99 results about "Colour difference" patented technology

Electromobility components with a color difference ΔE <20 from the L*a*b* coordinates to a color number beginning with "2" of the RAL color chart, containing polymer compositions based on at least one polyamide and a colorant with a mean particle size d50 to be determined according to ISO 13320 by laser diffractometry in the range of 1 to 12 µm, containing 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in the ratio of 1 : 1 : 0.8 - 1.5 to 1 : 1.5 : 0.8 - 1.5, wherein in the polymer compositions there are 0.01 to 5 mass parts per 100 mass parts of at least one polyamide. Colorants are present.

The invention provides an intelligent paint make-up system capable of accurately identifying and matching the color of aged vehicle paint and a paint make-up method thereof, and the system comprises a color identification module which is used for extracting the color features of a to-be-repaired paint surface, thereby identifying the color of the to-be-repaired paint surface, and obtaining an image of the to-be-repaired paint surface; the data processing module is used for performing multi-angle spectral decomposition on the to-be-repaired paint surface image and predicting a paint surface fading curve so as to obtain a matching weight of color adjustment; the automatic paint mixing module comprises a precise proportioning pump unit and a multi-shaft stirring device and is used for mixing pigments according to the proportioning weight of color adjustment; and the closed-loop feedback module comprises a real-time chromatic aberration detection unit and is used for correcting errors of the pigments in real time and finally outputting the refinishing paint consistent with the spectral data of the paint surface to be repaired.

The invention discloses an intelligent printing system based on AI color management, which relates to the technical field of printing and comprises an image verification module, a parameter calibration module, a chromatic aberration compensation module, a monitoring index module, a process scheme module, a quality evaluation module and a cost module. The system has the advantages that the image verification module compares an original recorded image with a printing image, accurately analyzes a data difference value and timely finds potential problems, and the chromatic aberration compensation module generates chromatic aberration printing schemes for different pigments and paper, so that the chromatic aberration problem is reduced to the greatest extent, the printing color is brighter and more accurate, and the visual effect is enhanced. And meanwhile, a quality compensation scheme unit is established, the response speed of the printing machine is increased, it is ensured that the printing result is closer to the original design intention, the characteristic extraction function in a traditional printing mode is achieved, the more characteristic and personalized printing effect is provided for a user, and the traditional printing technology can continue to develop while the special requirements of different clients are met.

A recording apparatus controls a color difference caused by a degree of foaming of foaming particles in a case of forming a recording product including a convex structure that is formed by causing the foaming particles to foam, by determining application amounts of colored liquids so that a larger amount is applied to a region that is caused to foam in a larger degree even when the colored liquids indicate the same color.

The invention discloses color difference detection equipment and process for production of high-wear-resistance regenerated polyester dyed cloth, and relates to the technical field of color difference detection equipment. Comprising a rack main body, a control main body is arranged at the front end of the rack main body, the rack main body is provided with a mounting mechanism for color difference detection for high-wear-resistance regenerated polyester dyed cloth production, and the mounting mechanism comprises a detection assembly and a control assembly, according to the invention, a red, green and blue three-primary-color narrow-band optical filter is adopted, and a second bevel gear and a worm connected with the second bevel gear are driven to rotate through meshing; the worm is meshed with a worm gear on the outer wall of the vertical shaft to drive the vertical shaft to rotate, and then the connecting rod drives the three sets of mounting frames to rotate synchronously, so that optical filter switching is achieved, the cloth cover chromatic aberration performance in different illumination environments can be simulated, the detection result is more accurate and comprehensive, the detection error caused by single illumination is reduced, and the detection efficiency is improved. And the comprehensiveness and the accuracy of chromatic aberration detection are improved.

The invention relates to a method for eliminating color difference type defects of a stainless steel cold-rolled sheet, which comprises the following steps of: controlling the finish rolling temperature in finish rolling of a plate blank and the coiling temperature after finish rolling, so that the thickness of an oxide layer on the surface of the plate blank is within 8-12 microns; in the cold rolling process, the roller roughness of a last roller is adjusted according to the color difference value of the plate blank so as to reduce the edge color difference and the center color difference of the plate blank; and the annealing process after cold rolling is controlled so that the thickness fluctuation of the Cr2O3 film can be smaller than or equal to 5%. By means of the method for eliminating the color difference defects, the color difference defect rate of the 304 stainless steel cold-rolled sheet is reduced to 0.4% from 2.8%, the overall color difference is smaller than or equal to 0.7, the corrosion resistance of a passive film is improved by 40% (salt spray test is larger than or equal to 96 h), and the international leading level is achieved; and the requirement of a high-quality surface is met.

To provide an improved structure for chamfered flooring materials that reduces color differences in grooves of chamfered joints after joining flooring materials of any color system, or prevents color difference problems from occurring and improves the appearance.SOLUTION: An improved structure of chamfered flooring materials comprises a chamfered flooring material 1 with a bottom layer 11 and a flooring material layer 2. A first joint 111 and a second joint 112 are provided on side edges of the bottom layer respectively. The first joint is connected with the second joint of the other chamfered flooring material, and the second joint is connected with the first joint of the other chamfered flooring material. The flooring material layer is formed on the bottom layer and has a chamfer 21 on both sides of the top respectively. The flooring material layer comprises a same-color layer 22 and a wear-resistant printing layer 23. The wear-resistant printing layer is formed on the same-color layer. The same-color layer is of a single color and is made of polyethylene terephthalate glycol or acrylonitrile butadiene styrene, with a thickness of 0.2 mm to 1 mm.SELECTED DRAWING: Figure 1

The utility model discloses a feeding device for cable sheath raw materials, including a mixing tank and an anti-color difference tank, wherein a first stirring component is arranged in the anti-color difference tank, and a discharging component is arranged at the bottom thereof, the feeding end of the discharging component is communicated with the anti-color difference tank, and the discharging end thereof is communicated with the feeding end of the extruder, the mixing tank is arranged above one side of the anti-color difference tank, and has a portion extending into the anti-color difference tank, and a second stirring component is arranged in the mixing tank. The utility model is a feeding device for cable sheath raw materials, wherein the mixed raw materials are continuously stirred by the first stirring component before entering the extruder, thereby preventing the raw materials and the masterbatch from being mixed unevenly; the mixed raw materials are actively fed into the extruder by the discharging component, thereby preventing the raw materials and the masterbatch from being mixed unevenly during feeding, and then the raw materials and the masterbatch are allowed to enter the extruder for hot melting in a uniformly mixed state, thereby ensuring the color consistency after extrusion.

The invention discloses a toning and repairing method for brick or stone cultural relics and application of the toning and repairing method, and relates to the technical field of cultural relic repairing. Comprising the following steps: preparing a plurality of color samples with different colors by adopting a shape repairing material, natural rock color and water, and forming a database according to a one-to-one correspondence relationship between color value parameters of each color sample and a formula; and calculating chromatic aberration between the to-be-repaired area and each color sample according to the database and obtaining the minimum chromatic aberration, and performing color matching and repairing on the to-be-repaired area according to the formula of the color sample corresponding to the minimum chromatic aberration. According to the method, the cultural relic repairing difficulty is greatly reduced, the professional knowledge requirement and the color sensitivity requirement for repairing personnel are both reduced, and available formulas with similar colors can be rapidly obtained. Besides, natural minerals are adopted as colored raw materials in the formula of the color sample, the stability is good, the binding capacity with surrounding raw stones is high, and on the basis that color coordination of a repaired area is guaranteed, damage to cultural relics caused by repeated repair is avoided.

This temperature-indicating label is provided with: a base material; an adhesive layer to be affixed to the surface of a living body; and a temperature-indicating ink layer that is positioned between the base material and the adhesive layer, and that is configured so as to change color in accordance with the temperature of the temperature-indicating ink layer. The stress at 20% stretching is 0.2 N / mm2 to 10.0 N / mm2. The thickness of the temperature-indicating ink layer is 1-9 µm. In a state in which the adhesive layer is affixed to a white plate, the color difference ΔE* ab in the L*a*b* color space between a first state in which the temperature-indicating ink layer exhibits a first color and a second state in which the temperature-indicating ink layer exhibits a second color different from the first color is greater than 10. The color change between the first color and the second color is visible via the base material.

The utility model discloses a temperature control color difference prevention plate stirrer for artificial stone plate production, which belongs to the technical field of artificial stone plate production equipment and comprises a water bath thermotank, a support, a material mixing tank, a stirring motor, a stirrer and a temperature regulation and control machine. The water bath constant-temperature box is communicated with the temperature regulation and control machine through a water circulation pipeline, the temperature regulation and control machine drives circulating water to flow in a circulation system formed by the water bath constant-temperature box, the water circulation pipeline and the temperature regulation and control machine through a water pump, and the circulating water is regulated and controlled to be in a constant-temperature state; a feeding pipe is arranged at the top of the mixing tank, and the stirring motor is arranged at the top of the feeding pipe and connected with the stirrer; and a discharge pipe is arranged at the bottom of the mixing tank. The temperature regulating and controlling machine is used for heating circulating water, the temperature in the material mixing tank can be effectively controlled within a preset range, and therefore color difference of plates is effectively prevented, the quality of the plates is ensured, particularly, the material mixing tank is arranged in the water bath constant temperature box, the material mixing tank is fully wrapped by water in the water bath constant temperature box, and the temperature control effect is better.

The utility model discloses an anti-settling water-based paint storage tank, belongs to the technical field of storage tanks, and solves the problems that water-based paint is stored in the storage tank for a long time or settles, so that obvious color difference of one barrel of paint is possibly caused by precipitation in finish paint, and the final coating effect is influenced. Comprising a tank body, a vertically-arranged vertical cylinder is arranged in the tank body, the outer ring of the vertical cylinder is communicated with a plurality of hard connecting cylinders located at all horizontal heights, and the hard connecting cylinders can be movably arranged relative to the vertical cylinder. Water-based paint is stored in the tank body through the feeding pipe, the valve is closed, and the water-based paint in the tank body is stirred up and down and is prevented from settling by intermittently supplying air to the air pump to enable air in the air pipe to flow, so that the soft connecting pipe expands to lift the hard connecting cylinder, the air pump stops flowing out of the air, the soft connecting pipe shrinks and the hard connecting cylinder falls. When discharging is needed, the outlet valve is opened, and the paint is discharged through the discharging pipe.

This invention discloses a PUR adhesive mixing process for edge banding, comprising: edge banding adhesive preparation, intelligent PUR adhesive dispensing machine system setting, high-precision color recognition sensor calibration, system setting confirmation, multi-system collaborative action construction, implementation of adhesive mixing ratio control, and adhesive application and edge banding detection. This invention integrates an edge banding machine adhesive application unit, a color recognition module, and an intelligent PUR adhesive dispensing machine system to jointly achieve the PUR adhesive mixing processing effect. It solves the problem of traditional single-color adhesive dispensing machines only supporting single adhesive output, and particularly addresses the issue of controlling the color difference between the adhesive line and the color of the edge banding board, meeting the processing requirements of gray and khaki colors, overcoming the problem of color difference control in edge banding of different colored boards, and creatively utilizing color mixing and adhesive mixing technology, greatly enriching the selectivity of edge banding processes.

To suppress a color difference due to a level of foaming when forming a recorded matter having a projection structure that is made by foaming a foaming particle.SOLUTION: A recording device determines an imparting amount of a colored liquid so that the colored liquid is more imparted to a region having a large foaming level than those with small levels even when a colored liquid plate indicates the same color.SELECTED DRAWING: Figure 8

This invention discloses a method for confirming color difference in coatings, comprising: circulating the paint to be tested in a paint pump for a first preset time; providing at least two sets of electrophoretic test plates, A and B, wherein set A includes at least three test plates A1, A2, and A3, and set B includes at least three test plates B1, B2, and B3; spraying A1, A2, A3, B1, B2, and B3 respectively; and baking A1, A2, A3, B1, B2, and B3 respectively in a topcoat baking oven. Film thickness tests were performed on A1, A2, and A3 to obtain the first film thickness parameters of the electrophoresis test plates in group A; color difference tests were performed on B1, B2, and B3 to obtain the first color difference variation parameters of the electrophoresis test plates in group B; based on the first film thickness parameters and the first color difference variation parameters, the first correspondence between the color difference and film thickness of the paint to be tested was calculated; based on the first correspondence, the first actual color difference parameters of the paint to be tested under the standard film thickness were calculated; and the first actual color difference parameters were compared with the range of the standard color difference parameters.

The utility model relates to the technical field of real stone paint color detection, in particular to a real stone paint color comparison detection device which comprises a mold making frame and a mold making plate. The upper part of the molding frame is a storage box body for placing the molding plate; a left mold frame and a right mold frame which are separated by a separation strip are arranged in the middle of the mold making frame; an excess material frame is arranged at the lower part of the molding frame; the storage box body is of a convex structure with a closed top, a hollow interior and a downward opening; when the molding frame is idle, the storage box body is turned over along with the molding frame, the opening of the storage box body faces upwards, and the molding plate is placed in the hollow structure of the storage box body. The detection device disclosed by the utility model is placed on a fiber cement board, then a real stone paint standard sample and a real stone paint to-be-detected sample are respectively added into the left mold frame and the right mold frame of the mold making frame, the mold making plate is used for scraping and compacting to be detected, and whether the produced real stone paint is a qualified product or not is determined by observing whether the real stone paint in the left mold frame and the right mold frame has color difference or not. By utilizing the detection device for comparing the colors of the real stone paint, the detection work of the colors of the real stone paint can be efficiently and accurately completed.

Disclosed are a method for determining a color difference component quantization parameter and a device using the method. Method for decoding an image can comprise the steps of: decoding a color difference component quantization parameter offset on the basis of size information of a transform unit; and calculating a color difference component quantization parameter index on the basis of the decoded color difference component quantization parameter offset. Therefore, the present invention enables effective quantization by applying different color difference component quantization parameters according to the size of the transform unit when executing the quantization.

The invention provides a middle frame, a manufacturing method thereof and electronic equipment, the middle frame can comprise a frame, the frame comprises at least one first material part and at least one second material part, the first material parts and the second material parts are connected at intervals to form the frame, and the manufacturing materials of the first material parts comprise fiber composite materials. The manufacturing materials of the second material part comprise an insulating material and pigment, and the color difference between the second material part and the first material part is smaller than a threshold value, so that the color difference between the second material part and the first material part is small, the second material part and the first material part are the same in color when seen by naked eyes, and the second material part and the first material part are difficult to distinguish visually; therefore, the overall aesthetic feeling of the frame is improved. Moreover, when the manufacturing material of the first material part comprises the fiber composite material, the fiber composite material has the characteristics of light weight and high strength, so that not only can the strength of the middle frame be improved, but also the weight of the middle frame can be reduced.

The utility model provides an improved structure of a chamfered floor. The improved structure comprises a bottom layer and a floor layer. The bottom layer side edge is provided with a first connecting part and a second connecting part, the first connecting part is used for being connected with the second connecting part of another chamfered floor, and the second connecting part is used for being connected with the first connecting part of another chamfered floor. The floor layer is arranged on the bottom layer, two or four side edges of the top of the floor layer are respectively provided with a chamfer, the floor layer comprises a same-color layer and a wear-resistant printing layer, and the wear-resistant printing layer is arranged on the same-color layer. By means of the structure, after floors of any color system are spliced, color difference can be reduced through the chamfered seam grooves, or the occurrence of the problem of different colors is reduced, and attractiveness cannot be affected.

The present invention discloses a color chasing method, device and equipment for an inkjet printer, which relates to the technical field of inkjet printing. The method respectively obtains a first linear color patch map of a target inkjet printer and a second linear color patch map of the inkjet printer to be color chased, then obtains a third linear color patch map according to the first linear color patch map and the second linear color patch map, and then obtains the color chasing curve of the inkjet printer to be color chased by using the first linear color patch map and the third linear color patch map. Compared with the technical means of manually and repeatedly debugging to obtain the color chasing curve of the inkjet printer to be color chased, the method of the present invention is simple and fast, does not need to rely on the color adjuster to repeatedly debug, can achieve a very small color difference in color chasing, and has a good color chasing effect.

This invention discloses a gradient metering standard color masterbatch and its application method, belonging to the field of plastic color matching technology. Addressing the problems of poor dispersibility of traditional color masterbatches, difficulty in adapting customized color masterbatches to matching parts with color differences, and serious pollution from pigment processing, this invention first prepares micro-volume color masterbatches with a diameter and length ≤1mm, enabling uniform dispersion with a single color addition of 0.5% or more. It also establishes a gradient metering color masterbatch library, setting the pigment content in 500g of color masterbatch according to a geometric progression, achieving a micro-color adjustment capability of 0.01g / 100kg. During color matching, a color masterbatch of corresponding concentration is selected based on the target pigment usage. The addition amount is accurately calculated using the formula: weight = target usage / concentration × 500, allowing for the mixing of multiple color masterbatches. This invention combines the flexible fine-tuning capability of pigments with the cleanliness and stability of color masterbatches, completely eliminating pigment pollution, eliminating shear force interference, significantly improving color consistency between complex components, and adapting to intelligent manufacturing.

This utility model relates to a fabric inspection table, including a support, a worktable mounted on the support, a lamp body for detecting fabric color, a first roller to keep the fabric always in contact with the worktable, a take-up roller, an unwinding roller, a leveling component for leveling the fabric on the worktable, and an intermittent device for intermittently moving the fabric. The intermittent device is mounted on the support, and its active end is connected to the unwinding roller. The first roller is mounted on both sides of the worktable and is tangent to the top surface of the worktable. The leveling component moves along the worktable. The light source of the lamp body faces the worktable. The take-up roller and the unwinding roller are respectively mounted on both sides of the support. This invention solves the problem that fabric inspection often involves moving the fabric at a constant speed using two sets of rollers, detecting color differences during the fabric's movement. However, the movement of the fabric makes it difficult for workers to accurately capture the location of color differences, leading to inaccurate observations. Furthermore, the fabric needs to be marked with cut sections and leveled during movement.

The invention discloses a vehicle body spraying method and a color difference control system, and the method comprises the steps: obtaining corresponding vehicle body color data when vehicle body spraying is carried out based on spraying parameters, and carrying out color difference analysis based on the vehicle body color data, and obtaining color difference abnormal index data; obtaining a color difference evaluation parameter corresponding to the color difference abnormal index data in response to the fact that the color difference abnormal index data reaches a color difference abnormal triggering threshold value; and based on preset spraying adjustment strategy data, target spraying adjustment data matched with the chromatic aberration evaluation parameters and used for adjusting the spraying parameters are determined. According to the method, the color difference defect can be efficiently and accurately detected and adjusted in the vehicle body spraying process, and the problems that the correction process is complex, the cost is high and the effect is not ideal due to correction after color difference forming are solved.

The invention discloses a pier column preformed hole flow state plugging method, and relates to the technical field of pier column preformed hole flow state plugging. According to the technical scheme, the method comprises the steps that S1, a horn mouth mold and a fixing tool of the horn mouth mold are manufactured; s2, the preformed hole is cleaned and wetted; s3, a horn mouth mold is installed; s4, designing a mixing proportion of a color mixing grouting material and manufacturing a color plate; s5, mixing a color mixing grouting material; s6, filling a color mixing grouting material; and S7, removing the mold, polishing and flattening, and maintaining. The method has the beneficial effects that the scheme can efficiently complete plugging of various preformed holes, compared with dry and hard mud jacking plugging, plugging by utilizing the fluidity of the color-mixing grouting material is more compact, the color-mixing grouting material has higher strength and micro-expansion characteristics, shrinkage cracks are effectively avoided, and by adding the white Portland cement for color mixing, the plugging effect is better. And the blocked part has no obvious color difference with the pier column, and is not easy to peel off and powder after being polished and flattened.

The present invention provides a low-tension overflow swing bucket structure and a dyeing machine with the swing bucket structure, wherein the swing bucket structure comprises a swing bucket body, a nozzle outer body is provided at one end of the swing bucket body, a nozzle device is provided in the nozzle outer body, a rotating bracket is provided at the bottom of the nozzle outer body to support the swing bucket body to make a circular motion at a certain angle, a cavity is provided at the top of the nozzle outer body, and the swing bucket body is divided into a horizontally downwardly extending inlet straight pipe section, a horizontally upwardly extending curved pipe section and a horizontally downwardly extending outlet section from near to far from the nozzle device. The dyeing machine solves the problems of color difference in the edge, fish scale print on the edge of the fabric, etc. caused by insufficient relaxation of the edge of the fabric or failure to unfold the edge of the fabric due to excessive tension during the operation of the dyeing machine.

Food contact materials with a color difference ΔE <20 from the L*a*b* coordinates to a color number starting with "1" of the RAL color chart according to the color model according to EN ISO 11664-4, as determined according to DIN 5033 (1979), based on compositions containing at least one polyester or polystyrene and a colorant consisting of at least one yellow methine dye or at least one yellow quinophthalone dye and at least one ethylene oxide-propylene oxide block copolymer with a central propylene oxide unit between two ethylene oxide units, a molar mass determined from the OH number to be determined according to DIN / ISO 4629, in the range of 5500 to 7500 g / mol, a mass fraction of ethylene oxide units in the range of 45 to 55 wt.% and a flocculation point to be determined according to EN 1890 method B in the range of 70°C to 85°C.

This invention relates to a method for color matching of architectural coatings based on particle swarm optimization (PSO) algorithm. The method includes the following steps: using a standard color swatch and a colorimeter, under the same light intensity, light angle, and sampling distance, calibrating the basic color of a display one by one; saving the architectural coating color designed using the calibrated display as a standard color and displaying the standard color on this display; adjusting to obtain multiple different standard colorant ratios; iteratively searching for the optimal standard colorant ratio using the PSO algorithm; and outputting the optimal standard colorant ratio. This invention eliminates the industry's reliance on manual experience in color matching, achieving controllable results for the final product without human intervention; making the experimental process highly directional, quickly obtaining satisfactory results with a small number of iterations and very few samples per iteration; achieving color matching results with much higher accuracy than manual color matching; and enabling large-scale application.

The present invention discloses a method, device and system for automatic coloring of ceramic tiles. The method detects ceramic tiles to obtain a first optical image of the ceramic tiles, queries a pre-established standard ceramic tile database based on the first optical image, and obtains the position coordinates and color number values ​​of the detected ceramic tiles with color difference defects; provides an encoder to capture the pulse signal of the production line where the detected ceramic tiles are located, and calculates in combination with the rotation ratio of the production line and the diameter of the rotating wheel to obtain the transmission speed of the detected ceramic tiles on the production line; substitutes the position coordinates and transmission speed data into a formula T=Y / V to obtain a delay control signal; drives a brush module to classify and color-mark the parts of the detected ceramic tiles with color difference defects based on the delay control signal and the color number value, and applies the automatic coloring method for ceramic tiles to an automatic coloring device for ceramic tiles, so that machines can replace manual coloring, liberate labor, avoid wrong coloring and missing coloring, and improve production efficiency.

The utility model discloses a color-changing leather IC (integrated circuit) card, which comprises two color-changing leather layers which are oppositely arranged, and a supporting layer and an electronic tag layer which are positioned between the two color-changing leather layers, under the triggering condition, the color-changing leather layer can be changed into a second color from a first color; the surface of the color-changing leather layer is coated with a first color developing layer, the depth of the first color is greater than the color depth of the first color developing layer, and the first color developing layer can be covered by the first color; the color of the first color developing layer and the second color have color difference, and when the surface is in the second color, the first color developing layer develops color. According to the utility model, the color of the surface layer is changed between the first color and the second color due to the triggering condition, so that the pattern on the first color developing layer is changed between macroscopic and invisible, the visual effect and the aesthetic degree of the card are improved, and the card has certain playability.