31results about How to "Improve color matching efficiency" patented technology

The invention relates to the field of a printing technology and particularly relates to an offset printing ink color matching method based on a least square support vector machine. The offset printing ink color matching method comprises the following steps of: sampling each foundation ink according to different concentration gradients, mixing foundation inks with m concentration ratios selected within a (1-100)% range of the concentration gradients with a reducer, and then measuring an XYZ value corresponding to each standard color sample obtained by sampling; obtaining an XYZ value of a target sample to be matched, and selecting N inks for color matching, so as to obtain m*N XYZ values and corresponding concentration ratio training sample data; training an LS-SVM (Least Square-Support Vector Machine) function model, and establishing relation of the XYZ values and an ink matching formula, so as to convert the XYZ values into the ink concentration ratios; and inputting the XYZ value of the target sample to be matched into the trained LS-SVM function model, so as to obtain the corresponding ink formula through calculation. With the adoption of the offset printing ink color matching method provided by the invention, the precision requirement on a foundation ink database is small, the color matching is simple and convenient and reliable, and the efficiency is high.

The invention relates to a spot-color ink color matching method based on particle swarm optimization (PSO). According to the traditional method, spot-color ink color matching can not be precisely realized. The method disclosed by the invention comprises the following steps: calibrating and coloring; solving a correction factor with a polynomial fitting method; then, initializing a PSO algorithm parameter; randomly generating an initial group in a feasible solution space; calculating the fitness value of each individual; revising the position of a particle individual; and finally, detecting a termination condition. With the method, the color matching precision is more accurate, and the color matching efficiency is greatly improved. Spectral distributions between a color matching sample and a standard sample are very close, and metamerism isomerism is explained to be low.

This invention discloses a color wheel used in arranging colors including multiple disks and a fixed shaft, in which, the coaxial disks can rotate around the fixed shaft through the center of a circle, the fixed shaft limits the axial movement of the coaxial disks, every two disks with the same diameter belong to a group, and the group with the largest diameter is at the bottom and the one with the smallest diameter is at the top while others are arranged orderly, colors are arranged at the edges of the disks in a color ring state and the color ring of a same group is the same and the color ring of the upper disk in a same group removes the distant color part to become a gear state.

The invention relates to the technical field of feed liquid, and discloses a dye color matching device capable of automatically changing the discharge amount and replacing a material receiver. The device comprises a shell, wherein a material bottle is fixedly connected to the interior of the shell; the rotating frame rotates to enable a first gear to intermittently rotate by 45 degrees; a rotatingdisc synchronously rotates and drives a stop lever group to rotate, thus providing a power source for subsequent pushing operation. The stop lever group rotates to enable a pushing rod to move downwards gradually and then move upwards smoothly, so that the discharge amount of the feed liquid is automatically changed, under the condition that a diluent is equal in amount, mixing with different ratios is performed to achieve optimal color matching conveniently, chromatic aberration problems caused by errors caused by manual weighing and material liquid transfer between cup bodies are avoided, and the color matching efficiency is effectively increased. A sector gear rotates to enable a third gear to rotate intermittently, and a gear ring plate rotates synchronously to complete automatic replacement of the material receiver used for receiving materials, and therefore the device is high in automation degree, color matching is facilitated, and therefore dye of different proportions can be obtained.

The invention discloses a spot color ink amount and color determination method capable of minimizing color difference. The method comprises the following steps: detecting XYZ values of the two color samples with different ink layer thicknesses, and establishing a linear relation function among the X value, the Y value, the Z value and the ink layer thicknesses of the color samples; establishing arelation function among the L * value, the a * value, the b * value and the ink layer thickness; establishing a relation function between the color difference between the color sample and the target color and the ink layer thickness, solving a minimum color difference value and the corresponding ink layer thickness within an ink layer thickness range allowed by a printing process, and when the minimum color difference value is smaller than or equal to an allowed value, taking the sum of the ink layer thickness and the chromatic value corresponding to the minimum color difference as an ink quantity reference and a color reference of a pass sheet to control printing production, otherwise, correcting a spot color formula. The problem that the color matching efficiency is low due to the fact that whether the ink color meets the target requirement or not is judged only according to the proofing color under the specific ink layer thickness condition is solved, the color matching requirementcan be quickly met by combination of adjusting of the ink layer thickness an adjusting of the formula, and the color matching efficiency is improved.

The embodiment of the invention discloses a lighting device color matching method and device, and a storage medium. The method comprises steps of responding to a target color disk mode set by a user in a plurality of preset color disk modes, and obtaining at least one initial color point according to a preset color point selection strategy of the target color disk mode; a color disc being generated according to the at least one initial color point, the color disc comprising a plurality of color points, and each color point in a plurality of color points corresponds to one color; a plurality of color points in the color disc are used for color matching of the lighting device. According to the method, any initial color point is obtained, the color disc comprising multiple colors is generated according to the initial color point, the colors are directly obtained through the color disc so as to conduct color matching on the lighting devices, color parameters in each lighting device do not need to be independently adjusted, accurate regulation and control over color matching of the lighting devices are achieved, and color matching can be conducted on the multiple lighting devices at the same time, and color matching efficiency of the lighting devices is improved.

The invention discloses a self-spinning adjusting frame for color matching of textile clothes. The self-spinning adjusting frame is characterized by comprising an electric control device, a self-spinning adjusting frame body and a color matching slanting device, wherein the color matching slanting device is mounted on the self-spinning adjusting frame body; the self-spinning adjusting frame and the color matching slanting device are connected with the electric control device; the electric control device comprises a movable manipulation box, a sensor, a limiting brake disc, a motor speed reducing device, an outer chuck and an angle pointer; the self-spinning adjusting frame body is provided with a lateral supporting frame, a rotary transverse beam and a fixed hanging support; the limiting brake disc is provided with a reversed limiting shaft and a brake pad disc. According to the self-spinning adjusting frame disclosed by the invention, a sample placed on the color matching slanting device can be positioned and rotated for 0 to 360 degrees and an optimal color matching angle is obtained; the self-spinning adjusting frame has good whole stability, is safe and convenient to use and issuitable for being popularized and applied to color matching of textile clothes materials and matching of color matching lamp boxes.

A color matching device for a melt-spun color silk toner comprises a rack which is provided with large and small rack platforms; a toner conveying mechanism fixed to the large rack platform and extending to the position below the large rack platform; a toner high-level bin connected with the upper side of the toner conveying mechanism in a matched mode and communicating with the toner conveying mechanism; a high-level bin powder guiding mechanism connected with the toner high-level bin and communicating with a lower bin chamber; a tone high-level bin negative pressure generating mechanism arranged on a floor and connected with a suction solenoid valve; a toner extraction mechanism arranged on the small rack platform and connected with the lower part of the toner conveying mechanism; a toner extraction control mechanism connected with the toner extraction mechanism; and a color matching barrel conveying mechanism connected with the lower part of the front side of the rack; and a color matching barrel weighing mechanism arranged on the color matching barrel conveying mechanism. The upper part of the toner high-level bin is provided with a filter screen, and the toner high-level bin is divided into upper and lower bin chambers. The color matching efficiency is improved, and the operation intensity is reduced; the metering accuracy is ensured; the environmental cleaning is ensured;and the structure is compact.

The invention discloses a three-dimensional coordinate color developing rule and relates to the technical field of color measuring and matching. The three-dimensional coordinate color developing rule comprises three color rules and a rule seat, the rule seat is provided with three color rule holes which are shaped in three-dimensional coordinates perpendicular to one another, the X-axis color rule, the Y-axis color rule and the Z-axis color rule are respectively arranged in the three color rule holes and are respectively provided with color darkness, brightness, luminance and digital marks. Further, the rule seat is an L-shaped column, and fastening screws are arranged on one side of the rule holes and used for fastening the color rules when in need. Elastic clips are arranged in the color rule holes of the rule seat and used for pressing the color rules. In the X-axis color rule, the Y-axis color rule and the Z-axis color rule, the X-axis color rule and the Y-axis color rule are plate rules, and the cross section of the Z-axis color rule is shaped in right triangle. The three color rule holes are arranged in a staggered manner. The three-dimensional coordinate color developing rule has the advantages that the three-dimensional coordinate color developing rule can visually display brightness, darkness and luminance measured or of color to be matched, and can specifically calculate of added pigment amount according to the coordinate values, and accordingly, color matching efficiency can be improved.