195 results about "Photogravure" patented technology

The invention provides an ink fountain roller, an ink distributing unit and an ink distributing system of a carving photogravure press. The ink duct roller is a cavity-die inking roller with quasi-grains at the surface, and the quasi-grains correspond to forme grains; the ink distributing unit comprises an ink fountain, the ink fountain roller, a hook type scraper and an elastic color model roller, wherein the ink fountain roller contacts with ink in the ink fountain, the scraper is arranged at one side of the ink fountain roller, the elastic color model roller is arranged at the other side of the ink fountain roller and is in rolling transmission with the ink fountain roller; and the ink distributing system also comprises a gravure roller and an impression roller. The ink fountain roller of the ink distributing unit transmits ink grains which correspond to the gravure grains and have different thicknesses to the color model roller to form basso-relievo-shaped quasi-grain ink; the basso-relievo-shaped quasi-grain ink is transmitted into the gravure grains on the gravure roller; and the gravure roller and the impression roller mutually press to carry out printing. The invention has short ink path, easily ensures the accuracy of ink distribution and easily maintains the printing adaptability without ineffective circulation for the ink.

This invention relates to a photograghic intaglio printing ink which equals to carving intaglio printing ink. It can be used in photographic intaglio printer, and its outstanding feature is that the price of the printer is cheap, lithographic cost is low, and the post-treatment step of sewage during printing process is unneeded, so the sewage from carving intaglio printing ink printing process is eradicated completely and with no environmental pollution, and the printing ink is no waste and its non-offset performance is very good. It dries quickly, so it shortens the production cycle and saves the production buildings and land. The color of ink of its printing is of distinct hierachical structure and strong stereoscopic feeling. Its printing effect is the same as that of carving intaglio printings. The physicochemical fastness of its printing is superior to that of carving intaglio printings. Its printing cost is low.

The invention relates to a printing method of fabrics, and in particular relates to a method for transferring patterns on a fiber fabric. The method comprises the steps of (1) coating a transfer layer: coating a prepared coating adhesive on a film or paper by a photogravure press or a coating machine so as to form the transfer layer on the surface of the film or the paper, drying, and then printing the surface of the transfer layer by utilizing dye base ink to prepare a transfer printing film or transfer printing paper; (2) starching the fiber fabric: coating fixation slurry for transfer printing on the surface of the fiber fabric; (3) transferring the patterns; and (4) evaporating and fixing: after the transfer, stripping the transfer printing film or the transfer printing paper, drying, evaporating and fixing the fiber fabric. According to the method, the difficulties that the dye base ink can not be directly printed on the film, and the transfer rate of the dye on the paper is not high can be solved, and also the transfer layer, the dye, the film and the paper with an isolation layer are not compatible, so that more than 98% of dye can be transferred, and the transfer rate and the color rate of the printing are improved greatly.

The invention discloses a method for detecting overprint errors of a photogravure press on the basis of a field programmable gate array (FPGA). The method comprises the following steps of: (1) taking a pulse signal after detecting a color code by two photoelectric eyes as a detecting pulse; (2) taking pulses A and B of an encoder as reference pulses and clock signals of an encoder pulse counter, taking a high-frequency clock in the FPGA as a clock signal of a system clock counter, and determining actual position values of the two photoelectric eyes according to an encoder pulse counter value corresponding to the detecting pulse, a system clock counter value, and system clock count value respectively corresponding to two pulses adjacent to the reference pulses respectively corresponding to two detecting pulses; and (3) determining the pulse count of the two photoelectric eyes within a time interval, wherein the arithmetic product of the pulse count and a pulse equivalent weight is an overprint deviation value. In the method, the high-frequency clock of the FPGA is used for subdividing the encoder to improve the resolution of the encoder so that the detection accuracy of the overprint errors is greatly improved and can meet photogravure registering requirements.

This invention provides a high speed synchronous paper but-joint device of an unit gravure machine including a turning frame, a turning big arm, a cutting unit, a frame, a swing-roller, a paper-end cutter fixed on the frame, a large roller and a paper roller with back-adhered glue, in which, the paper-end cutter is under the large roller driven by an executing cylinder, a test photoelectric eye is set on the cutter, a steel strip is set on the head of a paper roll, a coder is set on the big roller and the back-adhered paper roll is driven by the executing cylinder and the steel strip is adhered on the head of a new material with a double-side adhesive tape.

The invention provides a photogravure press, a coating roller of which is made of rubber to ensure that the coating roller is respectively in flexible contact with an absorbing roller and a to-be-printed steel plate, and thus the tightness of the contact is ensured, a pattern region on the absorbing roller can be completely transferred on the coating roller, and a pattern region on the coating roller also can be completely transferred to the to-be-printed steel plate, therefore a complete pattern region is formed. In addition, the photogravure press provided by the invention comprises a first scraper and a second scraper, wherein the first scraper is used for scraping a coating on the absorbing roller, except for a pit for forming an image region, the second scraper is used for removing residual coating on a rubber roller after transferring, therefore, the defects of lower labor efficiency and poor control precision caused by manual removal of the coating are avoided, and thus the labor productivity is increased and the product quality is ensured. In addition, the first scraper and the second scraper are respectively in contact with the absorbing roller and the coating roller by a specific angle, and thus a better scraping effect can be ensured.

The invention relates to the technical fields of decorative materials and manufacturing methods thereof, in particular to a decorative film and a manufacturing method thereof. The decorative film comprises a substrate layer, a printing layer and a protective layer positioned on the surface of the printing layer from bottom to top, wherein the printing layer is printed on the surface of the substrate layer through a photogravure press; and the protective layer is a layer of UV paint. The printing layer in the decorative film is directly printed by a printer, and has vivid color. The surface of the decorative film is provided with the protective layer formed by the layer of UV paint, and the protective layer is automatically painted to the surface of the printing layer in a rolling way through machinery equipment, and promotes the decomposition of an initiator under the radiation of ultraviolet light to generate free radicals to initiate resin reaction for instant curing. The UV paint can well protect the printing layer, and improves the wear resistance and acid and alkali resistance of products; and glue-water adhesion or multi-layer attachment by heating is not used, so the environment is protected. The decorative film has simple process, and stable physical and chemical performance of the products.

The invention relates to the printing technical field, in particular to a photogravure technology providing the white card paper with surface effect of the cold card paper. The printing chromatology principle is applied, so as to print a silver ink layer and transparent yellow ink layer on the white card paper so that the white card paper can have the surface effect of the gold card paper. The invention can not only easily realize the surface effect of the gold card paper wholly or partially on the white card paper, but also can be directly inserted on the normal product printing color class without any extra special treatment, which is highly flexible, high-efficiency, low cost and environment protective.

The invention relates to a once-through method of aluminizer resin transfer printing, which is used in the thermal transfer printing technology and comprises the following steps: A. after hot melting resin is hot-melted into liquid, a photogravure press is used for printing a pattern on the aluminium layer of the aluminizer under the condition of keeping the melting state of the resin, and after being cooled to room temperature, the aluminizer is rolled up for standby; and B. when printing is needed, the surface of the aluminizer with the hot melting resin pattern is adhered on a printing stock, treated with impressing at the temperature of between 85 DEG C to 120 DEG C, and the thin film is stripped away after cooling, thus forming the finished product. The method combines the traditional transfer printing of two times, i.e., the pattern thermal transfer printing and the transfer printing of a metallic film layer plated with a metallic film, into the transfer printing of one time, the transfer printing pattern is distinct and smooth, the luster is strong, the color is abundant, and stereoscopic impression can be given.

The invention discloses a two-dimensional code spraying device applied to a photogravure press. The two-dimensional code spraying device comprises a fixed frame, and guide-in rollers, a photogravure assembly, an oven and guide-out rollers, which are arranged on the fixed frame; a printing substrate is guided by the guide-in rollers, is subjected to gravure on the photogravure assembly, and then is guided out by the guide-out rollers; the oven used for drying printing ink is arranged outside the guide-out rollers; a printing substrate turn-over device and a two-dimensional code sprayer are arranged between the guide-out rollers and the guide-in rollers. According to the reasonable design, the two-dimensional code sprayer can be reasonably arranged in photogravure equipment, two-dimensional code spraying becomes one part of automatic printing, and the production efficiency is improved greatly.

The invention discloses a digital color-spray color matching technique used for intaglio printing. A color manuscript is provided for intaglio printing through digital color-spray printing. Color pre-matching is conducted on a digital printer and a photogravure press before the color manuscript is printed through digital color-spray. By means of the digital color-spray color matching technique used for intaglio printing, the time for developing a new color can be greatly shortened, the success rate of new color designing and platemaking is increased, the printing effect is guaranteed, the waste of printing rollers is reduced, and the development cost is substantially reduced.

Disclosed is a gravure rolling drum of the photogravure printing press capable of forming a coating membrane on the substrate using photogravure by the printing press. The gravure rolling drum is provided with: an image area forming on the circumferential surface of the gravure rolling drum on which the coating pulp forms a coating membrane, and printing-direction walls substantially extending in printing-direction and perpendicular walls extending substantially in direction perpendicular to the printing-direction walls formed in the image areas, and a plurality of cells defined by the printing-direction walls and substantially perpendicular walls. Each perpendicular wall has a cut opening formed therein to communicate the adjacent cells.

A method for preparing water-based ink tipping paper with anti-bacterial and anti-virus function comprises the following steps: (1) dissolving the water-based ink by mixture of alcohol and water, adding 10 to 1,000 PPM Ganoderma applanatum solid powder or extractive powder of fermented Ganoderma applanatum mycelium; (2) sending the original tipping paper with vertical tensile strength greater than 2.0 KN/m and fixed quantity of 34-40 g/m2 in a drying zone of printing machine before printing, and pre-heating at the temperature of 110-120 DEG C; and (3) printing the pre-heated original tipping paper by a photogravure press with curving resolving capability of 60-120 lines per centimeter and glue rollers with shore harness of 45-80HS at the printing zone of the printing machine, heating at the temperature of 150-180 EDG C at the drying zone of the printing machine, repeating the steps for 2-4 times, and finally loading the printed tipping paper in the drying zone to heat at the temperature of 110-120 DEG C.

The invention discloses a multicolour photogravure method which uses spray Al paper as printing paper and waterborne ink as printing ink. During the printing process, firstly a layer of polyacrylate emulsion coating is printed on the spray Al paper, and after the polyacrylate emulsion coating is dried and cured, the waterborne ink is used for printing. By adopting the scheme for printing, the polyacrylate emulsion coating has good adhesive force with the metal layer such as the surface of the spray Al paper and the waterborne ink also has high coating ability with the polyacrylate emulsion coating so that the ink and papers can be well combined by using the polyacrylate emulsion coating, thus achieving the aim of increasing the adhesive force of ink. The method of the invention realizes that the waterborne ink can be printed on the spray Al paper by adopting the photogravure method, and ensures that the spray Al paper and the waterborne ink which are two kinds of environmental protection type printing materials can be widely applied in the photogravure method field and the photogravure tends to develop in the green and environmental protection direction.

The invention discloses an ink-conveying trolley of a photogravure press, comprising a printing roller (2), an ink-conveying roller (3), an ink-conveying roller up-and-down moving device, an ink-conveying roller fore-and-after moving device and a locking mechanism (30); the printing roller (2) is rotatably connected to a printing frame (1); and the ink-conveying roller (3) is rotatably connected to a frame (19) of the ink-conveying trolley. The transmission mechanism also comprises a power device which is connected to the printing frame (1) and respectively connected with the ink-conveying roller fore-and-after moving device and the ink-conveying roller up-and-down moving device by a transmission gear and a sprocket chain; the ink-conveying roller fore-and-after moving device and the ink-conveying roller up-and-down moving device are connected to the frame (19) of the ink-conveying trolley; and the locking mechanism (30) is connected with the printing frame (1). The invention adopting the structure can freely realize the fore-and-after and the up-and-down motion tracks of the ink-conveying roller and can be accurately locked on the printing frame so as to ensure favorable printing quality.

The invention provides a high-speed photogravure press which comprises a winding device, an unwinding device, and at least one set of embossing device positioned between the winding device and the unwinding device, wherein each set of the embossing device is composed of a printing device and a drying oven heating device; all sets of the embossing devices are connected through driving guide rollers. The high-speed photogravure press is characterized in that an emptying traction part connected though a driving guide roller is mounted between the embossing devices and the unwinding device; a receiving traction part connected though a driving guide roller is mounted between the embossing devices and the winding device; at least one roller swinging device used for controlling tension of a printing base material is arranged on the emptying traction part and the receiving traction part; each printing device comprises a backpressure roller device, a rubber roller device and a photogravure stick device which are sequentially arranged from top to bottom; and at least one drying oven heating device is provided with an adjusting device capable of driving gravure transfer speed to be the same. The equipment is consistent in speed, uniform in printing and good in effect, and balance weight adjustable hand wheel is arranged.

The photogravure printing is completed with photogravure comprising AM screen and FM screen. The text and reproduced image needing dense ink are formed with the meshes of corresponding AM screen, while the picture and fine lines with dark and light ink for representing are formed with the meshes of corresponding FM screen.

The invention discloses a waste heat recovery and hot air type energy-saving drying control system. The waste heat recovery and hot air type energy-saving drying control system comprises a drying oven exhaust fan (12), an exhaust air valve (21), an axial flow fan (19), a compressor (2), a heat exchanger A (1), a heat exchanger C (3) and a computer control center (14); the heat exchanger A (1) absorbs the heat energy (10) of harmful waste gas (16) exhausted by an air outlet (15) of a drying oven (11), and the heat energy (10) and the heat Z (23) generated by the compressor (2) act on the heat exchanger C (3) and then are conveyed into an air inlet (6) of the drying oven (11). According to the system, the basic heat is provided according to the Carnot principle, the COP is higher than 3.0, the heat recovered from the harmful waste gas is accumulated, the heating efficiency is greatly improved, and the energy is saved; according to the technological conditions of photogravure presses, compound machines and coating machines, the speed of an air inlet fan, the speed of the exhaust fan, the speed of the compressor for heat exchange and the angle of the exhaust air valve are adjusted in a stepless speed adjsutment mode for reducing unnecessary loss of hot air, and the harmful gas is compressed for preparing for harmful gas recovery in the second step.

The invention relates to an air conditioning apparatus special for a unit-type photogravure press. The upper part of the air conditioning apparatus is provided with a hot air outlet, and the lower part of the air conditioning apparatus is provided with a cold air outlet. The apparatus has the advantages that: firstly, a precedent for the air conditioning apparatus special for the unit-type photogravure press is created; and the apparatus not only has a novel, unique, simple and practical structural design, but also can form cyclic utilization of energy sources together with the unit-type photogravure press, so the apparatus makes use of a heat source, simplifies the structure of a drying roller of the unit-type photogravure press and is beneficial to environment protection; and secondly, the apparatus not only meets the working temperature needed by the unit-type photogravure press, but also avoid constant-temperature design for a workshop of the entire unit-type photogravure press, thereby achieving the purposes of saving energy and saving expense.

The invention relates to equipment for automatically cleaning and drying a photogravure roller after printing. The technical problem to be solved is that the provided automatic cleaning machine is capable of rapidly cleaning and drying the photogravure roller and has the characteristics of high automation degree, convenience for use and environment friendlessness. The technical scheme provided bythe invention is as follows: the top-installed type automatic photogravure roller cleaning machine is characterized by comprising a box body type machine frame, a photogravure roller cleaning system,a water-saving circulation system, a photogravure roller transmission system and a host machine, wherein the box body type machine frame is provided with an empty cavity; the photogravure roller cleaning system is installed in the empty cavity; the photogravure roller transmission system is installed on the machine frame; the host machine is used for controlling the photogravure roller cleaning system, the photogravure roller transmission system and the water-saving circulation system; and the empty cavity is upwardly opened.