use with relatively inexpensive and reliable high power diode lasers or ND ++ YAG lasers and can be configured as a flat bed, internal or external drum imager. It is well suited for imaging in a plate setter or directly on press. The material can be precoated on suitable supports or it can be sprayed, painted or coated on a reusable drum, plate or sleeve on press.

Patent JPS501804A

Lithographic Printing Members Having Secondary Ablation Layers for Use With Laser-Discharge Imaging Apparatus

Lithographic printing plates suitable for imaging by means of laser devices. Laser output ablates one or more plate layers, resulting in an imagewise pattern of features on the plate. The image features exhibit an affinity for ink or an ink-abhesive fluid that differs from that of unexposed areas. The plates also include a secondary ablation layer that ablates only partially, and in a controlled fashion, as a result of destruction of overlying layers.

No dampening water required Photosensitive lithographic printing plate

PLANOGRAPHIC PRINT PATTERN AND METHOD OF MANUFACTURING AND USE THEREOF

PRESENSITIZED PLANOGRAPHIC PLATE WHICH DOES NOT REQUIRE HYDROPHILIZATION SOLUTION

Lithographic press plate for dry printing

Lithographic printing plate requiring no damping water

Method of making offset printing plate

Wet lithographic printing constructions incorporating metallic inorganic layers

Lithographic printing members include a traditional flood-exposed photopolymer layer applied to one or more layers based on certain metallic inorganic materials. The metallic inorganic material overlies a substrate, which is preferably a relatively thick metal for dimensional stability and strength, but may also be a polymeric or other material. An intermediate tying layer may anchor the metallic inorganic material to the substrate. The plate is exposed and developped in the conventional manner, with the portions of the metallic inorganic layer exposed by development serving as a hydrophilic printing surface (that is, a surface accepting fountain solution).

Printing plate material and production and regenerating methods thereof

A printing plate material which can be adapted to digitization of the printing process and recycled and a method for renewing it. As the printing plate material, there can be used one which includes a substrate on the surface of which a coat layer containing a titanium oxide photocatalyst and at least one member selected from salts or oxides of Fe 2+ , Ni 2+ , Mn 2+ , Cr 3+ , and Cu 2+ is formed. In an initial state of the printing plate as prepared, it is adjusted to a state where the surface of the coat layer is hydrophobic. This surface is irradiated with ultraviolet rays to convert a part of the surface to a hydrophilic surface. This conversion is performed based on digital data corresponding to an image to be printed. In this case, the hydrophobic portion is used as a printing image portion and the hydrophilic portion is used as a non-printing image portion. After completion of the printing, the compound is applied again to change the surface of the coat layer into the initial state of the printing plate as prepared, in which the surface of the coat layer exhibits hydrophobicity again.

Planographic printing master

Plate material for direct platemaking of ink-jet printing and ink-jet printing method

A plate for inkjet computer-to-plate and an inkjet printing method are disclosed. The plate is obtained by coating adhesive on the surface of metallic base followed by coating ink repulsive liquid, and a polymer film can be further covered on the obtained plate as protective layer. The adhesive improves the adhesion force between the metallic base and the ink repulsive layer, and the obtained ink repulsive layer is not sticky to the printing ink during printing. Therefore, without undergoing the treatments of electrolytic graining and anodizing, the plate of the present invention can achieve excellent printing durability and high resolution, thereby avoiding serious environmental pollution of the waste acid solution and waste base solution produced in the process of electrolytic graining and anodizing.

Planographic printing master

Repellent compositions and elements containing the same

A repellent composition containing an oil of low volatility having a surface energy less than 27 dynes/cm. and a solid fluorinated polymer such as a polymer of a fluoroalkyl acrylate. In accord with certain embodiments of the invention, a resinous binder and/or a particulate fluorocarbon powder may be added to the repellent composition. The repellent composition may be used to prepare an ink repellent surface for a "waterless" lithoplate or as a coating on the surface of an electrographic element from which a liquid developed electrographic image is transferred.

Direct drawing type waterless planographic original form plate

A direct drawing type waterless planographic original form plate formed by providing a heat insulating layer, a heat sensitive layer and an ink repelling layer in the mentioned order on a support member, characterized in that the tensile properties of the heat sensitive layer or heat insulating layer, or a layer of a laminate of both of these layers include an initial elastic modulus of 5-100 kgf/mm2 and 5 % stress of 0.05-5 kgf/mm2. This plate is used suitably in the field of a large-sized printing press and an offset rotary press which require a high plate wear, and an economically advantageous plate material is obtained.

Lithographic printing with printing members having primer layers

A primer layer that includes a surface-tension modifier dispersed within a polymer binder is disposed between the imaging layer and the substrate of a lithographic printing member to inhibit the production of thermal degradation products that disrupt the oleophilicity of the exposed imaged areas, thereby improving print-making performance and efficiency. In addition, embodiments of the primer layer inhibit static charge buildup during production and during the print-making process.

Planographic printing master

METHOD OF MANUFACTURING A LITHOGRAPHIC MATRIX

FLAT PRINTING PLATES FOR DIRECT PRINTING PROCESSES, AND METHOD FOR MANUFACTURING THE SAME

Plaque pour l'impression, utilisable dans les procédés d'impression directe à plat et à sec, caractérisée en ce qu'elle comprend : a) un support 1, 2 dont la couche superficielle 2 au moins est un élastomère caoutchouteux présentant une surface oléophile ; et, b) une couche 3, selon un modèle, d'une matière repoussant l'encre, disposée sur la surface oléophile du support formant les zones hors image de la plaque pour l'impression, les zones 4 de l'image étant formées par la surface oléophile du support restée nue dans les zones non munies d'une couche de matière repoussant l'encre. (CF DESSIN DANS BOPI) Plate for printing, usable in the direct flat and dry printing processes, characterized in that it comprises: a) a support 1, 2 of which the surface layer 2 at least is a rubbery elastomer having an oleophilic surface ; and, b) a layer 3, according to a pattern, of an ink repellant material, disposed on the oleophilic surface of the support forming the non-image areas of the plate for printing, the areas 4 of the image being formed by the oleophilic surface of the support which has remained bare in the areas not provided with a layer of material repelling ink. (CF DRAWING IN BOPI)

Patent FR2225292B1

Lithographic substrate and its process of manufacture

Lithographic printing substrate ordinarily require a mechanical or chemical graining of aluminum surfaces. Such substrates are difficult and expensive to make. It has been found that lithographically suitable substrate can be prepared by the firing of monobasic phosphate solutions with or without dispersed particles therein. The presence of reactive metallic oxides enhances the properties of the surface.

Thermal imagable waterless lithographic member

A layered printing plate that attains a high degree of clarity and improved clean out. The printing plate may include an oleophilic substrate, a laser absorbing imaging layer and an oleophobic silicon layer. One embodiment utilizes an amine resin rather than a traditional polymer as the basic organic matter of the imaging layer, adds of colloidal silica into the imaging layer to improve the cleanout properties, and utilizes a substrate that absorbs IR radiation rather than reflects it.

Elastic master for direct lithographic printing

Method for preparing master plate useful for making lithograpic printing plate without need of dampening water

An object of the present invention is to provide a method for manufacturing such a dry lithographic printing master plate that has eliminated uneven plate performance and more specifically that provides a stable adhesiveness between a heat-sensitive layer and a silicone rubber layer as well as a high aging stability of a coating solution. Provided is a method for preparing a master plate useful for making a dry lithographic printing plate comprising at least a heat-sensitive layer and a silicone rubber layer which are stacked in this order on a substrate, said method comprising the steps of: (1) dissolving a diorgano-polysiloxane and a curing catalyst in a solvent; (2) dissolving a cross-linking agent in a solvent; (3) mixing the solution obtained in the step (1) with the solution obtained in the step (2); and (4) applying the mixture obtained in the step (3) over the heat-sensitive layer to thereby form the silicone rubber layer.

MOTHER PLATE FOR FLAT PRESSURE.

Planographic printing plate that does not require fountain solution

Method for preparing dry lithographic plates

A method for preparing a dry PS plate which comprises an aluminum plate as a substrate, wherein the method comprises the steps of degreasing at least one side of she aluminum substrate to which a light-sensitive layer is applied with an aqueous solution of an acid and then applying a light-sensitive layer and an ink-repellent layer to the degreased substrate. The dry PS plate comprising an aluminum plate as a substrate prepared by the method permits the substantial improvement of coating properties of films applied onto the aluminum plate, developability and half-tone dot reproduction as well as storage stability of these properties.

FLAT PRINTING PLATE AND FLAT PRINTING PROCESS

PROCESS FOR PREPARING PRINTING ORIGINALS, NEW PRODUCTS THUS OBTAINED AND PROCESS FOR PRINTING USING THESE ORIGINALS

Photosensitive lithographic printing plate requiring no wetting water

There is disclosed a photosensitive lithographic printing plate requiring no wetting water, which comprises a support, at least a primer layer, a photosensitive layer and a silicone rubber layer provided on the support in this order. The primer layer contains at least (1) a diazo resin and (2) a polymer containing hydroxyl group. The printing plate has excellent durability and ink application property.

Waterless planographic printing plates

Direct printing dry lithographic plate

Lithographic printing members for use with laser-discharge imaging

Image formation

A driographic printing plate precursor comprises a base substrate, an infra-red radiation ablatable ink repellant coating on the substrate, and a transparent cover sheet on the coating. An image is formed on the plate by sequentially exposing areas of the coating to a laser beam to ablate the coating in those areas. The cover sheet and ablation products are then removed.

Reusable printing form

Es wird eine wiederverwendbare Druckform mit einer Druckfläche vorgestellt, welche eine mit wenigstens einer amphiphilen organischen Verbindung, deren polarer Bereich einen säureartigen Charakter hat, behandelte Metalloxidoberfläche, insbesondere eine nativ oxidierte Titanoberfläche, aufweist. In einer vorteilhaften Ausführungsform wird n-Heptadecan-Hydroxamsäure {CH3-(CH2)16-C(O)-NH-OH} und/oder n-Octadecan-Phosphonsäure {CH3-(CH2)17-P(O)-(OH)2} verwendet. Auch wird ein Verfahren zur Bebilderung einer wiederverwendbaren Druckform beschrieben. Die wiederverwendbare Druckform kann für den Offsetdruck eingesetzt werden. A reusable printing form is presented with a printing surface which has a metal oxide surface, in particular a natively oxidized titanium surface, treated with at least one amphiphilic organic compound, the polar region of which has an acid-like character. In an advantageous embodiment, n-heptadecane hydroxamic acid {CH3- (CH2) 16-C (O) -NH-OH} and / or n-octadecane-phosphonic acid {CH3- (CH2) 17-P (O) - (OH ) 2} used. A method for imaging a reusable printing form is also described. The reusable printing form can be used for offset printing.

Dry planographic printing plate

A laminated negative acting presensitized planographic printing plate for use in dry planography having (a) a base layer. (b) a silicone rubber layer overlying the base layer, and (c) a photoadhesive layer overlying the silicone rubber layer comprising at least one photopolymerizable unsaturated compound having a boiling point above 100° C. and a photoinitiator. Under exposure to light through a negative transparency, the photoadhesive layer polymerizes in the exposed image area and adheres to the underlying silicone rubber layer, while remaining non-adhesive to the underlying silicone rubber layer in the unexposed non-image area. The unexposed photoadhesive layer only is removed to bare the underlying silicone rubber layer which is made an ink-repellent non-image area and the photoadhesive layer remaining in the exposed area is made an ink-receptive image area. The surface of the photoadhesive layer accepts ink from inking rollers, while the silicone rubber background area will not remove ink from the rollers and thus remains ink free.

Patent JPS5053110A

Ablation-type lithographic printing members having improved exposure sensitivity and related methods

Dry, ablation-type, nitrocellulose-containing lithographic printing members include dual adjacent imaging layers, both including an absorber and at least one containing a binder (which may include or consist essentially of a melamine resin). The absorber of the nitrocellulose-containing layer is a pigment and this layer contains no absorbing dye, while the absorber of the other imaging layer includes or consists essentially of a dye.

Improvements in the means used to lithograph drawings and writings

Driographic plate

Compositions and solventless process for digital laser imagable lithographic printing plate production

The invention comprises a waterless, multilayered lithographic printing plate imagable by digitally controlled laser ablation. The plate exhibits superior impression life and is produced by solventless methods to yield low VOC. The plate contains a first solid substrate layer; a second infra-red light absorbing polymeric layer containing crosslinked functionality; and a polysiloxane top layer containing crosslinked functionality. At least the second layer and top layer contain interlayer crosslinked bonds. Optionally, the plate may contain a prime polymeric layer interposed between the first and second layer.

Direct drawing-type waterless lithographic printing original plate

The objective is to provide a direct drawing-type waterless lithographic printing original plate which is highly sensitive and is not susceptible to formation of blisters, namely a direct drawing-type waterless lithographic printing original plate which has a wide latitude. Provided is a direct drawing-type waterless lithographic printing original plate which has at least a heat-sensitive layer and a silicone rubber layer on a substrate in this order. The direct drawing-type waterless lithographic printing original plate is characterized in that the heat-sensitive layer contains non-photosensitive particles and the average particle diameter of the non-photosensitive particles is not less than 1/2 of the average film thickness of a portion of the heat-sensitive layer where the non-photosensitive particles are not present.

FLAT PRINT PLATE AND METHOD OF MANUFACTURING IT

Lithographic printing plates for use with laser-discharge imaging apparatus

Lithographic printing plates suitable for imaging by means of laser devices that emit in the near-infrared region. Laser output either ablates one or more plate layers or physically transforms a surface layer, in either case resulting in an imagewise pattern of features on the plate. The image features exhibit an affinity for ink or an ink-abhesive fluid that differs from that of unexposed areas.

Single-coat self-organizing multi-layered printing plate

A single manufacturing pass for manufacturing a multilayered self-organized coating onto a substrate to provide all of the functions usually provided in multiple-pass coatings for manufacturing an infrared imageable offset lithographic printing plate; and a process whereby two or more polymeric materials that cannot usually co-exist in solution may be dissolved in suitably dilute solvent mixtures which, when coated onto a substrate and the solvents evaporated, deposit a continuous graduation of polymeric mixtures vertical to the substrate, caused by the self-assembly process.

Direct drawing type waterless planographic printing plate precursor

Pressure form and method for changing its wetting properties

Preparation method of lithographic printing plate