KR102545140B1 - Braille pen and braille forming device including the same - Google Patents

Abstract

A braille pen according to an embodiment of the present invention includes a tip portion, a body portion connected to the tip portion on the other side and including a fastening member on one side, and an ink receiving unit coupled to the fastening member and accommodating braille ink in an internal accommodating space. and an ink tube inserted into the front end and through which the braille ink flows into the inside through one end communicating with the ink accommodating part and is discharged through the other end, wherein the ink accommodating part is accommodated inside when pressure is supplied. The braille ink is introduced into the ink tube and the braille ink flows inside the ink tube to discharge the braille ink to the other side of the ink tube.
The braille pen according to one embodiment of the present invention can form braille excellent in terms of preservation and readability even on the surface of substrates of various shapes and materials.

Description

Braille pen and braille forming device including the same {Braille pen and braille forming device including the same}

One embodiment of the present invention relates to a braille pen and a braille device including the braille pen.

Blind people often face risk factors in everyday life that are difficult for non-blind people to feel. These risk factors may be only trivial problems that can be avoided in advance for non-blind people, but they may be serious problems that are directly related to life for visually impaired people. For example, how to take medicines, power on/off state of electronic products, and other risk factors in daily life. Since these risk factors can be easily recognized through visual information such as symbols or letters, non-blind people can prevent damage in advance. However, since the visually impaired cannot accommodate such visual information, they often face various risk factors in their daily lives.

Braille is a method to solve this problem. Braille is a type of writing used by visually impaired people. One braille is composed of a total of 6 convexly protruding dots, 2 squares horizontally and 3 vertical lines. At this time, depending on how the 6 dots are extruded, 63 different dot shapes are created. And according to the rules promised in advance, each dot type is given a corresponding syllable. For example, since the word 'mother' is composed of six syllables, 'ㅇ', 'sh', 'ㅁ', 'sh', 'ㄴ', and 'l', the braille writer has a number corresponding to each syllable. The word 'Mother' can be recorded by recording braille in the form of 6 dots. Also, the facilitator who accepts information by palpating the braille letters can accept the word 'mother' by palpating the recorded braille letters in order and combining the syllables obtained by palpating. In addition, Braille has rules or regulations established in each country, such as 'Korean Braille Regulations, Unified English Braille, Japanese Braille Regulations, etc.' may be

[0003] Conventionally, as a means for forming braille characters, there has been a pressurized braille recording means. The pressurized scribble recording means presses the opposite side of the paper so that the dot pattern protrudes on the other side to record braille. However, there is a limit to recording Braille using this method on a recording medium made of a material that is difficult to press. In addition, since these braille recording means form braille by pressing on the surface opposite to the surface to be palpated, there is a problem that braille must be pressed in reverse. For example, in order to record the word 'mother' on paper with a conventional pressurized braille recording means, the braille writer writes 'l', 'b', 'sh', 'ㅁ', 'sh',' on the back of the paper. Braille characters had to be written in reverse order from the right to the left of ㅇ'. That is, the braille writer had to reverse and record the braille to be recorded.

KR 10-2016-0037394 A

The braille pen according to one embodiment of the present invention is intended to provide a braille pen capable of recording braille in a tactile direction even on the surface of various and irregular substrates by consistently discharging braille ink to form braille.

A braille forming apparatus including a braille pen according to an embodiment of the present invention is to provide a braille forming apparatus capable of quickly curing braille ink through a curing machine to form braille.

A braille pen according to an embodiment of the present invention includes a tip portion, a body portion connected to the tip portion on the other side and including a fastening member on one side, and an ink receiving unit coupled to the fastening member and accommodating braille ink in an internal receiving space. and an ink tube inserted into the front end portion, through which the braille ink is introduced into the inside through one end communicating with the ink accommodating portion, and the braille ink is discharged through the other end, wherein when pressure is supplied to the ink accommodating portion, The braille ink accommodated therein is introduced into the ink tube, and the braille ink flows in the ink tube to be discharged to the other side of the ink tube.

In addition, a support member extending from the outer circumferential surface of the body in the direction of the ink receiving portion to support the ink receiving portion may be further included.

In addition, the ink tube protrudes at a predetermined angle from the inner circumferential surface of the ink tube toward the inside of the ink tube in which the braille ink flows, and includes an ink tube protrusion that hinders the flow of the braille ink inside the ink tube. can include more

Further, the ink tube may have a diameter of 1 mm to 3 mm on an inner circumferential surface extending from one end of the ink tube through which the braille ink is introduced to the other end of the ink tube through which the braille ink is discharged.

The ink accommodating part may further include a stopper for preventing the braille ink from leaking at one side coupled to the fastening member, and the stopper may include a stopper, when the ink accommodating part is coupled to the fastening member, the ink accommodating part A central portion may be pierced by one end of the ink tube to communicate with the ink tube, and a passage for guiding the braille ink accommodated in the ink receiving unit only to the communicating ink tube may be provided.

In addition, a receiving space is formed therein to further include a cover portion for accommodating all or part of the tip portion therein, wherein at least one coupling protrusion is formed on an outer circumferential surface of the tip portion accommodated by the cover portion, and an inner circumferential surface of the cover portion. A coupling groove for accommodating the coupling protrusion is formed at a position corresponding to the coupling protrusion, and the coupling protrusion is accommodated in the coupling groove so that the front end portion can be coupled to the cover portion.

In addition, the inside of the cover part may further include a leakage preventing member formed smaller than the accommodation space inside the cover part and accommodating the other side of the front end part from which the braille ink is discharged.

In addition, at least one leakage preventing protrusion is formed on an outer circumferential surface of the other side of the tip portion accommodated in the leakage preventing member, and inside the leakage preventing member, a leakage preventing groove accommodating the leak preventing projection at a position corresponding to the leakage preventing projection is formed, and when the braille ink is discharged to the other side of the distal end in a state in which the distal end is coupled with the cover, the flow of the braille ink is blocked by the leak-preventing groove in which the leakage-preventing protrusion is accommodated, thereby preventing leakage. It is possible to prevent the braille ink from leaking to the outside of the prevention member.

In addition, the braille ink includes a monomer, an active energy ray-curable composition including a photopolymerization initiator, and a vinyl ether group so as to be cured and adhesive when irradiated with ultraviolet rays, and the monomer has a viscosity of 200,000 cPs to 300,000 cPs. Monofunctional monomers constitute 60% to 98% of the total polymerizable monomers by mass, and one of the monofunctional monomers is isobornyl acrylate constitutes 25% to 65% of the total polymerizable monomers by mass, provided One of the functional monomers being N-vinylcaprolactam may constitute 12.5% to 60% by mass of the total polymerizable monomers.

In the braille forming apparatus according to an embodiment of the present invention, the braille forming apparatus includes a braille pen, braille ink, and a curing device, wherein the braille pen has a front end, a body connected to the front end and the other side, and including a fastening member on one side. An ink accommodating part coupled to the fastening member and accommodating braille ink in an internal accommodating space, inserted into the front end portion, and through one end communicating with the ink accommodating part, the braille ink flows into the inside, and an ink tube for guiding the braille ink to be discharged through the other end to the other side of the distal end, wherein the ink accommodating unit allows the braille ink stored therein to flow into the ink tube when pressure is supplied from the outside; The braille ink includes a monomer, an active energy ray-curable composition including a photopolymerization initiator, and a vinyl ether group so as to be cured and adhesive when irradiated with ultraviolet rays, and the monomer has a viscosity of 200,000 cPs to 300,000 cPs. As much as possible, monofunctional monomers constitute 60% to 98% by mass of the total polymerizable monomers, and one of the monofunctional monomers is isobornyl acrylate constitutes 25% to 65% by mass of the total polymerizable monomers. One of the monomers is N-vinylcaprolactam, which constitutes 12.5% to 60% by mass of the total polymerizable monomers,

The curing device includes a light source unit for irradiating ultraviolet light to the discharged braille ink, wherein the light source unit includes: a first light source for irradiating light of a first wavelength, a second light source for irradiating light of a second wavelength, and a third light source for irradiating light of a second wavelength. A plurality of first light sources are regularly arranged to form a first column, and at least one second light source is disposed between the first light sources arranged in the first column. Alternately arranged to form a second column, the plurality of third light sources are regularly arranged to correspond to the first light sources in the first column to form a third column, and the first wavelength to the third wavelength The range is 360 nm to 410 nm, the first wavelength is shorter than the second wavelength and the third wavelength, and the second wavelength is configured to be shorter than the third wavelength, but the first wavelength to the third wavelength are mutually It is set to a range of different wavelengths.

The light source unit includes a fourth light source emitting light of a fourth wavelength and a fifth light source emitting light of a fifth wavelength, wherein at least one of the fourth light sources is included in the third light source listed in the third column. The plurality of fifth light sources are regularly arranged to correspond to the first light sources in the first column to form a fifth column, and the first wavelength to the fifth The wavelength range is 360 mm to 410 nm, the third wavelength is shorter than the fourth wavelength and the fifth wavelength, and the fourth wavelength is configured to be shorter than the fifth wavelength, and the first to fifth wavelengths may be set to different wavelength ranges.

In addition, the first light source, the second light source, the third light source, the fourth light source, and the fifth light source are composed of UV-LEDs, and the first wavelength, the second wavelength, the third wavelength, the The fourth wavelength and the fifth wavelength include a first range of 360 nm to 369 nm, a second range of 370 nm to 379 nm, a third range of 380 nm to 389 nm, a fourth range of 390 nm to 399 nm, and a range of 400 nm to 410 nm. It is determined as any one interval among the fifth intervals, and the first wavelength, the second wavelength, the third wavelength, the fourth wavelength, and the fifth wavelength may be determined as wavelength ranges of different intervals. there is.

The braille pen according to an embodiment of the present invention does not need to record braille in reverse on the back side of the base material, and can record braille in the same direction as the direction of palpation on the front side of the base material, thereby facilitating braille writing.

In addition, the flow of the braille ink flowing inside the ink tube is appropriately controlled so that the braille ink is not excessively discharged and an appropriate amount is discharged, and there is an effect of preventing the braille ink from leaking when pressure is not applied.

In addition, there is an effect that Braille can be recorded by being attached to the surface of various substrates regardless of the shape of the surface, the degree of smoothness, the angle of the inclined surface, and the like.

In addition, since the composition is configured to be formed at a constant height with a constant diameter, there is an effect of forming excellent braille characters in terms of excellent readability and preservation.

In addition, when braille is recorded using braille ink having a certain viscosity and height, it is possible to form braille that is accurate and highly readable, and has an effect of recording braille that is excellent in terms of preservation.

In addition, the leakage of braille ink is prevented through the cover part and the leakage preventing member, and durability is improved by protecting the other side of the front end.

The braille forming apparatus according to an embodiment of the present invention uses a curing machine in which light sources are arranged in a certain pattern to irradiate light of a complex wavelength of ultraviolet light so that braille ink can be cured efficiently, thereby curing braille more quickly and efficiently. In addition, since UV-LED is used, there is an effect of easy portability.

1 is a plan view of a braille pen according to an embodiment of the present invention;
2 is a partially enlarged view of an ink tube projection of a braille pen according to an embodiment of the present invention;
3A is a partially enlarged view of an ink receiving portion of a braille pen according to an embodiment of the present invention.
FIG. 3B is a view showing a process in which the ink accommodating part of the braille pen according to an embodiment of the present invention is coupled to the body, and FIG. 3C is a view showing a process in which the ink accommodating part of the braille pen according to an embodiment of the present invention communicates with the ink tube and is connected to the body. A drawing showing what is combined with the part
4A is a graph showing a correlation between pressure and discharge amount when the diameter of an ink tube of a braille pen according to an embodiment of the present invention is 0.5 mm;
4B is a graph showing a correlation between pressure and discharge amount when the diameter of an ink tube of a braille pen according to an embodiment of the present invention is 2.0 mm.
5A and 5B are views illustrating coupling of a tip portion and a cover portion of a braille pen according to an embodiment of the present invention;
Figure 6a is a view showing that the ink of Comparative Example 1 is ejected
Figure 6b is a view showing that the ink of Comparative Example 2 is ejected
Figure 6c is a view showing that the ink of Comparative Example 3 is ejected
Figure 6d is a view showing that the ink of Comparative Example 4 is ejected
6E is a view showing that braille ink is ejected according to an embodiment of the present invention;
7a, 7b, 7c, and 7d are enlarged views of a curing device of a braille forming device including a braille pen according to an embodiment of the present invention.
8 is a view showing a braille board that can be used in a braille forming device including a braille pen according to an embodiment of the present invention.

Objects of the invention, certain advantages and novel features will become more apparent from the following detailed description and preferred embodiments taken in conjunction with the accompanying drawings. In adding reference numerals to components of each drawing in this specification, it should be noted that the same components have the same numbers as much as possible even if they are displayed on different drawings. In addition, terms such as "one side", "other side", "first", and "second" are used to distinguish one component from another, and the components are not limited by the above terms. no. Hereinafter, in describing an embodiment of the present invention, a detailed description of related known technologies that may unnecessarily obscure the subject matter of the present invention will be omitted.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings, and like reference numerals indicate like members.

1 is a braille pen according to an embodiment of the present invention, FIG. 4a is a graph showing the correlation between pressure and discharge amount when the diameter of the ink tube of the braille pen according to an embodiment of the present invention is 0.5 mm, FIG. 5 is a graph showing the correlation between pressure and discharge amount when the diameter of the ink tube of a braille pen according to an embodiment of the present invention is 2.0 mm, and FIG. Figure 6a is a view showing that the ink of Comparative Example 1 is ejected, Figure 6b is a view showing that the ink of Comparative Example 2 is ejected, Figure 6c is a view showing that the ink of Comparative Example 3 is ejected, 6d is a view showing the ejection of the ink of Comparative Example 4, and FIG. 6e is a view showing the ejection of the braille ink according to an embodiment of the present invention.

A braille pen according to an embodiment of the present invention is coupled with a tip portion 110, a body portion 120 connected to the tip portion at the other side and including a fastening member 121 on one side, and the fastening member 121, An ink accommodating portion 130 accommodating braille ink 131 in an internal accommodating space, inserted into and positioned inside the front end portion 110, through one end communicating with the ink accommodating portion 130, the braille ink ( 131) is introduced into the inside and includes an ink tube 140 for guiding the braille ink 131 to be discharged through the other end to the other side of the front end, and when pressure is supplied from the outside of the ink receiving part 130, the inside The braille ink 131 accommodated in the ink tube 140 is introduced into the ink tube 140, and the braille ink flows inside the ink tube to be discharged to the other side of the ink tube.

As shown in FIG. 1, in the braille pen according to an embodiment of the present invention, when the ink accommodating portion 130 coupled to the body portion 120 is pressed, the braille ink 131 inside the ink accommodating portion 130 is released. It flows into the inside of the ink tube 140, flows, and is discharged through the other side of the front end 110, so that the braille ink is discharged to record braille.

Each configuration is explained.

One side of the front end portion 110 is connected to the body portion 120 and braille ink 131 flowing inside the ink tube 140 is discharged through the other side. At this time, the distal end 110 may be integrally extended with the body 120 or may be coupled to one side of the body 120. In addition, the distal end is an ink tube (hollow) inside the ink tube ( 140) is located to support and protect the ink tube 140 from external shocks so that it is not bent or broken. That is, the ink tube 140 can be inserted into the hollow inside the front end. In addition, as shown in FIG. 1 , the front end portion 110 may be formed such that its thickness gradually decreases from one side connected to the body portion 120 to the other side where the braille ink 131 is discharged.

The distal end 110 having such a shape has the other side where the braille ink 131 is ejected is formed thinly so that the area where the braille ink 131 is ejected can be accurately guided and directed, and one side connected to the body part 120 is formed. The thickness is thick, so it can be supported relatively firmly. That is, the other side of the front end 110 supporting the ink tube 140 may be formed thinner than one side of the front end 110 coupled to the body 120 .

In addition, the other end and the outside of the front end 110 may be formed of soft plastic polyvinyl chloride for durability and to prevent damage to the human body.

The body portion 120 has a fastening member 121 formed on one side to which the ink receiving portion 130 is coupled, and connected to the front end portion 110 on the other side. That is, one side of the front end portion 110 and the other side of the body portion 120 are connected, and the ink receiving portion 130 is coupled to one side of the body portion 120 . Also, since the body portion 120 is an area that can be gripped by a braille writer's hand, it may be formed of soft plastic to prevent damage to the human body.

The fastening member 121 is coupled to the ink accommodating portion 130 to fix the ink accommodating portion 130 to one side of the body portion 120 . The shape of the fastening member 121 is not limited as long as the body portion 120 and the ink accommodating portion 130 can be coupled to each other, but when pressure is applied to the ink accommodating portion 130, the braille ink 131 is fastened In order not to leak to the outside of the member 121, it is preferable that the fastening member 121 be coupled by guiding the thread of the ink receiving portion 130 so that the screw thread is constantly formed so as to be bolted. In addition, when a screw thread is formed in the fastening member 121, a sealing portion may be formed to surround an inner circumferential surface of the fastening member 121 to prevent the braille ink 131 from leaking out of the fastening member 121.

In addition, the body portion 120 may further include a support member 122 . The support member 122 may extend from the body 120 in one direction. The support member 122 provides a space to be stably seated or gripped in the braille writer's hand, and through this, the braille writer can accurately and stably record braille. In addition, the support member 122 may support at least one side of the ink receiving unit 130 . In this case, since the support member 122 supports and protects the ink accommodating portion 130, excessive pressure is applied to the ink accommodating portion 130, resulting in excessive ejection of braille ink 131 or breakage of the ink accommodating portion 130. that can be prevented.

The ink accommodating portion 130 is coupled to the body portion 120 by a fastening member 121 and accommodates braille ink 131 forming Braille characters in an internal receiving space. When pressure is supplied from the outside, the volume of the ink accommodating unit 130 is reduced so that the braille ink 131 accommodated therein flows into one end of the ink tube 140 to be described later. That is, when pressure is supplied to the ink accommodating part 130, the ink accommodating part 130 introduces the braille ink 131 accommodated therein into the ink tube 140, and transfers the braille ink 131 to the ink tube 140. ) to discharge the braille ink 131 to the other side of the front end portion 110 by flowing from the inside to the other side of the ink tube 140.

At this time, the material of the ink accommodating portion 130 is not limited as long as its volume is reduced when pressure is applied from the outside and the pressure is transmitted to the braille ink 131 so that the braille ink 131 can flow, but it has ductility. It is preferable to be formed from a material.

Also, the ink receiving unit 130 may further include a coupling portion corresponding to the coupling member 121 to be coupled to the body portion 120 by the coupling member 121 . For example, if a screw thread is formed in the fastening member 121, a corresponding screw thread may be formed in the ink accommodating part 130 to accommodate the screw thread.

In addition, UV coating may be further included on the surface of the ink receiving unit 130 . In this case, there is an effect of preventing the braille ink 131 from being cured by external ultraviolet rays.

The braille ink 131 includes a monomer, an active energy ray-curable composition including a photopolymerization initiator, and a vinyl ether group so as to be cured and adhesive when irradiated with active energy ray ultraviolet rays. The adhesive included to have adhesiveness to the braille ink 131 can impart appropriate adhesiveness to prevent the braille ink 131 ejected on the surface of the recording medium from flowing down from the recording medium, and preferably contains a vinyl ether group. can do. Braille ink 131 including such an adhesive has excellent adhesion to plastic materials. Therefore, it can be easily attached to the surface of a plastic molded body having an irregular shape such as a curved surface or unevenness, so that Braille can be expressed.

In addition, the active energy ray-curable composition included in the braille ink 131 to be cured when irradiated with ultraviolet rays is a resin that is cured by irradiation with ultraviolet light (360 nm to 410 nm), and contains an active energy ray polymerizable compound and a photopolymerization initiator. do. An active energy ray-curable composition is generally composed of an oligomer, a monomer, and an initiator.

Oligomer is the main component of the material to be finally obtained as a prepolymer, and monomer is a monomer necessary to dissolve the oligomer and impart insufficient properties. A photoinitiator, an initiator, is decomposed by being irradiated with ultraviolet light, and helps oligomers and monomers to chemically bond to form desired resins. That is, stable braille can be obtained by adding various oligomers or adhesive resins to the active energy ray-curable composition to increase adhesion and viscosity.

At this time, in order to improve the adhesiveness and viscosity of the braille ink 131, the monomers in the active energy ray-curable composition are composed of 60% to 98% of the total polymerizable monomers by mass of polymerizable monofunctional monomers, and the monofunctional monomers One of which is isobornyl acrylate is composed of 25% to 65% by mass of the total polymerizable monomers, and one of the monofunctional monomers is N-vinylcaprolactam, which is 12.5% to 60% by mass of the total polymerizable monomers. It is preferred that it consists of % mass.

Braille ink 131 including the active energy ray-curable composition as described above has appropriate adhesion and surface tension. In addition, the viscosity of the braille ink 131 may be at least 200,000 cPs so that the average height formed when the braille ink 131 is ejected onto the surface to have a diameter of D is about 1/2D. That is, when the braille ink 131 is ejected on a flat surface to have a diameter of 1.5 mm to 1.6 mm, the formed height can be 0.6 mm to 0.9 mm, which is a readable height. At this time, the viscosity of the braille ink 131 is at least 200,000 cPs or more, and may be formed at 200,000 cPs to 300,000 cPs.

Table 1 below shows braille ink 131 according to an embodiment of the present invention and comparative examples through experiments. 6 is a schematic diagram of braille formed according to the table below. 6A is the ink of Comparative Example 1, FIG. 6B is the ink of Comparative Example 2, FIG. 6C is the ink of Comparative Example 3, FIG. 6D is the ink of Comparative Example 4, and FIG. 6E is the ink of Example 1 of the present invention. It is braille ink. Table 1 below shows the test viscosity of braille ink (hereinafter referred to as 'ink viscosity') through experiments and the height formed when ejected on the surface to have a diameter of 1.5 mm (hereinafter referred to as 'unit area height'). .) is expressed as a specific numerical value.

Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Example 1 Viscosity for testing
(ink viscosity), (cPs)
10,000
30,000
50,000
100,000
200,000 Height formed when the diameter is 1.5mm (unit area height), (mm)
0.17
0.23
0.28
0.35
0.6

Comparative Example 1 has a unit area height of 0.17 mm when 10,000 cPs in Table 1 above. Comparative Example 2 has an ink viscosity of 30,000 cPs and a unit area height of 0.23 mm. Comparative Example 3 has an ink viscosity of 50,000 cPs and a unit area height of 0.28 mm. Comparative Example 4 has an ink viscosity of 100,000 cPs, and a unit area height of 0.35 mm. In Example 1, it was found that the ink viscosity was 200,000 cPs, and the unit area height at this time was 0.6 mm. Therefore, Example 1 is more suitable as braille ink than Comparative Examples 1 to 4. Since the height of Example 1 is higher than that of Comparative Examples 1 to 4, the palpater can more easily recognize that it is braille and can accept the correct meaning. As described above, braille formed to have a height of 0.6 mm to 0.9 mm when ejected on the surface to be 1.5 mm to 1.6 mm can be accurately recognized by the tactile device, and the readability of the braille is increased.

That is, the braille ink 131 is an ink that is adhered to a substrate and cured by light of a certain wavelength, and may have a viscosity of 200,000 cPs or more and be formed to a height of 0.6 mm to 0.9 mm, which is the height of a legible braille, which will be described later. It is rapidly cured by the complex wavelength irradiated by the curing machine 200 to form braille.

3A is a view of an ink accommodating unit according to an embodiment of the present invention, FIG. 3B is a view showing a process in which the ink accommodating unit of a braille pen according to an embodiment of the present invention is coupled to a body part, and FIG. 3C is an illustration of one embodiment of the present invention. It is a drawing showing that the ink accommodating part and the ink part of the braille pen according to the embodiment communicate with each other and are coupled to the body part.

As shown in FIG. 3A , a stopper 133 for preventing leakage of braille ink 131 may be further included at one side of the ink accommodating unit 130 . When the ink receiving portion 130 is coupled to the fastening member 121, as shown in FIG. 3B, the stopper portion 133 is the stopper portion of the ink receiving portion 130 by one end of the ink tube 140 as shown in FIG. 3C. As the 133 is perforated, the ink receiving portion 130 communicates with the ink tube 140.

That is, when the ink accommodating portion 130 is coupled with the fastening member 121, the central portion is perforated by one end of the ink tube 140 so that the ink accommodating portion 130 communicates with the ink tube 140, and It is possible to provide a passage for guiding the braille ink 131 accommodated in the unit 140 only to the ink tube 140 communicating with the ink receiving unit 130 .

Through this, when the user exhausts all the braille ink 131, the existing ink accommodating part 130 is removed and a new ink accommodating part 130 containing the braille ink 131 is fastened. The stopper 133 is preferably made of an elastic material so that the braille ink 131 does not leak while being perforated by one end of the ink tube 140, and more preferably made of a rubber material.

The ink tube 140 is located inside the distal end 110, and one end communicates with the ink receiving part 130 to discharge braille ink 131 to the other side of the distal end 110 through the other end. That is, the ink tube 140 is inserted into the hollow inside the front end 110, and the braille ink 131 is introduced into the inside through one end communicating with the ink receiving part 130, and the front end 110 through the other end. ) Guides the braille ink 131 to be discharged to the other side. In addition, since the inside of the ink tube 140 is a space in which the braille ink 131 flows, the inside of the ink tube 140 is It is preferably formed of a stainless material.

In addition, as shown in FIG. 2, the ink tube 140 protrudes from the inner circumferential surface at a predetermined angle toward the inside of the ink tube 140 in which the braille ink 131 flows, and is formed from the inside of the ink tube 140. An ink tube protrusion 141 may be further included to partially block the flow of the braille ink 131 . In addition, when the braille ink 131 flows from one end of the ink tube 140 through the other end of the ink tube 140, the ink tube protrusion 141 moves in the direction in which the braille ink 131 flows. protrudes vertically to effectively prevent the braille ink 131 from flowing.

That is, the ink tube protrusion 141 hinders the flow of the braille ink 131 inside the ink tube 140, so that the amount of the braille ink 131 discharged is kept constant even if excessive pressure is supplied to the ink receiving unit 130. it can be done

The ink tube protrusion 141 forms a stagnation section in the braille ink 131 flowing straight inside the ink tube 141 to prevent the braille ink 131 from being excessively discharged. That is, when the diameter of the inner circumferential surface of the ink tube 140 increases, the amount of the discharged braille ink 131 increases proportionally and there is a risk of excessive discharge. ), the flow rate and flow rate of the braille ink 131 can be controlled so that the braille ink 131 is not discharged excessively and is discharged constantly even if the diameter of the inner circumferential surface of ) increases. Here, the stagnant section refers to slowing down the flow rate of the braille ink 131 by forming a long or partially blocking the movement path of the braille ink 131 flowing inside the ink tube 140, and reducing a single area of the ink tube 140 per unit time. It refers to reducing the flow rate of the braille ink 131 passing through.

In addition, the ink tube protrusions 141 in FIG. 2 cross each other on one side and the other side of the inner circumferential surface of the ink tube 140 so as to be perpendicular to the direction in which the braille ink 141 flows inside the ink tube 140. However, the shape, height and arrangement of the ink tube protrusion 141 of the present invention are not limited thereto. The ink tube protrusions 141 may be formed to face and correspond to each other, and at this time, the height of the ink tube 141 protrusions may be less than 50% of the ink tube 140 diameter. In addition, the ink tube protrusion 141 may be formed to protrude along the inner circumference of the ink tube 140 .

The diameter of the inner circumferential surface of the ink tube 140 according to the present invention will be described with reference to FIGS. 3A and 3B. 3A and 3B show a correlation between the pressure applied to the ink container 130 and the amount of the braille ink 131 discharged according to the diameter of the ink tube 140. At this time, the diameter of the ink tube means the diameter of the inner circumferential surface of the ink tube 140 through which the braille ink 131 flows. In this graph, the horizontal axis represents the discharge amount of the braille ink 131, and the vertical axis represents the pressure supplied to the ink receiving unit 130. Here, the horizontal axis 100 means the maximum discharge amount of the braille ink 140 per unit area that can be discharged from the ink tube 140 having the corresponding diameter, and the vertical axis 100 means the maximum pressure applied to the ink accommodating part 130, that is, the ink accommodating part It means the pressure applied to the ink receiving portion 130 when 130 is compressed to the maximum.

The diameter of the inner circumferential surface of the ink tube 140 is preferably a diameter that satisfies the range of 40 to 70 in the discharge amount of the braille ink 131 in the above graph. If the value is lower than 40, it is difficult to form braille characters, and if the value is higher than 70, braille ink 131 is excessively discharged.

As shown in FIG. 3A, when the diameter of the inner circumferential surface of the ink tube 140 is 0.5 mm, it can be seen that the discharge amount of the braille ink 131 is less than 40 even though the pressure is 100. On the other hand, as shown in FIG. 3C, when the diameter of the inner circumferential surface of the ink tube 140 is 2 mm, it is appropriate because 40 or more are discharged. Therefore, it will be said that the ink tube 140 having an inner circumferential diameter of 2 mm is more preferable than the ink tube 140 having an inner circumferential diameter of 0.5 mm. That is, when the diameter of the inner circumferential surface of the ink tube 140 is 2 mm, the discharge amount of the braille ink 130 is 40 to 70 when a certain pressure is applied, so it is suitable for general use. Therefore, it is preferable in terms of braille recording that the diameter of the inner circumferential surface from one end of the ink tube through which the braille ink is introduced to the other end of the ink tube through which the braille ink is discharged is formed to be 1 mm to 3 mm.

As shown in FIG. 5 , the braille pen according to an embodiment of the present invention may further include a cover 150 having an accommodation space formed therein to accommodate all or part of the distal end 110 therein. At this time, at least one coupling protrusion 111 is formed on the outer circumferential surface of the front end portion 110 accommodated by the cover portion 150, and a position corresponding to the coupling protrusion 111 is formed on the inner circumferential surface of the cover portion 150. Coupling grooves 151 accommodating the coupling protrusions 111 are formed therein, and the coupling protrusions 111 are received and bound to the coupling grooves 151 so that the front end portion 110 can be coupled to the cover portion 150. The front end 110 can be protected from external impact by the cover 150, and even if a portion of the braille ink 131 leaks, it can be properly accommodated in the accommodation space of the cover 150 to prevent leakage to the outside. can

In addition, a leakage preventing member 153 accommodating the other side of the distal end 110 from which the braille ink 131 is discharged may be further included inside the lid. At this time, at least one leakage preventing projection 112 is formed on the outer circumferential surface of the other side of the front end 110 accommodated in the leakage preventing member 153, and the leakage preventing projection 112 and the corresponding inside of the leakage preventing member 153 are formed. A leak-preventing groove 152 for accommodating the leak-preventing protrusion 112 in position may be formed. When the braille ink 131 is discharged to the other side of the front end 110 in a state in which the front end 110 and the lid 150 are coupled, the braille ink 131) is blocked so that the leakage of braille ink 131 to the outside of the leakage preventing member 153 can be prevented.

At this time, the leak-preventing protrusion 112 may have a circularly protruding shape along the outer circumferential surface of the front end portion 110 accommodated by the leak-preventing member 153, and preferably may be formed in double as shown in FIG. Through this, the braille ink 131 can be prevented from flowing or scattering inside the cover part 150 .

In addition, since the material of the leak-preventing member 153 has elasticity, it is preferable to appropriately apply pressure to the other side of the front end portion 110. In this case, the leakage preventing member 153 is more preferably made of silicon in order to prevent the braille ink 131 from scattering inside the cover part 150 and to seal the other side of the front end part 110.

A braille forming apparatus including a braille pen according to an embodiment of the present invention includes a braille pen 100 and a hardener 200. Since the braille pen 100 has already been described in the above-described braille pen according to an embodiment of the present invention, redundant details will be omitted. Hereinafter, a curing device 200 of a braille forming apparatus including a braille pen according to an embodiment of the present invention will be described.

7a, 7b, 7c, and 7d are views illustrating a curing unit of a braille forming device including a braille pen according to an embodiment of the present invention.

The curing device 200 includes a light source unit 210 that irradiates ultraviolet light to the ejected braille ink 131 . In the light source unit 210, a plurality of light sources are disposed in a pre-designed complex wavelength pattern according to wavelengths to irradiate light with complex wavelengths to quickly and efficiently cure the braille ink 131. The light source unit 210 includes a light source for irradiating ultraviolet light.

More specifically, as shown in FIGS. 7A and 7B , the light source unit 210 of the curing device 200 in the braille body including the braille pen according to an embodiment of the present invention emits light of a first wavelength. It includes a light source 211, a second light source 212 that emits light of a second wavelength, and a third light source 213 that emits light of a third wavelength. At this time, the first light source 211, the second light source 212, and the third light source 213 are preferably UV-LEDs in terms of miniaturization and heat management. In addition, a plurality of first light sources 211 are regularly arranged to form a first column, and at least one or more second light sources 212 are alternately disposed between the first light sources arranged in the first column to form a second light source. A column may be formed, and a plurality of third light sources 213 may be regularly arranged to correspond to the first light source in the first column to form a third column.

In addition, the first wavelength of the first light source, the second wavelength of the second light source 212, and the third wavelength of the third light source 213 are preferably formed in a wavelength range of 360 nm to 410 nm, which is an ultraviolet wavelength. Specifically, the first to third wavelengths include a first range of 360 nm to 369 nm, a second range of 370 nm to 379 nm, a third range of 380 nm to 389 nm, a fourth range of 390 nm to 399 nm, and a 400 nm range. It may be determined as any one of the fifth sections in the range of 410 nm to 410 nm. In addition, since the efficiency is lowered when the sections of each wavelength overlap, it is preferable that the first to third wavelengths are selected as different wavelengths. At this time, the first wavelength is shorter than the second and third wavelengths. It is formed shorter, and the second wavelength may be formed shorter than the third wavelength. For example, when the light source unit 210 includes the first light source 211, the second light source 212, and the third light source 213, the first wavelength is a first section, a second section, or a third section. It may be determined from among, the second wavelength is determined from the second interval, the third interval or the fourth interval, and the third wavelength may be determined from the fourth interval or the fifth interval.

That is, in the braille forming device including the braille pen according to an embodiment of the present invention, the light source unit 210 includes a first light source emitting light of a first wavelength, a second light source emitting light of a second wavelength, and a third light source emitting light of a second wavelength. It includes a third light source for irradiating light of a wavelength, wherein a plurality of the first light sources are regularly arranged to form a first column, and at least one second light source is disposed between the first light sources arranged in the first column. Alternately arranged to form a second column, the plurality of third light sources are regularly arranged to correspond to the first light sources in the first column to form a third column, and the first wavelength to the third wavelength The range is 360 nm to 410 nm, the first wavelength is shorter than the second wavelength and the third wavelength, and the second wavelength is configured to be shorter than the third wavelength, but the first wavelength to the third wavelength are mutually formed at different wavelengths.

When only one type of light source is disposed to irradiate the braille ink 131, the curing of the braille ink 131 does not occur sufficiently, or it takes a long time to completely cure the braille ink 131. Accordingly, the braille ink 131 can be cured quickly and efficiently by arranging a plurality of light sources irradiating light of different wavelengths in a regular arrangement for each wavelength to realize a complex wavelength pattern.

Also, the braille forming device including the braille pen according to an embodiment of the present invention may further include a fourth light source 214 . At this time, the first light source 211, the second light source 212, the third light source 213, and the fourth light source 214 are preferably UV-LEDs in terms of miniaturization and heat management.

In addition, at least one of the fourth light sources 214 may be alternately disposed between the third light sources listed in the third column to form a fourth column. And the first wavelength of the first light source 211, the second wavelength of the second light source 212, the third wavelength of the third light source 213, and the fourth wavelength of the fourth light source 214 are in the range of 360 nm to 410 nm. It is preferable to form with a wavelength. Specifically, the first to fifth wavelengths include a first range of 360 nm to 369 nm, a second range of 370 nm to 379 nm, a third range of 380 nm to 389 nm, a fourth range of 390 nm to 399 nm, and a 400 nm range. It may be selected as any one of the fifth sections in the range of 410 nm to 410 nm.

In addition, since the efficiency is lowered when the sections of each wavelength overlap, it is preferable that the first to fourth wavelengths are selected as different wavelengths. In this case, the first wavelength is shorter than the second to fourth wavelengths, the second wavelength is shorter than the third to fourth wavelengths, and the third wavelength is shorter than the fourth and fifth wavelengths. This short formation can implement a complex wavelength pattern.

In addition, as shown in FIGS. 7C and 7D , the braille forming apparatus including the braille pen according to an embodiment of the present invention may further include a fourth light source 214 and a fifth light source 215 . At this time, the first light source 211, the second light source 212, the third light source 213, the fourth light source 214, and the fifth light source 215 are preferably UV-LEDs in terms of miniaturization and heat management. .

In addition, at least one of the fourth light sources 214 is alternately disposed between the third light sources listed in the third column to form a fourth column, and a plurality of fifth light sources 215 correspond to the third light source in the third column. They may be arranged as uniformly as possible to form a fifth column.

And the first wavelength of the first light source 211, the second wavelength of the second light source 212, the third wavelength of the third light source 213, the fourth wavelength of the fourth light source 214, and the fifth light source 215 ) The fifth wavelength is preferably formed of a wavelength in the range of 360 nm to 410 nm, which is an ultraviolet wavelength. Specifically, the first to fifth wavelengths include a first range of 360 nm to 369 nm, a second range of 370 nm to 379 nm, a third range of 380 nm to 389 nm, a fourth range of 390 nm to 399 nm, and a 400 nm range. It may be selected as any one of the fifth sections in the range of 410 nm to 410 nm.

In addition, since the efficiency is lowered when the sections of each wavelength overlap, it is preferable that the first to fifth wavelengths are selected as different wavelengths. In this case, the first wavelength is shorter than the second to fifth wavelengths, the second wavelength is shorter than the third to fifth wavelengths, and the third wavelength is shorter than the fourth and fifth wavelengths. This is formed short, and the fourth wavelength is formed shorter than the fifth wavelength, so that a complex wavelength pattern can be implemented.

That is, in the braille forming apparatus including the braille pen according to an embodiment of the present invention, the light source unit 210 of the curing machine 200 has a fourth light source for irradiating light of a fourth wavelength and a light source for irradiating light of a fifth wavelength. 5 light sources, wherein at least one of the fourth light sources is alternately disposed between the third light sources listed in the third column to form a fourth column; are regularly arranged to correspond to the first light source to form a fifth column, the range of the first wavelength to the fifth wavelength is 360 mm to 410 nm, the third wavelength is shorter than the fourth wavelength and the fifth wavelength, , The fourth wavelength is configured to be shorter than the fifth wavelength, but the first to fifth wavelengths may be set to different wavelength ranges.

8 is a view showing a braille board 300 that can be used for forming braille in the braille forming device including a braille pen according to an embodiment of the present invention.

As shown in FIG. 8 , the braille forming apparatus according to an embodiment of the present invention may further include a braille board 300 . Hereinafter, the braille board 300 will be described.

The braille plate 300 includes a support plate 310, a braille compartment 320 formed inside the support plate 310 to guide a braille pen, a partition member 321 dividing the interior of the braille compartment 320 into six spaces, and a partition member. A braille compartment hollow 322 formed by being partitioned by 321 is included.

The support plate 310 includes one or more braille cells 320, but preferably, the braille cells 320 may be formed inside the support plate 310 by maintaining 32 horizontal lines and 18 vertical lines at regular intervals. . The support plate 310 is formed of a flexible material having ductility so as to be able to record braille even on a bumpy or curved surface, etc., and is preferably formed of a silicone material in consideration of bendability and grip.

A measuring member capable of measuring a length may be included on the surface of the support plate 310 in order to measure the spacing or location of braille characters. In addition, braille examples may be included on the surface of the support plate 310 so that a braille writer can easily display braille characters.

The support plate 310 includes one or more braille cells 320 . The braille compartment 320 is formed by punching a part of the support plate 310 . In the case of including a plurality of braille spaces 320, the sleeping spaces 320 may be arranged in a row. At this time, the shape of the braille box 320 is not particularly limited, but is preferably rectangular.

The horizontal length of one braille box 320 is 3.5 mm to 4.5 mm, preferably 3.8 mm to 3.9 mm. The vertical length of one braille box 320 is 5.5 mm to 6.5 mm, preferably 6.1 mm to 6.2 mm. The distance between one braille compartment 320 and another braille compartment 320 in a horizontal position is preferably 1.6 mm to 1.7 mm, and one braille compartment 320 to another braille compartment 320 in a vertical position The distance between them is preferably 2.5 mm to 3.5 mm, preferably 3.0 mm to 3.1 mm.

The braille compartment partitioning member 321 divides the braille compartment 320 into three vertical lines and two horizontal compartments to form a total of six braille compartment hollows 322 . The braille compartment partition member 321 provides a constant guideline through which the dotted ink 131 is discharged, and supports the distal end 110 or the micro-dispensing unit 142 to absorb shaking or vibration of the braille pen 100. It enables stable recording of braille. The diameter of the braille compartment partition member 321 is 0.5 mm to 1.0 mm, preferably 0.7 mm to 0.8 mm, and the material of the braille compartment partition member 321 is made of a material that can withstand the bending of the support plate 310, It is preferably made of tungsten wire.

One dot is recorded in the hollow 322 of the Braille box. That is, one dot forming a dot shape may be recorded in one braille block hollow 322, and one braille block 310 may form one braille character by combining the dots recorded in the six braille block hollows 322. will be able to The horizontal and vertical lengths of the braille compartment hollow 322 are 1.5 mm to 1.6 mm, and the shortest distance between the centers of the braille compartment hollows 322 formed inside one braille compartment 320 is 2.0 mm to 2.5 mm, preferably. It is 2.3 mm.

In addition, the shape of the braille compartment hollow 322 is not limited as long as the braille ink 131 is ejected to form braille, but may be formed in a rectangular shape.

Although the present invention has been described in detail through specific examples, this is for explaining the present invention in detail, and the braille pen and braille forming device including the same according to the present invention are not limited thereto, and within the technical spirit of the present invention It will be clear that modifications and improvements are possible by those skilled in the art. Simple variations or modifications of the present invention all fall within the scope of the present invention, and the specific protection scope of the present invention will be clarified by the appended claims.

100: braille pen 110: distal end
111: coupling protrusion 112: leak prevention protrusion
120: body part 121: fastening member
122: support member 130: ink receiving unit
131: braille ink 133: ink stopper
140: ink tube 141: ink tube projection
150: cover part 151: coupling groove
152: leak prevention groove 153: leak prevention member
200: curing machine 210: light source unit
211: first light source 212: second light source
213: third light source 214: fourth light source
215: fifth light source 300: braille board
310: input board 320: braille box
321: braille compartment partition member 322: braille compartment hollow

Claims (11)

tip;
A body portion connected to the front end portion and the other side and including a fastening member on one side;
an ink accommodating unit coupled to the fastening member and accommodating braille ink in an internal accommodating space;
An ink tube inserted into the front end portion, through which the braille ink is introduced into the inside through one end communicating with the ink accommodating portion, and the braille ink is discharged through the other end;
The ink receiving part,
When pressure is supplied, the braille ink accommodated therein is introduced into the ink tube, and the braille ink flows inside the ink tube and is discharged to the other side of the ink tube;
The ink receiving part further includes a stopper for preventing the braille ink from leaking at one side coupled to the fastening member,
The stopper,
When the ink accommodating part is engaged with the fastening member, the central portion is perforated by one end of the ink tube so that the ink accommodating part communicates with the ink tube, and the braille ink accommodated in the ink accommodating part is transferred to the communicating ink tube. A braille pen that provides a passageway for guidance only. The method of claim 1,
The braille pen further includes a support member extending from an outer circumferential surface of the body toward the ink container and supporting the ink container. The method of claim 1,
The ink tube,
and a braille pen further comprising an ink tube protrusion protruding from an inner circumferential surface of the ink tube at a predetermined angle toward an inside direction of the ink tube in which the braille ink flows, and obstructing the flow of the braille ink inside the ink tube. . The method of claim 1,
The braille pen of claim 1 , wherein a diameter of an inner circumferential surface of the ink tube extending from one end of the ink tube through which the braille ink is introduced to the other end of the ink tube through which the braille ink is discharged is 1 mm to 3 mm. tip;
A body portion connected to the front end portion and the other side and including a fastening member on one side;
an ink accommodating unit coupled to the fastening member and accommodating braille ink in an internal accommodating space;
An ink tube inserted into the front end portion, through which the braille ink is introduced into the inside through one end communicating with the ink accommodating portion, and the braille ink is discharged through the other end;
The ink receiving part,
When pressure is supplied, the braille ink accommodated therein is introduced into the ink tube, and the braille ink flows inside the ink tube and is discharged to the other side of the ink tube;
A receiving space is formed therein to further include a cover for accommodating all or part of the front end therein,
At least one coupling protrusion is formed on an outer circumferential surface of the tip portion accommodated by the cover portion, and a coupling groove for accommodating the coupling protrusion is formed at a position corresponding to the coupling protrusion on an inner circumferential surface of the cover portion, and the coupling protrusion is formed in the coupling protrusion. A braille pen accommodated in a groove and having the distal end coupled to the cover. The method of claim 5,
a leak-prevention member formed inside the cover part smaller than the accommodation space inside the cover part and accommodating the other side of the distal end from which the braille ink is discharged;
At least one leakage preventing projection is formed on an outer circumferential surface of the other side of the front end portion accommodated in the leakage preventing member, and a leakage preventing groove for accommodating the leakage preventing projection at a position corresponding to the leakage preventing projection is formed inside the leakage preventing member. When the braille ink is discharged to the other side of the distal end in a state in which the front end is coupled to the cover, the flow of the braille ink is blocked by the leakage preventing groove in which the leakage preventing protrusion is accommodated, thereby preventing the leakage of the braille ink. A braille pen that prevents the braille ink from leaking to the outside. tip;
A body portion connected to the front end portion and the other side and including a fastening member on one side;
an ink accommodating unit coupled to the fastening member and accommodating braille ink in an internal accommodating space;
An ink tube inserted into the front end portion, through which the braille ink is introduced into the inside through one end communicating with the ink accommodating portion, and the braille ink is discharged through the other end;
The ink receiving part,
When pressure is supplied, the braille ink accommodated therein is introduced into the ink tube, and the braille ink flows inside the ink tube and is discharged to the other side of the ink tube;
The braille ink includes an active energy ray-curable composition including a monomer and a photopolymerization initiator and a vinyl ether group so as to be cured and adhesive when irradiated with ultraviolet rays,
The monomer,
Monofunctional monomers are composed of 60% to 98% of the total polymerizable monomers by mass so that the viscosity of the braille ink is 200,000 cPs to 300,000 cPs, and one of the monofunctional monomers is isobornyl acrylate, the total amount of the polymerizable monomers A braille pen composed of 25% to 65% by mass, and one of the monofunctional monomers being N-vinylcaprolactam is composed of 12.5% to 60% by mass of the total polymerizable monomers. In the braille forming device including a braille pen, braille ink, and a curing device,
The braille pen,
tip; A body portion connected to the front end portion and the other side and including a fastening member on one side; An ink accommodating part coupled to the fastening member and accommodating braille ink in an internal accommodating space; all or part of which is located inside the front end, but the braille ink flows into the inside through one end communicating with the ink accommodating part. and an ink tube for guiding the braille ink so that the braille ink is discharged through the other end to the other side of the distal end, wherein the ink accommodating unit flows the braille ink accommodated therein into the ink tube when pressure is supplied from the outside. ,
The braille ink includes a monomer, an active energy ray-curable composition including a photopolymerization initiator, and a vinyl ether group so as to be cured and adhesive when irradiated with ultraviolet rays, wherein the monomer has a viscosity of 200,000 cPs to 300,000 cPs Monofunctional monomers constitute 60% to 98% of the total polymerizable monomers by mass, and one of the monofunctional monomers is isobornyl acrylate constitutes 25% to 65% of the total polymerizable monomers by mass, provided One of the functional monomers is N-vinylcaprolactam, which constitutes 12.5% to 60% by mass of the total polymerizable monomers,
The curing machine,
A light source unit for irradiating ultraviolet light to the ejected braille ink, wherein the light source unit comprises a first light source for irradiating light of a first wavelength, a second light source for irradiating light of a second wavelength, and a light source for irradiating light of a third wavelength. Including a third light source for irradiating,
The plurality of first light sources are regularly arranged to form a first column, and at least one or more second light sources are alternately arranged between the first light sources arranged in the first column to form a second column, A plurality of third light sources are regularly arranged to correspond to the first light sources in the first column to form a third column;
The range of the first wavelength to the third wavelength is 360 nm to 410 nm, the first wavelength is shorter than the second wavelength and the third wavelength, and the second wavelength is configured to be shorter than the third wavelength, The first to third wavelengths are determined in different wavelength ranges. The method of claim 8,
The light source unit,
A fourth light source emitting light of a fourth wavelength and a fifth light source emitting light of a fifth wavelength,
At least one of the fourth light sources is alternately disposed between the third light sources listed in the third column to form a fourth column, and a plurality of fifth light sources are constant to correspond to the first light sources in the first column. are arranged to form a fifth column,
The range of the first wavelength to the fifth wavelength is 360 mm to 410 nm, the third wavelength is shorter than the fourth wavelength and the fifth wavelength, and the fourth wavelength is configured to be shorter than the fifth wavelength, The first to fifth wavelengths are set to different wavelength ranges. The method of claim 9,
The first light source, the second light source, the third light source, the fourth light source, and the fifth light source are composed of UV-LEDs,
The first wavelength, the second wavelength, the third wavelength, the fourth wavelength, and the fifth wavelength include a first range of 360 nm to 369 nm, a second range of 370 nm to 379 nm, and a second range of 380 nm to 389 nm. It is determined as any one of the 3 sections, the 4th section in the range of 390 nm to 399 nm, and the 5 section in the range of 400 nm to 410 nm,
The braille forming apparatus including a braille pen in which the first wavelength, the second wavelength, the third wavelength, the fourth wavelength, and the fifth wavelength are set within wavelength ranges of different sections. delete

Images