CN114960240A - Ink-jet printing method based on fabric aggregation state - Google Patents
Ink-jet printing method based on fabric aggregation state Download PDFInfo
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- CN114960240A CN114960240A CN202210471999.2A CN202210471999A CN114960240A CN 114960240 A CN114960240 A CN 114960240A CN 202210471999 A CN202210471999 A CN 202210471999A CN 114960240 A CN114960240 A CN 114960240A
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Images
Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/30—Ink jet printing
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/46—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing natural macromolecular substances or derivatives thereof
- D06P1/48—Derivatives of carbohydrates
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/64—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/673—Inorganic compounds
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- D06P1/6735—Salts or hydroxides of alkaline or alkaline-earth metals with anions different from those provided for in D06P1/67341
Abstract
The invention discloses an ink-jet printing method based on fabric aggregation state, belonging to the technical field of ink-jet printing methods, wherein the fabric to be printed is selected and padded by slurry; printing a plurality of scattered ink dots on the fabric, and measuring and observing the area and the form of the ink dots on the fabric; the screening matrixes with different shapes are designed through design software, the aggregation threshold matrixes with different shapes are designed from inside to outside to perform aggregation printing, the problem of poor image reducibility caused by excessive diffusion of ink on the fabric is effectively reduced, the original dots subjected to the dispersion printing are aggregated and printed according to a certain rule, the high-precision printing effect is realized, and the problems in the prior art are solved.
Description
Technical Field
The invention relates to an ink-jet printing method based on a fabric aggregation state, and belongs to the technical field of ink-jet printing methods.
Background
The ink-jet printing is a technology for actually carrying out ink-jet printing on a pattern on a fabric, and the ink-jet printing technology is a non-contact printing technology, and ink drops with fixed sizes are ejected by a system control nozzle and the nozzle moves, so that the ink drops fall on corresponding positions, and the controllability of the ink drops and the reducibility of the image are realized. The ink-jet printing technology has the advantages of cleanness, no pollution, small batch, customization and the like, is suitable for various materials, has strong universality, and is widely applied to textile printing processes in the textile field. Due to the difference in the interfaces of the printed materials, spreading and penetration of the ink on the interfaces are also different. The fabric is composed of a regular fiber structure, resulting in an interface with directional diffusion paths, resulting in a large difference in spreading and penetration behavior of the ink on the fabric as compared to the paper material. This results in a large difference between the actual inking area and the theoretical inking area, i.e. a large dot gain difference, which results in poor printing effect. To improve print quality, many researchers have treated fabrics by physicochemical modifications to increase the hydrophobicity of the fabric interface, thereby reducing the spreading of ink on the fabric.
Images with gray values greater than 256 levels are referred to as continuous images and are now seen as substantially continuous images. When the printer is used to completely reproduce an image, the head is required to eject 256 different sized dots to represent different gray levels. Because of the limitation of the nozzle technology, the nozzle of the printer can only spray ink drops or not spray ink, only a few high-grade ink-jet printers can spray ink drops with different sizes, and the requirement of printing cannot be met, so that the image reproduction technology which utilizes the visual characteristics of human eyes and the color generation characteristics of images, also called digital halftone technology, is an image reproduction technology which converts continuous images into binary images and realizes the reproduction of image color gradation. The image is composed of pixels with different gray scales, and the computer uses numerical values with different sizes to express the different gray scales. The gray value of each pixel is different, and even the same color has different shades. However, the conventional ink jet printer cannot eject dots with different sizes to represent different gray values, thereby resulting in poor reproducibility of the picture. Based on previous reports, different dots are printed in certain areas to restore different gray values as much as possible. As shown in fig. 1, the printed ink dots are printed in a predetermined area in a regularly-gathered manner, which is called dot-gathered printing; as shown in fig. 1, these dots may be printed randomly in a predetermined area, and this printing method is called scatter printing.
In the prior art, when pixels with different gray scales are printed, the pixels with different gray scales are represented by using different numbers of ink dots, and the ink dots are randomly sprayed in a specified area. The ink-jet printing substrate is mainly made of paper materials, and the dot gain is mainly designed by taking the paper materials as objects. Because the diffusivity of the ink on the fabric is far greater than that of the paper material, and the final effect of the ink on the fabric is greatly different from that of the paper material, the printing Color generation method does not conform to ICC (International Color Consortium) digital Color management specifications and cannot perform accurate and effective management, and meanwhile, the excessive diffusion of the ink causes the mutual contact between adjacent ink dots, thereby causing the gray level transition and causing the integral darkening of the image. Therefore, how to reduce the problem of poor image reducibility caused by excessive ink diffusion on the fabric becomes a technical problem which needs to be solved at present by gathering and printing dots which are originally printed in a dispersed manner according to a certain rule to realize high-precision printing.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide an ink-jet printing method based on the aggregation state of a fabric, which solves the problems in the prior art.
The invention relates to an ink-jet printing method based on fabric aggregation state, which comprises the following steps:
step 1: pretreatment of the fabric: selecting a fabric to be printed, and padding the fabric with the slurry;
step 2: printing dispersed ink dots: printing a plurality of scattered ink dots on the fabric, and measuring and observing the area and the form of the ink dots on the fabric;
and step 3: designing different shapes of aggregation state threshold matrices: designing screening matrixes with different shapes through design software I, and designing aggregation state threshold matrixes with different shapes from inside to outside according to the ink drop diffusion condition in the step 2;
and 4, step 4: screening treatment: designing a dispersed mesh point by using design software II, screening the gray gradient test strip by using the aggregation state threshold matrix designed in the step 3 and the designed dispersed mesh point, respectively printing on different materials, and measuring the mesh point expansion rate of the different materials;
and 5: image processing: inputting a color image in the first design software, carrying out color separation treatment, selecting proper mesh point shapes, screening angles and screening line numbers according to the step 3 to respectively process the images after color separation, and carrying out color combination on the processed images;
step 6: and printing the image processed in the step 5.
Further, in the step 1, sodium carbonate, urea and sodium alginate are added with water and stirred to prepare slurry, the prepared slurry is poured into a padder, then the cut cloth is subjected to padding treatment, and the padded cloth is taken out and dried.
Further, the step of designing the aggregation threshold matrices with different shapes in step 3 specifically includes the following steps: setting the size of the screening matrix as L multiplied by M and the screen line angle as theta, selecting the central position of the screening matrix as an initial point, designing different-shape aggregation state screen point threshold value matrixes according to the ink drop diffusion condition and the initial point from inside to outside, and mapping each pixel and the designed aggregation state threshold value matrixes to form different-shape screen points after color separation of the image.
Further, the material printed in step 4 includes a textile material and a paper material.
Further, the fabric in the step 1 comprises one or more of cotton, hemp, wool, silk, terylene, acrylon, chinlon, polypropylene fiber, spandex and regenerated cellulose fiber.
Further, the shape of the aggregation threshold value matrix in step 3 includes circle, ellipse, diamond, square, cross and concentric circle.
Further, in the step 4, the gray scale of the gray scale gradient test strip is changed to 0-100%.
Further, in the step 5, the resolution of the input color image is 200dpi-2400dpi, the screening angle is 0-90 degrees, and the number of screening lines is 50lpi-300 lpi.
Further, the first design software is matlab design software.
Further, the second design software is Adobe Photoshop software.
Compared with the prior art, the invention has the following beneficial effects:
the ink-jet printing method based on the aggregation state of the fabric has the following beneficial effects:
(1) spreading of the ink on the fabric can be reduced. The area enlargement rate is different due to the difference in printing modes. The maximum area expansion rate of the point-dispersed frequency-modulated printing mode on paper is 20%, the area expansion rate of the point-aggregated printing mode is much smaller, the maximum expansion rate of the point-aggregated elliptical screen dots is 10%, and the ratio is reduced by 10%; the expansion rate of ink on the cloth is obviously greater than that of paper, the area expansion rate of frequency modulation screen dots on the cloth reaches 40%, the expansion rate of elliptic screen dots printed by dot aggregation on the cloth is only 16%, and the area expansion rate is relatively reduced by 24%, so that the ink diffusion can be better reduced on the cloth by a printing mode of dot aggregation;
(2) the printing fineness of the lines is improved. Test strips with a pitch of 2.1mm and test strips with a pitch of 0.5mm were printed, the pitch of the dot-focus printing being smaller than the pitch spread of the dot-spread printing. When test strips with a spacing of 0.5mm are printed, the final effect of different printing modes is different. The average pitch for printing in the scatter printing mode is 0.56mm, while the pitch of the test strips printed by using the dot aggregation mode is closer to the ideal printing pitch, and the pitch of printing dots in different shapes is smaller than 0.52 mm. When printing test strips with a pitch of 2.1mm, the average pitch of the scatter prints was 2.17mm, but the test strips printed with dot focus were all less than 2.17mm apart, with the average pitch of the three different dots being 2.13mm, closer to the ideal print pitch than the ideal pitch of 2.1 mm. Compared with the dispersed printing, the dot aggregation printing can effectively reduce ink diffusion and improve the printing fineness of lines, thereby improving the overall printing effect;
(3) the dot bridging phenomenon caused by excessive ink diffusion is reduced, and the printing quality is improved. The absorption and reflection of light may reflect the phenomenon of grey scale transition due to dot gain. The reflectance to light is lower in dispersed printing and dot-aggregated printing; the reflectivity of the dispersed printing is 9% lower than that of the elliptic dots printed by the point aggregation with the highest reflectivity, the reflectivity of the square dots is similar to that of the circular dots, and the reflectivity is 5% higher than that of the dispersed printing. The reflectance of light by dot-focused printing is different due to the difference in the shapes of dots, and when adjacent dots are in contact, the contact areas are different due to the difference in the shapes, so that the reflection of light is different. The main reason for the difference in reflectivity between the dispersed printing and the aggregate printing is that the actual inking area of the frequency-modulated dots is larger than that of the real dots, resulting in an increase in the light-absorbing area, an increase in the light-absorbing amount, and finally a decrease in the reflection amount.
In conclusion, the method effectively solves the problem of poor image reducibility caused by excessive diffusion of ink on the fabric, gathers and prints the dots which are originally printed in a dispersed manner according to a certain rule, realizes the effect of high-precision printing, and solves the problems in the prior art.
Drawings
FIG. 1 is a comparison of the collective and dispersed printing modes in accordance with the present invention;
FIG. 2 is a flow chart of a method in an embodiment of the present invention;
FIG. 3 is a diagram illustrating a shape after a screening matrix is mapped according to an embodiment of the present invention;
FIG. 4 is a graph showing a comparison of the area expansion ratios of different dot shapes on paper in accordance with an embodiment of the present invention;
FIG. 5 is a comparison graph of the area expansion ratio of different dot shapes on the cloth according to the embodiment of the present invention;
FIG. 6 is a comparison of different types of dots printed at respective 0.5mm pitches in an embodiment of the present invention;
FIG. 7 is a comparison of different types of dots printed at respective 2.1mm pitches in an embodiment of the present invention;
FIG. 8 is a graph comparing the absorbance of light for different print modes in accordance with embodiments of the present invention;
FIG. 9 is a detailed comparison of different printing modes in an embodiment of the present invention.
Detailed Description
The invention is further illustrated by the following figures and examples:
example 1:
as shown in FIG. 2, the ink-jet printing method based on the aggregation state of the fabric comprises the following steps:
step 1: pretreatment of the fabric: selecting a fabric to be printed, and padding the fabric with the slurry;
step 2: printing dispersed ink dots: printing a plurality of scattered ink dots on the fabric, and measuring and observing the area and the form of the ink dots on the fabric;
and 3, step 3: designing aggregation state threshold matrixes with different shapes: designing a screening matrix with different shapes through a first design software, setting the size, the length and the width of the screening matrix as L multiplied by M, setting the angle of a screen line as theta, setting the inclination angle of the screening matrix, selecting the central position of the screening matrix as an initial point, designing aggregation state screen dot threshold value matrixes with different shapes from inside to outside according to the initial point according to the ink drop diffusion condition, and mapping each pixel and the designed aggregation state threshold value matrixes to form different shapes of screen dots after color separation of an image. As shown in fig. 3, it is a shape representation of the mapped screening matrix.
And 4, step 4: screening treatment: designing a dispersed mesh point by using design software II, screening the gray gradient test strip by using the aggregation state threshold matrix designed in the step 3 and the designed dispersed mesh point, respectively printing on different materials, and measuring the mesh point expansion rate of the different materials;
and 5: image processing: inputting a color image in the first design software, carrying out color separation treatment, selecting proper mesh point shapes, screening angles and screening line numbers according to the step 3 to respectively process the images after color separation, and carrying out color combination on the processed images;
and 6: and printing the image processed in the step 5.
Example 2:
the experimental equipment in this example was an Epson L416 inkjet printer, a Matlab2016, a LEICADVM6 model ultra-deep three-dimensional microscope, a Mathis CH8156 model bench press, a HWL-70 model forced air drying oven, a Hitachi U-3900 spectrophotometer, an Achrome Xact hand-held spectrophotometer, or a Phenom bench-top scanning electron microscope.
Based on example 1, the fabric is 28tex2 cotton yarn as warp and weft. The warp density is 280/10(cm), the weft density is 280/(10cm), the fabric weave is a plain weave, and the operation steps are as follows:
1. pretreatment of the fabric: selecting plain cotton fabric, and cutting to a reasonable size. Adding water into sodium carbonate with the mass fraction of 2%, urea with the mass fraction of 8% and sodium alginate with the mass fraction of 3%, stirring for 5 hours, and standing. And pouring the prepared slurry into a padder, and then carrying out two-dipping and two-rolling treatment on the cut cloth. The rolled cloth was taken out and dried at 100 ℃ for three minutes.
The printer is regulated to print 100 dispersed ink drops on the treated cotton fabric respectively, and the area and the form difference of different materials are measured and observed. Meanwhile, a circular, oval and square threshold matrix is designed by utilizing matlab, as shown in FIG. 3, and dispersed dots are designed by utilizing Adobe Photoshop, all designed dot algorithms are the same, a gray level gradient graph is printed in a rough photographic paper mode, the printing parameter is 600dpi, the screening angle is 0 degree, the screening number is 75lpi, and the printing final area and the ink diffusion condition are observed.
The method comprises the steps of designing round, oval and square dots by using matlab, designing dispersed dot types by using Adobe Photoshop, printing strips with the printing intervals of 2.1mm respectively, printing in a rough photographic paper mode, wherein the printing parameters are 600dpi, the screening angle of the aggregated dots is 0 degree, the screening number is 75lpi, and measuring the actual printing intervals and the final printing effect.
Different dot types are designed by software, images with the dot area of 50% are printed, and absorption and reflection of light of different dot types are measured by a spectrophotometer. In order to explore the effect of printing continuous images with different dot types, an image printing experiment is carried out. Selecting a proper image, carrying out color separation processing on the image by using matlab, processing the image by using a designed aggregation state dot matrix, carrying out dispersed dot design on the image after color separation by using Adobe Photoshop, sending the processed image to a printer for printing, wherein the screening angle of the aggregation state dot printing is 15 degrees for a C edition, 75 degrees for an M edition, 0 degree for a K edition, and the 45 degrees for the K edition are all 75lpi, the printing parameter is 600dpi, and the printing mode of the printer is a rough-faced photographic paper mode.
Example 3:
on the basis of example 2, the fabric is 28tex2 cotton yarn as warp and weft. The warp density is 280/10(cm), the weft density is 280/(10cm), the fabric weave is plain weave, and the operation steps are as follows:
1. pretreatment of the fabric: 1. selecting plain cotton fabric and cutting to a reasonable size. Adding water into sodium carbonate with the mass fraction of 2%, urea with the mass fraction of 8% and sodium alginate with the mass fraction of 3%, stirring for 5 hours, and standing. And pouring the prepared slurry into a padder, and then carrying out two-dipping and two-rolling treatment on the cut cloth. And taking out the rolled cloth and drying the cloth for three minutes at 100 ℃.
2. The printer is regulated to print 100 dispersed ink drops on the treated cotton fabric respectively, and the area and the form difference of different materials are measured and observed. Meanwhile, a threshold matrix of a diamond shape, a cross shape and a concentric circle is designed by utilizing matlab, dispersed dots are designed by utilizing Adobe Photoshop, all designed dot algorithms are the same, a gray level gradient graph is printed in a rough photographic paper mode, the printing parameter is 600dpi, the screening angle is 0 degree, the screening number is 75lpi, and the final printing area and the ink diffusion condition are observed.
3. Designing diamond, cross and concentric dot types by using matlab, designing dispersed dot types by using Adobe Photoshop, printing strips with the printing intervals of 0.5mm respectively, printing in a rough photographic paper mode, wherein the printing parameters are 600dpi, the screening angle of the aggregated dot is 0 degree, the screening number is 75lpi, and measuring the actual printing interval and the final printing effect.
4. Different dot types are designed by software, images with the dot area of 50% are printed, and absorption and reflection of light of different dot types are measured by a spectrophotometer. In order to explore the effect of printing continuous images with different dot types, an image printing experiment is carried out. Selecting a proper image, carrying out color separation processing on the image by using matlab, processing the image by using a designed aggregation state dot matrix, carrying out dispersed dot design on the image after color separation by using Adobe Photoshop, sending the processed image to a printer for printing, wherein the screening angle of the aggregation state dot printing is 15 degrees for a C edition, 75 degrees for an M edition, 0 degree for a K edition, and the 45 degrees for the K edition are all 75lpi, the printing parameter is 600dpi, and the printing mode of the printer is a rough-faced photographic paper mode.
As can be seen from fig. 4 to 5, the area enlargement rate is also different due to the difference in the printing manner. The maximum area expansion rate of the point-dispersed frequency-modulated printing mode on paper is 20%, the area expansion rate of the point-aggregated printing mode is much smaller, the maximum expansion rate of the point-aggregated elliptical screen dots is 10%, and the ratio is reduced by 10%; 3-4, it can be seen that the spreading rate of the ink on the cloth is obviously greater than that of the paper, the area spreading rate of the frequency modulation dots on the cloth reaches 40%, the spreading rate of the oval dots printed by dot aggregation on the cloth is only 16%, and the area spreading rate is relatively reduced by 24%, so that the ink spreading can be better reduced on the cloth by the dot aggregation printing mode.
Example 4:
based on example 2, the fabric selected was 28tex2 cotton yarn as warp and weft. The warp density is 280/10(cm), the weft density is 280/(10cm), the fabric weave is a plain weave, and the operation steps are as follows:
1. pretreatment of the fabric: selecting plain cotton fabric and cutting to a reasonable size. Adding water into sodium carbonate with the mass fraction of 2%, urea with the mass fraction of 8% and sodium alginate with the mass fraction of 3%, stirring for 5 hours, and standing. And pouring the prepared slurry into a padder, and then carrying out two-dipping and two-rolling treatment on the cut cloth. The rolled cloth was taken out and dried at 100 ℃ for three minutes.
2. The printer is regulated to print 100 dispersed ink drops on the treated cotton fabric respectively, and the area and the form difference of different materials are measured and observed. Meanwhile, a circular, oval and square threshold matrix is designed by utilizing matlab, dispersed dots are designed by utilizing Adobe Photoshop, all designed dot algorithms are the same, a gray level gradient graph is printed in a rough photographic paper mode, printing parameters are 1200dpi, a screen adding angle is 15 degrees, the number of screen adding lines is 120lpi, and the final printing area and the ink diffusion condition of the gray level gradient graph are observed.
3. Round, oval and square dots are designed by utilizing matlab, dispersed dot types are designed by utilizing Adobe Photoshop, printing strips with the printing intervals of 2.1mm are printed respectively, printing is carried out in a rough photographic paper mode, the printing parameters are 1200dpi, the screening angle of the aggregated dots is 15 degrees, the screening number is 120lpi, and the actual printing intervals and the final printing effect are measured.
4. Different dot types are designed by software, images with the dot area of 50% are printed, and absorption and reflection of light of different dot types are measured by a spectrophotometer. In order to explore the effect of printing continuous images with different dot types, an image printing experiment is carried out. Selecting a proper image, carrying out color separation processing on the image by using matlab, processing the image by using a designed aggregation state dot matrix, carrying out dispersed dot design on the image after color separation by using Adobe Photoshop, sending the processed image to a printer for printing, wherein the screening angle of the aggregation state dot printing is C version 0 degrees, M version 75 degrees, K version 15 degrees, K version 45 degrees, all the screening lines are 120lpi, the printing parameter is 1200dpi, and the printing mode of the printer is a rough-surface photographic paper mode.
Example 5:
based on example 2, the fabric selected was 28tex2 cotton yarn as warp and weft. The warp density is 280/10(cm), the weft density is 280/(10cm), the fabric weave is a plain weave, and the operation steps are as follows:
1. pretreatment of the fabric: selecting plain cotton fabric and cutting to a reasonable size. Adding water into sodium carbonate with the mass fraction of 2%, urea with the mass fraction of 8% and sodium alginate with the mass fraction of 3%, stirring for 5 hours, and standing. And pouring the prepared slurry into a padder, and then carrying out two-dipping and two-rolling treatment on the cut cloth. The rolled cloth was taken out and dried at 100 ℃ for three minutes.
2. Regulating and controlling a printer to print 100 dispersed ink drops on the treated cotton fabric respectively, and measuring and observing the area and the shape difference of different materials. Meanwhile, a threshold matrix of a diamond shape, a cross shape and a concentric circle is designed by utilizing matlab, dispersed dots are designed by utilizing Adobe Photoshop, all designed dot algorithms are the same, a gray level gradient graph is printed in a rough photographic paper mode, the printing parameter is 1200dpi, the screening angle is 45 degrees, the screening number is 150lpi, and the final printing area and the ink diffusion condition are observed.
3. Designing diamond, cross and concentric dot types by using matlab, designing dispersed dot types by using Adobe Photoshop, printing strips with the printing intervals of 0.5mm respectively, printing in a rough photographic paper mode, wherein the printing parameters are 1200dpi, the screening angle of the aggregated dot is 45 degrees, the screening number is 150lpi, and measuring the actual printing interval and the final printing effect.
4. Different dot types are designed by software, images with the dot area of 50% are printed, and absorption and reflection of light of different dot types are measured by a spectrophotometer. In order to explore the effect of printing continuous images with different dot types, an image printing experiment is carried out. Selecting a proper image, carrying out color separation processing on the image by using matlab, processing the image by using a designed aggregation state dot matrix, carrying out dispersed dot design on the image after color separation by using Adobe Photoshop, sending the processed image to a printer for printing, wherein the screening angle of the aggregation state dot printing is 45 degrees for a C edition, 75 degrees for an M edition, 15 degrees for a K edition, 0 degrees for a K edition, all the screening lines are 150lpi, the printing parameter is 1200dpi, and the printing mode of the printer is a rough-faced photographic paper mode.
As can be seen in fig. 6-7, the final effect of the different printing patterns is different when printing test strips with a pitch of 0.5 mm. The average pitch for printing in the scatter printing mode is 0.56mm, while the pitch of the test strips printed by using the dot aggregation mode is closer to the ideal printing pitch, and the pitch of printing dots in different shapes is smaller than 0.52 mm. As can be seen in fig. 5-6, when printing test strips with a pitch of 2.1mm, the average pitch of the scatter prints was 2.17mm, but the test strip pitch printed using dot clustering was less than 2.17mm, with the average pitch of the three different dots being 2.13mm, closer to the ideal print pitch than the ideal pitch of 2.1 mm. This also demonstrates that dot aggregation printing can effectively reduce ink spreading and improve the print fineness of lines compared to scatter printing, thereby improving the overall printing effect.
Example 6:
based on example 2, the fabric selected was 28tex2 cotton yarn as warp and weft. The warp density is 280/10(cm), the weft density is 280/(10cm), the fabric weave is a plain weave, and the operation steps are as follows:
1. pretreatment of the fabric: selecting plain cotton fabric and cutting to a reasonable size. Adding water into sodium carbonate with the mass fraction of 2%, urea with the mass fraction of 8% and sodium alginate with the mass fraction of 3%, stirring for 5 hours, and standing. And pouring the prepared slurry into a padder, and then carrying out two-dipping and two-rolling treatment on the cut cloth. The rolled cloth was taken out and dried at 100 ℃ for three minutes.
2. The printer is regulated to print 100 dispersed ink drops on the treated cotton fabric respectively, and the area and the form difference of different materials are measured and observed. Meanwhile, a threshold matrix of a diamond shape, a cross shape and a concentric circle is designed by utilizing matlab, dispersed dots are designed by utilizing Adobe Photoshop, all designed dot algorithms are the same, a gray level gradient graph is printed in a rough photographic paper mode, the printing parameter is 300dpi, the screening angle is 45 degrees, the screening number is 50lpi, and the final printing area and the ink diffusion condition are observed.
3. Designing rhombic, crossed and concentric dot types by utilizing matlab, designing dispersed dot types by utilizing Adobe Photoshop, printing strips with the printing spacing of 0.5mm respectively, printing in a rough photographic paper mode, wherein the printing parameters are 300dpi, the screening angle of the aggregated dot is 45 degrees, the screening line number is 50lpi, and measuring the actual printing spacing and the final printing effect.
4. Different dot types are designed by software, images with the dot area of 50% are printed, and absorption and reflection of light of different dot types are measured by a spectrophotometer. In order to explore the effect of printing continuous images by different dot types, an image printing experiment is carried out. Selecting a proper image, carrying out color separation processing on the image by using matlab, processing the image by using a designed aggregation state dot matrix, carrying out dispersed dot design on the image after color separation by using Adobe Photoshop, sending the processed image to a printer for printing, wherein the screening angle of the aggregation state dot printing is 20 degrees for a C edition, 60 degrees for an M edition, 40 degrees for a K edition, 80 degrees for a K edition, all the screening lines are 50lpi, the printing parameter is 300dpi, and the printing mode of the printer is a rough-faced photographic paper mode.
Example 7:
the fabric selected was 28tex2 cotton as warp and weft. The warp density is 280/10(cm), the weft density is 280/(10cm), the fabric weave is a plain weave, and the operation steps are as follows:
1. pretreatment of the fabric: selecting plain cotton fabric and cutting to a reasonable size. Adding water into sodium carbonate with the mass fraction of 2%, urea with the mass fraction of 8% and sodium alginate with the mass fraction of 3%, stirring for 5 hours, and standing. And pouring the prepared slurry into a padder, and then carrying out two-dipping and two-rolling treatment on the cut cloth. The rolled cloth was taken out and dried at 100 ℃ for three minutes.
2. The printer is regulated to print 100 dispersed ink drops on the treated cotton fabric respectively, and the area and the form difference of different materials are measured and observed. Meanwhile, a threshold matrix of a circle, an ellipse, a square, a diamond, a cross and a concentric circle is designed by utilizing matlab, dispersed dots are designed by utilizing Adobe Photoshops, all designed dot algorithms are the same, a gray level gradient graph is printed in a rough photographic paper mode, the printing parameter is 1200dpi, the screening angle is 45 degrees, the number of the screened lines is 100lpi, and the final printing area and the ink diffusion condition are observed.
3. Round, oval, square, diamond, cross and concentric circle dots are designed by utilizing matlab, dispersed dot types are designed by utilizing Adobe Photoshop, printing strips with the printing intervals of 0.5mm are printed respectively, printing parameters are 1200dpi, the screening angle of the aggregated dots is 45 degrees, the number of the screened lines is 100lpi, and the actual printing intervals and the final printing effect are measured.
4. Different dot types are designed by software, images with the dot area of 50% are printed, and absorption and reflection of light of different dot types are measured by a spectrophotometer. In order to explore the effect of printing continuous images with different dot types, an image printing experiment is carried out. Selecting a proper image, carrying out color separation processing on the image by using matlab, processing the image by using a designed aggregation state dot matrix, carrying out dispersed dot design on the image after color separation by using Adobe Photoshop, sending the processed image to a printer for printing, wherein the screening angle of the aggregation state dot printing is 60 degrees for C edition, 0 degree for M edition, 45 degrees for K edition, 30 degrees for K edition, all the screening lines are 100lpi, the printing parameter is 1200dpi, and the printing mode of the printer is a rough-surface photographic paper mode.
As shown in fig. 8, the reflectance to light is lower in the dispersed printing and the dot-concentrated printing; the reflectivity of the dispersed printing is 9% lower than that of the elliptic dots printed by the point aggregation with the highest reflectivity, the reflectivity of the square dots is similar to that of the circular dots, and the reflectivity is 5% higher than that of the dispersed printing. The reflectance of light by dot-focused printing is different due to the difference in the shapes of dots, and when adjacent dots are in contact, the contact areas are different due to the difference in the shapes, so that the reflection of light is different. The main reason for the difference in reflectivity between the dispersed printing and the aggregate printing is that the actual inking area of the frequency-modulated dots is larger than that of the real dots, which increases the light absorption area, increases the light absorption amount, and finally decreases the reflection amount.
As shown in FIG. 9, a proper image is selected, the image is processed by software, the processed image is sent to RIP software for processing, the final printing screen angle is 15 degrees for C edition, 75 degrees for M edition, 0 degree for K edition, and 45 degrees for K edition screen lines are all 75lpi, the printing parameter is 600dpi, the image printed by the method has high fineness, the dot bridging phenomenon caused by excessive ink diffusion is less, and the printing quality can be effectively improved.
By adopting the ink-jet printing method based on the aggregation state of the fabric, which is described by the embodiment of the invention in combination with the attached drawings, the problem of poor image reducibility caused by excessive diffusion of ink on the fabric is effectively solved, the original dots which are printed in a dispersed manner are aggregated and printed according to a certain rule, the effect of high-precision printing is realized, and the problems in the prior art are solved. The present invention is not limited to the embodiments described, but rather, variations, modifications, substitutions and alterations are possible without departing from the spirit and scope of the present invention.
Claims (10)
1. An ink-jet printing method based on fabric aggregation state is characterized in that: the method comprises the following steps:
step 1: pretreatment of the fabric: selecting a fabric to be printed, and padding the fabric with the slurry;
step 2: printing dispersed ink dots: printing a plurality of scattered ink dots on the fabric, and measuring and observing the area and the form of the ink dots on the fabric;
and step 3: designing an aggregation state threshold matrix: designing screening matrixes with different shapes through design software I, and designing aggregation state threshold matrixes with different shapes from inside to outside according to the ink drop diffusion condition in the step 2;
and 4, step 4: screening treatment: designing a dispersed mesh point by using design software II, screening the gray gradient test strip by using the aggregation state threshold matrix designed in the step 3 and the designed dispersed mesh point, respectively printing on different materials, and measuring the mesh point expansion rate of the different materials;
and 5: image processing: inputting a color image in the first design software, carrying out color separation treatment, selecting proper mesh point shapes, screening angles and screening line numbers according to the step 3 to respectively process the images after color separation, and carrying out color combination on the processed images;
step 6: and printing the image processed in the step 5.
2. The inkjet printing method based on the aggregate state of the fabric according to claim 1, wherein: in the step 1, sodium carbonate, urea and sodium alginate are added with water and stirred to prepare slurry, the prepared slurry is poured into a padder, then the cut cloth is subjected to padding treatment, and the padded cloth is taken out and dried.
3. The inkjet printing method based on the aggregate state of the fabric according to claim 1, wherein: the step of designing the aggregation state threshold value matrixes with different shapes in the step 3 specifically comprises the following steps: setting the size of the screening matrix as L multiplied by M and the screen line angle as theta, selecting the central position of the screening matrix as an initial point, designing different-shape aggregation state screen point threshold value matrixes according to the ink drop diffusion condition and the initial point from inside to outside, and mapping each pixel and the designed aggregation state threshold value matrixes to form different-shape screen points after color separation of the image.
4. The inkjet printing method based on the aggregate state of the fabric according to claim 1, wherein: the material printed in the step 4 comprises a fabric material and a paper material.
5. The inkjet printing method based on the aggregate state of the fabric according to claim 1, wherein: the fabric in the step 1 comprises one or more of cotton, hemp, wool, silk, terylene, acrylon, chinlon, polypropylene fiber, spandex and regenerated cellulose fiber.
6. The inkjet printing method based on the aggregate state of the fabric according to claim 3, wherein: the shapes of the dots of the aggregation state threshold matrix after mapping in the step 3 comprise a circle, an ellipse, a diamond, a square, a cross and a concentric circle.
7. The inkjet printing method based on the aggregate state of the fabric according to claim 1, wherein: and 4, the gray scale of the gray scale gradient test strip is changed into 0-100 percent.
8. The inkjet printing method based on the aggregate state of the fabric according to claim 1, wherein: in the step 5, the resolution of the input color image is 200dpi to 2400dpi, the screening angle is 0 to 90 degrees, and the number of screening lines is 50lpi to 300 lpi.
9. The inkjet printing method based on the aggregate state of the fabric according to claim 1, wherein: the first design software is matlab design software.
10. The inkjet printing method based on the aggregate state of the fabric according to claim 1, wherein: the second design software is Adobe Photoshop software.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2545630A1 (en) * | 1983-05-04 | 1984-11-09 | Lafon Michel | Method of producing coloured models for printing on fabrics or paper |
| US4562107A (en) * | 1982-09-30 | 1985-12-31 | Springs Industries, Inc. | Textile fabrics with opaque pigment printing and method of producing same |
| CA2100726A1 (en) * | 1992-12-04 | 1994-06-05 | Yasushi Miura | Apparatus and method for manufacturing ink jet printed products and ink jet printed products manufactured using the method |
| CN102539434A (en) * | 2012-01-06 | 2012-07-04 | 江南大学 | Image analysis based method for evaluating colorfastness to washing of digital ink jet printing textiles |
| CN110029511A (en) * | 2019-04-19 | 2019-07-19 | 天津工业大学 | A kind of process for surface preparation of ink-jet printed pretreating agent and silk fabric |
-
2022
- 2022-04-29 CN CN202210471999.2A patent/CN114960240B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4562107A (en) * | 1982-09-30 | 1985-12-31 | Springs Industries, Inc. | Textile fabrics with opaque pigment printing and method of producing same |
| FR2545630A1 (en) * | 1983-05-04 | 1984-11-09 | Lafon Michel | Method of producing coloured models for printing on fabrics or paper |
| CA2100726A1 (en) * | 1992-12-04 | 1994-06-05 | Yasushi Miura | Apparatus and method for manufacturing ink jet printed products and ink jet printed products manufactured using the method |
| CN102539434A (en) * | 2012-01-06 | 2012-07-04 | 江南大学 | Image analysis based method for evaluating colorfastness to washing of digital ink jet printing textiles |
| CN110029511A (en) * | 2019-04-19 | 2019-07-19 | 天津工业大学 | A kind of process for surface preparation of ink-jet printed pretreating agent and silk fabric |
Non-Patent Citations (2)
| Title |
|---|
| 王琪: "基于网点结构形态的图像信息印刷复制研究", 中国博士学位论文全文数据库工程科技Ⅰ辑, no. 3, pages 024 - 18 * |
| 蒋小明: "纺织品数码喷墨印花加工关键技术探讨", 《现代纺织技术》, no. 1, pages 46 - 51 * |
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