Ink-jet printer ink

Abstract

The invention belongs to the technical field of ink-jet printing, and particularly relates to ink-jet printer ink which comprises pigment, dye and auxiliaries, the auxiliaries comprise a dispersing agent, a surface active agent, a diffusion drying agent, an anti-blocking agent, an anti-fading agent and a solvent, and the anti-fading agent comprises an antioxidant, a light stabilizer and a metal complexing agent. The dispersing agent is an environment-friendly efficient dispersing agent, the surfactant is a low-foam surfactant, the anti-blocking agent is an organic solvent, and the antioxidant, the light stabilizer and the metal complexing agent are combined with other component molecules in a chemical bonding mode to form a stable complex. The solvent is a high-purity glycol ether compound, and the dispersing agent is a mixture of stearamide and higher alcohol. According to the ink-jet printer ink disclosed by the invention, optimization in the aspects of color stability, water resistance, light resistance and the like is realized through a series of elaborately designed formulas and component combinations.

Description

Technical Field

[0001] The invention relates to the technical field of inkjet printing, in particular to ink for an inkjet printer. Background Art

[0002] Inkjet printer is a widely used office equipment, which is favored by many users for its high precision and convenience. With the continuous advancement of science and technology, modern inkjet printers have significantly improved in printing speed. Compared with early inkjet printers, new printers are more efficient in handling a large number of printing tasks, which greatly shortens the waiting time. With the continuous expansion of the functions of inkjet printers, it provides more convenience for users. In modern office and industrial production applications, inkjet printing technology is widely used because of its high efficiency, low cost and easy operation. Inkjet printer ink is a key material in the printing process, and its performance directly affects the print quality and the service life of the printing equipment. Traditional inkjet printer ink has problems such as poor color stability, insufficient water resistance and light resistance. These problems have limited the application scope and printing effect of inkjet printing technology to a certain extent.

[0003] Therefore, the present invention proposes an inkjet printer ink to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings mentioned in the above background technology and to propose an inkjet printer ink.

[0005] The above technical purpose of the present invention is achieved through the following technical solutions: an inkjet printer ink, comprising: an ink base ink, a dye and an auxiliary agent; The proportion of ink base ink, dyes and additives is as follows: Ink base ink 70-85%; Dye 3-9%; Additives 6-27%; The auxiliary agent includes a dispersant, a surfactant, a diffusion drying agent, an anti-clogging agent, an anti-fading agent and a solvent, wherein the proportion of the dispersant, the surfactant, the diffusion drying agent, the anti-clogging agent, the anti-fading agent and the solvent in the auxiliary agent is as follows: Dispersant 5-10%; Surfactant 15-25%; Diffusion desiccant 10-20%; Anti-clogging agent 10-20%; Anti-fading agent 10-15%; Solvent 30-50%; The anti-fading agent includes an antioxidant, a light stabilizer and a metal complexing agent, wherein the proportion of the antioxidant, the light stabilizer and the metal complexing agent in the anti-fading agent is: Antioxidants 20-30%; Light stabilizer 30-50%; Metal complexing agent 30-40%.

[0006] Preferably, the dispersant is an environmentally friendly and efficient dispersant.

[0007] Preferably, the surfactant is a low-foaming surfactant.

[0008] Preferably, the anti-clogging agent is an organic solvent.

[0009] Preferably, the antioxidant, light stabilizer and metal complexing agent are combined with other component molecules by chemical bonding to form a stable complex.

[0010] Preferably, the solvent is a high-purity glycol ether compound.

[0011] Preferably, the dispersant is a combination of stearylamide and a higher alcohol.

[0012] Preferably, the dye is an organic dye with high color saturation.

[0013] Preferably, the diffusion desiccant is an organic silicon diffusion desiccant.

[0014] An inkjet printer ink, the preparation steps of which are as follows: S1, weigh 70-85% of the base ink, 3-9% of the dye and 6-27% of the additive according to the proportion, and put them into different containers respectively, then weigh the dispersant, surfactant, diffusion drying agent, anti-clogging agent, anti-fading agent and solvent in the additive according to the proportion of 5-10% of the dispersant, 15-25% of the surfactant, 10-20% of the diffusion drying agent, 10-20% of the anti-clogging agent, 10-15% of the anti-fading agent and 30-50% of the solvent; S2, mixing the dispersant and the surfactant together and stirring evenly to ensure that they can be fully dispersed in the ink base ink, then adding the mixed dispersant and surfactant into the ink base ink, and starting preliminary mixing and stirring for 20-40 minutes, the temperature is controlled at 28-60°C, and the stirring speed is 750-1300rpm; S3, add the diffusion drying agent, anti-clogging agent and anti-fading agent to the preliminary mixture, continue to stir evenly to ensure that these additives can be evenly dispersed in the ink. At this time, raise the temperature to 28-60°C, keep the stirring speed unchanged, and continue stirring for 20-40 minutes; S4, adding the solvent to the mixture for final mixing and stirring for 30 minutes, maintaining the temperature at 28-60°C, and increasing the stirring speed to 750-1300rpm. After the mixing is completed, the mixture is filtered using a filter bag with a fineness of 10μm to remove any impurities and particles that may be present.

[0015] The beneficial effects of the present invention are: By optimizing the ink formula and component combination, the inkjet printer ink of the present invention has achieved significant breakthroughs in color stability, water resistance, light resistance, environmental protection and printing efficiency. Specifically, the reasonable ratio of the ink base ink, dye and auxiliary agent ensures that the ink can maintain good fluidity and stability under various printing conditions, thereby improving the printing quality. The use of environmentally friendly and efficient dispersants makes the ink more uniform during the printing process, reducing the impact on the environment. The addition of low-foaming surfactants effectively reduces the generation of foam during the printing process, improves printing efficiency and quality, and organic solvents as anti-clogging agents can effectively prevent the ink from being blocked at the nozzle, ensuring smooth inkjet printing.

[0016] The combination of antioxidants, light stabilizers and metal chelating agents further improves the light resistance and weather resistance of the ink, and effectively prevents the fading and discoloration of the ink during long-term use. High-purity glycol ether compounds are used as solvents to not only improve the solubility of the ink, but also ensure the environmental friendliness of the ink during the printing process. The dispersant of stearamide and higher alcohols further improves the dispersion performance of the ink, making the ink more uniform during the printing process.

[0017] The selection of organic dyes with high color saturation makes the printed images more vivid and lifelike. The addition of silicone diffusion desiccant accelerates the drying process of the ink and improves printing efficiency. Through these optimization measures, the inkjet printer ink of the present invention not only meets the modern printing industry's demand for high quality, high efficiency and low energy consumption, but also has good environmental performance, providing users with a better quality and more efficient printing solution. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1

[0019] An inkjet printer ink, comprising a base ink, a dye and an additive; wherein the base ink, the dye and the additive account for: 75% of the base ink; 4% of the dye; and 21% of the additive; The auxiliary agent includes a dispersant, a surfactant, a diffusion drying agent, an anti-clogging agent, an anti-fading agent and a solvent, wherein the proportion of the dispersant, the surfactant, the diffusion drying agent, the anti-clogging agent, the anti-fading agent and the solvent in the auxiliary agent is as follows: dispersant 8%; surfactant 20%; diffusion drying agent 16%; anti-clogging agent 14%; anti-fading agent 12%; solvent 30%; The anti-fading agent includes an antioxidant, a light stabilizer and a metal complexing agent, wherein the proportions of the antioxidant, the light stabilizer and the metal complexing agent in the anti-fading agent are: 30% antioxidant; 40% light stabilizer; 30% metal complexing agent.

[0020] Specifically, the dispersant is an environmentally friendly and efficient dispersant, the surfactant is a low-foaming surfactant, the anti-clogging agent is an organic solvent, the antioxidant, light stabilizer and metal chelating agent are combined with other component molecules by chemical bonding to form a stable complex, the solvent is a high-purity glycol ether compound, the dispersant is a combination of stearamide and higher alcohol, the dye is an organic dye with high color saturation, and the diffusion desiccant is an organosilicon diffusion desiccant.

[0021] The preparation steps are as follows (the following components are calculated by weight percentage). First, 75% of the base ink, 4% of the dye and 21% of the auxiliary agent are weighed according to the proportion and put into different containers respectively. Then, the dispersant, surfactant, diffusion drying agent, anti-clogging agent, anti-fading agent and solvent in the auxiliary agent are weighed according to the proportion of dispersant 8%, surfactant 20%, diffusion drying agent 16%, anti-clogging agent 14%, anti-fading agent 12% and solvent 30%.

[0022] Mix the dispersant and surfactant together and stir evenly to ensure that they can be fully dispersed in the ink base ink. Then, add the mixed dispersant and surfactant to the ink base ink and start preliminary mixing and stirring. The stirring time is 20 minutes, the temperature is controlled at 45°C, and the stirring speed is 900rpm.

[0023] Next, add the diffusion drying agent, anti-clogging agent and anti-fading agent to the preliminary mixture and continue to stir evenly to ensure that these additives can be evenly dispersed in the ink. At this time, raise the temperature to 55°C, keep the stirring speed unchanged, and continue stirring for 20 minutes.

[0024] Finally, the solvent was added to the mixture for final mixing and stirring for 30 minutes. The temperature was maintained at 55°C and the stirring speed was increased to 1100 rpm. After mixing, the mixture was filtered using a 10 μm filter bag to remove any impurities and particles that might be present. Embodiment 2

[0025] An inkjet printer ink, comprising a base ink, a dye and an additive; wherein the base ink, the dye and the additive account for: 75% of the base ink; 8% of the dye; and 17% of the additive; The auxiliary agent includes a dispersant, a surfactant, a diffusion drying agent, an anti-clogging agent, an anti-fading agent and a solvent, wherein the proportion of the dispersant, the surfactant, the diffusion drying agent, the anti-clogging agent, the anti-fading agent and the solvent in the auxiliary agent is as follows: dispersant 8%; surfactant 20%; diffusion drying agent 12%; anti-clogging agent 10%; anti-fading agent 10%; solvent 40%; The anti-fading agent includes an antioxidant, a light stabilizer and a metal chelating agent, wherein the proportions of the antioxidant, the light stabilizer and the metal chelating agent in the anti-fading agent are as follows: antioxidant 23%; light stabilizer 45%; metal chelating agent 32%.

[0026] Specifically, the dispersant is an environmentally friendly and efficient dispersant, the surfactant is a low-foaming surfactant, the anti-clogging agent is an organic solvent, the antioxidant, light stabilizer and metal chelating agent are combined with other component molecules by chemical bonding to form a stable complex, the solvent is a high-purity glycol ether compound, the dispersant is a combination of stearamide and higher alcohol, the dye is an organic dye with high color saturation, and the diffusion desiccant is an organosilicon diffusion desiccant.

[0027] The preparation steps are as follows (the following components are calculated by weight percentage): The base ink of the ink is 75%, the dye is 8%, and the additive is 17%; The additives include dispersants, surfactants, diffusion desiccants, anti-clogging agents, anti-fading agents and solvents, and the proportions are as follows: dispersants 8%, surfactants 20%, diffusion desiccants 12%, anti-clogging agents 10%, anti-fading agents 10%, and solvents 40%; The anti-fading agent includes an antioxidant, a light stabilizer and a metal chelating agent, and the proportion of the antioxidant is 25%, the light stabilizer is 40%, and the metal chelating agent is 35%.

[0028] The prepared 75% ink base ink, 8% dye and 17% additive are mixed together and added into a reactor for mixing and stirring. The stirring time is 20 minutes to form a uniform mixture. During the stirring process, the temperature is controlled at 28°C, the stirring speed is controlled at 760rpm, and the mixture is filtered through a filter bag with a fineness of 10μm to obtain the inkjet printer ink. Embodiment 3

[0029] An inkjet printer ink, comprising a base ink, a dye and an additive; wherein the base ink, the dye and the additive account for: 80% of the base ink; 5% of the dye; and 15% of the additive; The auxiliary agent includes a dispersant, a surfactant, a diffusion drying agent, an anti-clogging agent, an anti-fading agent and a solvent, wherein the proportion of the dispersant, the surfactant, the diffusion drying agent, the anti-clogging agent, the anti-fading agent and the solvent in the auxiliary agent is as follows: dispersant 6%; surfactant 18%; diffusion drying agent 15%; anti-clogging agent 12%; anti-fading agent 10%; solvent 39%; The anti-fading agent includes an antioxidant, a light stabilizer and a metal chelating agent, wherein the proportions of the antioxidant, the light stabilizer and the metal chelating agent in the anti-fading agent are as follows: antioxidant 28%; light stabilizer 42%; metal chelating agent 30%.

[0030] Specifically, the dispersant is an environmentally friendly and efficient dispersant, the surfactant is a low-foaming surfactant, the anti-clogging agent is an organic solvent, the antioxidant, light stabilizer and metal chelating agent are combined with other component molecules by chemical bonding to form a stable complex, the solvent is a high-purity glycol ether compound, the dispersant is a combination of stearamide and higher alcohol, the dye is an organic dye with high color saturation, and the diffusion desiccant is an organosilicon diffusion desiccant.

[0031] The preparation steps are as follows (the following components are calculated by weight percentage): Among them, the printing ink base ink is 80%, the dye is 5%, and the additives are 15%; the additives include dispersants, surfactants, diffusion desiccants, anti-clogging agents, anti-fading agents and solvents, and are as follows: dispersants are 6%, surfactants are 18%, diffusion desiccants are 15%, anti-clogging agents are 12%, anti-fading agents are 10%, and solvents are 39%; anti-fading agents include antioxidants, light stabilizers and metal chelating agents, and are as follows: antioxidants are 22%, light stabilizers are 35%, and metal chelating agents are 43%.

[0032] The prepared 80% ink base ink, 5% dye and 15% additive are mixed together and added into a reactor for mixing and stirring. The stirring time is 30 minutes to form a uniform mixture. During the stirring process, the temperature is controlled at 38°C, the stirring speed is controlled at 850rpm, and the mixture is filtered through a filter bag with a fineness of 10μm to obtain the inkjet printer ink. Embodiment 4

[0033] An inkjet printer ink, comprising a base ink, a dye and an additive; wherein the base ink, the dye and the additive account for: 78% of the base ink; 6% of the dye; and 16% of the additive; The auxiliary agent includes a dispersant, a surfactant, a diffusion drying agent, an anti-clogging agent, an anti-fading agent and a solvent, wherein the proportion of the dispersant, the surfactant, the diffusion drying agent, the anti-clogging agent, the anti-fading agent and the solvent in the auxiliary agent is as follows: dispersant 7%; surfactant 22%; diffusion drying agent 18%; anti-clogging agent 15%; anti-fading agent 10%; solvent 28%; The anti-fading agent includes an antioxidant, a light stabilizer and a metal chelating agent, wherein the proportions of the antioxidant, the light stabilizer and the metal chelating agent in the anti-fading agent are as follows: antioxidant 28%; light stabilizer 38%; metal chelating agent 34%.

[0034] Specifically, the dispersant is an environmentally friendly and efficient dispersant, the surfactant is a low-foaming surfactant, the anti-clogging agent is an organic solvent, the antioxidant, light stabilizer and metal chelating agent are combined with other component molecules by chemical bonding to form a stable complex, the solvent is a high-purity glycol ether compound, the dispersant is a combination of stearamide and higher alcohol, the dye is an organic dye with high color saturation, and the diffusion desiccant is an organosilicon diffusion desiccant.

[0035] The preparation steps are as follows (the following components are calculated by weight percentage): Among them, the printing ink base ink is 78%, the dye is 6%, and the additives are 16%; the additives include dispersants, surfactants, diffusion desiccants, anti-clogging agents, anti-fading agents and solvents, and are as follows: dispersants 7%, surfactants 22%, diffusion desiccants 18%, anti-clogging agents 15%, anti-fading agents 10%, and solvents 28%; the anti-fading agents include antioxidants, light stabilizers and metal chelating agents, and are as follows: antioxidants 28%, light stabilizers 38%, and metal chelating agents 34%.

[0036] The prepared 78% ink base ink, 6% dye and 16% additive are mixed together and added into a reactor for mixing and stirring. The stirring time is 40 minutes to form a uniform mixture. During the stirring process, the temperature is controlled at 50°C and the stirring speed is controlled at 1000 rpm. The mixture is filtered through a filter bag with a fineness of 10 μm to obtain the inkjet printer ink. Embodiment 5

[0037] An inkjet printer ink, comprising a base ink, a dye and an additive; wherein the base ink, the dye and the additive account for 70% of the base ink, 10% of the dye and 20% of the additive; The auxiliary agent includes a dispersant, a surfactant, a diffusion drying agent, an anti-clogging agent, an anti-fading agent and a solvent, wherein the proportion of the dispersant, the surfactant, the diffusion drying agent, the anti-clogging agent, the anti-fading agent and the solvent in the auxiliary agent is as follows: dispersant 5%; surfactant 15%; diffusion drying agent 20%; anti-clogging agent 15%; anti-fading agent 15%; solvent 30%; The anti-fading agent includes an antioxidant, a light stabilizer and a metal chelating agent, wherein the proportions of the antioxidant, the light stabilizer and the metal chelating agent in the anti-fading agent are: antioxidant 30%; light stabilizer 45%; metal chelating agent 25%.

[0038] Specifically, the dispersant is an environmentally friendly and efficient dispersant, the surfactant is a low-foaming surfactant, the anti-clogging agent is an organic solvent, the antioxidant, light stabilizer and metal chelating agent are combined with other component molecules by chemical bonding to form a stable complex, the solvent is a high-purity glycol ether compound, the dispersant is a combination of stearamide and higher alcohol, the dye is an organic dye with high color saturation, and the diffusion desiccant is an organosilicon diffusion desiccant.

[0039] The preparation steps are as follows (the following components are calculated by weight percentage): The ink base ink comprises 70%, dye 10%, and additives 20%; the additives are mixed in the proportions of dispersant 5%, surfactant 15%, diffusion drying agent 20%, anti-clogging agent 15%, anti-fading agent 15%, and solvent 30%; the anti-fading agent is mixed in the proportions of antioxidant 30%, light stabilizer 45%, and metal chelating agent 25%.

[0040] The prepared 70% ink base ink, 10% dye and 20% additives (the additives include 5% dispersant, 15% surfactant, 20% diffusion drying agent, 15% anti-clogging agent, 15% anti-fading agent, 30% solvent, wherein the anti-fading agent includes 30% antioxidant, 45% light stabilizer and 25% metal complexing agent) are mixed together and added into a reactor for mixing and stirring. The stirring time is 25 minutes to form a uniform mixture. During the stirring process, the temperature is controlled at 45°C, the stirring speed is controlled at 900rpm, and the mixture is filtered using a filter bag with a fineness of 10μm to obtain the inkjet printer ink.

[0041] Comparative Example: As shown in Table 1, the comparative examples 1-5 respectively selected common inks in the prior art.

[0042] Performance test: The inkjet printer inks prepared in the above Examples 1-5 and the common inks in Comparative Examples 1-5 were tested for color stability, water resistance, and light resistance. The test data are shown in Table 1.

[0043] Table 1 Performance test data of the inkjet printer inks prepared in Examples 1-5 and the common inks of Comparative Examples 1-5.

[0044] Comparative Example 1 Example 1 Comparative Example 2 Example 2 Comparative Example 3 Example 3 Comparative Example 4 Example 4 Comparative Example 5 Example 5 Color stability good excellent excellent excellent good excellent Difference excellent good excellent Water resistance Difference excellent good excellent good excellent good excellent good excellent Lightfastness good excellent excellent excellent good excellent good excellent good excellent evaluate good excellent good excellent good excellent good excellent good excellent .

[0045] Color stability test, using Hangzhou Color Spectrum + desktop spectrophotometer + CS-820N; Water resistance test: Apply the ink on a standard test board. After the ink is dry, place the test board in water and observe the test results: observe whether the ink surface is peeling, fading or damaged, as well as the degree and area of ​​peeling or damage; Lightfastness test: Under specified conditions, the test sample and the blue wool standard sample are exposed to a xenon arc lamp at the same time, and the lightfastness is evaluated by finding a level in the blue wool standard sample that is similar to the change in the test sample.

[0046] It can be seen from the test data in Table 1 that, compared with the ordinary ink in the prior art, the comprehensive performance of the inkjet printer ink prepared by the preparation process of the present invention has been significantly improved, and it shows excellent performance in terms of color stability, water resistance, light resistance, etc. In practical applications, suitable ink base inks, dyes and additives can be selected according to different printing requirements and environmental conditions to achieve the best printing effect.

[0047] The above is a detailed introduction to an inkjet printer ink provided by the present invention. Specific embodiments are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. An inkjet printer ink, characterized in that: include: Ink base inks, dyes and additives; The proportion of ink base ink, dyes and additives is as follows: Ink base ink 70-85%; Dye 3-9%; Additives 6-27%; The auxiliary agent includes a dispersant, a surfactant, a diffusion drying agent, an anti-clogging agent, an anti-fading agent and a solvent, wherein the proportion of the dispersant, the surfactant, the diffusion drying agent, the anti-clogging agent, the anti-fading agent and the solvent in the auxiliary agent is as follows: Dispersant 5-10%; Surfactant 15-25%; Diffusion desiccant 10-20%; Anti-clogging agent 10-20%; Anti-fading agent 10-15%; Solvent 30-50%; The anti-fading agent includes an antioxidant, a light stabilizer and a metal complexing agent, wherein the proportion of the antioxidant, the light stabilizer and the metal complexing agent in the anti-fading agent is: Antioxidants 20-30%; Light stabilizer 30-50%; Metal complexing agent 30-40%.

2. The inkjet printer ink according to claim 1, characterized in that: The dispersant is an environmentally friendly and efficient dispersant.

3. The inkjet printer ink according to claim 1, characterized in that: The surfactant is a low foaming surfactant.

4. The inkjet printer ink according to claim 1, characterized in that: The anti-clogging agent is an organic solvent.

5. The inkjet printer ink according to claim 1, characterized in that: The antioxidant, light stabilizer and metal complexing agent are combined with other component molecules by chemical bonding to form a stable complex.

6. The inkjet printer ink according to claim 1, characterized in that: The solvent is a high-purity glycol ether compound.

7. The inkjet printer ink according to claim 1, characterized in that: The dispersant is a combination of stearyl amide and a higher alcohol.

8. The inkjet printer ink according to claim 1, characterized in that: The dye is an organic dye with high color saturation.

9. The inkjet printer ink according to claim 1, characterized in that: The diffusion desiccant is an organic silicon diffusion desiccant.

10. The inkjet printer ink according to claim 1, characterized in that: The preparation steps are as follows: S1, weigh 70-85% of the base ink, 3-9% of the dye and 6-27% of the additive according to the proportion, and put them into different containers respectively, then weigh the dispersant, surfactant, diffusion drying agent, anti-clogging agent, anti-fading agent and solvent in the additive according to the proportion of 5-10% of the dispersant, 15-25% of the surfactant, 10-20% of the diffusion drying agent, 10-20% of the anti-clogging agent, 10-15% of the anti-fading agent and 30-50% of the solvent; S2, mixing the dispersant and the surfactant together and stirring evenly to ensure that they can be fully dispersed in the ink base ink, then adding the mixed dispersant and surfactant into the ink base ink, and starting preliminary mixing and stirring for 20-40 minutes, the temperature is controlled at 28-60°C, and the stirring speed is 750-1300rpm; S3, add the diffusion drying agent, anti-clogging agent and anti-fading agent to the preliminary mixture, continue to stir evenly to ensure that these additives can be evenly dispersed in the ink. At this time, raise the temperature to 28-60°C, keep the stirring speed unchanged, and continue stirring for 20-40 minutes; S4, adding the solvent to the mixture for final mixing and stirring for 20-40 minutes, maintaining the temperature at 28-60°C, and increasing the stirring speed to 750-1300rpm. After the mixing is completed, the mixture is filtered using a filter bag with a fineness of 10μm to remove any impurities and particles that may be present.