481 results about "Overprinting" patented technology

The present disclosure relates generally to data hiding for product packaging and other printed objects. One embodiment embeds an information signal in a spot color for product packaging. The spot color is screened, and overprinted with process color tint. The tint is modulated prior to overprinting with optimized signal tweaks. The optimization can include consideration of a detector spectral dependency (e.g., red and/or green illumination). Other embodiments and combinations are described in the subject patent document.

The invention relates to an anti-counterfeiting printing method by using invisible two-dimensional codes. The anti-counterfeiting printing method is characterized in that at least four printing layers for printing are adopted, and comprises the following steps of: firstly, providing a digital serial number and splitting the serial number into three fields of which information is assigned to three groups of two-dimensional codes; secondly, printing one group of two-dimensional codes on a first layer by using aqueous ink black materials; thirdly, overprinting a grey isolating layer on the first two-dimensional code layer by using infrared non-absorbent materials to form a second layer; fourthly, overprinting a second group of two-dimensional codes on the second layer of the grey isolating layer by using the infrared non-absorbent materials to form a third layer; and finally, overprinting a third group of two-dimensional codes on the third two-dimensional code layer by using ultraviolet absorption materials to form a fourth layer. The method has the advantages of eliminating the possibility of imitation by scanning the two-dimensional codes and achieving relatively higher use value because the overprinting is performed in the same area in an offset printing and digital jet printing way and the upper printing layer covers the lower layer naturally.

A printing apparatus has a series of inkjet print heads spaced from one another in a transport direction. A continuous belt driven around a roller system is used to feed sheet media successively to the print heads so that a partial image printed by one print head is overprinted at a subsequent print head with registration of the partial images. A sheet medium is caused to become electrostatically tacked to the belt by passing the sheet past a charging device. Movement of the belt is tracked by a tracking sub-system and operation of the print heads is coordinated with the tracked belt movement to achieve precise registration of the partial images.

In a four pen ink jet printer comprising cyan, yellow, magenta, and black inks, a clear liquid is applied to printed ink on a print medium via a fifth pen, thereby fixing. the colorants, which in turn improves the durability of the printed ink. The clear fixer fluid comprises at least one organic acid and, optionally, a salt of at least one polymeric acid.

Overprint compositions for toner-based prints containing at least one radiation oligomer/monomer, at least one photoinitiator, and at least one surfactant are disclosed. The overprint compositions provide a number of advantages to toner-based prints, such as, for example, those subjected to abrasives, heat, and/or sunlight since the compositions protect such images from cracking, fading, and smearing. In addition, the overprint compositions provide resistance to thermal cracking, which is assessed by image analysis of the thermal crack area after exposure of the print to thermal shock.

The invention discloses an alcoholic group liquid ink capable of realizing high-speed printing, which comprises the components by weight percent: 5-20% of solid resin, 20-85% of alcohols solvent, 2-60% of non-alcohols solvent, 5-40% of pigment, 0-10% of accessory ingredient, 0.5-5% of cross-linking agent and 0.5-6% of gas-phase silicon dioxide. The cross-linking agent is added into a former-colorink during overprinting, so that the cross-linking reaction is performed during drying, the molecular weight of carrier (comprising dispersing agent) resin in the ink is fast increased, the carrier (comprising dispersing agent) resin can not be dissolved or can be hardly dissolved in the dissolvent in the ink, and a later-color ink can not be fast dissolved in the former-color ink during contacting in an overlapping way, therefore, the overprinting working procedure can be smoothly completed.

The invention relates to a cold rolled tin-plated steel plate for multiple printing and painting and a manufacturing method thereof, and aims to solve the technical problems that in the prior art, the coating on the conventional cold rolled tin-plated steel plates for multiple printing and painting can be easily peeled off, the adhesive force between the coating and the steel plate is weak, and the color developing effect is bad after printing. The manufacturing method comprises the following steps: washing a hot-rolled hard tin-plated steel plate with a thickness of 1.8 to 2.3 mm by acid, performing continuous cold rolling, carrying out continuous annealing, flattening, electroplating tin on the steel plate, passivating the steel plate, and finally rolling the steel plate to obtain a finished product; wherein the cold rolling reduction ratio is 85 to 90%, the annealing temperature is 550 to 620 DEG C, the temperature is maintained for 60 to 120 seconds, the steel plate is flattened by two machines, the work roller of the first machine is an electro-discharge texturing roller with a Ra of 1.2 to 1.6 um, the rolling force is 500 to 700 t; the work roller of the second machine is a grinding roller with a Ra of 0.3 to 0.5 um, the rolling force is 250 to 350 t; the flattening elongation rate is 1 to 2%, and the passivation is carried out through an electrochemical method and a chemical method. The provided steel plate is mainly used to produce food/beverage cans, which have requirements on multi-color printing.

A water-basedsoft printing ink comprises the following compositions: 30 to 35 percent of pigment, 25 to 32 percent of acrylic resin, 0.2 to 0.5 percent of antifoaming agent, 2 to 5 percent of ethylene glycol monomethyl ether, 1.0 to 2.5 percent of wax slurry, 0.9 to 1.5 percent of leveling agent, and 23 to 30 percent of water. A preparation method comprises the three working procedures of colored slurry grinding, aquosity treatment and printing ink preparation in turn. The water-basedsoft printing ink has novel compositions, scientific blending, simple preparation, lower cost, fine ink quality, mellow brightness, high color saturation, brilliant color, high drying speed, grid point superimposition and overprinting, good water solubility, easy cleaning, corrosiveness free on printing rollers, low viscosity, high color content, good penetrability and printing adaptability, suitability for multicolor machine high-speed printing, high abrasion resistance, difficult decolorization, wide color range, closeness to a normal color sample, and consistency to the requirements on top-grade printing; and the printing ink also meets EU ROHS standards, and facilitates safe production and environmental protection with low air pollution and without any noxious solvent residual.

In web/ink-jet operations in which ink jet data is over-printed on forms prepared by offset litho, undesirable interactions between the surface size and litho-fountain are controlled by use of a PCC basesheet having a size press coating of starch and alum, the alum amount being at least 0.75% by weight.

Radiation curable overprint compositions containing a radiation curable oligomer/monomer, at least one photoinitiator, and at least one surfactant are disclosed. The overprint compositions are particularly well-suited for reducing or preventing document offset and for protecting xerographic images on substrates subjected to abrasives, heat, and/or sunlight since the compositions protect such images from cracking, fading, and smearing.

The invention provides a piece of high-precision overlay gold stamping paper and a manufacturing method thereof. When printing and overprinting are conducted through two existing types of alumite, the printing and stamping accuracy is not high, the printing deflection is large, and waste is prone to happening. The high-precision overlay gold stamping paper sequentially comprises a tipping base paper layer (1), a printing layer (2), a first gold stamping layer (3) and an overlay stamping layer from bottom to top. The manufacturing method includes the following steps of firstly, printing a piece of tipping paper; secondly, designing a pattern; thirdly, manufacturing an overlay gold stamping plate; fourthly, preparing hot stamping; fifthly, conducting the first time of hot stamping; fifthly, conducting overlay stamping; sixthly, conducting checking and unwinding. In the post-printing gold stamping and overlay stamping process, no inaccurate printing phenomena exist, the transverse and longitudinal overlay stamping accuracy is 0.01 mm, the printing accuracy is greatly improved, and the gold stamping plate does not need to be aligned multiple times. Due to the fact that positioned overlay stamping is conducted at a specific position of a tipping paper ink layer, products are more personalized, and meanwhile the anti-counterfeit function is achieved.

The invention discloses a method for preparing a crystalline silicon solar battery electrode by utilizing an overprinting way. The processing steps are as follows: A, preparing silicon slice for manufacturing electrodes, carrying out first electrode printing according to printing graphic aiming at contact design, and then drying and sintering; B, carrying out second electrode printing according tothe printing image of the first electrode printing or the printing image designed aiming at battery conductive resistance, overprinting on the first print graphic, and then drying and sintering. In the method of the invention, as subsequent overprinting can adopt sizing agents with different material ingredients, electrical conduction is improved, the method after whole sintering not only meets metal contact but also obtains good electrical conduction, thereby being capable of effectively improving filling factor and finally impacting on battery performance. Subsequent overprinting is attached on the surface of the first printing electrode to form a conductive structure. Overprinting process can effectively avoid frequent disconnection and incomplete printing occasions in existing printing.

The invention discloses a secondary overprinting process of the front electrode, which comprises the following steps: using No. 1 screen printing machine to print the back electrode; using No. 2 screen printing machine to print the back electric field; after the back electrode and the back electric field are printed, the battery The pattern printing of the grid lines on the front side of the chip is completed through the secondary overprinting of the main grid lines and the auxiliary grid lines, that is, the main grid lines and the auxiliary grid lines are printed separately. The present invention adopts the secondary overprinting technology for the grid lines on the front of the cell, without affecting the aspect ratio of the auxiliary grid lines, reduces the height of the main grid lines, improves the printing quality, and reduces the consumption of silver paste, so as to reduce the production cost of the battery sheet. cost and improve conversion efficiency.

The invention relates to a reel material printer pre-positioning automatic overprinting system of various color overprinting in printing machinery and an automatic overprinting method. The system comprises an overprint color mark line of a first color a photoelectric sensor, a plate cylinder, two position signal rods and a photoelectric sensor, a rotary encoder synchronized with the gear of the plate cylinder, an overprint motor, an overprint screw rod, a control system and other mechanisms, the error of overprinting of a subsequent printing color and the first color is regulated to be zero by means of observation of vision (or stroboscope, still picture system and the like), and the condition is confirmed that: the photoelectric sensor measures that the position of a signal of the overprint color mark line of the first color and the plate cylinder virtual reference register central position are positions with zero overprint error. In each subsequent time of printing, the system is controlled to instruct the overprint motor to drive an overprint screw shaft and an overprint regulating shaft to perform error regulation according changes of the position of the signal of the overprint color mark line of the first color and the plate cylinder virtual register central position of the nth color detected by the photoelectric sensor.

The invention discloses a method for overprinting colour identification and make-up applied to gravure printing, comprising the following steps: make-up, colour code set, and registration colour; when gravure printing products are in punching, blank waste material with a certain area is left between patterns, in the invention colour code is set on the blank material to blank material to register colour, thereby achieving the purpose of printing and tracing registration, saving the around 20mm of waste material band which must be left in current gravure printing process, and ensuring no influence on the efficiency of the follow-up production, thus greatly saving the consumption of raw material and lowering production cost, therefore, the invention has broad practicability.

The invention discloses a transferring method of holographic anti-counterfeiting patterns suitable for gravure positioning overprinting. The transferring method comprises the following steps that a laser plate provided with positioning patterns is manufactured, and a holographic positioning mark is manufactured near each positioning pattern; a base film is coated with a transferring acrylic acid lacquer coating layer with a mould pressing property; the locating patterns and the holographic positioning marks on the laser plate are embossed on the acrylic acid lacquer coating layer on the base film; the face, provided with the positioning patterns, on a positioning holographic film is aluminized in a vacuum mode; paper and the positioning holographic transfer film are composited; the positioning holographic paper is dried through a drying oven to be formed; the base film in the formed positioning holographic paper is peeled off and finally the coating carrying the positioning holographic patterns is kept on the paper. The transferring method of the holographic anti-counterfeiting patterns can effectively control the relative positions of all the positioning patterns of the transfer film and the size deviation between the holographic positioning marks on the transfer film and printing positioning marks on the paper.

The invention relates to a digital printing overprinting method of jacquard fabric. At present, a manufacturing method for organically combining the jacquard weaving and the digital printing of the fabric does not exist. The digital printing and overprinting method is characterized by comprising the steps of 1) determining the jacquard fabric needing to be subjected to digital printing overprinting; 2) overprinting printing patterns on the jacquard fabric by digital printing so as to match the digital printing patterns on the jacquard fabric with jacquard patterns and form combined patterns combining the jacquard patterns and the digital printing patterns on the jacquard fabric. According to the digital printing overprinting method, the process design is scientific, the operation is simple and convenient, the complicated positioning is not needed, the jacquard of the fabric and the digital printing can be combined organically, a product with the jacquard patterns and digital printing patterns can be produced, has a strong three-dimensional effect, is layered, colorful and strong in expression.

The invention provides UV (Ultraviolet) impressing gloss oil. The UV impressing gloss oil contains components according to the following weight ratios: 10-30 parts of polyacrylic acid resin, 20-40 parts of polyurethane resin, 40-60 parts of diluent monomer, 2-10 parts of photoinitiator, and 1-5 parts of auxiliary. The invention also provides a preparation method of the UV impressing gloss oil. The UV impressing gloss oil provided by the invention adopts the matching of the polyacrylic acid resin and the polyurethane resin, can meet the requirements on both adhesive force and curing speed, has excellent adhesive force to a plastic film, such as a PET (Polyethylene Terephthalate) film, and can be rapidly cured; moreover, in the process of rapid curing, the coating volume shrinkage of the UV impressing gloss oil provided by the invention is little, and the deformation of a base material of the plastic film can be reduced so as to be beneficial to the precise overprinting of impressing images and texts and printing images and texts; the UV impressing gloss oil provided by the invention is high in solid content, the impressing of images and texts with deeper grains is easy to realize, and a large amount of evaporation of a solvent does not exist in use, so that the UV impressing gloss oil has good environmental protection performance.

The invention relates to the field of printing machine overprinting error on-line detection and fault diagnosis, in particular to a printing machine vertical alignment online detection and fault diagnosis method and device which can measure printing roller motion errors. The method comprises the steps of S1, using a color code sensor to detect various color code signals distributed in the circumferential direction of the printing roller, comparing the signals with a location encoder, conducting motion error compensation to obtain an initial overprinting detection error Lij0(t); S2, using a CCD image sensor to detect a cross curve overprinting error Lij1(t), conducting compensation to obtain a precise overprinting error; S3, calculating the difference between the initial error value and the precise error value by using the equation delta Lij (t) = Lij0 (t) -Lij1 (t); S4, using the difference delta Lij (t), speed, vibration and other information to establish a mathematical model, training with a neural network system, conducting online precision compensation to the initial error value to obtain an overprinting error Lij(t) nearing the true value; S5, at the same time, it is possible to use the multi-information fusion theory to diagnose out the reasons of the overprinting, electrical and mechanical faults. Compared with the prior art, the printing machine vertical alignment online detection and fault diagnosis method and device has a high online detection precision which can reach 10 micrometers, the detection speed is fast, and the device has the function of diagnosing faults and other advantages.

The invention relates to a polyethylene heat shrinkable film gravure printing process which comprises the following steps of: (1) unwinding a polyethylene heat shrinkable film; (2) carrying out unwinding drawing; (3) carrying out inking by a drop roller; (4) scraping ink by a scraper; (5) carrying out gravure printing; (6) drying ink; (7) cooling a printed object; (8) carrying out multiple color class overprinting, wherein the steps (3), (4), (5), (6) and (7) are sequentially repeated; (9) carrying out winding drawing; (10) winding; (11) checking the quality; (12) stripping; (13) sealing and cutting; and (14) carrying out finished product packaging to obtain a finished product, wherein when the step (6) is implemented, the ink printed on the surface of the polyethylene heat shrinkable film is dried by modes of feeding hot blast by an air blower and circulating the hot blast by a drying box and related equipment comprises an air energy heating device, the air blower, an external heating box, a suction fan and the drying box with an effect of an air chipper. The polyethylene heat shrinkable film gravure printing process is used for carrying out gravure printing on the polyethylene heat shrinkable film.

An ink curable with actinic energy rays which is characterized by containing a photocleavage type photopolymerization initiator (A) comprising α-aminoalkylphenone compound (A1) having a molar absorption coefficient as measured at a wavelength of 365 nm of 100 (l/mol·cm) or more and less than 100,000 (l/mol·cm) and/or an acylphosphine oxide compound (A2) having a molar absorption coefficient as measured at a wavelength of 365 nm of 100 (l/mol·cm) or more and less than 100,000 (l/mol·cm); and a hydrogen abstraction type photopolymerization initiator (B) comprising 4,4′-dialkylaminobenzophenone having a molar absorption coefficient at a wavelength of 365 nm of 10,000 (l/mol·cm) or more and less than 1,000,000 (l/mol·cm) and by optionally containing a tertiary amine compound (C) having a molar extinction coefficient as measured at a wavelength of 365 nm of 1 (l/mol·cm) or lower. The ink curable with actinic energy rays further includes a resin, a pigment, and a compound having an acrylate group. When used with a light emitting ultraviolet rays especially having a luminescence-peak wavelength in the range of 350 to 420 nm as an ultraviolet irradiator, the ink has excellent curability and printability in both monocolor printing and overprinting, the ink further has excellent storage stability.