Introduction Of Flat Screen Printing Machine Toning
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Posted by licheng flatprinter - Filed in Business - #Stenter #Flat Screen Printing Machine - 778 views
Licheng Stenter is a professional manufacturer of screen printing machines, pad printing machines, and various printing equipment. The following is a brief talk about the basic methods of screen printing ink color adjustment:
The so-called color matching refers to the combination of two or more colors, or a few colors in addition to the main toning color, to form a color combination. When the colorful ink is distributed before use, the color to be produced on the color sample is first revealed, and the original (or original) color is accurately distinguished as the primary color, the secondary color, or the secondary color. If it is a secondary color or a complex color, it is necessary to distinguish the share of the main color and the auxiliary color. Secondly, it must be adjusted according to the color indicated by the original manuscript. When compared with the original manuscript, the color difference is small or the same, the distribution can be done in large quantities, and the time should be short and the adjustment should be appropriate. Too little adjustment will constitute a strike, and the ink hues will be different, which will affect the normal production; too much will constitute unnecessary waste. Ink adjustment is usually done in a place where the light is stable or where the light does not shine directly.
Pay attention to three points when adjusting silk screen inks: a. When mixing inks, you should add as few inks of different colors as possible. The fewer types of inks, the better the mixing effect. b. Choose the "from lighter to darker" criterion, no matter how to make light or gorgeous colorful inks, when the colors are close to the template, be careful. It is best not to mix the inks produced by different manufacturers. Try to use inks of different colors from the same manufacturer for color mixing. Otherwise, uneven colors will occur, and the ink will be agglomerated and become useless in severe cases. c. Some screen printing inks are dried after drying. Light colors are lighter than undried ones after drying, and darker ones are darker after drying. In addition, whether the color of the ink is different before and after printing is a question that is simply ignored. Generally speaking, after natural and boring (solvent volatile ink), the substrate is plastic, metal, paper, glass, etc., and the color will not change; but if the color material for ceramics is burned and oxidized, the color will appear , Can only be graded by experience. Regarding the boring screen printing ink after heat curing and light curing, the color has changed in depth, as mentioned above. When the amount of ink adjustment is large, the ink adjustment machine can be used, and the color adjustment can be completed in a short time.
The original ink colors are mixed in different proportions to produce inks of many colors.
The distribution of light-colored inks is usually white ink, with appropriate colorful inks. For example, light blue, mainly white ink, with a little blue (cyan); light red, mainly white ink, with a little red; gray, mainly white ink, with a little black; silver gray, mainly white ink, slightly Add silver paste and a trace of black ink. To make light-colored silk screen inks (printing materials), add as little white ink as possible. Because of the high activity of white ink, it is easy to cause other colors to change color.
For silk screen workers to adjust the ink well, it is necessary to: a. Understand the various specifications and functions of the ink; make the matched ink suitable for production requirements. b. Grasp the basic knowledge of chromatology, and be comfortable in ink adjustment. c. Analyze the color and process skills of printing, find out the color sequence of multiple sets of printing, to avoid incorrect color sequence, miscibility of the two colors, and color changes. d. Pay attention to the brightness of the ink color when adjusting the ink, and if the brightness is large, try to distribute the original color as much as possible, otherwise it is easy to make the transferred ink "gray" and reduce the original color brightness. 3. Adjustment of ink printing suitability. Generally, the viscosity of the screen printing ink is slightly higher. The user should use the appropriate solvent, thinner and surface according to the characteristics of the printed picture, the number of screen meshes, the printing speed, the workshop temperature, the surface tension of the substrate and the ink absorption function. Active agent and viscosity reducer, etc., comprehensively adjust the viscosity, surface tension, fluidity and drying speed of the ink. For example, when printing fine lines and dots, the ink fluidity should be slightly lower, and the drying speed can be slightly slow; when printing on a coarse screen, the viscosity should be slightly higher, and the drying speed can be slightly faster; when printing at high speeds, the fluidity should be slightly greater, and the drying speed can Slightly faster; when the workshop temperature is high, the drying should be slower and the viscosity should be slightly higher; when the surface tension of the substrate is small, the surface tension of the ink should also be lower; when the printing surface has strong ink absorption, the fluidity and surface tension of the ink can be large Some, the boring speed can be slower. Appropriate conditioning skills also depend on internship experience
The so-called color matching refers to the combination of two or more colors, or a few colors in addition to the main toning color, to form a color combination. When the colorful ink is distributed before use, the color to be produced on the color sample is first revealed, and the original (or original) color is accurately distinguished as the primary color, the secondary color, or the secondary color. If it is a secondary color or a complex color, it is necessary to distinguish the share of the main color and the auxiliary color. Secondly, it must be adjusted according to the color indicated by the original manuscript. When compared with the original manuscript, the color difference is small or the same, the distribution can be done in large quantities, and the time should be short and the adjustment should be appropriate. Too little adjustment will constitute a strike, and the ink hues will be different, which will affect the normal production; too much will constitute unnecessary waste. Ink adjustment is usually done in a place where the light is stable or where the light does not shine directly.
Pay attention to three points when adjusting silk screen inks: a. When mixing inks, you should add as few inks of different colors as possible. The fewer types of inks, the better the mixing effect. b. Choose the "from lighter to darker" criterion, no matter how to make light or gorgeous colorful inks, when the colors are close to the template, be careful. It is best not to mix the inks produced by different manufacturers. Try to use inks of different colors from the same manufacturer for color mixing. Otherwise, uneven colors will occur, and the ink will be agglomerated and become useless in severe cases. c. Some screen printing inks are dried after drying. Light colors are lighter than undried ones after drying, and darker ones are darker after drying. In addition, whether the color of the ink is different before and after printing is a question that is simply ignored. Generally speaking, after natural and boring (solvent volatile ink), the substrate is plastic, metal, paper, glass, etc., and the color will not change; but if the color material for ceramics is burned and oxidized, the color will appear , Can only be graded by experience. Regarding the boring screen printing ink after heat curing and light curing, the color has changed in depth, as mentioned above. When the ink volume is large, the Flat Screen Printing Machine can be used to complete the color adjustment in a short time.
The distribution of light-colored inks is usually white ink, with appropriate colorful inks. For example, light blue, mainly white ink, with a little blue (cyan); light red, mainly white ink, with a little red; gray, mainly white ink, with a little black; silver gray, mainly white ink, slightly Add silver paste and a trace of black ink. To make light-colored silk screen inks (printing materials), add as little white ink as possible. Because of the high activity of white ink, it is easy to cause other colors to change color.
For silk screen workers to adjust the ink well, it is necessary to: a. Understand the various specifications and functions of the ink; make the matched ink suitable for production requirements. b. Grasp the basic knowledge of chromatology, and be comfortable in ink adjustment. c. Analyze the color and process skills of printing, find out the color sequence of multiple sets of printing, to avoid incorrect color sequence, miscibility of the two colors, and color changes. d. Pay attention to the brightness of the ink color when adjusting the ink, and if the brightness is large, try to distribute the original color as much as possible, otherwise it is easy to make the transferred ink "gray" and reduce the original color brightness.