178 results about "Letterpress printing" patented technology

A curved surface printing method comprises a step of applying a printing ink to a raised portion of a letterpress printing original plate which is a planographic plate the raised portion of which is 0.1 to 50 μm high, a step in which an elastic blanket (2) of rubber or rubberish material having a curved surface (221, 222, 21) of a predetermined shape formed on a convex or concave surface of an object (1) to be printed and set in the same polarity direction as that of the convex or concave surface of the object (1) is pressed to the letterpress printing original plate placed in a fixed position and coated with the printing ink, and the printing ink is transferred to the curved surface (221, 222, 21) of the predetermined shape, and a step of moving the elastic blanket (2) to which the printing ink is transferred and which has curved surface (221, 222, 21) of the predetermined shape, bringing the elastic blanket (2) into contact with the curved surface of the object (1), and thus printing the object. A curved surface body printed by this method is also disclosed.

Soybean oil base offset printing ink and bonding material comprises bonding material A, auxiliary bonding material B and auxiliary bonding material C. The invention replaces most part or total petroleum mineral oil in printing ink with soybean oil, belonging to environment-friendly printing ink bonding material without significant petroleum components. The printing ink solves the technical problem that harmful contamination in the air and the surface of printing which is caused by large amount of petroleum solvent comprised in current common letterpress printing ink can further dangers the health of producers and users, has the advantages of environment-friendly, safety, extensive application range, excellent printability and prominent materialization index.

The invention relates to soybean oil base silk screen printing ink, which is formed by bonding material A, auxiliary bonding material B and auxiliary bonding material C, which have different effects. Printing ink proportion can be randomly regulated when in use, the auxiliary bonding material B and auxiliary bonding material C can be used to regulate ink property, and silk screen printing ink which meets the requirements can be produced through singly adding or adding by mixing in bonding material according to different printers. The printing ink replaces petroleum solvent with soybean oil, solves the technical problem that harmful contamination in the air and the surface of printing which is caused by large amount of petroleum solvent comprised in current common letterpress printing ink can further dangers the health of producers and users, and has the advantages of anti-counterfeiting, environment-friendly, excellent printability, extensive application range and prominent materialization index.

The invention discloses letterpress-printing dark red ink. The letterpress-printing dark red ink comprises the following components in parts by weight: 4.5-6 parts of pigment permanent red, 3-5 parts of ever-bright fast red BBN, 4-5 parts of 107 molybdate red, 10-60 parts of polyamide resin liquor, 7.6-8.4 parts of nitro-cotton liquor, 8-10 parts of alcohol, 0.5-0.8 part of polyethylene microcrystalline wax and 1.8-2.8 parts of dispersing dustproof agent. According to the letterpress-printing dark red ink and the preparation method thereof, the ink is colorful in color and luster, high in glossiness, capable of being completely dried within one second, excellent in rheological behavior and convenient for a printer to grasp and operate.

A curved surface printing method comprises a step of applying a printing ink to a raised portion of a letterpress printing original plate which is a planographic plate the raised portion of which is 0.1 to 50 mum high, a step in which an elastic blanket (2) of rubber or rubberish material having a curved surface (221, 222, 21) of a predetermined shape formed on a convex or concave surface of an object (1) to be printed and set in the same polarity direction as that of the convex or concave surface of the object (1) is pressed to the letterpress printing original plate placed in a fixed position and coated with the printing ink, and the printing ink is transferred to the curved surface (221, 222, 21) of the predetermined shape, and a step of moving the elastic blanket (2) to which the printing ink is transferred and which has curved surface (221, 222, 21) of the predetermined shape, bringing the elastic blanket (2) into contact with the curved surface of the object (1), and thus printing the object. A curved surface body printed by this method is also disclosed.

The invention discloses an imprinting and large-piece product quality inspection combination machine, which is characterized in that: an original paper feeding part (1) and an original imprinting part (2) of an original multifunctional imprinter are adopted, and watermark quality is examined by a fluoroscopic inspection device (12) after the watermark is completed; a product is returned to a front-surface inspection device (4) so as to examine the front surface of the product; then the product is conveyed to a back-surface inspection device (8) so as to examine the back surface of the product; and finally the product is conveyed to a paper collecting chain (9), so that the final quality of the large-piece product is comprehensively judged by an inspection system, and the product is respectively sent into a main paper collection cabin (10) or an auxiliary paper collection cabin (11) according to the judgment result. The present watermark procedure and the final quality inspection procedure of the large-piece product are integrated into a whole by the combination machine, so the production process can be simplified, the production field and the labor cost can be saved, the product flow process of the product can be shortened, the present large-piece product inspection procedure can also be shortened, the restraining of the previous procedure and the next procedure can be reduced, the production efficiency can be improved, the information transmission flow can be shortened, and the inspection process is simple and stable.

The production process of corrugated box sheet includes th technological steps of: preprinting of rolled paper, rolling corrugated paper, adhering and stoving, longitudinal cutting and transverse cutting to form box sheet. The said technological process is superior to available process and has high production efficiency, high paper utilization, high corrugation strength and beautiful corrugated box product.

Soybean oil base gravure printing ink and bonding material comprises bonding material A with high washing property and bonding material B with high materialization resistant property. The invention replaces partial petroleum solvent in petroleum base printing ink, belonging to environment-friendly printing ink bonding material. The printing ink solves the technical problem that harmful contamination in the air and the surface of printing which is caused by large amount of petroleum solvent comprised in current common letterpress printing ink can further dangers the health of producers and users, has the advantages of environment-friendly, safety, excellent printability and set ability, and can meet special printings such as money bonds, and value added tax invoices and the like.

To provide a photosensitive resin composition which is a material for a printing original plate for laser engraving which generates no printing deficiencies and from which a printing plate with a satisfactory resolution can be produced. A printing original plate for laser engraving where image is formed by irradiation of laser beam to form a printing plate, characterized in that the photosensitive resin composition layer consists of a photosensitive resin composition in which soluble polyamide or soluble polyether urethane urea, ethylenic unsaturated monomer and photopolymerization initiator are essential ingredients and the amount of (meth)acryloyl group in the photosensitive resin composition is 0.25 to 0.40 mol per 100 g of the photosensitive resin composition.

The invention provides an anti-counterfeiting ink containing electrophoresis microcapsule, and the ink contains 10-90% of electrophoresis microcapsule based on the total weight of the ink. The anti-counterfeiting ink is screen printing ink, gravure ink, litho printing ink, letterpress printing or the like. The anti-counterfeiting ink is used for printing characteristic information on articles which need anti-counterfeiting authentication; after electric field is applied, color change effect is generated on the impress of the anti-counterfeiting ink and can be maintained for a period of time; after reversed electric field is applied, the color of the impress is recovered immediately; after the reversed electric field is continuously applied for a period of time, the color of the impress is changed again and is different from the initial color. By utilizing the change of the specific color, the anti-counterfeiting ink can be used for identifying the authenticity of a print product; and the phenomenon can be identified by a simple instrument by the people, and the testing method is safe. The invention also provides the print product which is printed by the anti-counterfeiting ink and has the anti-counterfeiting identification characteristic.

A letterpress printing machine is disclosed including a rotary printing cylinder in which a relief printing plate is installed, a substrate surface plate on which a substrate is placed, an ink supply device supplying ink on the relief printing plate, a relief printing plate washing equipment washing the surface of the relief printing plate, and a wiper for a plate. The relief printing plate washing equipment can include a washing liquid supplying unit, an air blasting unit jetting pressurized gas to the relief printing plate, a suction unit sucking the washing liquid scattered by air blasting unit, and a washing liquid recovery unit.

A computerized printer utilizes a color separation and printing process that adds brightness, saturation and ink density to traditional CMYK printing processes and optionally eliminates the need for Black (K) color separation data and Black ink in the printer. The process includes the creation of Red, Green, and Blue (R′G′B′) color separation data channels for use by a computer processor to complement the dynamic range of traditional Cyan, Magenta, and Yellow (CMY) color separation data channels. Accordingly, the process gives printers the capacity to utilize a six-color separation process with Cyan, Magenta, Yellow, Red, Green, and Blue (CMYR′G′B′) color separation data channels. The standard Black (K) separation data can be combined within the R′G′B′ separation data to optically simulate Black ink in print. The process can be applied to printing processes including: digital, flexography, inkjet, lithography, rotary gravure, rotary letterpress and screen-printing.

The present invention provides a conductive ink for forming a fine conductive pattern on a substrate by letterpress reverse printing. In particular, the conductive ink enables the pattern to be formed stably without the occurrence of transfer failures and is able to impart superior conductivity by low-temperature baking. The conductive ink, which contains substantially no binder component, comprises as essential components thereof conductive particles having a volume average particle diameter (Mv) of 10 to 700 nm, a release agent, a surface energy regulator and a solvent component, the solvent component being a mixture of a solvent having a surface energy at 25° C. of 27 mN/m or more (high surface energy solvent) and a volatile solvent having a boiling point at atmospheric pressure of 120° C. or lower (low boiling point solvent), and the surface energy of the ink at 25° C. is 10 to 21 mN/m.

The invention relates to a method for identifying a seal and print formation mode based on microscopic trace point characteristics and belongs to the technical field of document examination. The method mainly comprises the following steps: (1) carrying out macroscopic examination on seal and print based on objective facts and living knowledge; and (2) deeply analyzing the seal and print by utilizing the microscopic trace point characteristics, wherein the microscopic trace point characteristics includes ink mark characteristics, ink point characteristics and dot characteristics; the seal and non-plate-making printing print are identified by adopting the ink mark characteristics and the ink point characteristics, and the plate-making printing print is identified by adopting the dot characteristics; and when no dot characteristic exists, whether the seal and print are sealed or printed in a non-plate-making way or formed by a woodblock and a metal plate in letterpress printing is judged, and when the dot characteristic exists, whether the seal and print are formed by the plate-making printing print is judged. The method provided by the invention has the beneficial effects that print production method identification utilizing the trace point characteristics is high in examination accuracy and convenient in operation and thus is a nondestructive and fast identification method.

The invention relates to a preparation method of an electroluminescent anti-counterfeiting trademark structure. The method includes the steps that electroluminescent nano-particles are dispersed in amixed solvent of water, ethylene glycol and a polymer through ultrasonic or mechanical stirring so as to be prepared into printing ink for printing an electroluminescent layer; then, a first conductive ink layer, an electroluminescent layer and a second conductive ink layer are printed on release paper layer by layer through the silk-screen printing technology or the letterpress printing technology to form the electroluminescent anti-counterfeiting trademark structure; the prepared electroluminescent anti-counterfeiting trademark structure is detected through a detector with a commercial button cell as a power source, and an electroluminescent anti-counterfeiting trademark is stimulated through physical contact to emit light and serve as the anti-counterfeiting basis. Characteristics are excellent, the formula of printing ink is difficult to copy, and the anti-counterfeiting performance of a printed product is greatly improved; a color pattern can be displayed only under the excitationof detection equipment, so that higher invisibility and anti-counterfeiting performance are achieved.

The invention discloses a ceramic tile made of simulated sandstone and a preparation process of the ceramic tile. The ceramic tile comprises a ceramic tile green body and an enamel layer on the surface of the ceramic tile green body. The ceramic tile is characterized in that stone-shaped stripes and ink jet coarse sandstone patterns are printed on the surface of the enamel layer, the enamel layer sequentially comprises a bottom enamel layer, a surface enamel layer, a first-time dot enamel layer, a second-time dot enamel layer, a protection enamel layer and a dry granular enamel layer, an area of the first-time dot enamel layer accounts for 95-99.9% that of the surface of the ceramic tile, and an area of the second-time dot enamel layer accounts for 70-90% of that of the ceramic tile. Processes of repeated enameling and distributing, drum, ink jet, dry granule distributing and single-roller letterpress printing are adopted, multilayer texture and multilayer enamel color are formed, and an effect like natural real sandstone formed by nature is completely realized.

The invention discloses a novel secure file, which comprises two layers or three layers of patterns. When the secure file comprises two layers of patterns, the bottom layer is subjected to offset printing, and the surface layer is subjected to letterpress printing; the bottom layer of the secure file gives out monochromatic light with the same color as that of the bottom layer under the excitation of infrared laser, while the surface layer gives out light visible to human eyes under the excitation of the infrared laser. When the secure file comprises three layers of patterns, both the bottom layer and the surface layer are subjected to offset printing, and the middle layer is subjected to letterpress printing; and the bottom layer or the surface layer of the secure file gives out monochromatic light with the same color as that of the bottom layer or the surface layer correspondingly under the excitation of the infrared laser. The novel secure file implements an infrared up-conversion fluorescent material by combining the offset printing and letterpress printing ways with the light-emitting characteristics of infrared up-conversion composite white light, gives out two kinds of different visible lights recognizable by human eyes under the excitation of the infrared light, and is difficult to imitate, strongly elusive and easy to distinguish anti-counterfeiting effects.

In a halftone image formed on a printing plate for letterpress printing, a minimum halftone dot has a square main cluster consisting of 9 pixels and four sub-clusters located around the main cluster radially, each of which is one pixel. Each sub-cluster contacts with only a vertex of the main cluster. Convex portions corresponding to the minimum halftone dots in the halftone image are formed on the printing plate. A convex portion corresponding to the main cluster is supported by convex portions corresponding to the sub-clusters to increase the strength of relief corresponding to the minimum halftone dot. Reliefs corresponding to the minimum halftone dots are normally formed regardless of a dot area rate of highlight area to thereby improve reproduction in printing of the halftone image.

The invention discloses graphene/nano-silver light-sensitive conductive composite paste and a preparation method therefor. The composite paste comprises the following raw materials based on weight: graphene and spherical nano-silver, wherein the weight ratio of graphene to spherical nano-silver is 1 to 2.0-3.5; and the preparation process comprises the steps of drying graphene and then mixing the raw materials under yellow light to obtain the composite paste. Due to the reasonable formula of the graphene and nano-silver and the new technological method, the light-sensitive silver paste obtains the characteristics of clear image development, high resolution, extremely high conductivity, high coating film strength and the like; the paste is subjected to silk-screen printing, letterpress printing, surface drying, exposing and developing to obtain a pattern with the required high resolution (L/S is greater than 30/30[mu]m); and in addition, the composite paste has excellent printing performance, high storage stability, excellent conductivity, high resolution, and high adhesive force.

The invention relates to a tagging method of gravure online variable information. The tagging method is characterized in that a nozzle is additionally arranged on any traditional printing machine including a gravure printing machine, an offset press, a letterpress printing machine and a rotary flexo press, so that an online variable information printing system is formed. A marking image or a packaging image is still printed in any mode including the gravure printing machine, the offset press, the letterpress printing machine and the rotary flexo press, and the variable information of an explicit two-dimensional code or an invisible two-dimensional code is realized in a code spraying mode. The marking image or the packaging image and the variable information of the explicit two-dimensional code or the invisible two-dimensional code are performed on line on the same printing line. When the transformed printing machine is used for printing variable information markers or packages, the marking image or the packaging image is printed, and additionally, the variable information of the explicit two-dimensional code or the invisible two-dimensional code can be loaded; and the tagging method has the characteristics of low introduction cost, high printing efficiency and high printing precision of the marking image or the packaging image and is suitable for wide popularization, and one tag with one code can be realized.

The invention provides a cigarette packaging material color difference detection method based on digital image processing. The method comprises the following steps of setting a CCD camera to photograph a cigarette packaging material to obtain a full-color image of an outer package; carrying out region division of the full-color image according to positions, and carrying out digital image processing of a Lab color mode on each region; performing color difference calculation of the colors of all the areas, comparing color difference values with a standard sample, and if the color difference values are larger than a set threshold value, that the colors of the cigarette packaging materials are different is judged. The method is advantaged in that a problem of poor detection effect on complex packages such as complex colors, high-gloss materials, silk-screen printing, letterpress printing and the like due to the fact that an existing cigarette packaging material is detected by adopting a colorimeter is solved, detection efficiency of cigarette packaging can be improved, and detection cost of cigarette packaging is reduced.