Safeguard against falsification of securities and the like which is suitable for automatic machines

Claim 2

A valuable security and the like, having safeguard elements against forgery or falsification which can be mechanically examined using light of the visible, ultraviolet, or infrared spectral regions and which are effective, particularly, against erasure, and carrying the ink-impressed information print, said valuable security and the like comprising, in combination, a paper; and a homogeneous protective coating on the paper; the paper, the protective coating and the printing ink having respective light-detectable properties selected from the group consisting of reflectance and fluorescence properties; the respective light-detectable properties of the paper, the protective coating and the printing ink being such that any damage to the protective coating is detectable at a preselected wavelength of light; the reflectance of the protective coating at the wavelength used to read the information print being considerably greater than the reflectance of the printing ink, and the reflectances of the protective coating and the printing ink, at a different wavelength, being substantially equal, while the reflectances of the paper and the protective coating at said different wavelength differ measurably from each other.

Claim 3

A valuable security and the like, having safeguard elements against forgery or falsification which can be mechanically examined using light of the visible, ultraviolet or infrared spectral regions and which are effective, particularly against erasure, and carrying an ink-impressed information print, said valuable security and the like comprising, in combination, a paper; and a homogeneous protective coating on the paper; the paper, the protective coating and the printing ink having respective light-detectable properties selected from the group consisting of reflectance and fluorescence properties; the respective light-detectable properties of the paper, the protective coating and the printing ink being such that any damage to the protective coating is detectable at a preselected wavelength of light; said ink-impressed information print comprising a narrow, elongated substantially rectilinear fluorescent stripe intersected by a plurality of bar-shaped symbols spaced from each other longitudinally of the stripe; the bar-shaped symbols and the spaces therebetween being arranged in groups longitudinally of the stripe, and the total of the bar-shaped symbols and the spaces therebetween, in the unaltered original condition of said security and the like, being equal to a preselected number which is constant for all said securities and the like; whereby the erasure or addition of a bar-shaped symbol can be detected by examination of the security under ultra-violet light, due to the total of the bar-shaped symbols and the spaces therebetween differing from such preselected number.

Claim 4

A valuable security and the like, having safeguard elements against forgery or falsification which can be mechanically examined using light of the visible, ultraviolet or infrared spectral regions and which are effective, particularly against erasure, and carrying an ink-impressed information print, said valuable security and the like comprising, in combination, a paper; and a homogeneous protective coating on the paper; the paper, the protective coating and the printing ink having respective light-detectable properties selected from the group consisting of reflectance and fluorescence properties; the respective light-detectable properties of the paper, the protective coating and the printing ink being such that any damage to the protective coating is detectable at a preselected wavelength of light; said ink-impressed information print comprising a narrow, elongated substantially rectilinear fluorescent stripe intersected by a plurality of bar-shaped symbols spaced from each other longitudinally of the stripe; the bar-shaped symbols and the spaces therebetween being arranged in groups longitudinally of the stripe, and the total of the bar-shaped symbols and the spaces therebetween, in the unaltered original condition of said security and the like, being equal to a preselected number which is constant for all said securities and the like; whereby the erasure or addition of a bar-shaped symbol can be detected by examination of the security under ultra-violet light, due to the total of the bar-shaped symbols and the spaces therebetween differing from such preselected number.

Claim 5

A valuable security and the like, according to claim 2, wherein the number of bar-shaped symbols and spaces therebetween in each group is constant for the security.

Claim 6

A valuable security and the like, carrying information which is legible in the visible, ultraviolet, or infrared spectral regions and including a protection against falsification, which protection can be mechanically evaluated said valuable security and the like comprising, in combination, a paper; a homogeneous protective coating on said paper; the paper, the protective coating and the printing ink having light-detectable properties selected from the group consisting of reflectance and fluorescence properties such that said information can be read either visually, mechanically, or both visually and mechanically at a wavelength of the reading light source selected in accordance with the light-detectable properties, and the protective coating can be checked for intactness by checking the contrast between the paper and the protective coating at a wavelength of the checking light source selected in accordance with such light-detectable properties.

Claim 7

A valuable security and the like, carrying information which is legible in the visible, ultraviolet, or infrared spectral regions and including a protection against falsification, which protection can be mechanically evaluated said valuable security and the like comprising, in combination, a paper; a homogeneous protective coating on said paper; the paper, the protective coating and the printing ink having light-detectable properties selected from the group consisting of reflectance and fluorescence properties such that said information can be read either visually, mechanically, or both visually and mechanically at a wavelength of the reading light source selected in accordance with the light-detectable properties, and the protective coating can be checked for intactness by checking the contrast between the paper and the protective coating at a wavelength of the checking light source selected in accordance with such light-detectable properties.

Claim 8

A security according to claim 4, wherein the protective coating has fluorescent properties, with the spectral region of the fluorescent emission not coinciding with the spectral region of the fluorescent emission of the security and the printing ink.

Claim 9

A security according to claim 5, wherein the protective coating has fluorescent properties, and the security and the printing ink do not fluoresce.

Claim 10

A security according to claim 4, wherein the security contains fluorescent additions, and the fluorescent effect is blocked by the protective coating contrasting with the printing ink.