JPH07200758A - Code mark display body - Google Patents

Abstract

PURPOSE:To reproduce an exact code by providing a timing bit which is adjacent to a module, used as the reference when reading is performed and composed of transparent fluorescent ink and using the timing bit as the reference. CONSTITUTION:In a code mark 6, squares of (m) column X (n) line is defined as one module and the square is selectively painted out with black ink, etc. A timing bit 7 is adjacent to the code mark 6 and printed to be formed with transparent fluorescent ink which absorbs less light beams in a visible area and an infrared ray area in order to confirm the location of the module. A light emission element which can irradiate ultraviolent rays and the light receiving element reading the light emission of the timing bit 7 are added to a hand scan reader. The code recorded on the code mark 6 is read taking the reading timing of the module by using the timing bit 7 as a reference.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a code mark display body in which a cell represented by m columns and n rows is one module.

[0002]

2. Description of the Related Art A lot of bar codes for product management are attached to the packaging of products and the like, but in recent years, in place of this bar code, the cells represented by m columns × n rows are one module, Code marks (for example, Carla code, 2 and the like) formed by selectively filling the cells with a colored ink such as black
Dimensional barcodes) are attracting attention. This is because the bar code records the code one-dimensionally, whereas the code mark records the code two-dimensionally, so if the module has a small mesh, the amount of information that exceeds the bar code is large. On the other hand, on the other hand, there is an advantage that the code mark can be written by hand if the mesh is large.

To read the code recorded on such a code mark, a handy type code reader is used to cover the entire code mark attached to the display,
Scan the light in the visible region or infrared region two-dimensionally through an optical system including a rotating mirror and detect the reflected light by a light receiving element to read it (see, for example, JP-A-2-268382), or a code mark. Is irradiated with light and the reflected light is collectively read by a two-dimensional solid-state imaging device (see, for example, Japanese Patent Publication No. 4-13752). However, these conventional readers are very expensive because they have a complicated structure as described above.

Therefore, the inventors of the present invention have a groove portion 2 in which the code mark display member 5 can be moved, and a plurality of groove portions inside the groove portion in a direction (row direction) orthogonal to the moving direction (column direction) of the code mark display member. An inexpensive reading device 1 (hereinafter referred to as a hand scan) which is provided with the light emitting element and light receiving element groups 3 and 4 and reads all the codes attached to the code mark display body 5 while moving the code mark display body 5 with the groove 2 by hand. We are developing a reading device) (see Fig. 1).

However, in such a hand scan reading device, although the operator manually moves the code mark display body, the manual moving speed is not constant as shown in FIG. For example, in a white (or black) continuous code mark display body as shown in FIG. 1, it is difficult to read the timing, and as a result, an inconvenient code cannot be read.

In order to eliminate the above-mentioned inconvenience, it is conceivable to provide a timing bit as a reference for reading the code adjacent to the code mark.

However, if the timing bit is provided with black ink or the like similar to the code mark, the conventional reading device may read the timing bit as a part of the code mark and reproduce an incorrect code.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems. In a conventional reading device, an incorrect code is reproduced by reading a timing bit as a part of a code mark. Further, it is an object of the present invention to provide a code mark display body capable of reproducing an accurate code by using a timing bit as a reference in a hand scan reader.

[0009]

According to a first aspect of the present invention, modules having cells represented by m columns × n rows are arranged in a column direction, and the cells in the modules are selectively selected. A code mark display in which a specific code is formed by selectively filling with colored ink, characterized by having a timing bit made of transparent fluorescent ink as a reference when reading adjacent to the module. It is a code mark display.

[0010]

According to the first aspect of the present invention, the conventional reading device can read only the code mark without reading (detecting) the timing bit made of transparent fluorescent ink. Further, in the hand scan type reading device, for example, ultraviolet rays can be charged to detect light emission from the timing bit, and the code mark can be accurately read with reference to the light emission.

The present invention will be described in detail below.

The code mark display according to the present invention is formed on various papers such as high quality paper, coated paper and art paper, and various resins such as polyester resin and vinyl chloride resin.

The code mark according to the present invention means m rows ×
The cells in the nth row are one module, and the cells are selectively painted with black ink or the like. That is,
If the cells of m = 2 and n = 2 are one module, then 2 ⁴
= 16 types of information can be recorded. The shape of the cells is not limited to the square, but may be rectangular or circular. And depending on the amount of information to be recorded,
Arrange in the column direction.

The timing bit according to the present invention is adjacent to the code mark and is formed by printing with a transparent fluorescent ink having a small absorption in the visible region and the infrared region in order to confirm the position of the module. The shape of the cells is not limited to the square, but may be rectangular or circular. Further, the number of timing bits may be provided as many as the number of the modules adjacent to the code mark (see FIG. 3 (a)), but the manual moving speed is as shown in FIG. , A large part that may not be read at a constant moving speed (eg the beginning and end of a row of modules)
The timing bit may be used as a reference only when reading that portion (see FIG. 3B).

The transparent fluorescent ink is, for example, ZnO: Z.
n (emission wavelength 505 nm for excitation light having a wavelength of 365 nm or 254 nm), Zn ₂ GeO ₂ : Mn (emission wavelength 534 nm), Zn ₂ SiO ₄ : Mn (emission wavelength 5
25 nm), Sr ₅ (PO ₄ ) ₃ CI: Eu (emission wavelength 445 nm), Y ₂ O ₂ S: Eu (emission wavelength 624 n
m), 3 (Ba, Mg) 0.8Al ₂ O ₉ : Eu, Mn
(Emission wavelength 514 nm), ZnS: Cu (emission wavelength 52
8 nm), ZnS: Mn (emission wavelength 586 nm), 0.
A pigment or dye having fluorescence such as 5MgF ₂ , 3.5MgO, GeO ₂ : Mn (emission wavelength 655 nm) is dispersed in a resin to form an ink.

These transparent fluorescent inks emit yellow or orange when exposed to ultraviolet rays.

The hand scan reading device for reading the code of the code mark display according to the present invention has a light emitting element capable of irradiating ultraviolet rays and a light receiving element for reading the light emission of the timing bit.

Then, the code recorded in the code mark is read while taking the timing of reading the module with reference to the timing bit. Further, the conventional reading device can read only the code mark without reading the timing bit made of transparent fluorescent ink.

[0019]

EXAMPLES Examples according to the present invention will be described in detail below.

Coated paper (Hokuetsu Paper Mills, trade name Clean Coat) was used as the paper. 2 rows on the paper
The code marks 6 each having 10 cells in two rows and arranged in the column direction were formed by an offset printing method using black ink. Each square is a square with a side of 2 mm (see FIG. 3 (a)).

Next, a transparent fluorescent ink having the following composition was produced and a timing bit 7 was formed by a lithographic offset printing method. The timing bit is a square bit provided directly under each module.

Transparent fluorescent ink composition Fluorescent pigment (ZnO: Zn, particle size 1.5 μm) 45% by weight Resin (rosin modified phenolic resin) 20% by weight Drying oil (flax polymerized oil) 15% by weight Solvent (high boiling point petroleum oil System solvent) 19% by weight Wax (polyethylene wax) 1% by weight

It is needless to say that the obtained code mark display body can read the code with the conventional reading device, and even with the hand scan type reading device, the code recorded in the accurate code mark with reference to the timing bit. Could be read.

[0024]

As described above, according to the code mark display body of the present invention, the conventional reading device does not reproduce an erroneous code due to reading the timing bit as a part of the code mark. Further, in the hand scan reader, an accurate code can be reproduced by using the timing bit as a reference.

[0025]

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a hand scan reading device and a code mark display body according to the present invention.

FIG. 2 is an explanatory diagram showing a relationship between a moving distance and a speed of a code mark display body.

3A and 3B are plan explanatory views showing code marks and timing bits.

[Explanation of symbols]

 1 Hand Scan Reader 2 Groove 3, 4 Light-Emitting Element, Light-Receiving Element Set 5 Code Mark Display 6 Code Mark 7 Timing Bit

Claims (1)

[Claims] 1. A specific code is provided by arranging modules having cells represented by m columns × n rows in the column direction and selectively filling cells in the modules with colored ink. A code mark display body to be formed, which has a timing bit made of transparent fluorescent ink as a reference when reading adjacent to the module.