Non-visualized information recording medium and apparatus for detecting the same

• US 5,763,891 A
• Filed: 06/09/1997
• Issued: 06/09/1998
• Est. Priority Date: 10/26/1992
• Status: Expired due to Fees

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Nagase, Tetsuya, Hayashi, Toshio, Utagawa, Tsutomu, Sasanuma, Nobuatsu, Nakai, Takehiko, Arimoto, Shinobu, Yoshinaga, Kazuo
• Primary Examiner(s): Hannaher, Constantine
• Application Number:
  US08/871,629
• Time in Patent Office: 365 Days
• Field of Search: 250/271, 250/253, 250/341.7, 250/459.1, 250/458.1
• US Class Current: 250/459.1
• CPC Class Codes: B41M 3/144 using fluorescent, luminescent or iridescent effects
• CPC Class Codes: B42D 25/29 Securities; Bank notes
• CPC Class Codes: G03G 21/046 by discriminating a special original, e.g. a bank note
• CPC Class Codes: G07D 7/12 Visible light, infrared or ultraviolet radiation
• CPC Class Codes: G07D 7/121 Apparatus characterised by sensor details
• CPC Class Codes: H04N 1/00846 based on detection of a dedicated indication, e.g. marks or the like
• CPC Class Codes: H04N 1/00864 Modifying the reproduction, e.g. outputting a modified copy of a scanned original details of composing or otherwise geometrically modifying originals H04N1/387
• CPC Class Codes: H04N 1/00867 with additional data, e.g. by adding a warning message details of embedding additional information in an image H04N1/32144
• CPC Class Codes: H04N 1/00875 Inhibiting reproduction, e.g. by disabling reading or reproduction apparatus
• CPC Class Codes: H04N 1/00883 Auto-copy-preventive originals, i.e. originals that are designed not to allow faithful reproduction

Abstract

A method and apparatus for processing a medium on which an identification mark is formed using a plurality of recording materials having fluorescent characteristics in wavelength regions almost overlapping with each other and having maximum absorbing characteristics at different wavelengths. The method and apparatus include the features of detecting, on the medium, the identification mark which is comprised of the plurality of recording materials and controlling an operation of a processing apparatus in accordance with a result of the detecting of the identification mark.

Claims

1. An apparatus for determining whether a specific material is present in media, comprising:

irradiation means for irradiating the media with light having a first wavelength and a light having a second wavelength different from the first wavelength, wherein the light generated by said irradiation means does not include light of a specific wavelength, wherein the media generate light of the specific wavelength different from the first and second wavelengths in response to irradiation by light of the first or second wavelengths when a specific material is present in the media;

detection means for detecting light having the specific wavelength generated by the media when the media is irradiated by said irradiation means with the light having the first wavelength, and for detecting light having the specific wavelength generated by the media when the media is irradiated by said irradiation means with the light having the second wavelength; and

determining means for determining whether the specific material is present in the media, on the basis of a detected result from said detection means.

2. An apparatus according to claim 1, wherein the light having the first wavelength and the light having the second wavelength are both visible light.

3. An apparatus according to claim 2, wherein said detection means includes a filter for intercepting the light having a visible wavelength.

4. An apparatus according to claim 3, wherein the specific wavelength is an invisible wavelength.

5. An apparatus according to claim 4, wherein said irradiation means comprises a lamp and a filter for intercepting light having the invisible wavelength.

6. An apparatus according to claim 1, wherein the specific material is an invisible material.

7. An apparatus according to claim 1, wherein the media include securities.

8. An apparatus according to claim 1, wherein the first wavelength and the second wavelength differ from each other by at least 50 nm or more.

9. An apparatus according to claim 1, wherein said apparatus includes a copy machine.

10. An apparatus according to claim 1, further comprising control means for suspending part of the function of said apparatus in accordance with the determination of said determining means.

11. An apparatus according to claim 1, wherein the light having the specific wavelength is generated when the specific material absorbs the light having the first wavelength and the light having the second wavelength.

12. An apparatus for determining whether a specific material is present in media, comprising:

irradiation means for irradiating the media with light having a first wavelength and a light having a second wavelength different from the first wavelength, wherein said irradiation means does not generate light of a specific wavelength, wherein the media generate light of the specific wavelength when absorbing light of the first or second wavelengths when a specific material is present in the media;

detection means for detecting light from the media having the specific wavelength when the media is irradiated with and absorbs light having the first wavelength by said irradiation means, and for detecting light from the media having the specific wavelength when the media is irradiated with and absorbs light having the second wavelength by said irradiation means; and

determining means for determining whether the specific material it present in media on the basis of a detected result from said detection means.

13. An apparatus according to claim 12, wherein the light having the first wavelength and the light having the second wavelength are both visible light.

14. An apparatus according to claim 13, wherein said detection means includes a filter for intercepting the light having a visible wavelength.

15. An apparatus according to claim 12, wherein the specific wavelength is an invisible wavelength.

16. An apparatus according to claim 15, wherein said irradiation means comprises a lamp and a filter for intercepting light having the invisible wavelength.

17. An apparatus according to claim 12, wherein the specific material is an invisible material.

18. An apparatus according to claim 12, wherein the media include securities.

19. An apparatus according to claim 12, wherein the first wavelength and the second wavelength differ by at least 50 nm or more.

20. An apparatus according to claim 12, wherein said apparatus includes a copy machine.

21. An apparatus according to claim 12, further comprising control means for suspending part of the function of said apparatus in accordance with the determination of said determining means.

22. A method for determining whether a specific material is present in media, comprising:

an irradiation step for irradiating media with light having a first wavelength and a light having a second wavelength different from the first wavelength and not including light having a specific wavelength, wherein irradiating the media with light of the first or second wavelengths when a specific material is present generates light of the specific wavelength;

a detection step of detecting the light having the specific wavelength generated by the media when the media is irradiated in said irradiation step with the light having the first wavelength and for detecting light having the specific wavelength generated by the media when the media is irradiated in said irradiation step; and

a determining step of determining whether the specific material is present in the media, on the basis of a detected result in said detection step.

23. A method for determining whether a specific material is present in media, comprising:

an irradiation step for irradiating media with a light having a first wavelength and a light having a second wavelength different from the first wavelength, and not including light having a specific wavelength, wherein when the specific material is present in the media, and the media absorbs light of the first or second wavelengths, the media generates light of the specific wavelength;

a detection step for detecting the light having the specific wavelength generated by the media when the media is irradiated with and absorbs the light having the first wavelength in said irradiation step, and for detecting light having the specific wavelength generated by the media when the media is irradiated with and absorbs the light having the second wavelength in said irradiation step; and

a determining step of determining whether the specific material is present or not in the media, on the basis of a detected result in said detection step.