CN111409370A

CN111409370A - Printing identification device based on infrared codes and coating and data identification method

Info

Publication number: CN111409370A
Application number: CN202010367742.3A
Authority: CN
Inventors: 李金辰; 李泰明
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2020-07-14

Abstract

The invention relates to a printing identification device of infrared codes and a coating and data identification method, and application thereof to a printer and printing paper. The identification device of the present invention includes: the identification mark is printed on printing paper, the infrared detection device is arranged in the printer, the identification mark is printed on the printing paper, the infrared detection device and the infrared light generator are arranged in the printer, the identification mark is composed of at least one group of color blocks with different gray scales and/or color differences, the adjacent color blocks with different gray scales and/or color differences respectively emit reflected light, and the infrared detection device is used for receiving the reflected light. Thereby achieving the purpose of identification. The invention has the advantages of good identification effect, low cost, simple and effective equipment and simple preparation.

Description

Printing identification device based on infrared codes and coating and data identification method

Technical Field

The invention relates to a printing identification device of infrared codes and a coating and data identification method, and application thereof to a printer and printing paper.

Background

The technical field of the existing printer has penetrated the aspects of social life, and particularly under the scenes of logistics and family application, the printer is developed towards miniaturization and low cost. This has also led to further popularity and use of printing devices. However, in office, study, and commercial printing equipment, especially when people need to touch human body or use as food packaging material in life, work and study, the quality of the printed paper needs to be stable or needs to be processed by special technical means to ensure good printing effect, for example, the paper has a service life in the sun (ultraviolet ray), whether it is waterproof and oil-proof, whether it is sensitive to alcohol in hospital environment, whether it contains harmful substances such as bisphenol a fluorescent agent, whether it can touch food, etc. Even under certain scenes, the conformity of the printing paper is ensured. Therefore, a corresponding print recognition device is often disposed on the printer and the printing paper. The paper printing device is used for detecting various states of paper and printing by using different technical parameters to ensure better printing effect.

The traditional identification technology uses a one-dimensional bar Code consisting of a plurality of black bars or white bars with different widths, which is a typical Code128 Code. As shown in fig. one, the black bars and the white bars have four different widths, which are one, two, three, and four times, respectively, and are respectively denoted by "1", "2", "3", and "4" when encoded. Besides the coded data, the Code128 Code also comprises a bar Code terminal, a check bit and a bar Code tail. The header represents the type of current barcode, i.e., one of the "ABC" codes. The tail is composed of seven units and is used for representing the termination of the bar code. The encoded data portion, i.e., the "basic unit" of the barcode, is 6 bits in one block. Where the last block (excluding the last block of the last segment) is a check bit to check whether the barcode is correctly encoded.

Due to the complexity of bar code coding and the requirements on the reliability of coded data reading and the like, modules such as 'laser or L ED illumination, camera for image acquisition, MCU for image data processing and decoding, data transmission to a lower computer such as a computer' and the like are required for the bar code acquisition and reading device, so that the bar code reading device is high in price, particularly, a moving bar code needs to be read, a camera with higher speed and higher computing capability are required for image distortion correction, the cost is multiplied, the use of the bar code in electronic products below thousand yuan is limited, for example, the bar code on the back of paper is scanned on a printer to identify limited or dozens of paper sizes or materials, then the optimal printing mode is selected according to the attribute of the paper, and if the existing bar code reading device is used, the market competitiveness is lost because the cost is increased by 10% -30%.

In addition, there are many printing techniques that detect various states of paper using infrared technology, for example,

chinese patent application with patent publication No. CN101712245A discloses an infrared signal coating and application identification method of special paper for printing and plate making. The application field of the technology is industrial printing and large-scale printing. The realization principle is that codes are formed according to the distance difference between two color blocks, namely, the codes are formed by measuring the size difference of reflected signals, and the precision requirement of the method is higher, so the cost is huge. If the precision is reduced, the resulting code will be shorter and not satisfactory for practical use.

Chinese patent application publication No. CN107175923A discloses a method, an apparatus and a printer for detecting the material of printed paper. The patent is to detect the paper material according to the infrared characteristics of the paper itself, and because the material difference of the paper itself is not large, the technology has a high precision requirement in the detection if the distinguishing effect is to be achieved, and therefore the cost is very high. Therefore, in reality, it is difficult to achieve the purpose of the invention of distinguishing different paper sheets.

Disclosure of Invention

The invention aims to solve the technical problem of providing an infrared coding-based printing identification device which has the advantages of reasonable structural design, good identification effect, low cost, simple and effective equipment and simple preparation, and comprises the following components: the printing machine comprises an identification mark and an infrared detection device, wherein the identification mark is coated and printed on printing paper, the infrared detection device is arranged in the printing machine, and in the using process, the infrared detection device is aligned to the identification mark and is also provided with an infrared light generator; the identification mark is composed of at least one group of color blocks with different gray scales and/or color differences, the color blocks are sequentially arranged in rows, when the infrared light generator irradiates the identification mark, the adjacent color blocks with different gray scales and/or color differences respectively emit reflected light, and the infrared detection device is used for receiving the reflected light.

Different from the prior art, the scheme of the invention mainly leads different color blocks to form different signals, and the signals are combined together to form a code, thereby distinguishing whether the paper is the paper required by the composite authentication. In the fields of general commercial small printers, household printers and the like, the prior art does not have the device and the method for identifying the paper, which are simple, easy to use and low in cost.

Furthermore, the color blocks are arranged without gaps, and the width of the color blocks is between 0.1mm and 2 mm. The infrared light generator generally adopts an infrared photoelectric tube. The infrared photoelectric tube irradiates a light spot, the size is generally 1mm to 1.5mm most suitable, the precision control can be between 0.1mm and 2mm, the use of laser can be considered when the light spot is smaller than 1mm, the smaller the light spot is, the higher the precision requirement on the identification device is, the higher the cost is, and the color block completely corresponds to the size of the light spot. Therefore, the size of the color block is larger and smaller, which has no great influence on the realization, and the cost and the use are not necessary to be considered mainly. In general, a bit larger width is used as much as possible in satisfying the coding length. However, on some smaller sheets of paper, a narrower width of the color patches may be considered, or the color patches may be arranged vertically.

The aim of gapless arrangement is to arrange more color blocks in a limited position, thereby forming a longer code and avoiding the interference of gap signals. Of course, in a sense, the gap may also be regarded as a color block, and the electrical signal of the gap may also correspond to the corresponding code.

Furthermore, the infrared detection device is connected with a signal analysis device, and the signal analysis device is simultaneously connected with a printer; the infrared detection device is a photosensitive diode or a photosensitive triode. The photosensitive diode or the photosensitive triode has the advantages of low cost, simple structure and small volume, and can be conveniently integrated into various devices.

Furthermore, the color blocks are positioned at the top end of the back surface of the printing paper and are horizontally arranged. In addition, the color blocks can also be positioned on one side of the back surface of the printing paper and are vertically arranged.

Generally, the horizontal arrangement is convenient for infrared illumination and detection, is at the top, and also easy location, paper is difficult for also yielding. The coating is coated on the back of the paper and has no influence on the printing of the paper.

The vertical arrangement can realize illumination and detection only by a group of infrared light emitting and receiving devices, does not affect the normal use of the paper, and can also take the effect of identifying the front and back of the paper into consideration.

Furthermore, the infrared detection device and the infrared generator are integrated into a photoelectric pair. The photoelectric pair is smaller and more integrated, can be placed in the printer, and realizes illumination and detection.

The technical problem to be solved by the invention is to provide a printing and data identification method of the printing identification device based on infrared codes, which comprises the following steps:

A. presetting different codes according to the radiant light intensity of each color or gray scale; the difference in color or gradation causes a change in the voltage of the detection signal, and the voltage value is used for encoding. Color and gradation are preferably used separately, but color and gradation may be used in combination.

B. B, arranging and identifying color block colors or gray scales of the marks according to the codes in the step A;

C. c, printing color blocks on the printing paper according to the colors or gray scales arranged in the step B, wherein each row is a group; typically, one line is printed.

D. When the printing paper moves to a corresponding position of the printer, the color block is irradiated by the infrared light generator, and the color block generates reflected light;

E. the infrared detection device receives the reflected light and generates corresponding electric signals for each color block;

F. the electric signal is analyzed and restored to a corresponding code, so that whether the state of the printing paper is normal or not can be judged, and the identification is completed. Generally, a control system in a printer is utilized, or a single chip microcomputer is additionally arranged in the printer to complete analysis and transmission of codes.

Further, in step F of the present invention, the electrical signals are analyzed and restored to corresponding codes, the electrical signals together form a coding unit, the first bits of the coding unit together form a coding head, and the coding head represents the beginning of a new coding unit. The encoding head is used for correcting the detected electric signal difference caused by the gray scale or color difference caused by printing ink, quality and the like and the received electric signal difference caused by the influence of ambient light, and firstly three values of 100 percent gray scale (pure black), 50 percent gray scale and 0 percent gray scale (pure white) of the head are used, namely three values of 9, 5 and 0 are used as reference, and then the other values are used as reference.

Furthermore, in step E of the present invention, the reflection intensity received by the infrared detection device generates different voltage changes, and different ones of the bit number codes are defined according to the changed voltages.

Further, in the step a of the present invention, three color blocks of 0% gray, 100% gray, and 50% gray are used, and the three values corresponding to the number 0, the number 9, and the number 5 are used as anchors, and the other numbers in 0 to 9 are obtained after averaging according to the voltage variation of the other color blocks.

Furthermore, in the step A of the invention, three color blocks of red, blue and green are used to respectively represent three values of 0 and 5 of 9, and then the three values are used as anchors, and the other numbers in 0-9 are obtained after averaging according to the voltage changes of other color blocks.

Compared with the prior art, the invention has the following advantages and effects:

1. due to the fact that the color blocks are coated on the back of the paper or other non-printing areas, the paper can be conveniently recognized, paper which does not conform to standards is avoided, support is provided for guaranteeing printing quality, using scenes which need certain background knowledge are reduced, using specialties can be reduced, user experience is improved, for example, photos need to be printed, the photos need to be loaded into the photo paper, and the printer can be automatically adjusted to be in a photo printing mode.

2. The infrared ray is reflected by the color blocks with different gray scales or different colors, so that the reflected light is used for generating an electric signal to form the code. The cost of the identification code is very low, and the identification effect can be ensured.

3. The equipment and the method are simple and easy to use, the cost and the complexity are not greatly increased, and the stability of the equipment can be kept.

4. The method has the advantages of rapid identification process, synchronization with printing and no influence on printing effect.

5. The light emitting and infrared recognition device of the present invention is compact in structure and can be conveniently integrated into various electronic devices having a volume larger than that of a matchbox.

6. The invention has long service life, low power consumption, low failure rate, stable electrical performance and strong environmental adaptability, and can be suitable for most of occasions such as families, offices, industrial production, logistics transportation and the like.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.

FIG. 2 is a bottom view of the structure of FIG. 1 according to the present invention.

Fig. 3 is a schematic view of an electrical connection structure according to the present invention.

Fig. 4 is a partial structural schematic diagram of embodiment 2 of the present invention.

Fig. 5 is a schematic view of a printing sheet according to embodiment 2 of the present invention.

Description of reference numerals: the printer comprises a printer 1, printing paper 2, an infrared light generator 3, an infrared detection device 4, a color block 5, a signal processing device 6, a printing control device 7, a photoelectric pair 8, an upper cover 9 and a lower cover 10.

Detailed Description

The present invention will be described in further detail with reference to examples, which are illustrative of the present invention and are not to be construed as being limited thereto.

Example 1:

as shown in fig. 1 to 3, the present embodiment describes a print recognition apparatus based on infrared encoding, which is composed of a printing paper 2 with a back top horizontally coated with color patches 5, an infrared light generator 3, an infrared detection device 4, a signal processing device 6, and a print control device 7.

The color blocks 5 printed on the printing paper 2 are a series of gray black color blocks with different gray levels, the color block 5 with 0% gray level is used to correspond to a number 0, the color block 5 with 100% gray level is used to correspond to a number 9, the color block 5 with 50% gray level is used to correspond to a number 5, then the three values are used as anchors, the three values are sequentially defined as the numbers in other 0-9 according to the gray levels of other color blocks, and the color blocks with the gray levels are arranged in a horizontal row without intermission.

Infrared light generator 3, infrared light generator 3 adopt photodiode in this embodiment, and infrared light generator 3 and the installation of infrared detection device 4 set up on the shell of printer 1, specifically install the below of beating printing paper 2 paper feed department, and infrared light generator 3 just in time can shine and beat printing paper 2's back, and infrared detection device 4 just in time can receive the radiant light of beating printing paper 2's back, especially scribble the reverberation of printing color lump 5 department.

The infrared light generator 3 is directly connected to the power supply of the printer 1. The infrared detection device 4 is electrically connected to the signal processing device 6, and the signal processing device 6 is disposed inside the printer 1 and electrically connected to the print control device 7. The print control device 7 controls the operation of the printer 1.

The embodiment also describes a printing and data identification method based on the infrared codes. With the above-described apparatus, printing and data recognition for the printer 1 are performed. The method comprises the following steps:

presetting different codes according to the radiant light intensity of each gray scale; specifically, the color block 5 with 0% gray level is used to correspond to the number 0, the color block 5 with 100% gray level corresponds to the number 9, the color block 5 with 50% gray level corresponds to the number 5, then the three values are used as anchors, and after the voltage variation according to the gray levels of other color blocks 5 is averaged, different color blocks 5 are sequentially defined as the numbers in other 0-9.

According to the definitions of the codes, arranging the gray scale of the color blocks 5 of the identification marks according to the codes prepared in advance;

printing color blocks 5 on the printing paper 2 according to the arrangement, wherein each row is a group; the position of the coating is the top end of the back surface of the printing paper 2, and no gap is coated in the horizontal direction to form a horizontal row.

When the printing paper 2 moves to the corresponding position of the printer 1, the color block 5 is irradiated by the infrared light generator 3, and the color block 5 generates reflected light;

the infrared detection device 4 receives the reflected light and generates corresponding electric signals for each color block 5;

the electric signal is analyzed and restored to a corresponding code, so that whether the state of the printing paper 2 is normal or not and whether the printing paper belongs to the authenticated printing paper or not can be judged, and the identification is completed. The electrical signals are analyzed and restored to the corresponding codes, the electrical signals together form a coding unit, the first bits of the coding unit together form a coding head, and the coding head represents the beginning of a new coding unit.

Example 2:

as shown in fig. 4 and 5, this embodiment describes another infrared code-based print recognition device, which has a structure substantially the same as that of embodiment 1, and of course, the printer 1 used in combination may be different, and this embodiment employs a thermal printer having an upper cover 9 and a lower cover 10. The difference is that firstly, in the embodiment, the infrared light generator and the infrared detection device are combined to form the photoelectric pair 8, and the photoelectric pair 8 is installed at one side of the interior of the printer as a component; specifically, to the lower cover 10. Second, color patches 5 are printed on the back side of the printing paper 2 and are vertically arranged in a line. The positions of the photo-pairs 8 and the color blocks 5 correspond to each other. When the printing paper 2 is running in the printer 1, the photoelectric pair 8 can detect the entire printing paper 2 in motion.

The infrared coding-based printing and data recognition method of the present embodiment is also basically the same as embodiment 1, except that the color blocks 5 are illuminated and recognized inside the printer by the photoelectric pairs 8. The color patches 5 are arranged vertically, and the positions of the color patches 5 on the printing paper 2 are matched with the positions of the photoelectric pairs 8.

In the above embodiments, it is emphasized that:

1. firstly, the color block 5 can also use a colored color block 5, the color can use three color blocks of red, blue and green, the three colors respectively represent three values of a number 0 and a number 9, the number 5, then the voltage values correspondingly generated by the three colors are used as anchors, and the other numbers in 0-9 are obtained after the voltage changes of the color blocks 5 of other colors are averaged.

Of course, the color blocks 5 with different gray levels and different colors can also be used in a mixed way, the voltage values are different, and the specific representing numbers can be defined by self.

2. In addition, the size of the color block 5 is generally 1mm to 1.5mm, which is most suitable, and the precision control may be between 0.1mm and 2mm, but less than 1mm needs to consider using laser, and the smaller the color block 5, the higher the precision requirement of the identification device is, and therefore the higher the cost is, so that the larger the size of the color block 5, the smaller the size of the color block is, the less the influence on the realization is, and the cost and the use are not necessary. In general, a bit larger width is used as much as possible in satisfying the coding length. However, on some smaller sheets of paper, a narrower width of the color patches may be considered, or the color patches may be arranged vertically.

3. The photoelectric pair 8 may be provided on one side or both sides. Similarly, the patches 5 may be disposed on one side or both sides of the printing paper.

In addition, it should be noted that the specific embodiments described in the present specification may differ in the shape of the components, the names of the components, and the like. All equivalent or simple changes of the structure, the characteristics and the principle of the invention which are described in the patent conception of the invention are included in the protection scope of the patent of the invention. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. An infrared code based print recognition device comprising: discernment sign, infrared detection device, the discernment sign is scribbled and is printed on beating printing paper, infrared detection device sets up in the printer, in the use, infrared detection device aligns the discernment sign, its characterized in that: an infrared light generator is also arranged; the identification mark is composed of at least one group of color blocks with different gray scales and/or color differences, the color blocks are sequentially arranged in rows, when the infrared light generator irradiates the identification mark, the adjacent color blocks with different gray scales and/or color differences respectively emit reflected light, and the infrared detection device is used for receiving the reflected light.

2. The infrared code based print recognition device of claim 1, wherein: the color blocks are arranged without gaps, and the width of each color block is 0.1-2 mm.

3. The infrared code based print recognition device of claim 1, wherein: the infrared detection device is connected with a signal analysis device, and the signal analysis device is simultaneously connected with a printer; the infrared detection device is a photosensitive diode or a photosensitive triode.

4. The infrared code based print recognition device of claim 1, wherein: the color blocks are positioned on one side of the back surface of the printing paper and are vertically arranged.

5. The print recognition apparatus based on infrared coding according to claim 1 or 3, characterized in that: the infrared detection device and the infrared light generator are integrated into a photoelectric pair.

6. A method for printing and data identification based on infrared coding is characterized in that: the method comprises the following steps:

A. presetting different codes according to the radiant light intensity of each color or gray scale;

C. c, printing color blocks on the printing paper according to the colors or gray scales arranged in the step B, wherein each row is a group;

F. the electric signal is analyzed and restored to a corresponding code, so that whether the state of the printing paper is normal or not can be judged, and the identification is completed.

7. The printing and data recognition method of claim 6, wherein: in step F, the electrical signals are analyzed and restored to corresponding codes, the electrical signals together form a coding unit, the first bits of the coding unit together form a coding head, and the coding head represents the beginning of a new coding unit.

8. The printing and data recognition method of claim 6, wherein: in the step E, the reflection intensity received by the infrared detection device generates different voltage changes, and different ones of the bit number codes are defined according to the changed voltages.

9. A printing and data recognition method according to claim 8, wherein: in the step A, three color blocks of 0% gray, 100% gray and 50% gray are used, corresponding to three values of 0, 9 and 5, and then the three values are used as anchors, and the other numbers in 0-9 are obtained after the voltage changes of the other color blocks are averaged.

10. A printing and data recognition method according to claim 8, wherein: in the step A, three color blocks of red, blue and green are used to respectively represent three values of 0 and 5 of 9, and then the three values are used as anchors to obtain other numbers in 0-9 after averaging according to the voltage changes of other color blocks.