JP2005041189A - Magnetic tag forming device and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a magnetic tag forming device and method, which can prevent printed documents and secret information from being carelessly disclosed or leaked in order to prevent information leak, to keep secrets and to manage documents. <P>SOLUTION: In order to form the magnetic tag having various information, a first magnetic substance with smaller coersive force and a second magnetic substance with larger coersive force are laminatingly formed together and then the second magnetic substance is magnetized under the condition that the magnitude of the portion of the second magnetic substance overlapped with the first magnetic substance is at least changed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a magnetic tag forming apparatus and method, and more particularly to a magnetic tag forming apparatus that forms predetermined information with a magnetic tag for information leakage prevention, confidentiality protection or document management, and adds the information to a sheet on which an image is formed. And methods.

  In recent years, an IC card has been widely used as a medium for recording information and replacing a magnetic card which is a readable / writable medium.

  In recent years, in particular, contactless IC cards that can exchange information without contact have been used in fields such as transportation, finance, and services.

  As this non-contact IC card is widely used, in order to increase the security of information recorded on the non-contact IC card, data is encrypted, and an element that emits an optical or electronic special signal is not used. What is built in a contact IC card has also been developed.

  For example, when a magnetic element that reverses magnetization due to the large Barkhausen effect is incorporated in a non-contact IC card and this non-contact IC card is used, an inquiry is given by applying an alternating magnetic field, and a unique characteristic generated by the magnetization reversal of the magnetic element is generated. A method of authenticating the non-contact IC card by detecting a pulse signal has also been proposed.

  In Patent Document 1, the length and arrangement of the magnetic wire are changed, and the number of detections and the detection time of the magnetization reversal pulse signal due to the large Barkhausen effect of the magnetic wire according to the length and arrangement are measured, and the measurement result is supported. A method has been proposed in which a magnetic wire having a length and an arrangement is specified and information is detected.

  Also, as shown in Patent Document 2, a method is proposed in which information is detected by detecting a difference in magnetostriction vibration frequency of a magnetic thin body according to the length using a magnetic thin body having a different length. Has been.

JP-A-11-306275 JP 2000-046508 A

  However, in order to apply the proposed method to an image forming apparatus which expresses predetermined information for information leakage prevention, confidentiality preservation or document management, and additionally prints it, magnetic materials having different lengths are used in advance. It is necessary to prepare and paste it on a medium such as a printing paper to which a magnetic material is applied, or indent it.

  In addition, in order to change the contents of the predetermined information for each printing paper, it is necessary to change the magnetic material having a different length for each printing paper or to change the arrangement of the magnetic material. It is difficult to cope with an image forming apparatus in which predetermined information is expressed and added and printed for document management.

  Therefore, the present invention provides a magnetic tag forming apparatus and method capable of preventing a printed document and confidential information from being inadvertently disclosed or leaked for preventing information leakage, maintaining confidentiality, or managing documents. The purpose is to provide.

  In order to achieve the above object, the magnetic tag forming method according to the first aspect of the present invention forms a first magnetic body having a small coercive force and a second magnetic body having a large coercive force in an overlapping manner. A magnetic tag having different information is formed by magnetizing the magnetic material and changing at least the size of the overlapping portion of the second magnetic material with respect to the first magnetic material.

  According to a second aspect of the present invention, in the first aspect of the invention, the second magnetic body is formed by an electrophotographic method or an inkjet method.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the first magnetic body is formed in advance on an object to which the magnetic tag is applied in a predetermined shape, and the pre-formed second A second magnetic body whose shape and amount are controlled is formed on one magnetic body.

  According to a fourth aspect of the present invention, in the first or second aspect of the present invention, the first magnetic body is formed on an object to which the magnetic tag is to be applied, and then the shape and amount are formed on the first magnetic body. The controlled second magnetic body is formed.

  According to a fifth aspect of the present invention, in the first or second aspect of the invention, the second magnetic body whose shape and amount are controlled is formed on the object to which the magnetic tag is attached, and then the second magnetic body is formed. The first magnetic body is formed on the substrate.

  According to a sixth aspect of the present invention, in any one of the third to fifth aspects, the object is a print sheet on which predetermined information is printed.

  According to a seventh aspect of the present invention, there is provided a magnetic tag forming apparatus in an image forming apparatus that outputs a magnetic tag attached to a sheet on which a desired image is formed, and the first shape formed on the sheet has a small coercive force. Magnetic body forming means for forming a second magnetic body having a large coercive force whose shape and amount are superposed by superimposing at least one part on the first magnetic body, and the second body formed by the magnetic body forming means Magnetizing means for magnetizing the magnetic body, and a magnetic tag having different information depending on the size of the overlapping portion of the second magnetic body with respect to the first magnetic body is formed.

  According to an eighth aspect of the present invention, in the seventh aspect of the present invention, the image forming apparatus is an electrophotographic printer, and the magnetic body forming means supplies the second magnetic body with magnetic toner using the printer. It is characterized by being formed by the electrophotographic method used.

  According to a ninth aspect of the present invention, in the seventh aspect of the present invention, the image forming apparatus is an ink jet printer, and the magnetic body forming means uses the second magnetic body with magnetic ink by the printer. The ink jet method is used.

  According to a tenth aspect of the present invention, in any one of the seventh to ninth aspects, the first magnetic body is formed in advance on a sheet to which the magnetic tag is attached.

  The invention of claim 11 further comprises a forming means for forming the first magnetic body on the paper in any of the inventions of claims 7 to 9, wherein the forming means has a desired shape on the paper. It is provided before the image forming process of the image forming apparatus for forming an image.

  The invention of claim 12 further comprises forming means for forming the first magnetic body on the paper in any of the inventions of claims 7 to 9, wherein the forming means has a desired shape on the paper. It is provided in the latter stage of the image forming process of the image forming apparatus for forming an image.

  According to the magnetic tag forming apparatus and method of the present invention, the first magnetic body having a small coercive force and the second magnetic body having a large coercive force are formed in an overlapping manner, and the second magnetic body is magnetized. Since the magnetic tag having different information is formed by changing at least the size of the overlapping portion of the second magnetic body with respect to the first magnetic body, information leakage prevention, confidentiality maintenance or document management For this reason, it is possible to easily add predetermined information for printing to each printing paper.

  In the magnetic tag forming apparatus and method according to the present invention, a magnetic tag with unique identification information is formed and added to the printing paper to prevent information leakage, confidentiality, or document management, and the identification information of the magnetic tag is added. The correspondence between the print paper and the image information of the document printed on the print paper prevents the image information such as text from being inadvertently disclosed and prevents leakage of confidential information due to inadvertent copying. It is possible to prevent.

  That is, in the present invention, the image information is a legitimate confidential document from the correspondence between the image information printed by the image information forming apparatus and the identification information of the magnetic tag added to the printing paper on which the image information is printed. In addition, if this image information is to be copied to another printing paper, the correspondence between the image information and the printing paper identification information cannot be maintained. It is possible to prevent leakage of secrets due to the like.

  FIG. 1 is a block diagram showing a configuration of a main part of an embodiment in which a magnetic tag forming apparatus and method according to the present invention are applied to a printing apparatus which is an image forming apparatus.

  As shown in FIG. 1, the printing apparatus 100 feeds paper feed trays 50 a and 50 b in which printing papers having different paper sizes are accumulated and feeds the printing paper accumulated in the paper feed trays 50 a and 50 b. Identification information magnetism for recording image information such as text and identification information unique to the printing paper 10 on the rollers 51a and 51b, loading rollers 60a and 60b for carrying the fed printing paper 10 into the printing unit 40, and printing paper 10 The printing unit 40 for printing the tag, the carry-out rollers 61a and 61b for discharging the print output paper on which the image information and the identification information magnetic tag are printed by the printing unit 40, and the identification information magnetic tag of the print output paper are magnetized. A permanent magnet 30 for recording identification information and a control unit 20 for controlling the entire printing apparatus 100 are provided.

  The printing apparatus 100 uses a special paper in which a first magnetic tag of a low coercive force magnetic material having a predetermined size and a predetermined shape, for example, a rectangular shape, is previously placed in a predetermined position of the printing paper 10. It is configured so that identification information unique to the printing paper 10 can be added.

  When printing information is input to the printing apparatus 100 via the personal computer 70 by inputting image information such as a desired document, identification information unique to the printing paper 10 to be added to the printing paper 10, a paper size, a paper type, and the like, the printing paper 10 The instructed image information and identification information are printed and output.

  For example, the control unit 20 selects one of the paper feed trays 50a and 50b based on the input paper size, and the printing paper 10 is selected by one of the paper feed rollers 51a and 51b of the selected paper feed trays 50a and 50b. Is fed to the carry-in rollers 60a and 60b.

  The fed printing paper 10 is conveyed to the printing unit 40 by the carry-in rollers 60a and 60b, and the printing unit 40 prints image information on the printing paper 10 based on the image information and the identification information input from the control unit 20. At the same time, the second magnetic tag of the high coercivity magnetic material is printed on the first magnetic tag of the low coercivity magnetic material formed in advance at a predetermined position of the printing paper 10 according to the identification information.

  The paper type is information that allows the printing unit 40 to specify a predetermined position where the first magnetic tag corresponding to the paper size of the printing paper 10 is formed based on the input paper type.

  The printing paper 10 on which the image information and the second magnetic tag are printed is discharged by the carry-out rollers 61a and 61b, and the first magnetic tag and the second magnetic tag on the printing paper 10 are magnetized by the magnetic field of the permanent magnet 30. Is done.

  Here, the amount of the high coercivity magnetic material is controlled according to the input identification information, and the state in which the controlled amount of the high coercivity magnetic material (second magnetic tag) is printed on the first magnetic tag is identified information. This is called a magnetic tag.

  When this identification information magnetic tag is magnetized by the permanent magnet 30 or the like, the first magnetic tag of the low coercive force magnetic material is magnetized to a low coercive force, and the second magnetic tag of the high coercive force magnetic material is magnetized to a high coercive force.

  Since the magnetized first magnetic tag and the second magnetic tag have different coercive forces, when a magnetic field is applied from the outside to the magnetized first magnetic tag and the second magnetic tag, the first magnetic tag and the second magnetic tag And show different characteristics.

  For example, when an alternating magnetic field having a predetermined frequency is applied to the first magnetic tag and the second magnetic tag and a received signal due to magnetostriction vibration or magnetization reversal of the first magnetic tag and the second magnetic tag is detected, a high coercive force is obtained. The two-magnetic tag appears with a reduced response such as magnetostrictive vibration compared to the first magnetic tag having a low coercive force.

  Therefore, the second magnetic tag of the high coercivity magnetic material whose amount is controlled according to the identification information is printed on the first magnetic tag of the low coercivity magnetic material formed in advance at a predetermined position of the printing paper 10. By forming the identification information magnetic tag, the magnetized identification information magnetic tag is formed as a combination pattern of the amount of the high coercive force portion and the low coercive force portion corresponding to the identification information.

  By associating the identification information added to the printing paper 10 with the image information and storing and managing them in a management table (not shown) of the personal computer 70, it is possible to associate image information such as a document with identification information unique to the printing paper 10. From this correspondence, it is possible to prevent inadvertent document disclosure of image information such as a document and to prevent leakage of confidential information due to inadvertent copying or the like.

  By the way, in the printing apparatus 100 of this embodiment, in order to add identification information unique to the printing paper, a dedicated paper in which a first magnetic tag of a low coercive force magnetic material is formed in advance at a predetermined position on the printing paper is used. In order to add unique identification information to the printing paper, a high coercivity magnetic material whose amount is controlled according to the identification information is printed on a part or all of the first magnetic tag. An identification information magnetic tag is formed, and the formed identification information magnetic tag is magnetized by a permanent magnet so that identification information can be given.

  FIG. 2 is a diagram showing an example in which an identification information magnetic tag corresponding to identification information is formed by an electrophotographic method or an ink jet method using a dedicated paper to which a first magnetic tag (low coercive force magnetic material) is applied in advance. is there.

  FIG. 2A is a diagram showing an example in which the second magnetic tag is formed on a part of the first magnetic tag, and FIG. 2B shows the second magnetic tag in several places on the first magnetic tag. It is a figure which shows an example formed in one part.

  As shown in FIG. 2A, the special paper 200 has a first magnetic tag 201 made of a low coercivity magnetic material formed in a rectangular shape with a predetermined length at a predetermined position of the special paper 200 in advance. According to the input identification information, the second magnetic tag 202 made of a high coercive magnetic material is printed on a part of the first magnetic tag 201 to form the identification information magnetic tag 203 (the part surrounded by a broken line), Identification information is given by being magnetized by a permanent magnet or the like.

  Further, as shown in FIG. 2B, the special paper 210 has a first magnetic tag 201 made of a low coercivity magnetic material formed in a rectangular shape with a predetermined length at a predetermined position of the special paper 210 in advance. The second magnetic tags 211, 212, and 213 are printed on some of the portions on the first magnetic tag 201 according to the input identification information, and the identification information magnetic tag 214 (the portion surrounded by the broken line) And identification information is given by being magnetized by a permanent magnet or the like.

  The first magnetic tag 201, which is a low coercive magnetic material, is a magnetic material having a coercive force of 1 Oersted or less, such as an FeCo alloy or the like, and has a high coercive force magnet that forms the second magnetic tags 202, 211, 212 and 213. The material is, for example, a magnetic material of 10 Oersted or more such as FeO.

  When the identification information magnetic tags 203 and 214 to which identification information is given in this way are placed in a predetermined alternating magnetic field, the second magnetic tags 202, 211, 212, which are highly magnetized of the identification information magnetic tags 203 and 214, The identification information magnetic tags 203 generated at the time of frequency reversal of the alternating magnetic field due to the magnetostriction vibration of the identification information magnetic tags 203 and 214, the resonance frequency, and the magnetization reversal, depending on the amount of the portion 213 and the portion of the first magnetic tag 201 that is low magnetized A change appears in the intrinsic pulse signals 214 and 214.

  Therefore, in the printing apparatus 100 to which the magnetic tag forming apparatus according to the present invention is applied, the image information is printed on the printing paper, and the second magnetic printing is performed on the first magnetic tag of the printing paper according to the input identification information. It is configured to be able to add identification information unique to printing paper by controlling the amount of tags.

  FIG. 3 is a block diagram illustrating a configuration of a main part of the printing unit 40 of the printing apparatus 100 illustrated in FIG. 1.

  As shown in FIG. 3, the main part of the printing unit 40 includes an image processing unit 41 and an image forming unit 42, and the image processing unit 41 is input from the personal computer 70 via the control unit 20. A color space conversion unit 411 that performs gamma correction on the obtained image information (for example, red (R), green (G), and blue (B) sRGB image signals) and converts the image information into an independent color space independent of the device, and the printing apparatus 100. A color correction unit 413 and a gradation correction unit for generating four original color material gradation data of yellow (Y), magenta (M), cyan (C), and black (K) (each 8 bits) for representing colors 414 and a high coercivity magnetic material for setting the amount and print pattern of the high coercivity magnetic material of the second magnetic tag to be printed on the first magnetic tag of the low coercivity magnetic material of the printing paper according to the identification information input by the user The amount conversion unit 412 and the image forming unit 42 Create an image forming data for driving the optical device 420Y～420B, and a rendering unit 415 outputs the image formation data to the image forming section 42.

  The image forming unit 42 includes exposure devices 420Y to 420B that perform exposure control on the photoconductors 424Y to 424B with the laser beam LB in accordance with the image formation data transmitted after image processing by the image processing unit 41, and the photoconductor 424Y. The toner images T ′ corresponding to the amount of the high coercive magnetic material and the printing pattern of the developing devices 423Y to 423K and the second magnetic tag that develop the latent image formed on the surface of ˜424B with toner to form the toner image T On the intermediate transfer member 429 and the intermediate transfer member 429, which are disposed below the photosensitive members 424Y to 424B and transfer the toner image T and the toner image T ′ formed on the photosensitive members 424Y to 424B. A fixing device 430 for fixing the toner image T and the toner image T ′ to the printing paper 200 is disposed.

  The exposure devices 420Y to 420B emit laser light LB from a semiconductor laser (not shown) according to the image formation data input from the image processing unit 41 to scan and expose the photoconductors 424Y to 424B.

  The photoreceptors 424Y to 424B are rotationally driven at a predetermined speed in the direction of the arrow by a driving unit (not shown), and an electrostatic latent image is formed by scanning and exposing the laser beam LB in accordance with image formation data. .

  In the developing devices 423Y to 423K, yellow (Y), magenta (M), cyan (C), and black (K) developers are introduced in the case of a full-color machine, and a high coercive force magnetic material is installed in the developing device 423B. A toner (B) developer containing is introduced.

  On the surface of the intermediate transfer member 429, four colors of yellow (Y), magenta (M), cyan (C), and black (K) are formed on the photosensitive members 424Y to 424K according to the color of the image to be formed. All or a part of the toner image T and a toner image T ′ having an amount and printing pattern corresponding to the identification information are transferred onto the surface of the intermediate transfer member 429 by the primary transfer rolls 425Y to 425B.

  The toner image T and the toner image T ′ transferred onto the intermediate transfer member 429 are transferred onto the printing paper 200 by the secondary transfer roll 427, conveyed to the fixing device 430, and the heating roll 431 and pressure of the fixing device 430. It is pressurized and heated by the roll 432 and fixed on the printing paper 200.

  The intermediate transfer body 429 includes a drive roll 428 and a driven roll 426. The driven roll 426 is disposed as a roll facing the secondary transfer roll 427, and the intermediate transfer body 429 includes the photoreceptors 424Y to 424B. It is supported so as to be rotatable along the direction of arrow 440 at the same moving speed as the peripheral speed.

  The toner images T and T ′ transferred onto the intermediate transfer body 429 are transferred onto the printing paper 200 at a predetermined timing.

  The transferred toner image T is transferred to an area for printing image information on the printing paper 200, and the toner image T ′ is transferred onto a first magnetic tag (low coercive force magnetic material) at a predetermined position on the printing paper 200. The

  The printing paper 200 on which the image information and the second magnetic tag (high coercive force magnetic material) are fixed is conveyed so as to pass almost directly under the permanent magnet 30, and at that time, the permanent magnet 30 causes the first magnetic tag and the second magnetic tag to be passed through. Each magnetic tag is magnetized, added with identification information, and discharged.

  By the way, in the printing apparatus 100, the amount and print pattern of the high coercivity magnetic material of the second magnetic tag are set according to the input identification information, and the set amount and print pattern of the high coercivity magnetic material are set in advance on the printing paper. The identification information magnetic tag is formed by printing on a first magnetic tag (low coercive force magnetic material) formed at a predetermined position, and the identification information is given by being magnetized.

  A method of forming the identification information magnetic tag according to the input identification information and providing the identification information can be realized by the following method, for example.

  The high coercivity magnetic material amount conversion unit 412 of the image processing unit 41 refers to the conversion table A according to the input identification information, and the high coercivity magnetic material of the second magnetic tag corresponding to the identification information based on the conversion table A Set volume and print pattern.

  The reference table A is stored in a storage unit (not shown) of the high coercivity magnetic material amount conversion unit 412 with a configuration as shown in FIG. 4, for example, and is read and referenced as necessary.

  As shown in FIG. 4, the conversion table A includes a high coercivity magnetic material amount and print pattern corresponding to each value in the identification information column 410 in the left column and the identification information column 410 in the left column. It consists of a magnetic magnetic material printing pattern column 420, and the identification information column 410 stores numerical values indicating security levels of "0" to "9" values.

  For example, a security level value corresponding to the confidentiality of image information such as a document to be printed is printed as identification information, with the security level having the highest confidentiality being a “9” value and the security level having the lowest confidentiality being a “0” value. Add to paper.

  When the input identification information is “0”, the “0” value in the identification information column 410 of the conversion table A is referred to, and the high coercivity magnetic material printing pattern corresponding to the “0” value in the referenced identification information column 410 The print pattern 421 in the column 420 is specified.

  The specified print pattern 421 shows an example in which the second magnetic tag of the high coercivity magnetic material is not printed on the first magnetic tag of the low coercivity magnetic material formed at a predetermined position of the printing paper. The rectangle indicates a rectangular shape figure of the first magnetic tag (low coercive force magnetic material) formed at a predetermined position on the printing paper.

  When the input identification information is “3”, the “3” value in the identification information column 410 of the conversion table A is referred to, and the high coercive force magnetic material corresponding to the “3” value in the referenced identification information column 410 is referred to. The print pattern 422 in the print pattern column 420 is specified.

  The specified print pattern 422 is printed on the first magnetic tag (low coercive force magnetic material) formed at a predetermined position on the printing paper by about half of the second magnetic tag (high coercive force magnetic material). An example is shown.

  The high coercive force magnetic material amount conversion unit 412 specifies a predetermined position of the first magnetic tag (low coercive force magnetic material) of the printing paper based on the input paper type information, and the first magnetic tag (low coercive force magnetic material). ) Of the rectangular shape graphic information of the first magnetic tag (low coercive force magnetic material) for the second magnetic tag, for example, when the print pattern 422 of the security level “3” is specified. The graphic information of the amount of printing (the high coercive force magnetic material) (the black rectangular portion of the print pattern 422) is generated.

  By inputting the graphic information of the generated print pattern 422 to the drawing unit 415, the amount of the second magnetic tag (high coercive magnetic material) and the print pattern corresponding to the input identification information are formed in a predetermined position on the printing paper in advance. The identification information magnetic tag is formed by printing on the first magnetic tag (low coercive force magnetic material).

  The identification information magnetic tag printed by the printing unit 40 is magnetized by the permanent magnet 30, and the inputted identification information is given on the printing paper.

  FIG. 5 shows that the identification information magnetic tag is formed by printing an amount of the second magnetic tag (high coercivity magnetic material) according to the identification information on the first magnetic tag (low coercivity magnetic material) of the printing paper 200, FIG. 6 is a diagram illustrating a process of giving identification information to the printing paper 200.

  A process of forming the identification information magnetic tag 203 corresponding to the input identification information and giving the identification information will be briefly described with reference to FIG.

  As shown in FIG. 5A, when the printing paper 200 is conveyed to the printing unit 40 by the carry-in rollers 60a and 60b, the printing unit 40 receives the second magnetic tag (high coercive force) corresponding to the input image information and identification information. The toner image T (image information) and T ′ (second magnetic tag) of the amount of the magnetic material 202 and the printing pattern are transferred to the printing paper 200 via the intermediate transfer body 429.

  As shown in FIG. 5B, the toner images T and T ′ transferred to the printing paper 200 are fixed to the image information area (not shown) of the printing paper 200 by the fixing device 430, and the second magnetic The toner image T ′ of the tag (high coercive force magnetic material) 202 is fixed on the first magnetic tag (low coercive force magnetic material) 201 of the printing paper 200 to form the identification information magnetic tag 203, and is discharged by the carry-out rollers 61 a and 61 b. As the paper is discharged, the identification information magnetic tag 203 is magnetized by the permanent magnet 30 as shown in FIG.

As described above, the amount and print pattern of the second magnetic tag (high coercivity magnetic material) formed on the first magnetic tag (low coercivity magnetic material) of the printing paper 200 are controlled and magnetized according to the identification information. Thus, identification information corresponding to the combination of the quantity of the highly magnetized portion (second magnetic tag) and the low magnetized portion (first magnetic tag) can be given.
When the printing paper to which the identification information is given is placed in a predetermined alternating magnetic field, for example, the second magnetic tag magnetized to the high coercivity of the identification information magnetic tag and the first magnetized to the low coercivity. It is possible to detect the frequency characteristic of the alternating magnetic field corresponding to the amount of the magnetic tag, the resonance frequency, and the pulse signal characteristic at the time of magnetization reversal.

  For example, the identification information magnetic tag magnetized according to the identification information is placed in a predetermined alternating magnetic field, and the frequency characteristics of the alternating magnetic field due to the magnetostrictive vibration of the identification information magnetic tag, the resonance frequency, and the intrinsic pulse signal at the time of magnetization reversal, respectively. When detection is performed using a detectable detection device, for example, detection signals having various characteristics as shown in FIGS. 6, 7, and 8 can be detected.

  FIG. 6 is a diagram showing an example of frequency characteristics of an alternating magnetic field corresponding to the amount of the second magnetic tag magnetized to a high coercive force of the identification information magnetic tag and the first magnetic tag magnetized to a low coercive force. FIG. 8 is a diagram illustrating an example of a resonance frequency of the identification information magnetic tag, and FIG. 8 is a diagram illustrating an example of a unique pulse signal when the magnetization of the identification information magnetic tag is reversed.

  In FIG. 6, for example, as shown in FIG. 6A, the second magnetic tag (high coercivity magnetic material) is not formed on the first magnetic tag (low coercivity magnetic material) 601 using the detection device. When the information magnetic tag 602 is formed, a predetermined alternating magnetic field is applied to the magnetized printing paper 600, and the received signal of the applied alternating magnetic field is detected, the alternating magnetic field is received by the magnetostrictive vibration of the identification information magnetic tag 602. A plurality of pulse signals are detected such that the signal has a frequency characteristic 630, for example.

  As shown in FIG. 6B and FIG. 6C, the identification information magnetic tags 612 and 622 are formed using the detection device in the same manner as described above, and a predetermined alternating magnetic field is applied to each of the magnetized printing paper 610 and 620, respectively. When the received signal of the applied alternating magnetic field is detected, the received signal of the alternating magnetic field by the magnetostrictive vibration of the identification information magnetic tags 612 and 622 is, for example, the case of the identification information magnetic tag 612 in FIG. As shown in FIG. 6, a plurality of pulse signals having a frequency characteristic 640 are detected, and in the case of the identification information magnetic tag 622, a pulse signal having a frequency characteristic 650 is detected as shown in FIG.

  In FIG. 7, as shown in FIG. 7A, identification information in which the second magnetic tag (high coercivity magnetic material) is not formed on the first magnetic tag (low coercivity magnetic material) 701 using the detection device. When the magnetic tag 702 is formed, a predetermined alternating magnetic field is applied to the magnetized printing paper 700, and the resonance frequency at which the identification information magnetic tag 702 vibrates magnetostrictively is detected, for example, identification information as indicated by a pulse signal 730 is obtained. The natural resonance frequency of the magnetic tag 702 is detected.

In the same manner as described above, the identification information magnetic tags 712 and 722 are formed as shown in FIGS. 7B and 7C using the detection device, and a predetermined alternating magnetic field is applied to each of the magnetized printing sheets 710 and 720. When the identification information magnetic tags 712 and 722 detect the resonance frequency at which the magnetostrictive vibration is detected, in the case of the identification information magnetic tag 712, for example, the natural resonance frequency of the identification information magnetic tag 712 as shown in the pulse signal 740 is detected. In the case of the identification information magnetic tag 722, for example, the natural resonance frequency of the identification information magnetic tag 722 as indicated by the pulse signal 750 is detected.
In FIG. 8, as shown in FIG. 8A, identification information in which the second magnetic tag (high coercivity magnetic material) is not formed on the first magnetic tag (low coercivity magnetic material) 801 using the detection device. When the magnetic tag 802 is formed, a predetermined alternating magnetic field is applied to the magnetized printing paper 800, and a pulse signal when the magnetization of the identification information magnetic tag 802 is reversed, for example, the magnetic field strength H3 at time t3 is detected. A pulse signal 830 unique to the identification information magnetic tag 802 that sometimes reverses magnetization is detected.

  A predetermined alternating magnetic field is applied to each of the print sheets 810 and 820 on which the identification information magnetic tags 812 and 822 as shown in FIG. 8B and FIG. When the pulse signal when the identification information magnetic tags 812 and 822 are reversed in magnetization is detected, for example, a pulse signal 840 unique to the identification information magnetic tag 812 that is reversed when the magnetic field intensity H2 at time t2 is detected. For example, a pulse signal 850 unique to the identification information magnetic tag 822 that causes magnetization reversal at the magnetic field intensity H1 at time t1 is detected.

  In this way, the amount of the second magnetic tag (high coercivity magnetic material) is controlled according to the identification information, printed on the first magnetic tag (low coercivity magnetic material) to form the identification information magnetic tag, and magnetized The identification information can be read by applying a predetermined alternating magnetic field to the identification information magnetic tag and detecting the frequency characteristic of the alternating magnetic field due to magnetostrictive vibration of the identification information magnetic tag, the resonance frequency, and the pulse signal characteristic at the time of magnetization reversal. .

  FIG. 9 is a flowchart showing a magnetic tag forming method in the printing apparatus 100 to which the magnetic tag forming apparatus and method according to the present invention shown in FIG. 1 is applied.

  The magnetic tag forming method according to the present invention will be described with reference to FIG.

  First, the user can identify image information such as a document to be printed on the printing apparatus 100 via the personal computer 70 connected to the printing apparatus 100, and unique identification information and paper that can identify the printing paper 10 on which the image information is printed. The size and paper type are input and printing is instructed (step 900).

  As the identification information, for example, a security level value of the image information to be printed, a user identification number, a password, or the like is input.

  The input image information, identification information, paper size, paper type, and other signals are input to the control unit 20 of the printing apparatus 100. First, based on the input paper size, the control unit 20 causes the paper feed tray 50a, 50b is selected, and the printing paper 10 is fed to the carry-in rollers 60a and 60b by any of the paper feed rollers 51a and 51b of the selected paper feed trays 50a and 50b (step 901).

  The fed printing paper 10 is conveyed to the printing unit 40 by carry-in rollers 60a and 60b.

  The printing unit 40 sets the amount and print pattern of the second magnetic tag to be printed on the first magnetic tag of the printing paper 10 based on the input identification information (step 902), and based on the input paper type. Graphic information of the set second magnetic tag is generated (step 903).

  The generated graphic information of the second magnetic tag and the input image information are printed on the printing paper 10 and discharged from the printing unit 40 (step 904).

  The printing paper 10 on which the second magnetic tag corresponding to the identification information is printed on the first magnetic tag by the printing unit 40 is discharged by the carry-out rollers 61a and 61b, and the second magnetic tag and the first magnetic tag are discharged by the permanent magnet 30. And identification information is given (step 905).

  The identification information given to the printing paper 10 and the image information are associated and stored in a management table (not shown) of the personal computer 70 (step 906).

  FIG. 10 is a block diagram showing the configuration of the main part of another embodiment in which the magnetic tag forming apparatus and method according to the present invention are applied to a printing apparatus which is an image forming apparatus.

  In this embodiment, in the printing apparatus 110 to which the magnetic tag forming apparatus and method according to the present invention are applied, the first magnetic tag forming apparatus for forming the first magnetic tag of the low coercive force magnetic material is disposed in the printing apparatus 110. Then, the first magnetic tag forming device forms the first magnetic tag of the low coercive force magnetic material on the plain paper, and the special paper on which the first magnetic tag (low coercive force magnetic material) is formed and applied in advance is used. Even if it is not used, the identification information magnetic tag of the identification information unique to the printing paper on which the image information is printed can be formed.

  As shown in FIG. 10, the printing apparatus 110 feeds paper sheets 50a and 50b in which printing sheets having different paper sizes are accumulated, and feeds the printing sheets accumulated in the sheet feeding trays 50a and 50b. The rollers 51a and 51b, the carry-in rollers 60a and 60b for carrying the fed print paper 10 into the printing unit 40, and the print rollers 10 placed between the carry-in rollers 60a and 60b and the print unit 40. A first magnetic tag forming device 80 for forming a first magnetic tag of a low coercive force magnetic material at a predetermined position, and an identification information magnetic tag for recording image information such as text and identification information unique to the printing paper 10 on the printing paper 10 A printing unit 40 that prints image information, discharge rollers 61a and 61b that discharge printed output paper on which image information and an identification information magnetic tag are printed by the printing unit 40, and identification information magnetism of the printed output paper. A permanent magnet 30 for recording identification information by magnetizing a grayed, and a control unit 21 for controlling the entire printing apparatus 100.

  The first magnetic tag made of the low coercive force magnetic material formed on the printing paper 11 by the first magnetic tag forming device 80 is formed in a predetermined size, for example, a rectangular shape.

  When printing information is input to the printing apparatus 110 via the personal computer 70 by inputting image information such as a desired document, identification information unique to the printing paper 10 to be added to the printing paper 10, a paper size, and the like, the image designated on the printing paper 10 is displayed. Information and identification information are printed and output.

  For example, the control unit 21 selects one of the paper feed trays 50a and 50b based on the input paper size, and the printing paper 11 is fed by one of the paper feed rollers 51a and 51b of the selected paper feed trays 50a and 50b. Is fed to the carry-in rollers 60a and 60b.

  The fed printing paper 11 is transported to the printing unit 40 by the carry-in rollers 60a and 60b, and the first magnetic tag forming device 80 places the first magnetic material of the low coercivity magnetic material at a predetermined position on the printing paper 11. A tag is formed.

  The printing paper 11 on which the first magnetic tag is formed is conveyed to the printing unit 40, and the printing unit 40 prints image information on the printing paper 11 based on the image information and identification information input from the control unit 20. The identification information magnetic tag is formed by printing the second magnetic tag of the high coercivity magnetic material in an amount corresponding to the identification information on the first magnetic tag of the low coercivity magnetic material formed at a predetermined position on the printing paper 11. .

  The printing paper 11 on which the image information and the identification information magnetic tag are printed is magnetized by the permanent magnet 30 so that the identification information magnetic tag is magnetized and given identification information. The identification information given to the printing paper 11 is associated with the image information and the personal computer. 70 is configured to store and manage in a management table (not shown).

  With such a configuration, the identification information added to the printing paper 11 and the image information are associated with each other and stored in a management table (not shown) of the personal computer 70, so that the image information such as a document and the printing paper 11 are unique. Thus, it is possible to prevent inadvertent document disclosure of image information such as a document and to prevent leakage of confidential information due to inadvertent copying or the like.

  FIG. 11 and FIG. 12 are block diagrams showing the configuration of the main part of the first magnetic tag forming device 80.

  FIG. 11 is a plan view showing the configuration of the main part of the first magnetic tag forming device 80, and FIG. 12 is a side view schematically showing the structure of the transport mechanism shown in FIG.

  As shown in FIGS. 11 and 12, the first magnetic tag forming device 80 includes a transport mechanism unit 820 that transports the printing paper 11, drive control of the transport mechanism unit 820, and a first magnetic tag that is a low coercivity magnetic material. A control circuit unit 810 that performs control and the like to form at a predetermined position on the printing paper 11 is provided.

  In FIG. 11 and FIG. 12, a pair of paper feed rollers 825 are provided at positions opposite to the carry-in rollers 60a and 60b, take the loaded print paper 11 into the transport mechanism 820, and pair the taken print paper 11 with each other. The sheet carry-out roller 826 is carried out of the first magnetic tag forming apparatus 80 and conveyed to the printing unit 40.

  A guide roller 827 is installed at a position where the heating resistor 822 faces between the rollers 825 and 826, and the printing paper 11 conveyed from the carry-in rollers 60 a and 60 b receives the pair of paper feed rollers 825 and heat generation. Between the resistor 822 and the guide roller 827, the paper passes through the pair of paper carry-out rollers 826 and is carried out from the carrying mechanism unit 820 and conveyed to the printing unit 40.

  In FIG. 11, the guide roller 827 is omitted, and a pair of paper feed rollers 825 to a paper carry-out roller 826 is shown as a single print paper 11 so that the conveyance path of the print paper 11 can be easily understood. The relationship between the sizes of the transport mechanism 820 and the transport mechanism 820 is not limited to this figure.

  The transport mechanism 820 is attached to the end of the thermal transfer sheet 821 and a sheet feeding roller 823 around which a thermal transfer sheet 821 including a low coercive magnetic material having a coercive force of 1 Oersted or less, such as an FeCo alloy, is sufficiently wound. A sheet take-up roller 824 is provided.

  The thermal transfer sheet 821 is sent out from the sheet feed roller 823 under drive control by the control circuit unit 810 and is taken up by the sheet take-up roller 824.

  Meanwhile, the thermal transfer sheet 821 is configured to pass between the heating resistor 822 and the guide roller 827 together with the printing paper 11 based on the control by the control circuit unit 810.

  The sheet feeding roller 823 and the sheet take-up roller 824 are each fixed on a shaft, and are attached so as to be slidable inside the transport mechanism 820 in the axial direction.

  Further, the heating resistor 822 is slidably mounted inside the transport mechanism 820 in the axial direction of the rollers 823 and 824, and the sheet feeding roller 823, the heating resistor 822, and the sheet take-up roller 824 are interlocked. Thus, the low coercive force magnetic material included in the thermal transfer sheet 821 is thermally transferred to a predetermined position on the printing paper 11.

  The control circuit unit 810 of the first magnetic tag forming device 80 includes a transport control unit 812 and a first magnetic tag forming unit 813.

  The conveyance control unit 812 conveys the printing paper 11 conveyed from the carry-in rollers 60 a and 60 b by performing drive control of the conveyance mechanism unit 820.

  The first magnetic tag forming unit 813 controls the operations of the sheet feeding roller 823 and the sheet winding roller 824 in cooperation with the conveyance control unit 812 at the transfer position of the low coercive force magnetic material with reference to the image information.

  Then, while controlling the conveyance of the thermal transfer sheet 821, the heating resistor 822 is heated to melt a part of the thermal transfer sheet 821 and thermally transfer the first magnetic tag of the low coercive force magnetic material onto the printing paper 11.

  In this way, the first magnetic tag of the low coercive force magnetic material is formed at a predetermined position on the printing paper 11.

  FIG. 13 is a diagram illustrating the configuration of the thermal transfer sheet 821 wound around the sheet feed roller 823.

  FIG. 13A is a diagram showing a basic configuration of the thermal transfer sheet 821, and FIG. 13B is an enlarged view showing the configuration of the thermal transfer sheet 821.

  As shown in FIGS. 13A and 13B, the thermal transfer sheet 821 includes a sheet substrate 840, a heat melting layer 841 made of a heat melting material, and a low coercivity magnetic material 830 that forms a first magnetic tag. And three layers of an adhesive layer 842 made of an adhesive material.

  The hot melt layer 841 and the adhesive layer 842 are divided at a predetermined interval in a direction orthogonal to the paper transport direction.

  Since the heat transfer sheet 821 is transferred to the printing paper 11 by the heating resistor 822, it is desirable to divide the heat transfer sheet 821 in advance according to the width of the heating resistor 822.

  In this embodiment, the first magnetic tags of the low coercive force magnetic material 830 shown in FIG. 13 all face the same direction and have the same length.

  Further, an acetoate film can be used as the sheet substrate 840, and an acrylic resin adhesive can be used as the adhesive.

  A basic process for thermally transferring the low coercive force magnetic material 830 of the thermal transfer sheet 821 to the printing paper 11 will be briefly described.

  FIG. 14 is a diagram illustrating a basic process for thermally transferring the low coercive force magnetic material 830 of the thermal transfer sheet 821 to the paper 11 and will be described with reference to FIG.

  In the transport mechanism 820 of the first magnetic tag forming device 80, when the printing paper 11 is transported from the paper feed roller 825 to the position of the heating resistor 822, the first magnetic tag forming part 813 has a low coercive force on the printing paper 11. The operation of the sheet feeding roller 823 and the sheet winding roller 824 is controlled in cooperation with the conveyance control unit 812 to a predetermined position where the first magnetic tag of the magnetic material 830 is formed.

  When the heating resistor 822 generates heat at a predetermined position on the printing paper 11 where the first magnetic tag of the low coercivity magnetic material 830 is formed, the heat melting at the position of the heating resistor 822 as shown in FIG. The layer 841 is melted, and the adhesive layer 842 at a position corresponding to the melted hot-melt layer 841 is peeled off and adheres onto the paper 11 being conveyed in parallel.

  Note that when the heating resistor 822 generates heat, the conveyance speeds of the thermal transfer sheet 821 and the printing paper 11 are controlled to the same speed.

  Thus, the first magnetic tag of the low coercive force magnetic material 830 is formed at a predetermined position on the printing paper 11 as shown in FIG.

  The printing paper 11 in which the first magnetic tag of the low coercive force magnetic material 830 is thus formed at a predetermined position of the printing paper 11 is conveyed to the printing unit 40, and the input image information and identification information are input to the printing unit 40. The second magnetic tag of the high coercivity magnetic material corresponding to the amount is printed on the first magnetic tag of the low coercivity magnetic material 830 to form the identification information magnetic tag, which is discharged by the carry-out rollers 61a and 61b. The second magnetic tag (high coercive force magnetic material) and the first magnetic tag (low coercive force magnetic material) of the identification information magnetic tag are magnetized by the permanent magnet 30 to give identification information.

  The method of forming the second magnetic tag (high coercive force magnetic material) whose amount is controlled according to the input identification information on the first magnetic tag of the low coercive force magnetic material 830 is the same as the case shown in the first embodiment. Therefore, detailed explanation is omitted.

  Here, a magnetic tag forming method in the printing apparatus 110 to which the magnetic tag forming apparatus and method according to the present invention are applied will be described.

  FIG. 15 is a flowchart showing a magnetic tag forming method in the printing apparatus 110. The magnetic tag forming method in the printing apparatus 110 will be described with reference to FIG.

  First, the user identifies image information such as a document to be printed on the printing apparatus 110 via the personal computer 70 connected to the printing apparatus 110, and unique identification information and a sheet that can identify the printing paper 10 on which the image information is printed. A size is input and printing is instructed (step 1500).

  As the identification information, for example, a security level value of the image information to be printed, a user identification number, a password, or the like is input.

  Each signal such as the input image information, identification information, and paper size is input to the control unit 21 of the printing apparatus 110. First, the control unit 21 determines which of the paper feed trays 50a and 50b based on the input paper size. The printing paper 11 is fed to the carry-in rollers 60a and 60b by the paper feed rollers 51a and 51b of the selected paper feed trays 50a and 50b, and is fed to the first magnetic tag forming device (step). 1501).

  The first magnetic tag forming device forms a first magnetic tag having a predetermined size and shape by thermally transferring a thermal transfer sheet of a low coercivity magnetic material to a predetermined position on the fed printing paper 11 (step 1502). .

  The printing paper 11 on which the first magnetic tag is formed is conveyed to the printing unit 40 (step 1503), and the printing unit 40 performs printing on the first magnetic tag of the printing paper 11 based on the input identification information. The amount and print pattern of the magnetic tag are set (step 1504), and the graphic information of the second magnetic tag set based on the formation position, size and shape information of the formed first magnetic tag is generated (step 1505). .

  The generated graphic information of the second magnetic tag and the input image information are printed on the printing paper 11 and discharged from the printing unit 40 (step 1506).

  An amount of the second magnetic tag corresponding to the identification information is printed on the first magnetic tag by the printing unit 40 to form the identification information magnetic tag, and the printing paper 11 on which the image information and the identification information magnetic tag are printed is taken out. The paper is discharged by the rollers 61a and 61b, and the identification information magnetic tag is magnetized by the permanent magnet 30 to give identification information (step 1507).

  The identification information given to the printing paper 11 and the image information are associated with each other and stored in a management table (not shown) of the personal computer 70 (step 1508).

  FIG. 16 is a block diagram showing the configuration of the main part of still another embodiment in which the magnetic tag forming apparatus and method according to the present invention are applied to a printing apparatus which is an image forming apparatus.

  In this embodiment, in a printing apparatus 120 to which the magnetic tag forming apparatus and method according to the present invention are applied, a first magnetic tag forming apparatus for forming a first magnetic tag of a low coercive force magnetic material is disposed in the printing apparatus 110. After the image information and the second magnetic tag of the high coercivity magnetic material are printed on the printing paper in the printing unit, the low coercivity magnetism having a predetermined length and shape on the printed second magnetic tag of the high coercivity magnetic material. The identification information unique to the printing paper on which the image information is printed can be formed without forming the first magnetic tag of the material and using the dedicated paper to which the first magnetic tag (low coercive force magnetic material) is previously formed and applied. It is configured.

  As shown in FIG. 16, the printing apparatus 120 is configured to feed paper trays 50a and 50b in which printing papers having different paper sizes are accumulated, and to feed the printing paper accumulated in the paper feeding trays 50a and 50b. Printing is performed by the rollers 51 a and 51 b, the printing unit 40 that prints the second magnetic tag of the high coercive force magnetic material for recording image information such as text and identification information unique to the printing paper 10 on the printing paper 10, and printing by the printing unit 40. A first magnetic tag forming device 80 for forming a first magnetic tag of a low coercivity magnetic material having a predetermined size and shape on the second magnetic tag, and identification information on the printed output paper by magnetizing and identifying the magnetic tag A permanent magnet 30 for recording information and a control unit 21 for controlling the entire printing apparatus 100 are provided.

  When printing information is input to the printing apparatus 120 via the personal computer 70 by inputting image information such as a desired document, identification information unique to the printing paper 12 to be added to the printing paper 12, a paper size, and the like, the image designated on the printing paper 12 is displayed. Information and identification information are printed and output.

  For example, the control unit 22 selects one of the paper feed trays 50a and 50b based on the input paper size, and the printing paper 11 is fed by one of the paper feed rollers 51a and 51b of the selected paper feed trays 50a and 50b. Is fed to the carry-in rollers 60a and 60b.

  The fed printing paper 12 is conveyed to the printing unit 40 by the carry-in rollers 60a and 60b, and the printing unit 40 prints image information on the printing paper 12 based on the image information and the identification information input from the control unit 22. At the same time, the second magnetic tag of the high coercive force magnetic material whose amount is controlled according to the input identification information is printed at a predetermined position on the printing paper 12.

  The printing paper 12 on which the image information and the second magnetic tag are printed is conveyed to the first magnetic tag forming device 80, and the first magnetic tag forming device 80 has a predetermined magnetic material on the second magnetic tag printed on the printing paper 12. The identification information magnetic tag is formed by forming a first magnetic tag of a low coercive force magnetic material having a size and a shape.

  The printing paper 12 on which the image information and the identification information magnetic tag are formed is magnetized by the permanent magnet 30 and added with the identification information. The identification information added to the printing paper 12 is associated with the image information and the personal computer 70 is not shown. The management table is stored and managed.

  With this configuration, the identification information added to the printing paper 12 and the image information are associated with each other and stored in a management table (not shown) of the personal computer 70 so that the image information such as a document and the printing paper 11 are unique. Thus, it is possible to prevent inadvertent document disclosure of image information such as a document and to prevent leakage of confidential information due to inadvertent copying or the like.

  The method of forming the second magnetic tag (high coercivity magnetic material) in an amount corresponding to the input identification information on the first magnetic tag of the low coercivity magnetic material 830 is the case shown in the first and second embodiments. Detailed explanation is omitted.

  A magnetic tag forming method in the printing apparatus 120 to which the magnetic tag forming apparatus and method according to the present invention are applied will be described.

  FIG. 17 is a flowchart showing a magnetic tag forming method in the printing apparatus 120. The magnetic tag forming method in the printing apparatus 120 will be described with reference to FIG.

  First, the user can identify image information such as a document to be printed on the printing apparatus 120 via the personal computer 70 connected to the printing apparatus 120, and unique identification information and paper that can identify the printing paper 12 on which the image information is printed. A size is input and printing is instructed (step 1700).

  As the identification information, for example, a security level value of the image information to be printed, a user identification number, a password, or the like is input.

  Each signal such as the input image information, identification information, and paper size is input to the control unit 21 of the printing apparatus 110. First, the control unit 22 determines which of the paper feed trays 50a and 50b is based on the input paper size. The printing paper 12 is fed to the carry-in rollers 60a and 60b by one of the paper feed rollers 51a and 51b of the selected paper feed trays 50a and 50b, and is fed to the first magnetic tag forming device (step). 1701).

  The fed printing paper 12 is conveyed to the printing unit 40 by the carry-in rollers 60a and 60b (step 1701).

  When the printing paper 12 is conveyed to the printing unit, the printing unit 40 sets the amount and printing pattern of the second magnetic tag of the high coercive force magnetic material based on the input identification information, and prints based on the set printing pattern. The graphic information of the second magnetic tag to be generated is generated (step 1702).

  The image information and the second magnetic tag are printed on the printing paper 12 (step 1703). The printed output paper on which the image information and the second magnetic tag are printed is conveyed to the first magnetic tag forming unit 80 (step 1704), and the first magnetic tag forming unit 80 transfers the thermal transfer sheet of the low coercive force magnetic material to the second magnetic tag. The identification information magnetic tag is formed by thermal transfer to a predetermined size and shape so as to overlap the tag (step 1705).

  The printing paper 12 on which the image information and the second magnetic tag are printed by the printing unit and the identification information magnetic tag is formed by the first magnetic tag forming device 80 is conveyed so as to pass almost directly below the permanent magnet 30 and is permanently The identification information magnetic tag is magnetized by the magnet 30 and identification information is added (step 1506).

  The identification information formed on the printing paper 12 and the image information are associated and stored in a management table (not shown) of the personal computer 70 (step 1707).

It is a block diagram which shows the structure of the principal part of one Example (Example 1) which applied the magnetic tag formation apparatus and method concerning this invention to the printing apparatus. It is a figure which shows an example of the identification information magnetic tag which formed the 2nd magnetic tag (high coercive force magnetic material) on the 1st magnetic tag (low coercive force magnetic material). FIG. 2 is a block diagram illustrating a configuration of a main part of a printing unit 40 of the printing apparatus 100 illustrated in FIG. 1. It is a block diagram which shows an example of the conversion table A. It is a figure which shows the process in which a 2nd magnetic tag (high coercive force magnetic material) is printed on a 1st magnetic tag (low coercive force magnetic material), and an identification information magnetic tag is formed. It is a figure which shows an example of the frequency characteristic of the alternating magnetic field by the magnetostriction vibration of each identification information magnetic tag. It is a figure which shows an example of the resonant frequency by the magnetostriction vibration of each identification information magnetic tag. It is a figure which shows an example of the intrinsic | native pulse signal at the time of the magnetization reversal of each identification information magnetic tag. 3 is a flowchart showing a magnetic tag forming method in the printing apparatus 100 shown in FIG. 1. It is a block diagram which shows the structure of the principal part of the other Example (Example 2) which applied the magnetic tag formation apparatus and method concerning this invention to the printing apparatus. 4 is a block diagram (plan view) showing a configuration of a main part of the first magnetic tag forming device 80. FIG. 4 is a block diagram (side view) showing a configuration of a main part of the first magnetic tag forming device 80. FIG. It is a figure which shows the structure of the thermal transfer sheet 821 of a low coercive force magnetic material. FIG. 10 is a diagram illustrating a basic process for thermally transferring a low coercive force magnetic material of a thermal transfer sheet 821 to a sheet. It is a flowchart which shows the magnetic tag formation method of the printing apparatus 110 shown in FIG. FIGS. 1 and 10 in which the magnetic tag forming apparatus and method according to the present invention are applied to a printing apparatus are block diagrams showing the configuration of the main part of another embodiment (embodiment 3) shown in FIGS. . 17 is a flowchart showing a magnetic tag forming method of the printing apparatus 120 shown in FIG.

Explanation of symbols

10, 11, 12 Printing paper 20, 21, 22 Control unit 30 Permanent magnet 40 Printing unit 41 Image processing unit 411 Color space conversion unit 412 High coercivity magnetic material amount conversion unit 413 Color correction unit 414 Tone correction unit 415 Drawing unit 42 Image forming unit 420Y to 420B Exposure device 421Y to 421B Charging device 423Y to 423B Developing device 424Y to 424B Photoconductor 425Y to 425B Primary transfer roll 426 Followed roll 427 Secondary transfer roll 428 Drive roll 429 Intermediate transfer body 430 Fixing device 431 Heating Roll 432 Pressure roll
50a, 50b Paper feed tray 51a, 51b Paper feed roller 60a, 60b Carry-in roller 61a, 61b Carry-out roller 70 Personal computer 80 First magnetic tag forming device 100, 110, 120 Printing device

Claims (12)

A first magnetic body having a small coercive force and a second magnetic body having a large coercive force are formed to overlap with each other, and the second magnetic body is magnetized.
A magnetic tag forming method comprising: forming a magnetic tag having different information by changing at least a size of an overlapping portion of the second magnetic body with respect to the first magnetic body. The second magnetic body is
2. The magnetic tag forming method according to claim 1, wherein the magnetic tag is formed by an electrophotographic method or an ink jet method. The first magnetic body is formed in advance on an object to which the magnetic tag is attached in a predetermined shape,
The magnetic tag forming method according to claim 1 or 2, wherein a second magnetic body whose shape and amount are controlled is formed on the first magnetic body formed in advance. Forming the first magnetic body on an object to which the magnetic tag is attached;
The method for forming a magnetic tag according to claim 1, wherein the second magnetic body having a controlled shape and amount is formed on the first magnetic body. Forming the second magnetic body having a shape and amount controlled on an object to which the magnetic tag is applied;
3. The magnetic tag forming method according to claim 1, wherein the first magnetic body is formed on the second magnetic body. The magnetic tag forming method according to claim 3, wherein the object is a print sheet on which predetermined information is printed. In a magnetic tag forming apparatus in an image forming apparatus that outputs a magnetic tag attached to a sheet on which a desired image is formed.
Magnetic body forming means for forming a second magnetic body having a large coercivity whose shape and amount are controlled by superimposing at least one part on a first magnetic body having a small coercivity and having a first shape formed on the sheet. When,
Magnetizing means for magnetizing the second magnetic body formed by the magnetic body forming means,
A magnetic tag forming apparatus, wherein a magnetic tag having different information is formed according to a size of an overlapping portion of the second magnetic body with respect to the first magnetic body. The image forming apparatus includes:
An electrophotographic printer,
The magnetic body forming means includes
The magnetic tag forming method according to claim 7, wherein the second magnetic body is formed by an electrophotographic method using magnetic toner by the printer. The image forming apparatus includes:
An inkjet printer,
The magnetic body forming means includes
The magnetic tag forming method according to claim 7, wherein the second magnetic body is formed by an ink jet method using magnetic ink by the printer. The magnetic tag forming apparatus according to claim 7, wherein the first magnetic body is formed in advance on a sheet to which the magnetic tag is applied. Further comprising forming means for forming the first magnetic body on the paper;
The forming means includes
The magnetic tag forming apparatus according to any one of claims 7 to 9, wherein the magnetic tag forming apparatus is provided before an image forming process of an image forming apparatus that forms a desired image on the paper. Further comprising forming means for forming the first magnetic body on the paper;
The forming means includes
The magnetic tag forming apparatus according to claim 7, wherein the magnetic tag forming apparatus is provided at a subsequent stage of an image forming process of an image forming apparatus that forms a desired image on the paper.

Images