RU2448843C1 - Data carrier with removable protective layer - Google Patents

Abstract

FIELD: printing.

SUBSTANCE: invention relates to lottery tickets such as "instant lottery", payment cards, as well as any other data carriers that contain words, numbers, symbols or messages hidden from visual perception with the removable layer, intended to specify the password, gain or other information necessary for the user. The data carrier comprises a blank sheet in a form of paper, cardboard, plastic or other sheet, on at least one side of which graphic reproductions and other functional information is printed with typographic or hard copy method. On the data carrier there is at least one field in which the game or other concealed information is printed, covered with an optically transparent non-removable layer, and on top of it with removable protective layer. At that the removable protective layer is made in the form of a perforated mask.

EFFECT: invention provides a creation of a data carrier with a smaller number of removable layers, which provides reliable protection from appearance of hidden information, including by showthrough.

6 cl, 4 dwg

Description

The invention relates to “instant lottery” type lottery tickets, payment cards, as well as to any storage media that contain words, numbers, symbols or messages hidden from visual perception with the help of a removable layer, intended to indicate a password, winnings or other necessary for the user information.

The main requirement for information carriers that contain fields with hidden information is to ensure that it is impossible to identify information hidden under the erased layer without destroying this layer. For the purpose of identification, they mainly use high-intensity light, which allows viewing hidden information through the substrate material without affecting the removable protective layer. As a rule, multilayer coatings are used to ensure compliance with this requirement. In particular, according to the patent of the Russian Federation No. 2135249 (A63F 3/06, B42D 15/00, G07C 15/0, publ. 08/27/1999) a masking pattern is applied over the game signs, which lies under an opaque erasable material.

Lottery tickets with multilayer coatings are known according to US patents No. 5,542,710, No. 4,787,950, No. 5,407,535, No. 4,191,376.

As a prototype, US patent No. 7,455,323 (publ. 12.01.2006) was selected as a storage medium, for example, a lottery ticket, which includes a sheet with hidden information and a removable opaque coating applied over it. The removable layer is applied to the fixing layer, which is, for example, varnish, which protects the printed hidden information from destruction when the erasable opaque coating is removed. To ensure reliable protection of the information to be hidden, an additional bonding layer and a metal (holographic) layer are deposited on top of the erased opaque layer, which are removed together with the erased layer.

The main disadvantages of the inventions described above are the complexity of their manufacture, the need to use various expensive materials, since it is necessary to apply several layers to form a coating that makes it impossible for the visual perception of hidden information.

The objective of the invention is to provide a storage medium with a protective removable coating, characterized by a smaller number of protective removable layers compared to analogues and providing reliable protection against the occurrence of hidden information, including by transmission, without destroying the integrity of the protective layer.

The technical result of the invention is to reduce the volume of equipment and materials needed to form a protective removable layer on the information carrier and the ability to use both sides of the information carrier to place any additional data (advertising, serial numbers and information about the ticket manufacturer, etc.).

The technical result is achieved by the fact that in the information carrier, which includes a form in the form of paper, cardboard, plastic or other sheet, at least on one side of which graphic images and other functional information are printed or printed, and there is at least one field in which game or other hidden information is printed, coated with an optically transparent non-removable layer and, on top of it, a removable protective layer, characterized in that the removable protective layer is made in the form perforated mask, the total area of the holes of which is 1-15% of the area of the removed protective layer (with a uniform distribution of the holes). The diameter of the holes in the perforated mask is 3-20% of the height of the characters to be hidden (2-10 mm). The optically transparent non-removable layer is larger in area than the removable protective layer, protecting additional information from damage. The holes in the perforated mask are randomly or orderly, in the form of lines or patterns.

The invention is illustrated by figures. Figure 1 shows the sequence of layers on the field with hidden information. Figure 2 presents a protective removable coating according to the invention when illuminated from below. Figure 3 presents a protective removable coating according to the invention when illuminated from the side. Figure 4 presents the storage medium on which the protective removable coating according to the invention hides the bar code.

A storage medium in the present description refers to any paper, cardboard or plastic form, control ticket, travel ticket, lottery ticket, coupon, payment card or any other storage medium having data of any nature hidden under a protective layer to be deleted (letters, numbers, signs or characters).

The perforated mask on the removable protective layer in the storage medium described above performs the function of a masking pattern that prevents identification of hidden letters, numbers or symbols.

The storage medium described above is made as follows.

The storage medium 1 (Fig. 1) according to the invention can be made of paper, cardboard or plastic and has at least one side on which the field with hidden information 2 is placed, identification elements, fields with informational inscriptions, symbols, fields for placement advertising and other necessary information. Letters, symbols and signs in these fields can be applied by any conventional printing method, including a laser printer. On the field with hidden information 2 and, if necessary, on the identification elements, a transparent, non-removable layer of varnish or film 3 is applied, which extends beyond the boundaries of the removed protective layer. Transparent non-removable layer 3 allows you to protect identification elements (for example, lottery ticket serial number) and hidden data from damage, and also helps to remove an opaque layer to be deleted without residue. A removable protective layer 4 with a perforation 5 having a working zone 6 is applied to a transparent non-removable layer. The working zone is located above the hidden characters and should not be visually different from the rest of the removed layer.

To create a removable coating according to the invention, commonly used types of erasable paint are used, for example, solvent paint or UV curing paint.

The removable protective coating is applied to the information to be hidden using a screen mask having perforation. The layout of the perforated mask (stencil) is made using a graphical editor. Paint is applied using a stencil on a transparent, non-removable substrate layer. The holes in the perforated mask should be evenly distributed and can be arranged randomly or orderly, in the form of lines or patterns. Such holes transmit light and illuminate the field with hidden information when illuminated from below (figure 2). The same holes change the relief of the removed protective layer, preventing the reading of hidden information when illuminated from the side (Fig.3). Therefore, under the coating according to the invention, it is impossible to visually distinguish the content of the information to be hidden without destroying the protective layer, including by transmission with intense light from below or from the side. So reliable hiding of information on paper is ensured by applying only two layers to form a protective layer, which requires fewer materials used in comparison with the prototype, reduces the time of manufacture of the information carrier.

To achieve a technical result, the diameter of the holes of the perforated mask can be, for example, about 0.4 mm with a height of hidden characters of 2-4 mm. If the diameter of the holes is significantly less than indicated, the holes will not let in enough light to illuminate the hidden information. At the same time, if the diameter of the holes is significantly larger, hidden characters can be identified through the holes. The number of holes in the removed layer is calculated based on their total area and may be equal to 1-15% of the area of the removed layer. For example, let the total area of the holes be equal to 10% of the area of the removed layer with a uniform distribution of the holes. Then the number of holes X is calculated as follows:

X = (S * 10%) / (3.14 * D * D / 4), where:

S is the area of the removed layer;

D is the diameter of the hole.

For example, if the area of the removed layer is 30 mm with a hole diameter of 0.4 mm, then the number of holes will be 24.

A protective removable layer with such holes ensures the inaccessibility of the visual perception of hidden information without destroying the protective layer when applying for this purpose a smaller number of layers in comparison with the prototype and using fewer materials and equipment. Also, as a hidden information, a bar code can be used, which is also impossible to identify without destroying the protective removable coating according to the invention (Fig. 4).

Both sides of the information carrier can be used to place the necessary information, while the use of perforation on the protective removable layer allows you to reliably hide information under this layer, without using other additional means and methods.

Claims (6)

1. A storage medium, including a form in the form of paper, cardboard, plastic or other sheet, at least on one side of which graphic images and other functional information are printed or printed, and there is at least one field in which the game is printed or other information to be covered, covered with an optically transparent non-removable layer and a removable protective layer over it, characterized in that the removable protective layer is made in the form of a perforated mask. 2. The storage medium according to claim 1, characterized in that the total area of the holes of the perforated mask is 1-15% of the area of the removed protective layer. 3. The storage medium according to claim 1, characterized in that the diameter of the holes in the perforated mask is 3-20% of the height of the characters to be hidden, the height of the characters to be hidden is 2-10 mm. 4. The storage medium according to claim 1, characterized in that the optically transparent non-removable layer is larger in area than the removable protective layer, preventing additional information from being damaged. 5. The storage medium according to claim 1, characterized in that the holes in the perforated mask are randomly or orderly. 6. The storage medium according to claim 5, characterized in that the holes in the perforated mask are arranged in the form of lines or patterns.

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