134results about "Printing pre-treatment" patented technology

IR-sensitive lithographic printing plate precursors provide a stable print-out image using a unique IR radiation-sensitive composition in an infrared radiation-sensitive image-recording layer. This IR radiation-sensitive composition includes: (1) a free radical initiator composition that comprises an electron-donating agent; (2) a free radically polymerizable composition; and (3) a color-changing compound that is represented by the Structure (I) having a conjugated carbon chain between the aromatic terminal groups. The compound also has a —SO2—R3 group wherein R3 represents alkyl, aryl or heteroaryl groups. After IR imaging, these precursors exhibit desirable printout images both fresh and after dark storage. The precursors can be developed off-press or on-press.

The invention relates to the technical field of screen printing plates, in particular to a surface coating structure and process for prolonging the service life of a screen printing plate, and the surface coating structure comprises a screen frame, a metal net is arranged in the screen frame, a pattern area right opposite to a battery piece is arranged on the metal net, and a plurality of pattern openings used for printing electrode grid lines on the battery piece are formed in the pattern area. The pattern area comprises a long edge and a wide edge, the direction of the long edge of the pattern area is parallel to the moving direction of the scraper, the metal net comprises a P surface facing the battery piece and an S surface opposite to the battery piece, the P surface is covered with a printing PI film, the S surface is covered with a reinforcing PI film, and the reinforcing PI film is provided with a notch structure used for exposing a pattern opening. And a layer of reinforced PI film is additionally arranged on the S surface to wrap and protect the metal net, and when the metal net is extruded by the scraper, the reinforced PI film can share most pressure, so that the metal net is protected, and the overall service life is prolonged. And the gap structure ensures that the silver paste can normally penetrate through the pattern area for silk-screen printing.

The present invention discloses an environmentally friendly water tank fountain solution and a preparation method thereof, relating to the technical field of fountain solution preparation. The fountain solution comprises, by mass percentage, 3% to 10% ethylene glycol monobutyl ether, 0.5% to 3% ethylene glycol tert-butyl ether, 0.8% to 5% 1,2-propylene glycol, 0.1% to 0.5% sodium citrate, 10% to 91% purified water, and 0.1% to 0.5% defoaming agent. The environmentally friendly water tank fountain solution of the present invention has simple components, high stability, and is environmentally friendly. It also has the characteristics of low surface tension, good wettability, good antibacterial properties, and zero alcohol, thereby ensuring printing effects and printing quality.

A system for moving a flexible plate, in particular a printing plate or a printing plate precursor, over a support surface in the direction of a treatment station, such as a washer station. The system includes a support configured for supporting the plate on a support surface thereof, and intended to be located upstream of the treatment station. A movement means includes a plate engagement means configured to contact the plate in such a way that the plate is engaged by adhesion or by friction or a combination thereof, in a movement mode, and that the plate can be slid over the support surface by controlling the movement means in the movement mode. A control means is configured to control the movement means such that the plate is slid over the support in the direction of the treatment station.

System for moving a flexible sheet (P), in particular a printing sheet or a printing sheet precursor, on a support surface in the direction of a treatment station (S2), such as a washing station, said system comprising: a support body (100) configured to support a sheet on its support surface and intended to be located upstream of said treatment station; a moving device (200) comprising sheet engagement means (250) configured to come into contact with a sheet in such a way as to engage with said sheet by adhesion or friction or a combination thereof in a moving mode and in which, by controlling said moving device (200), said sheet can slide on said support surface; a control device configured to control said moving device so as to cause said sheet to slide on said support body in the direction of said treatment station.

A method and apparatus for processing a lithographic printing plat comprising development with an alkaline solution and gumming with first gum solution and subsequently with a second gum solution, wherein both gum solutions are provided in a cascade configuration whereby the second gum solution overflows into the first gum solution.

An apparatus (1000) for treating a relief plate precursor, such as a printing plate precursor (P), preferably with a liquid, comprising: a transport system (210, 220, 230) with at least one, preferably at least two transport bars (100); a plate coupling station (300) configured for coupling a relief plate precursor to the transport bar; a treatment compartment (400) configured for treating the relief plate precursor; a plate decoupling station (500) configured for decoupling the treated relief plate precursor from the transport bar; wherein the transport system is configured to automatically move each transport bar, after being coupled to a relief plate precursor in the plate coupling station, from the plate coupling station through the treatment station to the plate decoupling station, and, after being decoupled from a treated relief plate precursor, from the plate decoupling station back to the plate coupling station, such that the transport bar moves in a closed loop through the apparatus.

A lithographic printing plate precursor has an aluminum substrate prepared using two anodization processes to provide an inner aluminum oxide layer having an average dry thickness of 300-3,000 nm and having a plurality of inner micropores having an average inner micropore diameter of <100 nm. An outer aluminum oxide layer is provided with a plurality of outer micropores having an average outer micropore diameter of 15-30 nm and a dry thickness of 30-650 nm. A hydrophilic layer is provided on the outer aluminum oxide layer having (1) a compound having an ethylenically unsaturated polymerizable group, an -OM group directly attached to a phosphorus atom, wherein M represents a hydrogen, sodium, potassium, or aluminum atom; and (2) one or more hydrophilic polymers having (a) a repeating unit comprising an amide group, and (b) a repeating unit having an -OM' group directly attached to a phosphorus atom, wherein M' represents a hydrogen, sodium, potassium, or aluminum atom. 2 An outer aluminum oxide layer is provided with a plurality of outer micropores having an average outer micropore diameter of 15-30 nm and a dry thickness of 30-650 nm. A hydrophilic layer is provided on the outer aluminum oxide layer having (1) a compound having an ethylenically unsaturated polymerizable group, an -OM group directly attached to a phosphorus atom, wherein M represents a hydrogen, sodium, potassium, or aluminum atom; and (2) one or more hydrophilic polymers having (a) a repeating unit comprising an amide group, and (b) a repeating unit having an -OM' group directly attached to a phosphorus atom, wherein M' represents a hydrogen, sodium, potassium, or aluminum atom.

A method and apparatus are provided for drying a flexographic plate previously subjected to washing with a water-based or solvent-based liquid. The method involves providing a support member made of a thermo-conductive material, wherein the support member comprises at least a first main surface adapted to allow the support of the plate to be dried. The method involves positioning the plate to be dried on the support element so that a base face of the plate rests on the first main surface. The method further provides the step of heating the support element to a preestablished temperature so that the thermal energy supplied to the support element is transferred by conduction to the plate resting on the support element so as to cause evaporation of residual liquid contained in the plate. The apparatus is provided for carrying out the drying method.

The invention discloses a hard-water-resistant alcohol-free fountain solution and a preparation method thereof. The formula of the fountain solution comprises PVA-g-AA copolymer water-soluble resin, a pH buffering agent, a polyhydric alcohol wetting agent, an alcohol ether wetting agent, a surfactant, an antibacterial agent, other additives and deionized water. The preparation method comprises the following steps: 1, synthesizing PVA-g-AA copolymer water-soluble resin; 2, preparing raw materials; step 3, premixing the raw materials; step 4, adding a functional auxiliary agent; according to the formula, PVA-g-AA copolymer water-soluble resin is adopted, the molecular weight and proportion of the resin are regulated and controlled by introducing an acrylic acid component, and the problem that the spreading rate of a water film is decreased due to winding of a resin molecular chain is solved; the water-soluble resin is compounded with a pH buffering agent, so that precipitation of hard water is inhibited, and long-acting pH stability is realized; in addition, the water-soluble resin can be in synergistic effect with the surfactant, so that stable control on the emulsification rate of the printing ink is realized.

A method for imaging a mask layer, comprising the steps of: providing a mask layer; receiving an image file including imaging pixels and non-imaging pixels at a first resolution R1; generating a modified image file based on the image file, the modified image file including low-resolution imaging pixels and low-resolution non-imaging pixels at a second resolution R2 lower than the first resolution R1, wherein a second pitch P2 corresponds to the second resolution R2; imaging the mask layer based on the modified image file such that the imaged spots have a maximum dimension smaller than (√2*P2), preferably smaller than P2.

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

A device for aligning an edge, typically a leading edge of a plate, in particular a leading edge of a printing plate or a printing plate precursor, the device comprising: a support (100) configured for supporting a plate on a support surface and intended to be located upstream of a processing station; at least two movable elements (501, 502) arranged to be moved by an edge of a plate, typically a leading edge of a plate, the at least two movable elements comprising a first movable element and a second movable element; detection means (601, 602) configured to detect a first measurement representative of a first position of the first movable element and a second measurement representative of a second position of the second movable element, respectively; at least one controllable component (100, 250) configured to perform an action on a plate; and control means (700) configured to control the at least one controllable component based on the first measurement and the second measurement.

An apparatus (1000) for preparing a relief plate precursor, such as a printing plate precursor (P), that has to be treated, comprising: a transport bar (100) provided with at least one penetration element (110), preferably a plurality of penetration elements; a plate coupling station (300) configured for coupling a relief plate precursor to the transport bar by causing a penetration by the at least one penetration element through an un perforated area near an edge of a relief plate precursor.

This invention relates to the field of nanoprinting plate technology, and more particularly to a coating material for nanoprinting plates and its preparation method. The preparation method includes: feeding nanoparticles, film-forming resin, curing agent, dispersant, solvent, and dye into a high-speed disperser for pre-dispersion to form a first dispersion; obtaining the vibration value of the sleeve at the temperature sensor probe during the pre-dispersion process and determining the maximum and minimum speeds of the high-speed disperser; obtaining the drive current deviation value of the motor of the high-speed disperser and determining the reverse rotation time of the motor; grinding the dispersion to be ground, and calculating the hardness of the residual hard agglomerates based on the drive current deviation value and determining the outlet back pressure of the feed pump of the sand mill; completing the grinding process according to the outlet back pressure to obtain a grinding slurry; adding a leveling agent to the grinding slurry to obtain the finished coating material for nanoprinting plates. This invention improves the film-forming performance of the finished coating material for nanoprinting plates.

The present application provides a plate roller and its repairing method, relates to the field of printing technology, and solves the technical problems that the patterns, characters and the like on the plate roller are prone to wear and tear and the printing cost is high. The repairing method of the plate roller comprises the following steps: digging a pin hole at the position of the damaged characters or patterns on the plate roller, removing the damaged characters or patterns; inlaying a pin block in the pin hole; milling a to-be-engraved surface on the pin block, so that the to-be-engraved surface is coplanar with the surface on which the remaining characters on the plate roller are located; and re-engraving effective characters or patterns on the pin block. When the patterns, characters and the like on the plate roller are worn or damaged, the above repairing method is used to remove the part where the damaged characters or patterns are located, and the pin block is embedded to re-engrave the characters or patterns. Only the part where the damaged characters or patterns are located is removed and replaced, so that the repairing of the plate roller can be realized, the whole plate roller does not need to be replaced, the service life of the plate roller is prolonged, and the printing cost is reduced.

A lithographic printing plate precursor including a support and an image-recording layer on the support, in which the image-recording layer contains a polymer A having a main chain containing two or more silicon atoms, and a hydrophilic group.

The present invention addresses the problem of providing a positive lithographic printing plate precursor and a method for producing a lithographic printing plate, said positive lithographic printing plate precursor having good development discrimination and having good brush resistance and image portion scratch resistance. The present invention provides a positive lithographic printing plate precursor and a method for making a lithographic printing plate using the positive lithographic printing plate precursor. The positive lithographic printing plate precursor comprises: a support; and an image recording layer formed from a positive photosensitive resin composition on the support. The positive photosensitive resin composition contains: a compound having at least one electron withdrawing group and at least one phenolic hydroxyl group in one molecule; an alkali soluble resin; and an infrared absorbent, wherein the electron withdrawing group does not include a sulfonyl group.

The invention relates to the technical field of lithographic printing plate materials, and particularly discloses an anti-sticking on-machine developing negative image thermosensitive CTP plate material and a preparation method thereof, the anti-sticking on-machine developing negative image thermosensitive CTP plate material is composed of an aluminum-based substrate, a photosensitive layer and a wool treatment liquid; the rough surface treating fluid comprises the following components: nano silicon dioxide particles, an inorganic stabilizer, an organic binder and the balance of deionized water or ethanol; the formed double-layer photosensitive layer is strong in hydrophilicity and good in photosensitive stability, the nano silicon dioxide added in the rough surface treatment liquid can be stabilized by controlling the proportion content of different particle sizes, the inorganic stabilizer can be used for stabilizing the nano silicon dioxide, and the organic binder can be used for promoting the nano silicon dioxide to be dispersed and stably combined with the photosensitive layer; the Ra value of the formed CTP plate subjected to rough surface treatment is 0.8-2.5 microns, the bonding strength with lining paper is reduced by 60% or above, the plate preparation method has process compatibility, the performance of a photosensitive layer is not affected, the plate has storage stability, and the adhesion phenomenon is not observed when the plate is stored for 6 months under the high-humidity condition.

The present invention provides an original plate for a planographic printing plate that has excellent oil-based cleaner printing resistance when used as a planographic printing plate, a method for manufacturing a planographic printing plate, a printing method, and a method for manufacturing an aluminum support. This original plate for a planographic printing plate has an aluminum support and an image recording layer disposed over the aluminum support, the aluminum support including an aluminum plate and an aluminum anodic oxide film disposed on the aluminum plate, the image recording layer being disposed on the anodic oxide film side of the aluminum support, and the area ratio of protrusions having a height from the average surface of 0.80 μm or greater, found by measuring a 400×400 μm range of the surface of the image recording layer side of the aluminum support using a non-contact three-dimensional roughness meter, being 20% or less.

The utility model relates to the technical field of printing plate cylinders, in particular to a ventilated oil passing plate cylinder which comprises an outer pipe body, an inner pipe body and a shaft body are arranged in the outer pipe body respectively, and the left side and the right side of the outer pipe body are connected with a left insert and a right insert respectively. One side of the left insert extends into one side of the outer pipe body and is in interference fit with the outer pipe body, a left bearing is further connected between the other side of the left insert and the gear, a right bearing is connected to the side, located on the right flange, of the right insert, and the right insert is in interference fit with the right bearing. An air inlet hole and an air outlet hole are respectively formed in the outer surface of the outer pipe body; according to the oil-passing plate cylinder structure, the inner pipe body structure is additionally arranged on the basis of an existing structure, the inner pipe body and other parts of the printing plate cylinder jointly form a closed air cavity, the rubber sleeve can be expanded, abrasion is reduced, the rubber sleeve can be better installed, the durability of the whole oil-passing plate cylinder structure is improved, and the service life of the whole oil-passing plate cylinder structure is prolonged.

An object of the present invention is to provide an on-press development-type planographic printing plate precursor which suppresses color-forming defect after a lapse of time and has excellent visibility. Another object of the present invention is to provide a manufacturing method of a planographic printing plate and a printing method. The planographic printing plate precursor of the present invention is an on-press development-type planographic printing plate precursor including a support and an image-recording layer, in which the support has an aluminum alloy plate and an anodic oxide film disposed on the aluminum alloy plate, a density of intermetallic compounds having a major axis of 2.0 µm or more on a surface of the support on a side opposite to the image-recording layer is 1,000 pieces / mm2 or less, the image-recording layer contains an infrared absorber and an acid color-forming agent, and a color-forming factor of the acid color-forming agent, which is determined by a predetermined measuring method, is 20,000 or more.

The present invention provides a water-developable laminate for producing a flexographic printing original plate, which is a laminate in which a functional resin layer including a photosensitive resin layer having strong surface adhesion is separately provided, and which allows the cover film to be properly peeled off from the photosensitive resin layer even when stored in an environment with large changes in temperature and humidity.The water-developable laminate for producing a flexographic printing original plate, which is formed by laminating a base film, a photosensitive resin layer, and a cover film in this order, is characterized in that a release layer is provided between the photosensitive resin layer and the cover film in contact with both, and that the release layer contains an addition type silicone polymer and a curing catalyst.

Provided is a gravure printing plate which is used in a paste used in printing an electronic component and which has improved transferability. A gravure printing plate (10) for printing a paste used in an electronic component is provided with: a base material (11) having a cylindrical shape or a cylindrical shape, the outer peripheral surface (11a) of which is provided with a printing pattern comprising a plurality of banks (101) and a plurality of recesses (105) partitioned by the plurality of banks (101); and a first coating layer (13) provided on the inner surfaces of the plurality of recesses (105). In a gravure printing plate (10), a first coating layer (13) contains fluorine.

An apparatus for aligning an edge, such as a leading edge of a plate, in particular a printing plate or a printing plate precursor. The apparatus includes a support configured for supporting the plate on a support surface, and to be located upstream of a treatment station. At least two movable elements are arranged to be moved by an edge, such as a leading edge, of the plate. The at least two movable elements include a first and a second movable element; a detection means configured to detect a first and second measure representative for a first and second position of the first and second movable element, respectively, at least one controllable component configured to perform an action on the plate, and a control means configured to control the at least one controllable component based on the first and second measure.

According to the flexible resin plate provided by the invention, by reducing pigments or dyes in the photosensitive resin layer, adding pigments or dyes in the bonding layer and controlling color distribution in the plate material, a flexible printing plate with feature recognition colors can be easily obtained, meanwhile, the reduction condition of fine lattice points on the plate material is improved, the dark line depth is increased, and the printing quality is improved. The flexographic plate material with higher precision can be obtained, and in addition, the flexographic plate material has better binding power.

The present invention provides an on-press development type lithographic printing plate precursor and a method for manufacturing a printing plate, the on-press development type lithographic printing plate precursor having an image recording layer on a support, the image recording layer contains a chromophoric compound having a group that cleaves by infrared exposure, a polymerization initiator, a polymerizable compound, and a hydrogen-donating compound, and the hydrogen-donating compound is a compound different from the polymerization initiator, the polymerizable compound, the chromophoric compound, and the acid-cleaving compound. And a compound having a molecular weight of less than 3,000 and having at least one group selected from the group consisting of-OH,-NH-,-SO2-NH-,-SO2-OH,-CO-NH-, and-CO-OH in the molecule.

The invention relates to the technical field of screen printing plates, in particular to a film coating screen printing plate long in service life, which comprises a screen frame, a metal net is arranged in the screen frame, a pattern area opposite to a battery piece is arranged on the metal net, the metal net comprises a P surface facing the battery piece and an S surface opposite to the battery piece, the P surface is covered with a printing PI film, and the S surface is covered with a reinforced PI film. The reinforced PI film comprises a reinforced area right opposite to the S face and a connecting area right opposite to the screen frame, a notch structure used for exposing a pattern opening is formed in the reinforced area, and a plurality of deformation grooves are evenly formed in the connecting area. And when the metal net is extruded by the scraper, the reinforced PI film can share most pressure, so that the metal net is protected, and the overall service life is prolonged. When the reinforced PI film is extruded by the scraper to deform, the deformation groove deforms along with the deformation to provide a deformation space for the deformation of the reinforced PI film to release stress, so that the toughness of the reinforced PI film is improved, and the service life of the reinforced PI film is prolonged.

The invention relates to a preparation method and application of a transfer printing mold for replacing a texture-free composite board, a glass substrate is used as a transfer printing base film, a layer of auxiliary film-forming agent is coated on the surface of the transfer printing base film in the transfer printing molding process, and a high-performance adhesive is combined to prepare the transfer printing mold which is not easy to pollute. All defects can be repaired before a mold is manufactured, in the production process of manufacturing the mold, dirt can be cleaned, dust spots are not prone to causing the defects due to the fact that the material is hard, the dust spots, broken filaments and other foreign matter fall on the mold and can be directly taken away by a product subjected to glue transfer printing after one-time transfer printing, and the risk of batch defects is greatly reduced; the die has obvious advantages in the aspects of manufacturing, use and maintenance and the risk of causing bad products.