TW202212163A - Method of spraying gradient lenses by digital ink-jet process - Google Patents

Abstract

The invention is related to a method of spraying gradient lenses by a digital ink-jet process, which the ink-jet printer is used to spray ink of different pigment concentrations at 100% coverage on each pre-defined processing area of lens substrate, and to form color gradient changes on the surface of the lens substrate. By using the ink jet printer, it can precisely control the spraying position and coverage of ink with different pigment concentrations on the lens substrate, so as to easily form a lens with gradient variation or gradient pattern.

Description

Spraying Gradient Lenses by Digital Inkjet Process

The present invention relates to a method for spraying gradient lenses by a digital inkjet process, in particular to a method of spraying inks with different colorant concentrations on a predetermined processing area of a lens substrate at a coverage rate of 100% by an inkjet printer. , in order to easily form the lens with the required gradient change or with the gradient pattern.

According to the press, glasses mainly have important functions such as correcting vision, blocking light harmful to the eyes, reducing the intensity of visible light, and protecting the eyes from damage caused by foreign objects such as wind and sand. They are also fashion accessories for clothing styling. In order to increase the fashionability of eyeglasses, the existing eyeglasses will be dyed with various colors on the lenses.

Please refer to Chinese Patent Announcement CN104460040A "A Dyeing Method for Color-changing Lenses" and Chinese Patent Announcement CN101905208B "A Lens Dyeing Machine and Dyeing Method", which are the existing lens dyeing processing methods, which involve soaking a plurality of lens substrates in a In the dyeing solution container of the lens dyeing machine, after soaking in the dyeing solution for a period of time, the lens base material is taken out from the dyeing solution, and then the lens base material is dried to make the dye adhere to the surface of the lens base material. For lenses with color gradation changes, the lens substrate must be repeatedly immersed in a dyeing solution at different depths to complete the lens dyeing operation.

Although the immersion dyeing method disclosed in the previous patents such as "A Dyeing Method for Photochromic Lenses" in Chinese Patent Announcement CN104460040A and "A Lens Dyeing Method" in Chinese Patent Announcement CN101905208B can be made into a color gradient However, the volume of the dyeing machine takes up a lot of space, and the amount of dyeing solution required for soaking is high and the cost is high, and the dyeing solution is easy to volatilize, the color concentration is constantly changing, the quality control is difficult, and each soaking time is long. It takes time and labor, and when taking out the lens base material from the dyeing solution, care must be taken to maintain a uniform speed, otherwise it is easy to produce defective products with a high rate of defective products, and the amount of waste solution produced by the immersion dyeing method is not conducive to the increasingly stringent environmental protection requirements. In addition, the immersion process cannot provide various design graphics and diversified customization requirements, and it is difficult to respond to the diversified consumption trends of product innovation in recent years.

The reason is that the inventors of the present invention take advantage of their years of experience in the manufacturing and design of inkjet-related fields, considering that the immersion dyeing method adopted by the existing lenses has not developed an innovative process for many years, and there are still the above-mentioned deficiencies in the production and implementation of gradient lenses. With the assistance of experience and knowledge, and through ingenious thinking, the invention has been developed.

The present invention relates to a method for spraying gradient lenses by digital inkjet process, and its main purpose is to provide an inkjet printer for spraying inks of different colorant concentrations on a lens substrate with a coverage rate of 100%. Preset processing area for easy molding of lenses with required gradient changes or gradient patterns.

In order to achieve the above-mentioned purpose, the inventors have developed the following method for spraying a gradient lens by a digital inkjet process. The adjacent processing area is also equipped with several inks of different colorant concentrations, and then an inkjet printer is used to spray the surface of each processing area of the lens substrate with an ink of a colorant concentration correspondingly, so that the spraying The concentration of ink and colorant in several processing areas of the lens substrate is arranged in a gradient from dark to light or from light to dark. In addition, the ink of different color material concentration is sprayed on the surface of the corresponding sprayed processing area, and the The ink coverage rate of the surface of each processing area of the lens substrate is 100%.

As described above, the method of spraying the gradient lens in the digital inkjet process, wherein the lens substrate is washed and then dried before the ink is sprayed.

The above-mentioned method for spraying gradient lenses by digital inkjet process, wherein the lens substrate is followed by an ink curing step after the ink is sprayed, and the ink on the lens substrate is heated by a baking device to cure the ink combined with the surface of the lens substrate.

The above-mentioned method for spraying a gradient lens in a digital inkjet process, wherein the lens substrate is followed by an ink protection step after the ink curing step, so as to further spray a transparent layer on the surface of the lens substrate on which the ink is sprayed The protective layer.

Therefore, the manufacturing method of the present invention is to make the inkjet printer spray the ink with different colorant concentrations on the surface of each processing area of the lens substrate according to the computer setting, and the ejection amount, ejection density and ejection position of the ink, The range and pattern can be precisely controlled, according to this, in order to effectively save the amount of ink used, no large amount of waste solvent is generated, environmental protection and improve production efficiency, maintain quality uniformity, and provide a small amount of diversified customization requirements, etc. Beneficial.

In order to make the technical means of the present invention and the effects that can be achieved, more complete and clear disclosure, the detailed description is as follows, please refer to the disclosed drawings and drawing numbers together:

First of all, please refer to the first and second figures, which are the method of spraying gradient lenses by digital inkjet process of the present invention. The implementation steps mainly include:

A. Preparation of base material: a lens base material (1) is prepared, please refer to the third figure, and several sequentially adjacent processing areas (11) are preset on the lens base material (1). In the present invention, a first processing area (12), a second processing area (13), and a third processing area (14) are preset on the lens substrate (1) in sequence, and the lens The substrate (1) can be an optical lens or a non-optical lens, etc.;

B. Cleaning: then place the lens substrate (1) in an automated cleaning device (2), and make the automated cleaning device (2) use a degreasing agent or cleaning agent to grease the surface of the lens substrate (1), etc. After removal, rinse with pure water;

C. Drying: The cleaned lens substrate (1) is placed in a baking device (3) such as an oven for drying, and the drying temperature is about 40°C to 80°C, or is placed at room temperature naturally dry;

D. Dispensing ink: it is to prepare several inks (4) with different color material concentrations. The present invention is to coordinate the first processing area (12), the second processing area (13) and the first processing area (12), the second processing area (13) and the first processing area (13) on the lens substrate (1). Three processing areas (14), and correspondingly, three inks (4) with colorant concentrations of 80%, 60% and 20% are prepared;

E. Inkjet processing: continue to use an inkjet printer (5), so that the surface of each processing area (11) of the lens substrate (1) is respectively sprayed with an ink (4) with a colorant concentration, And the ink (4) with a colorant concentration of 80% is sprayed on the surface of the first processing area (12) of the lens substrate (1), and the ink (4) with a colorant concentration of 60% is sprayed on the lens The surface of the second processing area (13) of the base material (1), and the ink (4) with a color concentration of 20% is sprayed on the surface of the third processing area (14) of the lens base material (1), and the The ink (4) with the color material concentration of 80%, 60% and 20% respectively fills the corresponding sprayed first processing area (12), second processing area (13) and third processing area (14), and the coverage rate of the surface ink (4) of the first processing area (12), the second processing area (13) and the third processing area (14) of the lens substrate (1) is all 100%;

F. Ink curing: the lens substrate (1) sprayed with ink (4) on the surface is then placed in the baking equipment (3), and the baking equipment (3) is maintained at a predetermined curing temperature, the The curing temperature is about 80°C to 125°C, so that the solvent contained in the ink (4) on the surface of the lens substrate (1) is evaporated and volatilized, and the ink (4) with different color material concentrations is cured after being baked at a high temperature be combined with the surface of the lens base material (1) to form a color gradient change effect on the surface of the lens base material (1);

G. Ink protection: After the ink (4) is cured and bonded to the surface of the lens substrate (1), the lens substrate (1) is sprayed with ink (4) by an inkjet printer (5). The surface is further sprayed with a layer of transparent ink as a protective layer (6) to prevent the inks (4) with different color material concentrations from peeling off.

Accordingly, by means of the method of spraying a gradient lens in a digital inkjet process of the present invention, a lens product whose color changes from dark to light to gradual can be easily formed on the surface of a lens substrate (1) (as shown in the fourth figure). ], when the lens made of the present invention is assembled in the glasses, the new trend of the glasses can be added to facilitate the matching of clothing styles, and the color sprayed on the lens can also reduce the light intensity, reduce eye fatigue, etc. In addition, since the coverage rate of the ink (4) sprayed on each processing area (11) of the lens base material (1) according to the present invention is 100%, there will be no dotted marks, so that the user can see through the lens. Clear comfort when things are isochronous.

Furthermore, the manufacturing method of the present invention can set the ejection amount, ejection density, ejection position, range and pattern of inks (4) with different color material concentrations at a computer connected to an inkjet printer (5). The inkjet printer (5) is then used to sequentially spray inks (4) with different colorant concentrations on the surface of a predetermined processing area (11) of a lens substrate (1) according to the computer settings, and the ink (4) is sprayed on the surface of the predetermined processing area (11). The ejection volume, ejection density, and ejection position, range and pattern can be precisely controlled, which can effectively save the usage of ink (4), without the generation of a large amount of waste solvent, which is environmentally friendly, improves production efficiency, and maintains quality uniformity. And provide a small amount of diversified customized needs and other benefits.

The foregoing embodiments or drawings are not intended to limit the implementation of the method of spraying a gradient lens by a digital inkjet process of the present invention. The present invention sprays the ink (4) colorant on the processing area (11) of the lens substrate (1) The concentration can be arranged in a gradient from light to dark in addition to being arranged gradually. In addition to directly forming color gradient changes on the lens base material (1), the present invention can also design a graphic on the lens base material (1), and make the graphic have color gradient changes, so that the present invention can In addition to the setting of the processing area (11), the lens base material (1) may also have the setting of the non-processing area. In addition, the ink protection step of the present invention may be omitted according to the requirements of product specifications. Appropriate changes or modifications made by those with ordinary knowledge in the technical field should be regarded as not departing from the scope of the patent of the present invention.

As can be seen from the above structure and implementation, the present invention has the following advantages:

1. The method of spraying gradient lenses in the digital inkjet process of the present invention mainly uses an inkjet printer to spray inks with different colorant concentrations on each preset processing area of a lens substrate with a coverage rate of 100%, respectively, In order to form a color gradient change on the surface of the lens substrate, an inkjet printer can precisely control the spraying position and coverage of inks with different colorant concentrations on a lens substrate, so as to form a simple Lenses with color gradation changes or with gradation patterns.

2. The method of spraying gradient lenses in the digital inkjet process of the present invention can be set by the computer connected to the inkjet printer for the ejection amount, ejection density, ejection position, range and pattern of inks with different color material concentrations. Therefore, even those without professional lens tinting technicians can easily manufacture gradient lenses with good quality, so as to save the labor cost of hiring professional technicians.

3. The method of spraying the gradient lens by the digital inkjet process of the present invention accurately sprays the required amount of ink on each processing area of the lens substrate by the inkjet printer, so the ink cost can be effectively saved, and the Compared with the immersion dyeing method, the inkjet process of the present invention is faster, and can effectively improve the production efficiency of the gradient lens.

4. The method of spraying the gradient lens by the digital inkjet process of the present invention can be used to manufacture the gradient lens by an inkjet printer. Because the inkjet printer is low in cost and small in size, it can be used in every business store. Configure an inkjet printer to provide a small number of diversified customized products in response to the needs of shoppers.

To sum up, the embodiments of the present invention can indeed achieve the expected effects, and the specific structures disclosed have not only not been seen in similar products, but also have not been disclosed before the application, which fully complies with the provisions of the patent law and Request, to file an application for an invention patent in accordance with the law, and entreat it to be reviewed and granted a patent, it is truly a virtue.

1: Lens base material

11: Processing area

12: The first processing area

13: Second processing area

14: The third processing area

2: Cleaning equipment

3: Baking equipment

4: Ink

5: Inkjet Printer

6: Protective layer

Figure 1: The flow chart of the present invention

Figure 2: Schematic flow diagram of the present invention

Figure 3: Schematic diagram of inkjet processing of the present invention

The fourth figure: the three-dimensional view of the product of the present invention

1: Lens base material

2: Cleaning equipment

3: Baking equipment

4: Ink

5: Inkjet Printer

6: Protective layer

Claims (4)

A method for spraying a gradient lens by a digital inkjet process, the implementation steps of which include preparing a glass substrate, and presetting several sequentially adjacent processing areas on the lens substrate, and deploying several different colorants Concentration of ink, and then use an inkjet printer to spray the surface of each processing area of the lens substrate with an ink of a colorant concentration, so that the ink colorant sprayed on the processing area of the lens substrate The concentration is arranged in a gradient from dark to light or from light to dark. In addition, the inks of different color material concentrations are sprayed on the surface of the corresponding sprayed processing area respectively, so that the ink on the surface of each processing area of the lens substrate is Coverage is 100%. The method for spraying a gradient lens in a digital inkjet process as claimed in claim 1, wherein the lens substrate is washed and then dried before the ink is sprayed. The method for spraying gradient lenses in a digital inkjet process as claimed in claim 1, wherein the lens substrate is followed by an ink curing step after the ink is sprayed, and the ink on the lens substrate is heated by a baking device, and The ink is cured and bonded to the surface of the lens substrate. The method for spraying gradient lenses in a digital inkjet process as claimed in claim 3, wherein the lens substrate is followed by an ink protection step after the ink curing step, so as to further spray the surface of the lens substrate on which the ink is sprayed On top of a transparent protective layer.

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