39results about "Plate printing" patented technology

The invention relates to a method for producing a flexographic printing form from a digitally imageable, photopolymerizable flexographic printing element comprising, arranged one above the other in the aforementioned order, at least one dimensionally stable carrier (A), at least one photopolymerizable, relief-forming layer (B), a UVA-light transparent, oxygen-blocking barrier layer (C), a laser-ablatable mask layer (D), and a peelable cover film (E), wherein the method comprises at least the steps (i) peeling off the cover film (E), (ii) inscribing a mask into the laser-ablatable mask layer (D) using an IR laser, (iii) exposing the imaged flexographic printing element with UVA light through the formed mask, (iv) removing the residues of the laser-ablatable mask layer (D), the barrier layer (C), and the unpolymerized portions of the relief-forming layer (B).and (v) optionally includes post-exposure of the dried flexographic printing plate with UVA and / or UVC light, wherein layers (B), (C) and (D) are soluble or dispersible in an organic solvent, and the barrier layer (C) contains at least an oxygen-blocking binder and an oligomeric or polymeric basic adhesive component, and that at least partial removal according to step (iv) is carried out by heating and removing the unexposed areas using a developing material.

The present invention addresses the problem of providing a flexographic printing plate original plate having improved reproducibility of microcells when made into a flexographic printing plate, and a method for manufacturing a flexographic printing plate using the same. This flexographic printing plate original plate has a support, a photosensitive resin layer, an intermediate layer, and an infrared ablation layer in this order. The photosensitive resin layer contains a base polymer, water-dispersible particles, a photopolymerizable unsaturated compound, and a photopolymerization initiator. The intermediate layer contains a copolymer represented by formula (1).

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 provides a flexographic printing plate in which the dot gain of fine dots in a fade-out part is reduced and printability is improved. A flexographic printing plate obtained from a flexographic printing plate precursor comprising at least a support (A), a photosensitive resin layer (B) and a heat-sensitive mask layer (C) which are laminated in this order, characterized in that, when dots each having a diameter of 16 µm are formed at 175 lpi on the printing plate, the dots do not buckle until a load of 0.2 N is applied thereto. Preferably, when dots each having a diameter of 16 µm are formed at 175 lpi on the printing plate, the shoulder angle of each dot is 105 to 125° and the dot depth is 70 to 85 µm.

The present invention relates to an on-press developing lithographic printing plate precursor, a method for producing a lithographic printing plate using the on-press developing lithographic printing plate precursor, and a lithographic printing method, the on-press developing lithographic printing plate precursor having a support and an image recording layer on the support, the image recording layer contains a polymerizable compound and polymer particles, the median diameter of the polymer particles is 50-120 nm, the content of the polymer particles is 42-90 mass% relative to the total mass of the image recording layer, and after osmium dyeing treatment is performed on the thickness-direction cross section of the lithographic printing plate precursor, the thickness-direction cross section of the lithographic printing plate precursor is greater than the thickness-direction cross section of the lithographic printing plate precursor, and the thickness-direction cross section of the lithographic printing plate precursor is greater than the thickness-direction cross section of the lithographic printing plate precursor. In a cross-sectional image obtained by binarizing a cross-sectional image obtained by scanning electron microscope observation into a dyed section and a non-dyed section, the standard deviation of the area ratio of the non-dyed section is less than 6.

A mask element for flexographic printing is provided. The mask element can be used for preparing a mask that has a mask image. The mask element can include: a transparent polymeric carrier sheet; a barrier layer on the transparent polymeric carrier sheet, wherein the barrier layer comprises non-crosslinked nitrocellulose; and an imaging layer on the barrier layer, wherein the imaging layer includes a non-silver halide thermally-ablatable material comprising non-crosslinked nitrocellulose, carbon black, and an infrared (IR) dye. In some aspects, the mask element further includes a transparent overcoat layer on the imaging layer. The mask can include: imaged regions in the imaging layer, wherein the imaged regions have optical apertures that are substantially devoid of the carbon black and non-crosslinked nitrocellulose thereof; and non-imaged regions in the imaging layer, wherein the non-imaged regions have the non-crosslinked nitrocellulose, carbon black, and infrared dye.

The present invention relates to a mask-printing apparatus for manufacturing film-type edible products. The mask-printing apparatus comprises: a support structure through which an externally supplied printable substrate passes; a substrate guide means which is mounted to the support structure and guides the conveyance of the substrate; a substrate support unit which is installed below a conveyance path of the substrate and supports the substrate when printing edible raw materials on the upper surface of the substrate; a metal mask which is mounted above the substrate support unit so as to be capable of moving up and down, and which is in close contact with the upper surface of the substrate during printing and has a plurality of printing holes through which the edible raw materials pass; and a printing unit which spreads the edible raw materials on the upper surface of the metal mask so that the edible raw materials are printed on the substrate via the printing holes. The mask-printing apparatus for manufacturing film-type edible products according to the present invention as described above can produce edible products of various shapes via a printing method using metal masks, and only ejects edible raw materials in a paste state just before printing, and thus viscosity changes in the raw materials can be minimized since the time of contact between the raw materials and air is short.

The present application provides a support for a lithographic printing plate, a lithographic printing plate precursor, and a method for producing a lithographic printing plate precursor, the support for a lithographic printing plate being capable of obtaining a lithographic printing plate precursor excellent in scratch resistance by being combined with an image recording layer. The support for a lithographic printing plate of the present application is a support for a lithographic printing plate including an aluminum plate and an anodized film of aluminum provided on the aluminum plate, a plurality of convex portions being present on the surface on the side of the anodized film of the support for a lithographic printing plate, the average value of the equivalent circle diameters of the cut surfaces of the convex portions in the positions higher than the position of the average height of the convex portions by 0.5 μm or more being 3.0 to 10.0 μm, and the density of the convex portions having a height higher than the position of the average height of the convex portions by 0.5 μm or more being 3000 to 9000 pieces / mm 2 .

This photosensitive resin composition comprises a thermoplastic elastomer (A), a liquid farnesene rubber (B), an ethylenic unsaturated compound (C), and a photoinitiator (D).

The application relates to the field of screen printing, and provides a printing screen and a preparation method of the printing screen. The printing screen provided by the application comprises a base screen, the base screen comprises steel wire lines; a functional layer is arranged on the surface of the base screen, the material of the functional layer comprises metal and diamond, and the metal comprises at least one of nickel or cobalt. The printing screen provided by the application still has good wear resistance and tension stability during long-term high-speed printing, and has good compatibility with new slurry.

A process for creating a mask for making a printing plate from an unexposed flexographic plate having a masking layer. The process includes providing image information as a first screen having a first plurality of pixels and defining openings in the masking layer in accordance with the image information by superimposing on at least a portion of the image information a base pattern of equally sized spots. Each spot corresponds to an imaged discrete element represented on the mask and has a size corresponding to a smallest discrete element formed on the mask. The spots in the base pattern are aligned in horizontal rows and columns having a non-zero spacing between adjacent rows and columns. In at least a portion of the mask, a size for forming each imaged discrete element is selected such that each set of four neighboring imaged discrete elements has a non-imaged discrete area centered therebetween.

A thermal development apparatus for removing non-crosslinked polymer or monomer from a first surface of a flexographic plate comprises a moving assembly which moves the plate along a predetermined trajectory. A development operating assembly applies an absorbent material to the first surface during movement thereof, and comprises feeding means of the absorbent material and heating means for heating the first surface to a temperature sufficient to melt at least a portion of the non-crosslinked polymer / monomer. A second operating assembly comprises contact means configured to cause a contact between the absorbent material and the first surface to allow the melted polymer / monomer to be absorbed by the absorbent material. A cooling assembly cools the plate at an operating position downstream of the operating position at which the absorbent material contacts the first surface, wherein the operating positions are considered with respect to the predetermined trajectory along which the plate is moved.

An object of the present invention is to provide a flexographic printing plate precursor in which microcell reproducibility is favorable in a case of being made into a flexographic printing plate, and a manufacturing method of a flexographic printing plate using the same. A flexographic printing plate precursor includes, in the following order, a support, a photosensitive resin layer, an interlayer, and an infrared ablation layer, in which the photosensitive resin layer contains a base polymer, water-dispersible particles, a photopolymerizable unsaturated compound, and a photopolymerization initiator, and the interlayer contains a copolymer represented by Formula (1).

The utility model provides a kind of full opening steel plate of partial broken grid can be solved, including mutually stacked first metal layer and second metal layer, multiple printing channels are arranged in parallel on second metal layer, printing channel includes multiple transpore channel spaced apart along extension direction, strengthening area located away from printing notch along thickness direction, transition area located away from printing notch along thickness direction, reservoir area close to printing notch along thickness direction, strengthening area includes multiple transpore hole, connecting bridge being arranged between adjacent two transpore holes, transition area includes first transition hole adjacent with connecting bridge, first transition bridge being arranged on the side of first transition hole away from connecting bridge, the width of first transition hole along perpendicular to printing direction is greater than adjacent transpore hole, first transition bridge is provided with first transition gap along middle part.The utility model's full opening steel plate of partial broken grid can be solved, can make that slurry covers more evenly, and the grid line printed is more level without breakage.

The present invention relates to an imaging printing forme in the form of a cylindrical forme body having a cylindrical metal core and a hard elastomer, wherein the hard elastomer comprises 100 phr of a mixture of styrene-butadiene rubber and ethylene propylene diene rubber, and wherein the hard elastomer covers the outwardly facing surface of the metal core, and wherein the hard elastomer has a material hardness of at least 70 Shore D measured according to DIN EN ISO 868. A printing forme of this type is distinguished, in particular, by its dimensional stability in polar organic solvents, and is therefore suitable for use with solvent-based inks.

A method for manufacturing a printing plate includes: a lamination process in which a negative film (1) having a micro-unit pattern, a liquid photosensitive resin composition layer (2), a support (3), and a second rigid plate (12) located above are sequentially laminated on a first rigid plate (11) located below; and an exposure process in which active light is irradiated from the first rigid plate (11) and the second rigid plate (12) to cure the photosensitive resin composition layer (2). In the lamination process, the photosensitive resin composition layer (2) is directly laminated on the negative film (1), and the solubility parameter SpA of the photosensitive resin composition constituting the photosensitive resin composition layer (2) and the solubility parameter SpB of the negative film have the following relationship (I): |SpA-SpB|≥2.0 …(I).

To provide a gravure printing plate capable of suppressing threadlike paste from protruding beyond a printing area.SOLUTION: A gravure printing plate 12 is a cylindrical or columnar printing plate for printing paste onto a ceramic green sheet, and includes a circumferential surface on which one or more printing patterns are provided. Each of the one or more printing patterns comprises a plurality of recesses 42 arranged and partitioned by bank portions 41. The outer edge of a printing pattern 121 has a rectangular shape with first corner portions 121c rounded at the four corners.SELECTED DRAWING: Figure 3

A multilayer body which is obtained by stacking a slip sheet and a planographic printing original plate having an image recording layer that contains an infrared absorbent, a polymerizable compound and a polymerization initiator, wherein the air resistance of the slip sheet is 55 seconds or more. Alternatively, a multilayer body which is obtained by stacking a slip sheet and a planographic printing original plate having an image recording layer that contains an infrared absorbent, a polymerizable compound and a polymerization initiator, wherein: the planographic printing original plate and the slip sheet are superposed upon each other such that the image recording layer-side surface of the planographic printing original plate is in contact with the slip sheet; and the color difference ∆E of the image recording layer between before and after storage for three days in a dark room at 25°C and 55% RH is less than 3.0.

A foil 20 for a printing screen comprising graphene. The foil may comprise a sheet 14 of doped or undoped graphene. The graphene may be at least partially in the form of carbon nanotubes. The graphene

The present invention provides a lithographic printing plate master that exhibits excellent transfer suppression of the image recording layer and good developability of the non-image areas, and a method for producing a lithographic printing plate using a lithographic printing plate master. [Solution] A lithographic printing plate and its application, comprising a support and an image recording layer on the support, wherein the image recording layer comprises a polymer A having a main chain containing two or more silicon atoms and a hydrophilic group.

A printing screen for SMT applications at least partially comprising graphene, optionally in the form of carbon nanotubes.

Provided are a washout processor and a method for manufacturing a flexographic printing plate precursor, which have good productivity and work efficiency. A washout processor that develops a flexographic printing plate precursor after imagewise exposure using a developer includes a station for attaching the flexographic printing plate precursor, and a measurement unit that measures at least one of a size or a thickness of the flexographic printing plate precursor and a position of the flexographic printing plate precursor on the station.

The present invention relates to a hard elastomer comprising at least one rubber, at least one filler, at least one resin and 5 to 50 phr sulphur, wherein the hard elastomer has a material hardness of at least 70 Shore D measured in accordance with DIN EN ISO 868. A hard elastomer of this kind is characterised in particular by its material homogeneity and is extremely well suited for use as an image-providing printing forme.

Disclosed are a printing mesh and a method for making a screen printing plate. The printing mesh includes a screen and a removable material that can be removed under the action of electromagnetic energy, where the screen can be completely or partially retained under the action of the electromagnetic energy. The screen has mesh openings filled with the removable material. The removable material covers a surface of the screen to form a removable layer. During plate making, the electromagnetic energy can be directly applied to a predetermined area of the printing mesh to remove the removable material in the area, so that a required pattern can be directly formed on the printing mesh to complete the plate making. Therefore, the plate making for the printing mesh is simpler and more convenient, with an uncomplicated plate-making process, making it particularly suitable for individual plate-making operations.

The application discloses a high-performance high-strength screen manufacturing process and relates to the technical field of screen printing screen manufacturing. The process comprises the following steps: providing a steel wire mesh cloth after being treated by pressing; attaching a protective film to the surface of the steel wire mesh cloth and performing hot pressing; performing scanning and identification on the steel wire mesh cloth after the film is attached, positioning the pressing point position, and generating a processing drawing containing a protection area and a refinement area; removing the protective film of the refinement area by laser cutting according to the processing drawing; performing differential refinement treatment on the steel wire mesh cloth after laser windowing, corroding the exposed refined area steel wire, and protecting the steel wire in the protection area from corrosion due to the protection of the protective film; removing the protective film to obtain a finished product screen. Through selective protection of the protective film and precise laser windowing, differential refinement treatment of the pressing point area and the non-pressing point area is realized, the strength of the steel wire at the pressing point is effectively protected, the service life of the screen is prolonged by more than 50%, the uniformity of the thickness of the screen cloth is significantly improved, and the process is suitable for high-precision screen printing scenes.

Printing plate (1) for transferring a printing ink (2) to a rubber blanket (3) for printing on an object surface (4), the printing plate (1) having a plurality of elevations (5) which, starting from a base surface (6) of the printing plate (1), extend in a direction (7) orthogonal to the base surface (6), each elevation (5) having a printing surface (8) to which the printing ink (2) can be applied, with which the printing plate (1) contacts the rubber blanket (3) for transferring the printing ink (2), wherein at least one of the printing surfaces (8) comprises a first region (9) with a flat surface (10) and at least one second region (11) with a concave surface (10), wherein the first region (9) completely encloses the at least one second region (11).Printing system (19) and method for printing an object (20).

Provided are a machine-developable lithographic printing plate precursor, and a method for producing a lithographic printing plate or a lithographic printing method using the machine-developable lithographic printing plate precursor. The machine-developable lithographic printing plate precursor has, in order, a support, an image-recording layer, and an outermost layer. The outermost layer has an island-in-sea structure including a discontinuous phase containing a hydrophobic polymer and a continuous phase containing a water-soluble polymer.

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.