Classifications

• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
  • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
  • G03G21/04—Preventing copies being made of an original
  • G03G21/043—Preventing copies being made of an original by using an original which is not reproducible or only reproducible with a different appearence, e.g. originals with a photochromic layer or a colour background
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
  • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
  • B41M3/14—Security printing
  • B41M3/144—Security printing using fluorescent, luminescent or iridescent effects
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
  • B42D25/29—Securities; Bank notes
• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
  • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
  • G03C5/08—Photoprinting; Processes and means for preventing photoprinting
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
  • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
  • B41M3/14—Security printing
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S283/00—Printed matter
  • Y10S283/902—Anti-photocopy
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S428/00—Stock material or miscellaneous articles
  • Y10S428/916—Fraud or tamper detecting
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
  • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
  • Y10T428/24835—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including developable image or soluble portion in coating or impregnation [e.g., safety paper, etc.]
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
  • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
  • Y10T428/24893—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including particulate material
  • Y10T428/24901—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including particulate material including coloring matter
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
  • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
  • Y10T428/24934—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including paper layer

Definitions

• the invention relates to substrates and methods protected against unauthorized copying for their manufacture.
• the invention relates to substrates with visible information attached to them, which are protected against unauthorized copying, whereby to attach the Information a colorant combination of at least one emitting and uses at least one remitting colorant, the two color shades of Looking at non-perceived fluorescence are similar or the same, being the information is applied by the colorant combination so that the different color fields touch, characterized in that the color locations of the two colorants then one of the trichromatic colors yellow, magenta or cyan correspond and the remitting colorant is an organic or inorganic Pigment is.
• the trichromatic colors are preferably yellow or magenta.
• the remitting colorant is also preferably a organic pigment.
• the trichromatic colors are defined according to the CIELAB system with medium depth of color by the following parameters: non-fluorescent fluorescent Yellow: L * 80 to 90 95 to 105 a * -10 to + 10 -10 to -25 b * 40 to 100 20 to 100 magenta L * 45 to 60 70 to 90 a * 40 to 70 45 to 90 b * -10 to -30 -10 to -25 Cyan L * 45 to 60 a * -20 to -40 b * -30 to -50
• the b * value in the Lab system preferably corresponds to a yellow emitting one Colorant 20 to 100, that of a magenta emitting colorant -30 to -10 and that of a cyan emitting colorant -50 to -30.
• the b * values of the emitting colorant particularly preferably give way less than 10 units from the b * value of the remitting colorant.
• the substrate according to the invention preferably contains pairs of colorants whose color location comes as close as possible to one of the standard printing inks yellow or magenta according to DIN 16539 within the scope of the CIELAB ranges listed above.
• the substrate particularly preferably contains pairs of colorants in which the absorption band of the fluorescent colorant corresponds as completely as possible to the absorption band of a standard printing ink (yellow, magenta,) when the fluorescence is not perceived and the remitting colorant corresponds to such a standard printing ink.
• Their absorption maxima in the reflectance spectrum are preferably not more than 30 nm apart, in particular not more than 20 nm apart.
• Colorant pairs are preferred whose half-wave width, ie the spectral width of the longest-wavelength band at half maximum extinction (E / 2 at ⁇ max ) in the reflectance spectrum is ⁇ 150 nm, preferably ⁇ 100 nm.
• the half-wave width of the absorption spectrum in solution can be used analogously.
• Methods for measuring the reflectance spectra are generally known, e.g. B. from Color Physics for Industry, Roderick McDonald, ed., Society of Dyers and Colorists, 1987, in particular S 152-169.
• the measurement of reflectance spectra of fluorescent colorants is also known and allows, for example, both the measurement of the reflectance including the emission by fluorescence and the pure reflectance with the elimination of the contributions by fluorescence (S 152-169). This last measurement method is meant when the color loci and reflectance curves of the colorant pair if fluorescence is not perceived ".
• the substrate according to the invention preferably also contains pairs of colorants, the Light fastness is as similar as possible, preferably on the 8-scale wool scale differentiate according to DIN 54004 in less than one grade. In particular are suitable colorant combinations that do not or their shade when exposed change in the same way.
• the light fastness is preferably on the 8-scale wool scale according to DIN 54004 for both colorants in at least 2, especially in at least 3.
• Suitable pigments are all color pigments, preferably organic color pigments.
• the preferred remitting colorants are:
• Pigment Yellow 12 Pigment Yellow 13, Pigment Yellow 14, Pigment Yellow 17, Pigment Yellow 74, Pigment Yellow 150, Pigment Red 2, Pigment Red 48: 2, Pigment Red 57, 57: 1, Pigment Red 122, Pigment Violet 19 and Pigment Violet 23.
• Pigments made from cationic or anionic remitting are also preferred Dyes by precipitation as insoluble lacquers of these dyes with appropriate Counterions, e.g. Calcium, barium (for anionic dyes) or Molybdate phosphate, tungsten phosphate, molybdate silicate, tungsten silicate or the anions of organic carboxylic and sulfonic acids (in the case of cationic dyes) be preserved.
• Suitable dyes for this are, for example, C.I. Basic Yellow 29, Basic Yellow 99 and Basic Red 46.
• Preferred emitting colorants are, for example:
• the remission colorant can be composed of several colorants, resulting in the possibility of an exact adaptation of the nuance to the reflection spectrum without fluorescence from the emissive partner.
• the fluorescent colorant can also consist of mixtures, which are preferably so are built up so that no absorption occurs within the emission band.
• the invention further relates to a method for producing substrates visible information on it against unauthorized copying, whereby Attachment of the information such a colorant combination of at least an emitting and at least one remitting colorant whose color nuance when viewed with fluorescence not perceived are similar or the same, and the color locations of the two colorants are one of the Trichromatic colors correspond to yellow, magenta or cyan and the remitting Colorant is an organic or inorganic pigment, characterized in that that the information is applied by the colorant combination so that the touch different color fields.
• the method according to the invention can be, for example, by the various Perform techniques. For example, gravure printing, flexographic printing, offset printing, Engraving, screen printing, ink-jet printing, thermal transfer printing, electrophotography etc. to call. However, colored and / or printed films can also be used the substrate is applied, for example glued on.
• a possible application of the invention is, for example, on Paper with the emitting and remitting colorant print by touching the areas printed with the different colorants should.
• the printing ink contains, for example, the colorants as color pigments (remitting and / or emitting colorant) or as colored with colorants Plastic powder or polymer dispersions (emitting colorant) in for Printing inks usual binders.
• Suitable plastic powders are, for example, polyacrylonitrile, polyester, polycarbonate, Epoxy resin, melamine formaldehyde resins; are suitable dispersions for example styrene acrylates, polyurethanes or polyureas.
• the substrates can also contain other colorants, e.g. B. printed, included to the substrate to be protected the desired Design.
• the substrates can be covered with a transparent film or be covered with a varnish.
• a transparent film or be covered with a varnish.
• These can, for example, UV absorbers or contain other light stabilizers. The lightfastness of the colorants can be so increase.
• the substrate according to the invention is used in all paper techniques protected from color copies of templates.
• Such are e.g. Electrophotography (Color copiers), photography, lithography using appropriate color separations (Print preparation), digital electronic scanning, e.g. based on CCD, possibly followed by electronic data processing and any printing process (laser printer or LED printers based on photoconductive drums, inkjet printers, Thermal transfer, diffusion or sublimation printer, AgX printer.
• the variability of possible color shades of the present invention is intended to be expanded For example, there is still the option of combining colorants to change by having a remitting colorant from the group Magenta or cyan to the emitting as well as to the remitting colorant component the colorant combination.
• the invention therefore further relates to substrates with visible ones attached to them
• Information that is protected against unauthorized copying Attach the information a colorant combination of at least one emitting and at least one remitting colorant, both of which Color nuances when viewing with fluorescence not perceived similar or are the same, the information thus being applied by the colorant combination is that the different color fields touch, characterized in that too two colorants whose color coordinates correspond to the trichromatic color yellow, the remitting colorant is an organic or inorganic pigment remitting colorant is given, the color location of the trichrome color magenta or cyan.
• the colorant added is preferably one with the Trichromatic color cyan.
• the remitting colorant to be added is also preferably an inorganic or organic pigment, especially an organic pigment Pigment.
• the emitting colorant of this object of the invention is preferably a mixture of a fluorescent yellow and a non fluorescent magenta or cyan. With the remitting colorant this
• the subject of the invention is preferably a mixture of a non-fluorescent yellow and a non-fluorescent magenta or Cyan.
• the substrate according to the invention particularly preferably contains pairs of colorants which the absorption band before adding the remitting colorant of the yellow Fluorescent dye component when fluorescence is not perceived with the Absorption band of the standard printing ink yellow matches as completely as possible and the yellow component of the remitting colorant mixture of the yellow standard printing ink corresponds.
• the magenta or cyan components of the emitting and remitting colorant mixtures preferably each correspond to magenta or cyan standard printing ink and are not emitting.
• the emitting and remitting colorant mixtures preferably contain the same amount of the magenta or cyan component.
• a colorant combination of this embodiment of the invention is particularly preferred, which is characterized in that the emitting and the remitting Colorants are each a mixture of a colorant of the trichromatic color yellow and the trichromatic paint magenta, in a mixture weight ratio of 300: 1 to 50: 1, preferably 200: 1 to 100: 1.
• a colorant combination of this embodiment of the invention is likewise preferred, which is characterized in that the emitting and the remitting Colorants are each a mixture of a colorant of the trichromatic color yellow and the trichrome color cyan in a mixture weight ratio of 300: 1 to 2: 1, preferably 100: 1 to 10: 1.
• the above mentioned mixing ratios are identical or approximate same color strengths of the components emitting yellow, remitting Yellow and remitting magenta or emitting yellow, remitting yellow and remitting cyan. In the case of differences in color strength, the conditions are corresponding to convert.
• the emitting yellow component is only half as strong as the remitting one Yellow component
• mixing ratios apply to the emitting colorant mixture from e.g. emitting yellow to remitting cyan from 600: 1 to 4: 1, preferably 200: 1 to 20: 1, provided that the cyan component is about the same color strength as the remitting yellow component.
• Such Adjustments are particularly necessary if not pure colorants, but Preparations are used.
• Such preparations are e.g. Dispersions of Colorants in media suitable for use, e.g. Oils, resins, Binders, water, solvents or mixtures thereof.
• the preferred remitting colorants to be added are those already mentioned above remitting cyan and magenta colorants.
• a particular embodiment of the invention further relates to a method for Manufacture of substrates with visible information on them unauthorized copying, which is characterized in that for both colorants, whose color locations correspond to the trichromatic color yellow, the remitting colorant is an organic or inorganic pigment, a remitting colorant is given, the color location of which corresponds to the trichromatic color magenta or cyan.
• Two offset printing plates were produced in a known manner, one bearing the lettering ORIGINAL "as a positive, the other as a negative.
• the first printing plate was then used on an offset printing press using a printing ink made up of 900 g of the pigment preparation BO-115 Lemon Yellow “® from Sinloihi, Tokyo, Japan, a polymer powder colored with a fluorescent dye, and 100 g of linseed oil, the lettering ORIGINAL "on paper.
• the second printing plate was made using Novavit HKS 3N® printing ink Yellow “from K & E (Karst & Eichinger) Stuttgart a rectangular field around the lettering ORIGINAL ", so that finally a rectangular yellow surface was created without the lettering ORIGINAL "in fluorescent yellow. This font could be easily recognized and read by the eye.
• Example 2 The procedure was as in Example 1, but the lettering ORIGINAL "printed with a printing ink made from 900 g of pigment preparation BO-117 Pink “® from Sinloihi, Tokyo, Japan, a polymer powder colored with a fluorescent dye, and 100 g linseed oil.
• the surrounding rectangle was coated with the Novavit® HKS 27K printing ink Magenta "from the company K & E (Karst & Eichinger) Stuttgart.
• a rectangular, magenta-colored surface was created, which had no gaps in the lettering ORIGINAL "in fluorescent red. This font could be easily recognized and read with the eye.
• a color print cartridge for the Canon BJC 620 Fluorescent Ink® inkjet printer (containing CI Solvent Green 7) was emptied and cleaned. It was filled with a pigment dispersion of Pigment Yellow 74 (BAYSCRIPT ® Yellow VP-SP 25013 from Bayer AG, Leverkusen). The inkjet printer was then used to print a sheet of paper using the printer's own cartridge with fluorescent yellow ink and the cartridge filled as described above in such a way that the printer's own cartridge was used to print a fluorescent yellow rectangle with a lettering printed in yellow with the pigment dispersion ORIGINAL "without gaps. This font could be easily recognized and read with the eye.
• Example 5 The procedure was as in Example 5, except that one cartridge was filled with a pigment dispersion of Pigment Red 122 (BAYSCRIPT® Magenta VP-SP 25012 from Bayer AG, Leverkusen). With the printer's own cartridge with fluorescent red (containing CI Acid Red 92) and this filled cartridge was a fluorescent red rectangle that the lettering ORIGINAL "contained magenta-colored, printed. This font could be easily recognized and read with the eye.
• Pigment Red 122 BAYSCRIPT® Magenta VP-SP 25012 from Bayer AG, Leverkusen.
• LEVANYL® Yellow 5GN-LF has a similar color strength to LEVANYL® Blue G-LF, but a 10 times higher color strength than SP-15 "Lemon Yellow”.
• This print was copied on a color copier.
• the copy showed a light green rectangle in which the lettering ORIGINAL "could not be recognized because it was reproduced in the same color as the surrounding rectangle.
• Example 7 The procedure was as in Example 7, except that both contained mixtures of aqueous pigment dispersions instead of 0.05 parts now 0.1 parts of the aqueous Pigment dispersion of Pigment Blue 15: 3, LEVANYL® Blau G-LF from Bayer AG, Leverkusen.
• LEVANYL® Yellow 5GN-LF is 10 times as high as SP-15 "Lemon Yellow” and 1.5 times as strong as BAYSCRIPT® Magenta VP-SP 25012.
• This print was copied on a color copier.
• the copy showed a yellow-orange rectangle in which the lettering ORIGINAL "could not be recognized because it was reproduced in the same color as the surrounding rectangle.

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Citations (3)

• 2000
  • 2000-03-22 EP EP00105909A patent/EP1041436A1/fr not_active Withdrawn
  • 2000-03-29 US US09/537,374 patent/US6303213B1/en not_active Expired - Fee Related
  • 2000-03-30 JP JP2000093552A patent/JP2000318291A/ja active Pending

Patent Citations (3)

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