215 results about "Screentone" patented technology

Methods, systems, and compositions that make it possible to form high resolution, pressure sensitive adhesive patterns or films on a wide range of substrates. The compositions generally incorporate a curable, fluid composition (i.e., pressure sensitive adhesive precursor). When cured, a pressure sensitive adhesive is formed. Ink jet printing and subsequent curing allows pressure sensitive adhesive features to be formed with high resolution and tremendous flexibility in the patterns by which adhesive features may be formed. Preferred embodiments of the invention incorporate rheology modifying agents that can be used to promote favorable dot gain and other printing characteristics, the ability to build print thickness, and mechanical properties of resultant cured adhesives.

The present invention relates to an imaged article comprising a substrate having a primed surface layer. The primed surface layer is comprised of a base polymer having a solubility parameter, molecular weight (Mw) and glass transition temperature within a specified range. The presence of the primer improves the overall image quality by improving at least one property including ink uptake, dot gain, color density and/or ink adhesion. Preferred primer compositions are soluble at least in part in the ink composition resulting in an increase in ink layer thickness that further improves the durability and/or day/night color balance. A variety of substrates may be primed including various sheeting for traffic control signage and commercial graphic films for advertising and promotional displays.

In the case where an image is formed with a mixture of large and small droplets by bi-directional printing in an ink jet printing apparatus in which ink is ejected in the form of, e.g., a droplet for printing operation while scanning by a print head, misalignment caused by a difference in ejection speed between the large and small droplets is prevented. For this purpose, there is provided a printing registration method according to the present invention comprises the steps of forming reference dots with the large and small droplets in forward scan printing, forming shifted dots in reverse scan printing on changed registration conditions, acquiring a adjustment value of the condition of dot forming positions on the basis of optical characteristics according to a plurality of shifting amounts of the relative printing positions between forward scanning and reverse scanning, controlling the order of formation of the large and small dots in the forward scanning and the reverse scanning, and correcting the adjustment value according to the offset amount of the small dot forming positions on the basis of the difference in ejection speed or the like.

Cumulative histograms generated based on threshold matrixes with respect to halftone-dot area percentage data of the four plates C, M, Y, K are referred to for thereby determining the existential probability of halftone dots. Then, average colorimetric data are calculated from predetermined colorimetric data with respect to every 2n colors using the area percentage as a weighting coefficient. An anti-aliasing filtering process is effected on the average colorimetric data to produce device-independent image data for a color printer. The cumulative histograms are emphasized and the average colorimetric data are emphasized to accurately reproduce a peculiar pattern such as a rosette image which will appear on a printed document on a proof which is outputted from a low-resolution color printer. A process is provided for changing the halftone-dot area percentage data based on the type (wood-free paper, art paper, or the like) of paper of a print sheet of the printed document and the halftone-dot area percentage data on presensitized plates, when the halftone-dot area percentage data are converted into bit map data for the color printer, for thereby reproducing "impression irregularity" and "harshness" out of the visual irregular qualities of paper.

The invention relates to a manufacturing method and a product for a nickel screen die roll for fabric printing. The process comprises the following steps: machining, electroplating, copper grinding and polishing, glue coating, description and typesetting, corrosion, and detection. The manufacturing method is characterized in that: the procedure of the description and typesetting is followed by laser engraving; the laser engraving has the concentricity jump of a calibrated printing roll less than or equal to 0.02, printing roll rotating speed of 700 r/min, dynamic balance less than 2, laser power of 20W and engraving length of 2,220 mm; the laser engraving is centrally symmetric; the shape of the nickel screen die roll is a hexagonal, square, diamond or circular mesh point die roll rotating15 degrees; mesh points are U-shaped; and a screen wall is fine and is almost perpendicular. The manufacturing method adopts a jointless laser engraving technique and a controllable corrosion process. The product has the U-shaped mesh points with a large bottom area so as to greatly improve the strength of binding with stuffed insulating rubber, prolong the service life of the die roll, and having relatively stable nickel screen aperture ratio and fewer changes.

The invention relates to a method for generating a dot matrix pattern capable of recording multiple-bit information in the field of information processing. According to the method, a point with a website can record the multiple-bit information, only one reference dot matrix line needs to be set on a 45-degree inclination angle, correction of position printing errors on a printing machine can be achieved, and efficiency of information recording can be improved. The invention also provides another dot matrix pattern capable of recording the multiple-bit information. The gray value of the dot matrix pattern is only 1/4 the maximum gray value of a common two-dimensional bar code, in addition, the information amount is large, network addresses, anti-fake information and the like can be hidden in a commodity logo, the dot matrix pattern capable of recording the multiple-bit information is especially suitable for being recognized and read by public cell phones and can serve as a network inlet of Internet of Things, and any commodity can be connected with the network. The invention further provides a method for obtaining randomly-distributed variable information only through common printing, therefore, printing cost is reduced, anti-fake grades are improved, and popularization is facilitated.

The invention relates to a method for engraving a gravure grinding roller by laser, which is applied to realizing gravure grinding printing. The method comprises the following specific manufacturing steps of (1) rubber coating, (2) rubber sintering, (3) corroding, (4) rubber removing, (5) chromium plating, and (6) checking. The method for engraving a gravure grinding roller by laser, disclosed by the invention, has the advantages that the depth requirement is strict, and 0.05mesh of net points can be controlled so that the printing ink content of each net point is uniform in a printing process; after the printing ink is subjected to gravure transfer printing, the thickness of a whole layout can be uniform, the leveling is good, the concave-convex feeling can be generated; compared with a silk screen manner, the gravure printing manner has the advantages of good third dimension, large printing format, high speed and high efficiency; and the thickness of the printing oil can be precisely controlled, the waste is reduced and the environment protection is realized.

The invention discloses invisible code graphics, a processing method of the invisible code graphics and anti-fake application and belongs to the field of information processing. The processing method includes a processing method with the image hiding technology and the coding technology combined. Images are divided into two parts, two different screening manners are adopted for screening the two parts of the images respectively, amplitude-modulating screening is conducted on an information hiding part, frequency modulating screening is conducted on the other part of the images, and meanwhile coding information is recorded according to the sequence of exposing pixel points in a grid of an area needing information hiding so that the purpose of information hiding can be achieved. The hidden code graphics serves as anti-fake labels, after the labels are copied by a common copying machine, the images with amplitude-modulating dot screening can be well shown, however, the images with amplitude-modulating dot screening cannot be completely shown, and therefore the code graphics can be shown and initial fake prevention is achieved. Meanwhile, buried coded messages can be obtained through an image sensor, and therefore authenticity is identified after the coded messages are compared with content on certificates and securities.

A printing relief plate, within a screen tint region, includes main halftone dot convexities, halftone dot convexities, and other halftone dot convexities, in which the heights of printing surfaces of the halftone dot convexities to which ink is applied differ from each other in a plurality of halftone dot convexity height levels.

This invention provides a lithographic printing plate material that is excellent in contamination recovery and halftone dot quality and is less likely to cause printing troubles by dust adherence or the like. The lithographic printing plate material comprises an aluminum base material and an image forming function layer provided on the aluminum base material, the image forming function layer containing a photo-thermal conversion material, a photopolymerizable compound, and a polymerization initiator. The lithographic printing plate material is characterized in that the image forming function layer in its non-image part can be removed by, after image-wise exposure, supplying a printing ink containing at least one material selected from polymerizable monomers and polymerizable oligomers. There are also provided a lithographic printing plate, a method for preparing the lithographic printing plate, and a method for printing by a lithographic printing plate.

The invention relates to a method for presetting digital printing ink and provides an ink key opening forecasting method based on a Fuzzy ART-BP mixed neural network algorithm of a Fuzzy ART neural network and a BP neural network. An input vector is stably classified by fully utilizing the self-learning, self-organizing and information fuzzy processing capacities of the Fuzzy ART neural network by the network; for each classification, nonlinear mapping is performed on the input and output vectors of a training sample by utilizing the BP neural network, namely, a mapping relation between image-text digital information and ink key control parameter of the training sample is established by taking printing on-site temperature, humidity, a printer rotating speed and a website area rate corresponding to an ink area as input vectors and an ink key opening value as an output vector; and a converged network is used for forecasting the ink key opening value of a new sample. The network learning is higher in pertinence, the iteration times of the BP network is reduced, the network has the increment type learning capacity and the generalization of the network is increased.

The invention relates to a printing roll manufacturing technique, in particular to a method for manufacturing gravure with laser anti-counterfeit lines. The process comprises the following steps: mechanical processing, copper plating, grinding, manuscript making, frictioning, laser engraving, corroding and chrome plating. Compared with the prior art, the method has the advantages that: thick lines with a thickness of less than 0.06 millimeter are engraved in form of dotted lines; the thickness and length of the solid lines and the dotted lines are well controlled; the solid lines serving as lattice points and dotted lines serving as lattice wall are directly engraved by laser; the etch depth is 0.015 to 0.018 millimeter; after etching, the final distance between solid lines is 1 to 3 micrometers; and that the printed lines are thick and not broken can be ensured.

The invention discloses anti-fake trace with visible information, it includes multiple rowed visible net dot, part of mobile net dot moves to the same side, forms connotative pattern. It also discloses a testing tool and method for mentioned perspective information anti-fake prints, the base material is transparent testing glue which is used as testing tool to test the anti-fake print, the testing glue is arranged with several lighttight dark stripes, the dark stripes can cover on each row of net dot or among the dots, thus exposes the pattern formed by the movement of mobile net dots; the invention also discloses a anti-fake stamp for printing the mentioned perspective information. It is not easy to be forged, and the method and tool are simple, and convenient.

The invention provides a method for printing on-site and transitional-layer images and texts in a color-overlapped manner by a gravure plate. The method comprises the following steps: firstly printing on-site and transitional-layer dot images and texts and printing large-area on-site images and texts and basic transitional layer dots, wherein a gravure plate is made in an on-site-to-highlight transition manner, and ink cell angles are square dots; and overprinting transitional-layer dot images and texts, wherein the transitional layer dots of the gravure plate are made in a manner of highlight-to-middle tone-to-highlight transition, and ink cell angles are elongated dots. With the application of the method, a gravure press can be used for successfully printing products with on-site and transitional-layer images and texts in one time, the traditional printing manner combining gravure with offset printing is not used, and the application scope and the production efficiency of the gravure technology can be improved effectively.

The invention provides a multi-screen printing process comprising the following steps of: 1, partitioning patterns in a layout of a printed page according to characters during plate making before printing; 2, respectively rasterizing the partitioned patterns and outputting subfiles; 3, editing the subfiles, combining the subfiles into an integral layout of the printed page, rasterizing the subfiles again and outputting the subfiles to an electronic film; and 4, outputting the electronic film to a film or making a printing plate. After the patterns are partitioned, colors in all regions can be respectively adjusted into screentones most suitable for printing types, so that the picture quality is up to the optimized, and the problem of poor local printing effect caused by adopting the same screen type is avoided. Combination of different screentone types can be adopted on some color printed bills with anti-fake requirements under the condition that multi-color printing is not additionally provided, so that the effect of anti-fake scanning and color scanning imitation is achieved.

The invention discloses a printing process of a light guide plate. The printing process of the light guide plate includes the following steps that (1) a light transmission plate is provided; (2) a photo-sensitive glue layer is pasted to a frame of a silk screen, screen dots are designed, the photo-sensitive glue layer is dried with hot air at the temperature of 75-85 DEG C for 10-20 minutes, a film base of a photo-sensitive film is uncovered, then plate burning is carried out, and a screen printing plate is obtained after development; (3) a protection film on the bottom face of the light transmission plate is torn, the surface of the light transmission plate is wiped thoroughly with ethyl alcohol so as to remove residues on the surface, the bottom face is attached to the screen printing plate, halogen-free ink is poured to one end of the screen printing plate, the angle of inclination of a scraping and printing scraper blade is adjusted to be 65-85 degrees, all the ink on the screen printing plate moves towards the other end, and accordingly multiple scattering screen dots are printed; and (4) the bottom face, where the scattering screen dots are printed, of the light transmission plate is irradiated by ultraviolet light for 2-6 seconds, and the light transmission plate is conveyed to a tunnel furnace through a roller bed, is heated at the temperature of 85-95 DEG C for 2-4 minutes to be cured, and is cooled to the temperature of 70-80 DEG C to be thoroughly cured. The scattering screen dots printed through the printing process have the dual effects of light refraction and high light reflection, and have excellent brightness.

The invention relates to a ceramic anilox roll adopting snake-shaped stretch dots. The ceramic anilox roll comprises a ceramic roll body, an anilox bearing printing ink is arranged on the outer wall of the ceramic roll body, the anilox is formed by arraying of a plurality of identical dots, and the dots are the snake-shaped stretch dots. Compared with the prior art, the ceramic anilox roll has the advantages that the number of engraving lines is increased, high-definition printing is achieved, dot extension is reduced and the like.

An image processing apparatus includes an area extracting unit and a table image detecting unit. The area extracting unit is configured to extract a halftone dot area and character images in an image. The table image detecting unit is configured to detect the extracted halftone dot area as a table image if (a) the extracted halftone dot area includes no ruled lines and (b1) at least two of the detected character images are arranged in a primary scanning direction or a secondary scanning direction in the halftone dot area and (b2) character alignment of a tabular layout is detected on the character images on the basis of positional relations between divisional areas into which the halftone dot area is equally divided and the character images.