CN115848039A - Printing processing system of special moire gradual change type pattern - Google Patents
Printing processing system of special moire gradual change type pattern Download PDFInfo
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- 238000007639 printing Methods 0.000 title claims abstract description 63
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- 238000004458 analytical method Methods 0.000 claims abstract description 7
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- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 239000003086 colorant Substances 0.000 claims description 11
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- 238000004043 dyeing Methods 0.000 abstract description 2
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Abstract
The invention relates to the technical field of textile printing and dyeing, in particular to a printing processing system of special moire gradual change type patterns, which comprises a processing terminal, wherein the processing terminal is connected with input equipment, a net making machine, a proofing machine and a printing machine, and when the printing processing system of the special moire gradual change type patterns is used, the printing processing system comprises the following steps: the method comprises the following steps: receiving pattern pictures for sample draft analysis; step two: preparing a film; step three: performing color imitation and proofing; step four: manufacturing a net; step five: the printing can greatly improve the efficiency of color separation manuscript tracing and the process accuracy, and effectively reduce the problem of poor overall style effect of the pattern caused by improper detail processing.
Description
Technical Field
The invention relates to the technical field of textile printing and dyeing, in particular to a printing processing system for special moire gradual change type patterns.
Background
The special moire gradual-change type pattern printing is excellent in the aspects of single pattern and color and poor expression degree of color block printing patterns, and overcomes the defects of time consumption, single method, complexity, poor pattern style reducibility and the like of the traditional gradual-change printing pattern treatment. The printing process has the advantages of high cost performance, short processing flow, good gradual change effect and high reduction degree, simultaneously has the advantages of high yield and low cost in the production process, has the outstanding characteristics of non-reproducibility and individual fashion of finished products, and has wide development prospect.
Printing has been relatively mature from birth to the present. However, in the industry at present, the process flow of the pattern treatment process is still relatively complicated, and the pattern style is not good. The digital printing has good fine reduction degree, but the cost is too high, and the processing yield efficiency is lower. The traditional rotary screen printing has high yield, but the pattern reduction degree is low, the style is single, and the pollution is serious. Different printing modes have respective advantages and disadvantages, how to survive in environmental protection pressure and economic crisis, break through innovation under the condition of the existing printing mode, and whether can stand in Taishan mountain in the same industry or not, and the core competitiveness of Changqing.
The moire gradual change pattern is a gradual change effect realized by density and size change of pixel points, the rotary screen printing is developed as a traditional printing technology for years, the advantages are outstanding but limited, the general defects of the rotary screen printing are overcome, the printing effect of the digital printing can be realized, the printing process can be simplified on the basis of the traditional printing process, and the color separation and draft tracing processing is started.
Therefore, it is urgently needed to develop a gradual pattern processing method with high productivity, fashionable and changeable pattern style and high reducibility.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: overcomes the defects of the prior art and provides a printing processing system with special moire gradual change type patterns.
The technical scheme adopted by the invention for solving the technical problem is as follows: the printing processing system for the special moire gradual change type patterns comprises a processing terminal, wherein the processing terminal is connected with input equipment, a net making machine, a proofing machine and a printing machine, and when the printing processing system for the special moire gradual change type patterns is used, the printing processing system comprises the following steps:
the method comprises the following steps: receiving pattern pictures for sample draft analysis;
step two: preparing a film;
step three: color imitation proofing;
step four: net making;
step five: and (7) printing.
And importing a scanning piece or an electronic draft based on the pattern picture into a processing terminal, and identifying and storing the pattern size, the color register number, the color register sequence, the meshes, the lines and the point fineness after the processing terminal receives the pattern picture.
In the first step, the processing terminal receives the pattern pictures and carries out chromatography sequencing according to the principle that the pattern pictures are firstly dark and then light, are firstly small and then large, and are firstly printed with lines and then printed with color blocks.
The second step comprises the following substeps:
2-1: tracing the manuscript;
2-2: color pressing is carried out among all color registering;
2-3: hanging a net;
2-4: and outputting the monochrome draft to generate the film.
The step 2-1 comprises the following substeps:
2-1-1, processing the flower-shaped picture based on Photoshop software;
2-1-2, comparing the difference degree of the processed picture with the corresponding original picture, returning to the step 2-1-1 to process the processed picture again if the difference degree is more than 10%, otherwise entering 2-1-3;
2-1-3: and filling the gradient depth with a painting brush on the drawing gradient effect of the processed picture, and auditing the similarity of the filled picture and the original picture.
The step 2-1-1 comprises the following substeps:
2-1-1-1: importing the pattern picture into Photoshop, and extracting the color in the picture through a channel mode of Photoshop; the reduction degree of the printed effect is high;
2-1-1-2: selecting colors with color tolerance values between 37 and 156 through a color range;
2-1-1-3: selecting a special color mode based on the image layer to realize color separation;
2-1-1-4: the color effect is checked by color superposition.
In the step 2-1-3, if the similarity between the filled picture and the original picture is smaller than the similarity, the step 2-2 is carried out, otherwise, the step 2-1-1 is returned.
And the processing terminal in the third step is connected with a proofing machine, and the film sheet is guided into the proofing machine for automatic proofing.
And in the fourth step, the processing terminal is connected with a screen making machine, and the black and white draft is poured into the screen making machine for screen making.
And step five, printing by using a printing machine.
Compared with the prior art, the invention has the following beneficial effects:
1) The color separation manuscript-tracing processing method has short flow, can greatly improve the efficiency and the process accuracy of color separation manuscript-tracing by performing pattern processing on the moire rotary screen printing, and reduces the waste of personnel and time cost;
(2) Compared with the traditional rotary screen printing, the method utilizes Photoshop and AT2000 software to perform draft writing, the draft writing is close to the style requirement of the original pattern to the maximum extent, the method is simple, the working efficiency is high, and the problem that the overall style effect of the pattern is poor due to improper detail processing can be effectively reduced;
(3) The pattern gradual change effect processed by the invention is soft and natural, and has the printing effect of digital printing. And the rotary screen printing is adopted for printing, compared with digital printing, the rotary screen printing has the advantages of low cost, high speed, high yield and unique pattern style.
Detailed Description
The following further describes embodiments of the present invention:
examples
The pattern gradual change effect is reduced by the arrangement of the holes of the rotary screen and the printing size and density of pattern points. The rotary screen printing can be called as a pattern formed by mud dot elements, the principle of the rotary screen printing is to reflect the gradual change gradation effect in the pattern through the size and density of mud dots, and usually, the pattern has large circulation and large color matching number. Therefore, the line-drawing part is a solid line after the traditional method is used for overlapping and expanding, the pattern effect is influenced, and the single decoration takes a long time. The method can effectively improve the problems of the third color and white left of the traditional rotary screen printing.
The printing processing system for the special moire gradual change type patterns comprises a processing terminal, wherein the processing terminal is connected with input equipment (such as a mouse, a keyboard, a scanner and the like), a net making machine, a proofing machine and a printing machine, and when the printing processing system for the special moire gradual change type patterns is used, the printing processing system is based on the following steps:
the method comprises the following steps: the processing terminal receives the pattern picture and analyzes the sample draft; the analysis of the sample manuscript directly affects the speed and quality of the subsequent manuscript drawing. Correct analysis has the effect of making a draft later with half the effort. However, if the analysis is wrong, the operation speed is affected, and irrecoverable errors can also occur. Great care must be taken in the analysis of the print. The processing terminal stores parameter information corresponding to different pattern information in advance, and the basic information of the received pattern of the processing terminal is automatically matched with corresponding parameters, for example: determining a corresponding number of chromatography prints based on color composition in the pattern picture; after the color is determined, determining a manuscript tracing mode based on a tracing of the pattern picture; and determining the minimum flower-back based on the pattern flower-back continuous-sunning mode in the picture, and the like.
Specifically, after the processing terminal receives pattern picture scanning or electronic manuscripts, basic information such as pattern size, color register number, color register sequence, meshes, lines, point fineness and the like is automatically identified and stored, so that a pattern auditor can further audit according to matching information, if a problem exists, basic information can be timely changed, and if no problem exists, the next step is carried out.
In the first step, the pattern image is imported into a processing terminal based on a pattern image scanning piece or an electronic draft, and the processing terminal receives the pattern images and carries out chromatography sequencing according to the principle that the pattern images are firstly dark and then light, are firstly small and then large, and are firstly printed with lines and then printed with color blocks. The production of the third color and the blank spots of the finished product is avoided, and the color register sequence can be artificially modified in the process to ensure the matching production.
Besides, the warp and weft directions can be distinguished by observing the cloth silk: generally, the warp threads are dense, and the weft threads are sparse; the warp elasticity is small and the weft elasticity is large. Whether the manufacturer prints with cylinder or flat screen and with which dye can be determined based on the size of the rosette. Typically the cylinder size is 640mm, so if circular screen printing is used, the print-back size must be a multiple of 640 mm. The flat wire does not have much requirements on the size. The degree of bleeding varies from dye to dye. Generally, the permeability of the active and dispersed particles is relatively high, while the permeability of the coating is relatively low.
For selection of cylinder meshes, 135 meshes with large pulp output are selected for large-area color blocks, 155/165/195 meshes with dense meshes are selected for fine lines, and 125/125V with different arrangement effects is selected for gradual pattern. The printing is respectively added with active thickening agent TF-85A according to the dye type: 1-2g/L, pigment printing thickener: 1-2g/L.
And for the large-area color blocks and the fine lines, judging according to the size of the flower, and judging that the area with the overall size of the flower larger than 15cm and 15cm is a large-area color block, or else judging that the area is a small-area color block, wherein 125 meshes can be selected.
Step two: preparing a film;
the second step comprises the following substeps:
2-1: tracing the manuscript; typically, the swatches are scanned into the computer by a scanner. The cloth sample is too large, such as some bed scrims and the like, and the precision is high, the cloth sample can be shot and input into a computer through a digital camera, the scanning input is usually 300 lines for scanning, and the scanning precision can be adjusted correspondingly according to requirements. Step 2-1 comprises the following substeps:
2-1-1: processing the flower-shaped picture based on Photoshop software;
the step 2-1-1 comprises the following substeps:
2-1-1-1: introducing the pattern picture into Photoshop, and extracting the color in the picture through a channel mode of Photoshop; so that the printed effect has high reduction degree.
2-1-1-2: selecting colors with color tolerance values between 37 and 156 through a color range;
2-1-1-3: selecting a spot color mode based on the image layer to highlight each color and realize color separation;
2-1-1-4: the color effect is checked by color superposition.
In the application, the pattern image is converted into a CMYK mode, and the image processing is carried out by utilizing four channels of cyan, magenta, yellow and black which are exclusive to CMYK. And selecting the first set of colors by using the color range, determining a selected area by adjusting the tolerance value of the colors, and storing each set of colors after processing. The method can not only rapidly process the image, but also restore the original appearance of the image to the maximum extent.
2-1-2, comparing the difference degree of the processed picture with the corresponding original picture, returning to the step 2-1-1 to process the processed picture again if the difference degree is more than 10%, otherwise entering 2-1-3;
2-1-3: importing the processed picture into AT2000, filling the gradient depth based on an AT2000 painting brush on the gradient drawing effect, checking the similarity between the filled picture and the original picture, entering the next step if the similarity is less than 10%, and returning to the step 2-1-1 if the similarity is not less than 10%;
when importing the processed picture into AT2000 for manuscript writing: general pattern 300 line pixel draft: the diameter of the thin film is 3 pixels; 4 minimum pixel points are clicked; the minimum light color is 7-8 pixels. Fine patterns such as geometry can be written with 600 lines: the diameter of the thin film is as thin as 5 pixel points; the minimum 7 pixel points are clicked; the light color is a minimum of 14 pixels.
If the lines are below the No. 7 lines, the dots are divided into fine patterns with minimum dots below 7 pixels, otherwise, the fine patterns are general patterns, except for color register with moire gradual change effect, and the standard is that the dot is not smaller than the No. 3 pixel point according to moire mud dot spray painting.
2-2: color pressing is carried out among all color registering; in order to prevent the white-out phenomenon in the printing process, the colors of all sets of colors need to be well pressed in advance (also called compound colors or lines). The magnitude of the color press is generally about 3 pixels per 300 lines, and the color press process tends to expand the dots from light color to dark color. And automatically identifying the line borrowing number according to the effect of each layer when line borrowing is carried out in the moire pattern type, and prompting a line borrowing method and a using tool when the layers are selected.
The line borrowing processing takes 2 chromatic cases as an example, an original image is copied firstly, a No. 1 color single-color draft a is generated, the original image is returned, no. 2 color is overlapped and expanded to No. 1 color for 8 lines, a No. 2 color single-color draft b is generated, the original image layer is returned again, a No. 2 color single-color draft b1 without line borrowing is generated, the newly-built image layer is x1, all colors are selected on the b1 by using a selection area and are filled with red on the x1, then, a protection color is selected to be red, all colors of a b layer are selected by using a selection area tool, green is filled on the x1 by using a circular tool, and a green part is a borrowed line part of the overlapping and expanding. All green parts are selected by the magic stick, spray gun tools (the size of mud points is 3-4, the density is 3-4) are selected, and the mud point effect is integrally sprayed on the layer b, so that the time is saved, and the integral effect of the flower type cannot be influenced. The system matches the images and provides template line borrowing effects for reference.
2-3: hanging a net;
the net hanging density is as follows: (LPI) number of wires per inch in horizontal or vertical direction, i.e. number of net wires hanging.
The angle of the hanging net: the direction of the net lines is arranged to form an included angle with the warp direction. The relationship between the mesh number, the net hanging density and the net hanging angle is as follows:
| number of meshes | Density of hanging net | Angle of hanging net |
| 125 mesh screen | 20 threads/inch to 45 threads/inch | Maximum upper limit of 15 ° |
| 155 mesh screen | 40 threads/inch to 50 threads/inch | Maximum upper limit of 65.5 ° |
| 165-195 mesh | 45-60 threads/inch | Maximum upper limit of 29 ° |
By processing the image in AT2000, the moire pattern uses the following process: pressing a light-color solid block under the moire color, wherein the moire area is smaller than 2 lines of the solid block area, if a dark-color sub-image is arranged on the light-color solid block and the light color is reliable, the sub-image area is smaller than 4-5 lines of the solid block area, the N net hanging parameter (43/53)/(45/53) and the standard net (43/75)/(45/75) are adopted. Screening the layered black and white draft picture, wherein the screening is 125 meshes, and the screening density is as follows: 20 lines/inch-45 lines/inch, screen angle: the maximum upper limit is 15 °.
2-4: outputting a single-color draft to generate a film;
a monochrome draft is also a black and white draft. After the color draft is drawn, each color is taken out and stored as a single-color draft, and the black and white draft is output through an output device (such as a laser photocopier). When outputting a single-color manuscript, attention needs to be paid to color pressing processing, and color superposition in AT2000 is utilized.
After the patterns are drawn, careful examination is required to prevent wrong or missed drawings. Once a black-and-white draft is output, the draft cannot be easily modified, and therefore errors in the draft cause irreparable losses in the print. The checking method comprises the following steps: all the single-color documents can be merged together through a multi-layer operation and then merged as is at the lowest layer. And respectively previewing each layer for layer-by-layer inspection.
And after the examination is correct, the black and white draft can be output through corresponding output equipment. If a conventional photosensitive screen is used, the film can be discharged by a laser printer. The net is made by laser or ink-jet or wax-spraying, and can be directly output by net-making machine. And the film is connected with a sample film machine system into a whole to generate a film.
Step three: performing color imitation and proofing; and the processing terminal is connected with a proofing machine, the film is guided into the proofing machine, and parameters such as matched proofing scraper pressure, magnetic rod number, magnetic force, color paste viscosity, cloth type, proofing process, proofing start and stop time, proofing number, dye combination, dye concentration and the like are set according to basic data such as order customer habits, light sources, points, number of copies, organization specification, whiteness, fluorescence, processing types, color register number, pattern type, color register standard, finishing mode, combination and the like, so that proofing is carried out.
Step four: manufacturing a net; the processing terminal is connected with the screen making machine, and black and white manuscripts are guided into the screen making machine to be processed through the processes of cylinder selection → cylinder cleaning → photosensitive glue application → exposure → development.
Step five: and (7) printing. And (3) printing by using a Megany rotary screen printing machine, wherein the printing machine has the functions of brushing dust absorption, E + L weft straightening, and printing patterns on the fabric through the prepared rotary screen.
Claims (10)
1. The printing processing system of the special moire gradual change type flower is characterized by comprising a processing terminal, wherein the processing terminal is connected with an input device, a net making machine, a proofing machine and a printing machine, and when the printing processing system of the special moire gradual change type flower is used, the printing processing system comprises the following steps:
the method comprises the following steps: receiving pattern pictures for sample draft analysis;
step two: preparing a film;
step three: performing color imitation and proofing;
step four: manufacturing a net;
step five: and (7) printing.
2. The printing processing system of a special moire gradual change type pattern according to claim 1, wherein in the first step, a processing terminal is imported based on a pattern picture scanning piece or an electronic draft, and the processing terminal identifies and stores the pattern size, the color register number, the color register sequence, the mesh, the lines and the dot fineness after receiving the pattern picture.
3. The printing processing system with the special moire gradual change type patterns according to claim 2, wherein in the first step, the processing terminal receives pattern pictures and carries out color register sequencing according to the principle that the pattern pictures are firstly dark and then light, then small and then large, and then lines are printed and then color blocks are printed.
4. The printing processing system for special moire gradient pattern-like patterns according to claim 1, wherein said second step comprises the following sub-steps:
2-1: tracing the manuscript;
2-2: color pressing is carried out among all color registering;
2-3: hanging a net;
2-4: and outputting the monochrome draft to generate the film.
5. Printing processing system according to claim 4, characterized in that said step 2-1 comprises the following sub-steps:
2-1-1, processing the flower-shaped picture based on Photoshop software;
2-1-2, comparing the difference degree of the processed picture with the corresponding original picture, returning to the step 2-1-1 to process the processed picture again if the difference degree is more than 10%, otherwise entering 2-1-3;
2-1-3: and filling the gradient depth with a painting brush on the drawing gradient effect of the processed picture, and auditing the similarity of the filled picture and the original picture.
6. Printing processing system according to claim 5, characterized in that said step 2-1-1 comprises the following sub-steps:
2-1-1-1: introducing the pattern picture into Photoshop, and extracting the color in the picture through a channel mode of Photoshop;
2-1-1-2: selecting colors with color tolerance values between 37 and 156 through a color range;
2-1-1-3: selecting a special color mode based on the image layer to realize color separation;
2-1-1-4: the dichroic effect was checked by color superimposition.
7. The printing processing system with special moire gradient pattern-like according to claim 4, wherein in said step 2-1-3, if the similarity between the filled picture and the original picture is less than said, then go to step 2-2, otherwise go back to step 2-1-1.
8. The printing processing system with the special moire gradual-change type patterns according to claim 1, wherein the processing terminal in the third step is connected with a proofing machine, and a film sheet is guided into the proofing machine for automatic proofing.
9. The printing processing system with the special moire gradual change type patterns according to claim 1, wherein in the fourth step, the processing terminal is connected with a screen making machine, and black and white draft is poured into the screen making machine for screen making.
10. The printing processing system for the special moire gradual change type patterns according to claim 1, wherein a printing machine is used for printing processing in the fifth step.
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| WO2022095340A1 (en) * | 2020-11-09 | 2022-05-12 | 长胜纺织科技发展(上海)有限公司 | Method for preventing moiré stripes during transfer dyeing of twill |
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2022
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1475860A (en) * | 2002-04-23 | 2004-02-18 | ��Τ����˹ | Colour dichromic method and its printed product |
| CN104960348A (en) * | 2015-06-09 | 2015-10-07 | 张为海 | Digital printing and designing integrated process |
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