Abstract: A multispectral watermark and method for generating the multispectral watermark. A color pattern can be provided, which appears a single color/pattern under a first lighting condition. A watermark can be created based on the color pattern and under a second lighting condition comprising ultraviolet light, while the watermark is viewable with an infrared camera in an infrared spectrum. The watermark can be configured as a multispectral watermark with a metameric pair of inks with one ink of the metameric pair of inks using more CMYK toners that reflect in the infrared spectrum as compared to the other ink among the metameric pair of inks while simultaneously allowing more of the ultraviolet light or less of the ultraviolet light to reach a fluorescing media upon which the multispectral watermark is rendered.

Abstract: Methods and system for creating an infrared effect that can survives copying, can involve providing a metameric pair of pattern inks, wherein a first pattern ink reflects higher in an infrared spectrum as compared to a second pattern ink among the metameric pair of pattern inks, wherein the second pattern ink is less reflective than the first pattern ink. For the second pattern ink that is less reflective than the first pattern ink, a pattern can be created for the second pattern ink that is larger and less scattered than an existing design for a pattern ink. A color of media can be used as a common color for the metameric pair of patterns and inks to create an infrared effect from the metameric pair of pattern inks that survives copying on the media.

Abstract: Methods and system for creating an infrared effect that can survives copying, can involve providing a metameric pair of pattern inks, wherein a first pattern ink reflects higher in an infrared spectrum as compared to a second pattern ink among the metameric pair of pattern inks, wherein the second pattern ink is less reflective than the first pattern ink. For the second pattern ink that is less reflective than the first pattern ink, a pattern can be created for the second pattern ink that is larger and less scattered than an existing design for a pattern ink. A color of media can be used as a common color for the metameric pair of patterns and inks to create an infrared effect from the metameric pair of pattern inks that survives copying on the media.

Abstract: A method and system for rendering a watermark with near perfect infrared colors can involve providing an infrared pattern ink having a color with a lower spectral reflectance in an infrared spectrum, replacing the color having the lower spectral reflectance with a replacement color constituting a combination of colors having a higher spectral reflectance in the infrared spectrum, them matching in a visible spectrum, the replacement color with the color having the lower spectral reflectance in the infrared spectrum, and rendering a watermark as a metameric color pair including the infrared pattern ink and replacement color. Alternatively, a watermark may be created by defining a first color pattern having a CMYK value derived from a particular LAB value with a lower toner stack and a higher reflectance in an infrared spectrum as compared to a second color pattern having a second CMYK value derived from the same LAB value.

Abstract: A method, system, and apparatus for rendering a security mark on a recording medium can involve creating a metameric pair of fluorescent inks with a first fluorescent ink among the metameric pair of fluorescent inks that blocks UV light and a second fluorescent ink among the metameric pair of fluorescent inks that does not block UV light, configuring at least one fluorescent ink among the metameric pair of fluorescent inks with a first pattern based on a constant pixel high surface and at least one other fluorescent ink among the metameric pair of fluorescent inks with a second pattern based on a substantial amount of white space, and defining a security mark for rendering on a recording medium with the metameric pair of fluorescent inks and based on the first pattern and the second pattern.

Abstract: Methods and systems for rendering a transparent pantograph pattern. A background path and a foreground path for a pantograph pattern can be determined. An intersection internal to the background path and external to foreground path that is to be marked can be defined. Areas to be masked can be defined with respect to the pantograph pattern. The pantograph pattern can be then rendered as a transparent vector pattern pantograph by writing a background based on the background path and a foreground based on the foreground path and the areas defined as masked.

Abstract: Methods and systems for creating labels from a template can involve correcting an image of a form captured by an image-capturing device, detecting in the image of the form a group of features including one or more polygons, and one or more writable areas in polygon(s), creating a template of the form based on the group of features detected in the image, and transmitting the template electronically to a requester of the template.

Abstract: A method of forming an article which includes a diffraction grating, an article, and an apparatus for forming the article by printing are described. The method includes forming a periodic structure by printing a first set of parallel lines on a first side of a transparent substrate with a marking material and printing a second set of parallel lines on a second side of the transparent substrate with a marking material, the first and second sets of lines, in combination, defining a grating having a frequency and a spacing between lines which causes incident light to be diffracted into a plurality of beams travelling in different directions.

Abstract: Methods and systems for creating labels from a template can involve correcting an image of a form captured by an image-capturing device, detecting in the image of the form a group of features including one or more polygons, and one or more writable areas in polygon(s), creating a template of the form based on the group of features detected in the image, and transmitting the template electronically to a requester of the template.

Abstract: Methods and systems for rendering a transparent pantograph pattern. A background path and a foreground path for a pantograph pattern can be determined. An intersection internal to the background path and external to foreground path that is to be marked can be defined. Areas to be masked can be defined with respect to the pantograph pattern. The pantograph pattern can be then rendered as a transparent vector pattern pantograph by writing a background based on the background path and a foreground based on the foreground path and the areas defined as masked.

Abstract: A method and system for rendering a correlation mark, can involve determining a combined path of a foreground comprising a first layer based on a first correlation pattern and a background comprising a second layer based on a second correlation pattern. The size of the second layer of the second layer can be calculated based on a trade off between how well the second layer hides a correlation effect and a readability of the second layer. The combined path can be filled with variable data at the size of the second layer at a selected color or a third correlation pattern to produce a two-layer correlation mark having a variable data hiding layer for rendering on or through a recording medium.

Abstract: A method and system for reducing the appearance of a security feature viewed under UV (Ultra Violet) illumination can include selecting a colorant, wherein the colorant comprises a first UV spectral reflectance property, selecting a matching colored media, which matches a color of the colorant and which comprises a second UV spectral reflectance property that is different from the first UV spectral reflectance property, and adjusting the color of the colorant and a color of the matching color media to match one another and produce an adjusted colorant that facilitates a reduction in a visibility of the security feature based on the adjusted colorant.

Abstract: A marking color of a marking material (e.g., ink, toner, etc.) within a printer has a marking spectral reflectance property. Print media that has a media color approximately matching the marking color, but a different media spectral reflectance property, is identified (to form a geometric metameric pair). Differently colored calibration patches of the marking material are printed on a test sheet of the print media. A calibration patch, in which the printed color of the marking material most closely visually matches the media color, is used to identify a revised marking color. A watermark is printed on the print media using the revised marking color. The difference between the marking spectral reflectance property and the media spectral reflectance property causes the watermark to be visibly observable on the print media from one angle but prevents the watermark from being visibly observable from a different angle.

Abstract: A method for rendering a correlation mark on a recording medium can involve encoding a pattern based on a correlation effect color based on a color recipe that includes a high density of one primary color and a mid-to-low density of at least one other primary color, and adjusting the pattern to ensure that the encoding is lost in a resulting rendering of a correlation mark embedded with the pattern. The pattern imposed on the correlation mark is not readily visible in an original without a decoding key. The correlation mark can include a frequency that is sufficiently high so that a copy of the correlation mark may not reproduce with the pattern.

Abstract: A first pattern and the second pattern in an original include relatively lighter markings within a relatively darker background. The first pattern differs from the second pattern by including non-printing patches between the relatively lighter markings. When exposed to ultraviolet light, the underlying print media fluoresces in response to the ultraviolet light at the non-printing patches, revealing hidden security printing features. When a scanned image is printed on a second sheet of print media to produce a copy of the original, the copy maintains distinct markings at locations where the relatively lighter markings and the non-printing patches appear because the spacing interval of the relatively lighter markings and the non-printing patches is at or above the minimum resolution of the scanner. Thus, when the original and the copy are exposed to ultraviolet light, both fluoresce the ultraviolet light where the non-printing patches appear in the original.

Abstract: A printable electronic document is received into a computerized device. The printable document contains original markings that can be printed on print media to produce a printed document. However, before printing, a computerized device adds first hidden markings to the printable electronic document. Such first hidden markings have a first vector graphic size. Further, the computerized device removes a pattern from the first hidden markings in the printable electronic document and adds (only to the removed pattern in the printable electronic document) second hidden markings that have the same vector graphic size as, but are out of phase with, the first hidden markings. Also, the computerized device adds geometrically shaped distraction markings to the printable electronic document. The geometrically shaped distraction markings have a second vector graphic size that is much larger than the first vector graphic size of the first and second hidden markings.

Abstract: A method of forming an article including a diffraction grating includes forming a periodic structure by printing lines on a first side of transparent substrate with a toner. The lines have a frequency and a spacing which causes incident light to be diffracted into a plurality of beams travelling in different directions. The method can be used for forming reflective or transmissive diffraction gratings using xerographic printing techniques.

Abstract: A marking color of a marking material (e.g., ink, toner, etc.) within a printer has a marking spectral reflectance property. Print media that has a media color approximately matching the marking color, but a different media spectral reflectance property, is identified (to form a geometric metameric pair). Differently colored calibration patches of the marking material are printed on a test sheet of the print media. A calibration patch, in which the printed color of the marking material most closely visually matches the media color, is used to identify a revised marking color. A watermark is printed on the print media using the revised marking color. The difference between the marking spectral reflectance property and the media spectral reflectance property causes the watermark to be visibly observable on the print media from one angle but prevents the watermark from being visibly observable from a different angle.

Abstract: To generate a security mark, a system prints first and second patterns on a first document using non-infrared absorbing colors. A print engine will receive the substrate and create a copy of the security mark onto a second document. When printing the second document the print engine may use ink of an infrared-absorbing color, such as black, to print a hidden security element of the security mark. When an infrared camera captures a digital image of the second document and the captured image is displayed, the captured image will reveal the hidden security element.

Abstract: A method and system for rendering a gloss effect image on a recording medium, can involve creating with a processor, a mirror of a gloss effect image of a gloss mark located on a front side of a recording medium, and rendering with a color printer having marking materials, the mirror of the gloss effect image on a back side of the recording medium directly opposite the gloss mark located on the front side of the recording medium. The processor can include a digital front processor that communicates with the color printer. The gloss effect image of the gloss mark can be, for example, a micro gloss feature or a macro gloss feature.