JP2000108492A - Production of braille printed matter and producing member used for the method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inexpensively produce braille of a large quantity on a thick or hard material as an object by forming a shape of each protrusion for constituting a letterpress in contact shape having a flat surface at its top, and setting so that the more an area of the flat surface is decreased, the greater the thickness of the object to be printed is increased. SOLUTION: Grooves 12 molded on an intaglio 11 are formed in a rectangular shape in section. A protrusion 15 of one letterpress 14 is formed in a conical shape (in a triangular shape in section), and a bottom 22 of the groove 12 is formed in a conical state smoothly bent down in section. Since a flat surface shape of a braille is circular, the groove 12 is formed in a cylindrical shape, and the top of the protrusion 15 is also formed in a circular shape. When the grooves 12 and the protrusion 15 are pressed through a resin panel 10, the panel 10 advanced to the groove 12 as being pressed by the top (flat part 35) of the protrusion 15 is sandwiched between the top 35 of the protrusion 15 and the bottom 22 to mark a shape of the end. Further, a base end of the protrusion braille sandwiched between an outer peripheral edge E of the protrusion 15 and an upper end opening edge G of the groove 12 to mark the base end of the braille.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for printing unevenness of Braille, and more particularly to a technique for manufacturing a large number of Braille documents at low cost by using various kinds of resin-based / metal-based sealing materials and panel materials. .

[0002]

2. Description of the Related Art Braille is composed of convex points for reading by the tactile sensation of a fingertip. Conventionally, two types of methods for producing such a Braille print are known.

[0003] One is a method using a bulky material as an ink, and a method of applying a solvent-free paint such as a foamed ink or a vinyl acetate resin to a mount (JP-A-53-13).
No. 4512). This method is the same as a normal printing method in that ink is applied to a mount, and has a feature that no special skill is required.

[0004] Another method is a method of embossing a printing medium (a resin sheet or various kinds of paper) with a convex point. As a so-called braille word processor in which embossing is automated, for example, the invention described in Japanese Patent Application Laid-Open No. 5-31965 is known. This is shown in FIG.
Rod 2 driven left and right while regularly winding
The paper 1 is sandwiched between the pin-shaped convex portion 3 and a female mold (pressing mold in the specification) 4 which is synchronously moved in response to the movement of the rod 2 to stamp a convex point. This Braille printer is convenient when a document created by a so-called word processor is translated into Braille and printed out, and has a wide application range not only for home use but also for business documents and official documents.

[0005]

However, the conventional Braille manufacturing technology has a problem that a large number of Braille documents cannot be produced at low cost. When a special ink is used, the production cost is too high, and a large number of versatile documents cannot be created. In addition, when using an embossing device, the characters must be engraved one by one, so to speak, one by one.

Therefore, it is conceivable to combine the intaglio plate and the relief plate and produce Braille by pressing the intaglio plate. However, this technique has not been realized for a long time. First, there is almost no practical technology for manufacturing irregular masters like Braille at a practical level. Second, master creators who understand Braille even if they have manufacturing technology for uneven masters. Without it, production is impossible.

Another major reason that mass production of Braille is difficult is that, for example, when engraving Braille on paper, the conventional general technique has a disadvantage that the paper is easily broken when pressed using an uneven master. Braille is applied to something other than one sheet of paper, for example, an envelope, a seal, a resin sheet, or the like, because it was originally considered impossible.

However, the present applicant has succeeded in printing a large amount of Braille using ordinary paper (including thick paper) and has proposed this (Japanese Patent Application No. 10-186894; unpublished). It is not easy to create an irregular master, but it is not unreasonable, and the use of a computer has made it easier to translate Japanese and Chinese characters and alphanumeric characters into Braille, which is the background of technological development.

In this technique, a metal plate serving as an intaglio plate and a resin plate serving as a relief plate are used, and pressure is applied with a printing medium interposed between the intaglio metal plate and the relief resin plate. The basic principle is that the tip of the convex portion of the resin material serving as a relief plate is elastically deformed at the time of stamping under pressure and does not cause breakage of the paper.

[0010] However, when this method is used to apply Braille irregularities to other materials, such as various resin-based seals, vinyl sheets, and resin-based panels, the Braille irregularities may not be cleanly floated, which is a particularly serious problem. It has been found that the wear and tear of the letterpress as a resin material is so large that it cannot be ignored. Resin letterpress can withstand hundreds of thousands to millions of sheets if it is ordinary paper.However, it can be used in combination with two sheets such as a sealing material, resin-based sheet or metal panel. When a material much harder than paper, such as a plate, is used as a Braille object, it has been found that mass production is practically difficult with a resin relief printing plate.

The use of resin letterpress makes it possible to produce a large number of literary works including picture books and various report documents. However, in order to achieve barrier-free for visually impaired persons, it is necessary to further display elevator floors. Various types of normal printed seals, resin sheets, metal panel boards, such as destinations and fare displays on subway and railway ticket vending machines, various guidance displays at restaurants and public facilities, instructions for taking medicine bags at hospitals, etc. There is a need to extend the convenience of use by providing Braille irregularities.

[0012] Therefore, an object of the present invention is to prepare a braille master by pressing a braille master by a pressurizing method, and to prepare a material other than paper, in particular, an object such as a seal or an envelope having a plurality of sheets as one unit, and a resin / The object is to enable mass production of Braille at low cost, using a thick or hard material such as a metal sheet or panel as an object.

[0013]

In order to achieve the above object, a method for producing a Braille printed matter according to the present invention comprises: a metal plate which becomes an intaglio based on a film which becomes an original of a Braille document;
A method of producing a metal plate to be a relief printing plate, a method for producing a Braille print in which a printing medium is pressed between an intaglio metal plate and a relief printing metal plate, and the shape of each of the convex portions constituting the relief plate is formed on the top. It is characterized in that it is formed into a substantially conical shape having a flat portion, and the area of the flat portion of the convex portion is set smaller as the thickness of the printing object increases.

Further, a metal plate is used for both the intaglio plate and the relief plate for braille printing forming a pair of sets. And the convex part which comprises a relief plate is shape | molded so that it may exhibit the substantially conical shape which has a flat part at the top part. Also, the width of the groove that constitutes the intaglio,
While the width of the concave portion is designed to be slightly smaller than the width of the base portion of the convex portion, the depth of the concave groove is set proportionally larger as the thickness of the printing fence increases.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
As shown in FIGS. 1 and 2, a sealing material or a panel material,
Appropriate printing objects are placed on two metal plates (intaglio = female version; letterpress =
Male version) to form braille irregularities. Reference numeral 10 denotes an object to be printed, for example, a flexible resin panel material, 11 denotes a metal intaglio, 12 denotes a concave groove, 14 denotes a metal relief, and 15 denotes a projection. As a matter of course, the concave and convex positions of the concave groove 12 and the convex portion 15 correspond to each other, and necessary Braille data is recorded. The concave groove 12 and the convex portion 15 are both created based on a film serving as an original.

For film production, for example, a computer device is used. In this case, the computer device has at least a function of translating the visible characters into Braille and a font function for freely changing the width of the Braille film. The technique of forming the concave groove 12 in the intaglio 11 and forming the convex portion 15 in the intaglio 14 based on the film is an established technique (for example, JP-A-54-117368). As the material of the metal plate, for example, a zinc plate is used. This is because washing out with a molding chemical (such as nitric acid) is easy.

The reason why the method according to the present invention is capable of imprinting Braille irregularities on an object other than paper, for example, the resin panel 10 neatly is due to the action of the intaglio 11 and the relief 14 being engaged.

That is, as shown in FIG. 3, the concave groove 12 formed in the intaglio 11 has a substantially rectangular shape in cross section, and the convex portion 15 of the one relief plate 14 has a flat portion 35 at the top.
And has a substantially conical shape (substantially triangular in cross section). In addition, the bottom surface 22 of the concave groove 12 has a mortar shape that curves gently downward when viewed in cross section. In addition, since the planar shape of the Braille is circular, the concave groove 12 has a substantially cylindrical shape, and the top of the convex portion 15 also has a substantially circular shape.

Here, for example, when the concave groove 12 and the convex portion 15 are pressed with the resin panel 10 interposed therebetween, the resin panel that has entered the concave groove 12 so as to be pressed by the top (flat portion 35) of the convex portion 15 As shown in FIG. 4, 10 is sandwiched between the top portion (35) of the convex portion 15 and the bottom surface 22 of the concave groove 12, and the shape of the tip portion is stamped. The base end of the convex Braille is engraved between the outer peripheral edge E of the convex portion 15 and the upper end opening edge G of the concave groove 12.

As shown in FIG. 5, when the convex point 50 constituting the Braille is enlarged, it has a wall surface 51 rising from a general surface 59 and an upper flat surface 55. In order to form a clear convex point, it is necessary to press the upper outer peripheral edge 56 to form the upper flat surface 55 and to press the outer peripheral edge 52 of the base end of the wall surface 51. According to such a pressure molding method, it is possible to easily and clearly apply a pressure stamp at any location.

First, in the pressing operation at the tip, since the bottom surface 22 of the concave groove 12 has a mortar shape, the top portion (3
5) and the bottom surface 22 do not completely adhere to each other, and only the outer peripheral surface of the flat portion 35 where the marking is performed comes into line contact with the bottom surface 22 to press the resin sheet 10. By such an operation, it is possible to clearly press-mark the front end portion (upper outer peripheral edge 56) of the braille convex point even on a soft resin sheet having a high restoring force. This is because other parts are not strongly pressurized, and a force (pressing force of line contact) is applied only to a specific part (part of the upper outer peripheral edge 56). Even if such pressure is applied, there is no fear that the resin sheet 10 and other resin / metal materials are damaged. The same applies to double-layered sealing materials and envelopes. When one sheet of paper (copy paper or the like) is pressed in the same manner, the upper outer peripheral edge 56 is easily damaged, resulting in a result that is not practical for a Braille document.

On the other hand, the pressure forming of the base end outer peripheral edge 52 of the braille convex point is performed by the outer peripheral edge E of the convex portion 15 and the upper end opening edge G of the concave groove 12.
Done by According to international Braille standards, it is considered that the width of the base outer peripheral edge 52 is preferably 1.4 to 1.5 mm. Therefore, as shown in FIG. 6, first, the diameter W1 of the opening edge G of the upper end portion of the concave groove 12 is set to a standard value of about 1.4 to 1.5 mm, while the width of the base end of the convex portion 15 is passed. If the diameter W2 is larger than that, for example, 1.5 to 1.
It is set to about 8 mm, and at an appropriate position, the outer peripheral edge E of the convex portion 15 wraps the resin sheet 10 at the time of pressing and presses the sheet between the upper edge opening edge G of the concave groove 12 and the sheet. . By such an operation, the crossing diameter of the base end of the convex point stamped on the resin sheet 10 almost certainly achieves the international standard of 1.4 to 1.5 mm.

In the present invention, in particular, since the object for forming the Braille convex points is a double structure material such as a resin / metal sheet, a resin panel, and a sealing material, a local rolling action of the material at the time of pressurization. Also works. For this reason, the convex portion 15 needs a material and a shape different from those of pressure molding of a single sheet.

The depth of the concave groove 12 and the height of the convex portion 15 are appropriately set according to the characteristics (restoring force) and thickness of the object to be pressed.
However, in any case, the height of the convex portion 15 is set to the concave groove 12 so as to ensure the formation of the base outer peripheral portion 56 of the braille convex point.
Is set slightly smaller than the depth dimension of. There is no practical problem even if the dimensions are the same. Further, it is desirable to set the expansion angle θ of the convex portion 15 having a substantially conical shape to 45 to 60 degrees. If the expansion angle θ is too small, the protrusion 15
The formation of the base end portion (56) of the convex point by the contact and pressurization of the outer peripheral edge E of the concave groove 12 and the upper end opening edge G of the concave groove 12 becomes unclear. Before the flat surface 55 is formed, the outer peripheral edge E of the convex portion 15 and the upper edge G of the concave groove 12 are opened.
This causes the contact with the tip, which makes it difficult to press the convex tip (56) under pressure. In addition, the depth of the concave groove 12 is designed to be proportionally deeper as the thickness of the braille molding increases, so that fine braille irregularities can be pressed regardless of the thickness of the sheet or panel. This is because, if the concave groove 12 has a sufficient depth, fine irregularities can be formed by adjusting the pressure at the time of pressurization.

According to the Braille molding using the relief and intaglio, it is difficult to form a sealing material, a flexible thin resin (metal) sheet, and a resin (metal) panel having a thickness of up to about 2 mm, which have been difficult in the past. It is possible to reliably form Braille composed of minute convex points.

Of course, on these materials, various characters, figures, photographs, design paintings and the like including color printing can be usually printed, so that persons with normal vision and visually impaired can use the same sheets, stickers and panels. You can receive the same guidance. More specifically, the display of the number of floors of the elevator (seal), the menu display of the restaurant (seat), the display of the medicine bag received at the hospital (seal), the guidance at various facilities, which were conventionally difficult to implement, were considered. Board display (panel).

Again, it is difficult to produce these seals and sheets in a single item production operation using a conventional Braille word processor. It is virtually impossible to take barrier-free measures. However, according to the braille manufacturing method using the master according to the present invention, it is possible to produce the guide instruction text inexpensively and quickly in large quantities.

[0028]

As described above, according to the method and member for producing a Braille printed matter according to the present invention, a material other than paper, in particular, an object such as a seal or an envelope having a plurality of sheets as one unit, and Large-scale and inexpensive production of Braille materials, which target thick or hard materials such as resin-based / metal-based sheets and panels, becomes possible.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a braille document printing method according to the present invention.

FIG. 2 is a side sectional view showing an example of a method for printing a Braille document according to the present invention.

FIG. 3 is a view exemplifying a concave groove of a metal plate and a convex shape of a resin plate according to the present invention.

FIG. 4 is a diagram exemplifying contact between a concave groove of a metal plate and a convex portion of a resin plate according to the present invention.

FIG. 5 is an enlarged view showing braille irregularities.

FIG. 6 is a diagram illustrating dimensions of an intaglio and a relief according to the present invention.

FIG. 7 is a diagram illustrating a conventional method of embossing a Braille document.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Paper 11 Metal plate 12 Concave groove 14 Resin plate 15 Convex part 22 Bottom of concave groove

Claims (2)

[Claims] 1. A metal plate serving as an intaglio plate and a metal plate serving as a relief plate are prepared based on a film serving as an original plate of a Braille document,
A method for producing a Braille print in which a printing medium is sandwiched between an intaglio metal plate and a relief metal plate and pressed, wherein the shape of each of the projections constituting the relief plate is formed into a substantially conical shape having a flat portion at the top. A method of manufacturing a Braille print, characterized in that, as the thickness of the printing target increases, the area of the flat portion of the convex portion is set smaller. 2. A pair of pairs of a metal intaglio plate and a relief plate for braille printing, wherein the convex portion forming the relief plate has a substantially conical shape having a flat portion at the top, thereby forming an intaglio plate. The width of the groove is designed to be slightly smaller than the width of the base of the projection, while the depth of the groove is set to be proportionally larger as the thickness of the printing fence increases. A manufacturing member used in the method for manufacturing a Braille print according to claim 1.