BR112022001060B1 - DIGITAL PROOFING PROCESS OF METALLIC DECORATION ARTICLE - Google Patents

Abstract

DIGITAL PROOFING PROCESS OF METALLIC DECORATION ARTICLE. Described herein is a method for identifying a best match to a metal decorative item target color and distributing the best match to interested third parties for ongoing validation. Does the method create a soft proof database that matches, for example, PantoneLIVE target colors? and establishes a defined digital inkjet standard to be within desired tolerances. A system that implements the method is also described.

Description

[0001] The present application claims ownership of Provisional Patent Application No. 62/889,597, filed on August 21, 2019, which is incorporated herein by reference in its entirety and for all purposes.

FIELD OF INVENTION

[0002] The present disclosure relates to color design for metallic articles to which colored metallic decorative article inks will be applied, such as application by a digital printing process, and to providing the best match of a color to a color target through the digital proofing process described in this document. Such metal items include packaging such as aluminum cans, but may include other metal items such as flat panel signage and artwork.

BACKGROUND OF THE INVENTION

[0003] Color selection of customer colors for printing on metal surfaces for packaging (e.g., aluminum cans) and other items is currently a slow and arduous process that requires the ink company, manufacturer or converter to Cans actually and physically print paints onto a metal surface. Although the matter may appear simple at first, in reality the process is complicated, as satisfying a customer's requirement for a target color may require selecting a particular color from literally hundreds of closely related colors that differ merely in way. gradual, for example, in the CIELAB color space. Although, for example, it is possible to start by selecting a color from a color library book, such as Pantone books, what that color looks like when actually printed on a substrate may not live up to expectations. Factors that are considered in how the color may actually look include ambient lighting and the material on which the color is printed. Other factors that can affect how a color may actually appear once printed or applied to a metal surface may include reflectivity of the metal surface (which may be affected by the curved surface of a can), and the opacity/transparency of the color that is printed. Metamerism can also be a problem. Selecting a paper color sample from a Pantone library book can therefore be uncertain, subjective, or both.

[0004] A metallic decorative article color is the color of a fit-for-purpose printing ink applied to a metallic decorative article substrate using the metallic decorative article application process or a method that simulates the metallic decorative article application process. metallic decoration (as in laboratory conditions, the IGT tester).

[0005] Although relying on the opinion of experienced colorists who identify a best match for a target color is a possible way to select a best match, such an approach still remains open to individual interpretation.

[0006] There is currently no method for translating a measured color file (such as a predefined Pantone metallic decor color file, which may be a PantoneLIVE color file) that can color a metallic decor paint formulation for application to a metallic substrate, in a physical representation of such color on a metallic substrate without preparing actual samples or proofs of the inks from such substrates or without supplying wet inks. Furthermore, third parties for a design project, which, for example, may be developers, printers, customers and manufacturers are typically located remotely from each other in different parts of the country or even in different parts of the world. Physical samples of ink printed on substrates would be sent to each third party to evaluate the color appearance and whether it matches the target color. This compounds the problem, as shipping time slows down the color evaluation and approval process. The advantage of a predefined color file, as discussed above, is that since it is predefined, it is a color that does not require interpretation when performing paint matching and formulating. A measured color file is a predefined digital target like that found in the PantoneLIVE libraries.

SUMMARY OF THE INVENTION

[0007] Described herein is a digital proofing process for selecting a metallic decorative item color from a digital color database that is a best match for a target color. Matching occurs with a high degree of accuracy.

[0008] In one aspect, described herein is a method for identifying a best match to a target color of metallic decorative article and distributing the best match to interested third parties, which comprises the steps of: A) selecting a first color candidate as a match to a target metallic decor item color from a metallic decor item paint color database; B) generating in a computer-implemented environment an array of colors comprising the first candidate color and one or more additional candidate colors that differ from each other in color increments; C) print the arrangement of colors on a transparent sheet to create a digital proof of the plurality of colors; D) placing the digital proof on a metallic substrate to provide a simulation of the application of colored paints from a metallic decorative article to the metallic substrate; E) select a color from the color arrangement in the digital proof as a best match for the target color of the metallic decorative item; and F) Store best match color data for the target color of metallic decorative article in a computer storage location for retrieval by other third parties.

[0009] In one aspect, step F is an F1 step in which the color data for the best match to the target color of metallic decorative article, together with other pertinent information (e.g., printer separations, information of CIELAB color space, digital tester related information such as tester model and digital tester settings, etc.), are saved to computer storage, such as a cloud storage device, where they can be distributed or retrieved by one or more third parties with access to the storage device. At least one or more such third parties may replicate the conditions and components employed in the digital proofing process described herein, as steps A through E, and in doing so, provide confirmation that the chosen color is the best match, or disagree with the best match determination. Such one or more third parties may be those with access to the ORIS CGS Flex Pack software, which can run on Windows 7 or higher operating system, (16 GB RAM, 512 HDD (SSD if possible)) and a compatible graphics card.

[0010] In another aspect, step F is a step F2 in which the printed color that is the best match for the target color of metallic decorative article is measured by an optical device such as a spectrophotometer in order to determine whether, in an acceptable tolerance, the output of the digital taster accurately reproduces the previously defined digital representation of the desired color and to provide validation data to validate the printed color against the previously defined digital representation of the desired color. Data obtained from spectrophotometer measurements can be stored in a database such as the Sun Digital Proofing MD 2P database or spot color database, which are made available in a cloud-based solution such as myColorCloud, which can be accessed through the SunColorQC software platform. In this way, reports and quality control information about whether a color can continue to be achieved within specified tolerances using the current ink mix in a given printer can be provided. The stored data includes coordinate and color reflectance data from CIELAB.

[0011] Measured data from an inkjet print is not correlated to measurements from a metallic decorative article ink print, and thus the approval process for selected best match colors is a visual one. Therefore, color matching in digital print patterns to physical prints from PantoneLIVE is a visual and it is through the visual process that patterns are established. Colorists, i.e. color matchers, who perform matching and validation are trained to observe small color differences based on their experience, which may be extensive, so that the selected or defined soft proof color is within tolerance. desired in terms of its comparisons to the physical PantoneLIVE target color that will satisfy all third parties in the project design.

[0012] The validation data referred to above are reports generated by quality control software that indicate whether the digital proof matches the predefined target color that has been entered into the Sun Digital Proofing MD 2P database. This is similar to a certificate of compliance that indicates that the digital proof is within acceptable tolerances.

[0013] In one aspect, selecting a first candidate color in step A is selecting a PantoneLIVE color or a custom color.

[0014] In one aspect, the spot color database is a customized spot color database.

[0015] In one aspect, one or both of steps F1 and F2 can be performed.

[0016] In one aspect, the target color and the best match for the target color of metallic decorative article are spot colors, such as custom spot colors.

[0017] The custom color is one that is not a Pantone/PantoneLIVE reference color.

[0018] In one aspect, the target color is provided by a target color representation, such as a color sample comprising the target color printed on a substrate.

[0019] In one aspect, the database of step A is a database that contains one or more Pantone libraries of metallic furnishing colors, such as the PantoneLIVE™ color libraries for metallic furnishing colors. metallic.

[0020] In one aspect, the computer-deployed environment mentioned in step B includes a central processing unit (CPU) that runs the CGS ORIS Flex Pack software package. The Step A database can also be accessed by the CPU. The CPU can be a microprocessor. In an alternative arrangement, software and databases can be stored remotely, such as in a cloud computing environment.

[0021] In one aspect, step A selection of a first candidate color is accomplished by selecting a color from a PantoneLIVE™ metallic decor item color database or a third party custom color database. hosted in a myColorCloud library hosted by PantoneLIVE.

[0022] In one aspect, the Pantone color database is linked to the CGS ORIS Flex Pack software package and step A selection of a first candidate color is performed using the CGS ORIS Flex Pack software package to select a color from the Pantone color database, such as the PantoneLIVE™ metallic furnishings color database.

[0023] In one aspect, step A selection of a first candidate color is accomplished by optically analyzing a physical specimen that includes the target color of metallic decorative article with an optical analyzer to obtain color data such as printer separations. for the target color representation and then assigning the same data into a computer system capable of performing a color selection, such as the environment mentioned in step B. The computer system may be one that performs the CGS ORIS Flex Pack software package, which is linked to the Pantone metallic furnishing color database, i.e. the PantoneLIVE™ metallic furnishing color databases. The physical specimen may be the color sample. The optical analyzer can be a spectrophotometer. Optical analysis can be performed in a light booth.

[0024] In one aspect, step A selection of a first candidate color from a Pantone metallic decor item color database is performed by a third party who selects it from a database linked to the CGS ORIS Flex Pack software package.

[0025] In one aspect, the first candidate color and one or more additional candidate colors that differ gradually from each other differ in a color space, such as the CIELAB color space, and or differ gradually in printer separations. , which are the color mixtures comprising each of the colors (i.e., the first candidate color and one or more additional candidate colors).

[0026] In one aspect, the color data associated with the best match for the target color of metallic decorative article that is stored in a computer storage location is one or more of the printer separations, color space information of CIELAB and information related to the digital fitting room.

[0027] In one aspect, printing of the digital proof in step C occurs on a Roland digital proofer, such as the Roland Versa CAMM VS-300i Eco Solvent Inkjet Printer.

[0028] In one aspect, the first candidate color and one or more additional candidate colors are visually arranged in an array comprised of cells corresponding to the first candidate color and one or more additional candidate colors.

[0029] In one aspect, the array is a honeycomb array comprised of cells corresponding to the first candidate color and one or more additional candidate colors.

[0030] In one aspect, the best match for the metallic decorative article target color selected in step E is saved to computer storage by selecting a cell corresponding to the best match that is present in a computer-generated visual representation of the color arrangement, such as a color arrangement, for example, a color honeycomb arrangement.

[0031] In one aspect, printer separations of the color from the soft proof that is selected in step E are saved to computer storage.

[0032] In one aspect, the metallic substrate of step D has a curved surface.

[0033] In one aspect, selecting the best match in step E comprises: evaluating the digital proof comprising the first candidate color and one or more additional candidate colors as it is positioned on the metal substrate in a light box and inspecting each color at angles of 0°, 45° and 90° under D50 light source, as shown in Figures 18A, 18B and 18C, and then select the best match for the target color of metallic decorative article.

[0034] In another aspect, the color that is selected as a best match for the target color of metallic decorative article in step E is selected to be the first candidate color in step A, and then steps B to F, and, optionally, steps F1 and/or F2 are performed again.

[0035] In another aspect, described herein is a system for creating a digital proof of a metallic decorative article paint of a specific color that represents a closest match to a target color; one or more inputs through which a first candidate color for a target color match is received by the system (which could be entered by selection or manual input via information received from an optical analyzer); a target color matching generator that generates a plurality of colors comprising the first candidate color and one or more additional candidate colors that differ from each other in color increments; a digital proofer for printing the plurality of colors on a transparent sheet to create a digital proof comprising the plurality of colors printed on the sheet; an input for selecting a color from the array of additional candidate colors printed on the soft proof as a best match for the metallic decor item target color, and accessible storage for storing best match color data.

[0036] In one aspect, the digital proof is printed on a Roland inkjet printer.

[0037] In one aspect, the system additionally includes an optical analyzer such as a spectrophotometer, preferably a spherical spectrophotometer.

[0038] In one aspect, the first candidate color for a target color match that is received by the system is received from a database or received from input from a manual color target.

[0039] The terms “differentiate” or “differentiation”, “from each other in color increments” refer to incremental differences in printer separations in one or more color directions.

[0040] In another aspect, described herein is a method of selecting and validating a color standard, such as a best match color, comprising: A) accessing a database comprising Pantone reference colors; B) correlate a Pantone reference color present in an accessible design format present in the database to a digital proof color target; C) printing the digital proof color target on a transparent sheet to provide a digital proof; D) placing the digital proof on a metallic substrate to provide a simulation of the application of colored paint from a metallic decorative article to a metallic substrate; and E) measuring the digital proof while placed on the metal substrate with a spherical spectrophotometer and comparing generated spectrophotometer data to the corresponding data for the digital proof color target present in an additional database in order to validate the digital proof as a digital proof color target reproduction.

[0041] In a further aspect, Pantone reference colors are present in a project file.

[0042] In another aspect, the accessible design format is one that is imported into a CGS ORIS FlexPack software.

[0043] In a further aspect, the database is a Sun Digital Proofing MD 2P database.

[0044] In another aspect, the database is hosted in a cloud computing environment, such as the CGS cloud.

[0045] In a further aspect, the digital proof color target is a Pantone target, such as PMS 485C mapped to SUN 485D O 2P or SUN 485D T 2P Sun Digital Proofing MD 2P target, i.e., PMS 485C mapped to SUN 485D O 2P or SUN 485D T 2P.

[0046] In a further aspect, the digital proof color target is an opaque or transparent color.

[0047] In a further aspect, the additional database is a SunColorQC database.

[0048] In a further aspect, the SunColorQC database is stored in myColorCloud.

[0049] Correlation is a matter of using the same color reference, for example, PMS 485C correlates to SUN 485D O 2P or SUN 485D T 2P. For a custom color (non-PantoneLIVE), the user then measures the desired physical custom color print or distribution or is even provided with a cxf measurement of the target color and this information can be imported into PantoneLIVE Visualizer or X-software. Rite Color iQC, which compares this measurement to the entire PantoneLIVE library to determine if there is an existing PantoneLIVE color that matches this custom target within a desired tolerance. If found, this PantoneLIVE color can be used instead of the custom color. If not, then the custom color is used and the user will create the digital match as described previously, rather than just using the predefined PantoneLIVE color.

[0050] The inventions described in the present disclosure solve an existing problem by creating a simulation for the color of a metallic decorative article by wrapping an inkjet printed transparent film that contains an arrangement of printed colors, as in an arrangement honeycomb on a metal substrate and captures color data as both inkjet printer separation values and measured color data to be used remotely in recreating the simulation process. The process described in this document creates a digitally printed inkjet version of a physically printed metallic decorative item ink by setting the color opacity and generating color iterations, selecting a best match for a color. target, optionally refining the best match with additional interactions, and validating the determined best match. This process can be carried out by making selections of colors found in the PantoneLIVE™ Metallic Decorative Item Dependent bookstore, as candidate colors for the best match to a target color. Subsequent distribution and quality control performed on the best match color provides ongoing validation.

[0051] The amount of opacity and/or transparency of a color are design choices (such as a choice made by the brand owner), as in final production the brand owner may desire a reflective/transparent color or to slightly mask the can of aluminum on which the color is printed by adding white to increase the opacity of the printed ink. The brand owner may require a mix of transparent and opaque colors in a design to create contrast and effect. These can be adjusted during the color selection and color creation process described in this document.

[0052] In another aspect, described herein is a method for creating a digital database comprised of colors stored in a digital library which database can be accessed to find correspondences between PantoneLIVE™ colors and target colors. Database sets defined digital inkjet standards for PantoneLIVE™ at desired tolerances, that is, the predefined soft proof database that was created in steps A through E, or in other words, the proof representation of PantoneLIVE™ color, so that the third party does not have to involve their own color interpretation, which if they did, would add confusion and complexity when creating digital prints and proofs.

[0053] Because the selection of a color as a best match and approval thereof is visual and dependent on observation, Applicant may establish digital proofing standards through the PantoneLIVE color representation for use in evaluating and approving matches in a digital proof to the PantoneLIVE standard. The correspondence will be at a desired visual tolerance for third parties, including the customer. Therefore, the customer accepts the digital proof as being a good match for the PantoneLIVE standard.

[0054] In the described system and method, a predefined database corresponding to PantoneLIVE™ metallic decorative article ink-dependent libraries is created. The database may be made available to interested third parties involved in the creation of branded materials, such as packaging printed with metallic decorative item inks, where such packaging includes aluminum cans. The system and method eliminates the need for third parties for a design project to create their own interpretations of PantoneLIVE™ metallic decorative item colors on an inkjet printer, as the information is shared among all third parties after transfer by uploading the color data information to a storage device. The system and method also provide distribution of target data derived from digital proofing for continuous quality control. Furthermore, the method and system allow for the calibration of remote digital fitting rooms so that third parties involved in verifying and validating a color selection are printing consistent with a uniform standard.

[0055] According to the described method, creating a digital test to verify the best match to a target color among the defined metallic decoration item color candidates, such as those colors present in the Metallic Decoration Article Dependent libraries 2P PantoneLIVE™, the time and effort to find the best color match for a target color will be relatively reduced for the current state of the art. Furthermore, creating a digital database will save time, effort and establish a defined digital inkjet standard in desired tolerances for pre-measured colors.

BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 is a workflow diagram of an exemplary embodiment of a method described in this document.

[0057] Figure 2 is a workflow diagram of another exemplary embodiment of a method described in this document.

[0058] Figure 3 shows an exemplary embodiment of a system described in this document.

[0059] Figure 4 shows target colors in a color sample.

[0060] Figure 5 is a screenshot of a computer monitor that displays a library of colors and colors in the library.

[0061] Figure 6 depicts visual comparison aspects of a method for selecting a best color match for a target color.

[0062] Figures 7A, 7B, 7C and 7D are screenshots of a computer monitor displaying printing and process requirements for a print queue generated by the software package.

[0063] Figure 8 is a screenshot of a computer monitor displaying a spot color correction file.

[0064] Figure 9 is a screenshot of a computer monitor displaying a “Manual Spot Color Input” window.

[0065] Figure 10 is a screenshot of a computer monitor that displays a “Manual Spot Color Input” window in which changes to color input are made.

[0066] Figure 11 is a screenshot of a computer monitor displaying the “Accurate Color Correction” window with the color “SC MD 100C” selected.

[0067] Figure 12 is a screenshot of a computer monitor displaying the “Manual Spot Color Input” window, which shows changes in device color relative to the original device color.

[0068] Figures 13A and 13B show screenshots of a computer monitor displaying the "Visual Exact Color Optimization" window opened for “SC MD 100C”, and color arrangements that were generated by the CGS ORIS Flex Pack software for SC MD 100C.

[0069] Figure 14 is a screenshot of a computer monitor that displays the “Exact Color Correction” window after selecting a color from the color array in Figure 13B.

[0070] Figure 15 is a screenshot of a computer monitor that displays the “Color iControl” window in “Measurement Pattern” mode.

[0071] Figure 16 is a screenshot of a computer monitor displaying the measured standard with the Lab references shown.

[0072] Figure 17 is a screenshot of a computer monitor displaying the measured test, which shows the differences established in the model compared to the measured standard.

[0073] Figures 18A, 18B and 18C depict the viewing angles at which color comparison and selection should be conducted.

DETAILED DESCRIPTION

[0074] With reference to Figure 1, an embodiment of the described method 100 will be described. In block 105, a color is selected as a first candidate color as a best possible match for a target color. The target color can be provided in a physical specimen, such as a color sample, as shown in Figure 4.

[0075] Specifying the target color allows the CGS software to perform a first prediction of inkjet separations for the Roland inkjet printer. Furthermore, since a Roland printer profile is provided as part of the information database (as previously explained in this document), the first prediction must be close to the target, and must be present in the first hive that is generated.

[0076] In one aspect, a third party may manually select a first candidate color from a digital metallic decor item color library, such as the PantoneLIVE™ dependent library. The selected color may be one listed in a spot color table that lists library colors. Such a library and color table are shown in Figure 5. In another aspect, the target color can be optically analyzed in order to capture this color data. For example, using a spherical spectrophotometer as the optical analyzer, spectral data for the target color is captured. A spherical spectrophotometer is best when measuring on a reflective surface. A multi-angle spectrophotometer can also be used. The data (D50/2 SPIN) is entered into a spot color table in the CGS software. The spot color table links to a standard device profile (i.e., the reference printer color space) and calculates an initial prediction of inkjet component separations on a Roland inkjet printer to generate a digital color simulation which is the subject of block 110. The standard device profile allows all printers, regardless of where they are situated (i.e., in different third-party locations), to align and perform in a virtually uniform manner. The soft proof employs D50/2 lighting as a standard. A suitable spherical spectrophotometer is the X-Rite Ci64. “/2” is the angle, so /2 SPIN is specular and is the measurement mode.

[0077] Once the color spectral data for a custom color or taken from PantoneLIVE is entered into the CGS ORIS software, the D50/2 LAB values are mapped into the device profile, and the software determines the color in space reference profile color that is required for inkjet separation/combining. This is the first prediction for how to get the color you want, regardless of whether it is a PantoneLIVE color or a custom color based on the Roland printer color space. For example, for a red the software determines the color quantities to obtain the red, for example, this determines the x quantity of Magenta plus y quantity of Yellow from the Roland printer (inkjet head separation/combination) to obtain the desired color. However, since this is a first prediction that is not always accurate, a honeycomb arrangement of colors is provided to increase potential match candidates.

[0078] In block 110, a color array is generated, which includes colors in addition to the first candidate color. An exemplary color generation is shown in Figures 13A and 13B, which shows screenshots of a computer monitor displaying color arrays that were generated by the CGS ORIS software. The color arrangement is a honeycomb arrangement. Figures 13A and 13B show the spot color name (“SC MD 100C”), LAB color coordinates, printer separations, and direction color. Figure 13A and 13B show the first candidate color in the center of honeycomb arrays. The six-pointed star on the left side of these Figures has six different colored dots and shows the direction color, corresponding to cyan, magenta, yellow, cyan, magenta, and yellow in Figure 13A and cyan, magenta, yellow, orange, orange, and yellow in Figure 13B (which reflects a user-made color change that will be reflected in printer separations). In each of these Figures, the dyeing step for each direction color is 5.0%. Note that the number of selected shells in Figure 13A is 4, which corresponds to the number of indentations that delineate the number of hive cells or fragments (for example, in the top part of the hive in Figure 14A, the shells are 1- 4, on the upper left side they are A-D, and so on. In Figure 13B, the number of shells is 8 (as selected by the user). 5% dye step in the opposite direction to the first central candidate cell. The color of the dye step corresponds to the point on the star corresponding to the opposite direction to the central cell. cyan (and the first candidate color); the cell next to 17 shows the presence of magenta (and the first candidate color) and the cell next to Q shows the presence of orange (and the first candidate color), and so on. The gradual change in color is visible following a certain color direction. Furthermore, the cells between direction colors show the presence of a mixture of direction colors, such as the mixture of cyan and magenta and the first candidate color in the cells between the center cell and the cells closest to 9 and 17.

[0079] Thus, the screenshots depicted in Figures 13A and 13B provide a visible representation of an array of candidate colors for a better match to the target color. The representation is virtual, that is, it is displayed on the screen of a computer monitor.

[0080] Again, since the software does not always accurately predict color separations, a color hive, which is also a hive of multiple inkjet separations, since each color has its own separations, is generated. A match must be verified in the first hive, saving time in printing a second iteration.

[0081] In block 115, the color array is printed using a digital proofer, such as a Roland inkjet printer. Printing is done on a transparent sheet. This allows for a visual comparison of the array's printed colors to the physical target color. This also allows a soft proof check to the myColorCloud soft proof standard stored and accessed in SunColorQC. This equips the user with the ability to validate the best soft proof match with a high degree of accuracy.

[0082] In block 120, a best match for the target color is selected. The best match selection can be made by overlaying the color array print onto a metal substrate, printed face down, as shown in Figure 6. The color honeycomb print is positioned directly onto the metal substrate (which is curved in this example to simulate the surface of a can).

[0083] In a preferential arrangement, the best match is selected as the following. The transparent print of the honeycomb array is positioned on the metal substrate as indicated above, and as shown in Figure 6. The colors of the honeycomb are viewed within a light box, the colors each evaluated at angles of 0°, 45 ° and 90° under D50 light source, as shown in Figures 18A, 18B and 18C. This form of assessment is believed to reduce the likelihood of metamerism, which can occur when comparing colors in variant conditions. Furthermore, it is believed that evaluating from three different angles best replicates how the finished product, such as a can, would be perceived by the brand owner or customer.

[0084] In another aspect of the preferred arrangement, four (4) colorists will each select the best match for the target color (shown in the present sample in Figure 6) following the procedure highlighted above. Colorists will visually compare the target color in the sample to the printed colors in the array as displayed on the metal substrate, to simulate a printed metal object (in this case, an aluminum can). Again, the comparison will occur at the three light angles stated above.

[0085] This approach provides ease of reproduction in the future and minimizes subjective interpretation when creating the digital proof pattern.

[0086] In block 125, it is decided whether the selected best match is a satisfactory best match for the target color.

[0087] In one aspect, a satisfactory best match is achieved when at least three of the four colorists agree on a best match.

[0088] If the match is not satisfactory, then the process returns to block 105 and the procedure is restarted, again proceeding through blocks 110, 115, 120 and 125. One of the colors shown in the other cells of the honeycomb array displayed in Figures 13A and 13B may be chosen as the first candidate for a best match, or a new exact color selected together.

[0089] If the colorists agree on a best match, the third parties may optionally further choose to return to block 105, to generate additional color iterations and refinements based on the best match, and again proceed to blocks 110, 115, 120 and 125.

[0090] When a satisfactory match is found, that is, a best match for a target color, the process proceeds to one or both blocks 130 and 140. In block 130, the cell or fragment representing the best match is saved using the “save” option available in the CGS ORIS Flex Pack software package. Other information can also be saved, such as printer separations, other color space information (e.g. CIELAB coordinates), printer settings, other digital proofer-related information, etc. Color information can be saved using naming conventions such as SUN 485D O2P or SUN 485D T 2P. The number is the Pantone reference, D means digital, O means opaque, T means transparent and 2P refers to the two-piece can printing process. The numerical reference changes with each color and more, some pantone colors are references, such as “Pantone Reflex Blue C”. In this case, the name would be SUN ReflexBlueD O 2P or SUN ReflexBlueD T 2P.

[0091] Storing the color data, as provided in this step, provides third parties with the means to reproduce the color at a remote location. For PantoneLIVE colors, this is the digital standard, therefore removing the need to engage in future interpretation.

[0092] In block 135, color data from block 130 is uploaded to the SUN digital proof database, stored in the CGS cloud, where it can be retrieved by third parties permitted to access this information. This is advantageous, as third parties would be expected to be remote from each other, yet with color data distributed in this way, everyone can perform assessments following the standardized procedure.

[0093] At least one of the remote third parties that retrieves this information will have an identical configuration in terms of software package, digital proofer and/or database access and will print a transparent digital proof and confirm its replications of the best match to the target color. The remote third party can also provide feedback on whether the initial best match result is reproducible. With this arrangement, updates and new Pantone colors or custom colors made available in the future can be added to the database and made accessible to third parties and customers.

[0094] In block 140, the best selected color match is measured in a color quality software package such as X-Rite Color iQC (measured when positioned on a metal surface) and named as previously indicated, i.e., SUN 485D The 2P or SUN 485D T 2P. Color measurements can be made with a NetProfiled spherical spectrophotometer in the color quality software package. This allows measurement of the inkjet proof and then storage as a target standard for quality control of future proofs. PantoneLIVE Metallic Furnishings library data cannot be used for quality control due to the fact that PantoneLIVE data pertains to measuring a color on a metallic decorating substrate with a Metallic Decorating Ink. This is not comparable for evidentiary purposes. In this case, the spectrophotometer reads the color differently when another technology is used, such as inkjet proofing in the present example. This measurement method in a color quality software package addresses this problem by providing a comparable standard to work with for quality control purposes.

[0095] In block 145, the SUN digital proofing MD 2P database, which is made available on myColorCloud and accessed through the SunColorQC software platform. This information may be accessed by interested third parties for ongoing color validation. The best match color target can be downloaded from myColorCloud into PantoneLIVE™ permitted quality control software and a comparison can be performed to the locally printed digital proof to ensure the resulting color is within acceptable tolerance.

[0096] Block procedure 145 can be implemented, for example, in final approval of the best target color match. It should be understood that a design may employ a variety of different colors, and thus the described process of selecting the best matches, reproducing and confirming them, and ongoing validation may be repeated one or more times for a given design. .

[0097] With this arrangement, updates and new Pantone colors or custom colors made available in the future can be added to the database and made accessible to third parties and customers.

[0098] Users can access the myColorCloud database with a PantoneLIVE™ license and relevant permissions linked to an X-Rite account, where a PantoneLIVE™ license is used to access permitted myColorCloud libraries. SunColorQC is X-Rite Color iQC software hosted on servers to access and measure against databases.

[0099] The exact color table is uploaded to a cloud database, such as those mentioned in this document, which are accessible through the CGS software by third parties granted access to use it. Third parties can then replicate the approved color at a remote location by following the “SunColorBox Metal Deco MD Digital Proofing - Proofing Process Guide, version 1.0” (the “user guide”). This guide is explained in this document and is also incorporated by reference in this document.

[0100] The PantoneLIVE™ dependent library created by Sun Chemical, and in conjunction with the inkjet proofing and quality control database, provides metallic decor printers with a complete solution for a high-quality workflow. digital color management. This is believed to be a unique solution.

[0101] Figure 2 depicts another block flowchart 200 of a process in accordance with the present disclosure that is complementary to and supplements the method depicted in block flowchart 100 of Figure 1. In block 205, the article-dependent opaque and transparent libraries PantoneLIVE™ cloud metallic decor images are downloaded from a cloud storage device.

[0102] In block 210, the libraries are imported into the CGS ORIS Flex Pack software. See Figure 5, which is discussed below. The libraries can then be used as indicated in block 215, creating by digital printing a digital proof hive that includes the first candidate color for better matching and additional candidate colors.

[0103] Block 215 essentially incorporates blocks 105, 110, 115, 120 and 125 of Figure 1. Descriptions of such blocks are incorporated by reference in this section.

[0104] When a satisfactory match is found, that is, a best match for a target color, the process proceeds to one or both blocks 220 and 230. In block 220, the cell or fragment representing the best match is saved using the “save” option available in the CGS ORIS Flex Pack software package. Other information can also be saved, such as printer separations, other color space information (e.g. CIELAB coordinates), printer settings, other digital proofer-related information, etc. Color information can be saved using the SUN 485D O 2P or SUN 485D T 2P naming conventions.

[0105] In block 225, color data from block 220 is uploaded to the SUN digital proof database, stored in the CGS cloud, where it can be retrieved by third parties permitted to access this information. This is advantageous, as third parties would be expected to be remote from each other, yet with color data distributed in this way, everyone can perform assessments following a standardized procedure.

[0106] At least one of the remote third parties that retrieves this information will have an identical configuration in terms of software package, digital proofer, and/or database access and will print a transparent digital proof of a color arrangement that includes the best match and will conduct the procedure set out above in order to confirm or disconfirm the selection of the best match for the target color. The remote third party can also provide feedback on whether the initial best match result is reproducible.

[0107] In block 230, the selected best color match is measured in a color quality software package such as X-Rite Color iQC (measured when positioned on a metal surface) and named as previously indicated, i.e., SUN 485D O2P or SUN 485D 2TP. Color measurements can be made with a NetProfiled spherical spectrophotometer in the color quality software package.

[0108] In block 235, the SUN digital proofing MD 2P database, which is made available on myColorCloud and accessed through the SunColorQC software platform. This information, when stored in the SunColorQC database, can be accessed by interested third parties for ongoing color validation. The best match color target can be downloaded into permitted PantoneLIVE™ quality control software and a comparison can be performed to the locally printed digital proof to ensure the resulting color is within acceptable tolerance.

[0109] Block procedure 235 can be implemented, for example, in final approval of the best target color match. It should be understood that a project may employ a variety of different colors, and therefore the described process of selecting the best matches, reproducing and confirming them, and continuous validation may be repeated more than once for a given project. . A specialized spot color table can be created.

[0110] The capabilities described herein, in which a digital proof can be created at two or more remote locations and still accurately reproduce colors so that consistent color evaluation and selection can be made across the remote locations require that digital proofing printers are configured uniformly. In other words, the settings must be consistent with each other. The settings can be found in the user guide, and also appear here. The following settings have been implemented for a Roland VS-300i inkjet printer that uses CGS XG inks. Such configurations can be deployed to the CGS ORIS Flex Pack software using the configuration wizard and include:

[0111] Standard selection for continuous tone (CT data tests);

[0112] The following measurement device settings:

[0113] On the Measurement Device screen select Eye One iO device (“Eye One” also called “i1”), which is a 0/45 X-Rite spectrophotometer. iO is a measurement chart used to calibrate an inkjet tester like the Roland printer. This allows reference to the central reference profile to ensure remote proofing accuracy.

[0114] Use XRGA standard;

[0115] Response state: State E (ISO 5-3);

[0116] Filter: None;

[0117] ISO13655 M0 measurement method;

[0118] Formula Delta E: DE2000;

[0119] Select “Yes” when asked whether a reference printer profile should be used;

[0120] Browse to the stored location of the required Reference Printer file (.rfp)*, select and click OK to proceed. Verify that the correct RFP created by CGS for Sun Chemical is available.

[0121] Decline the option to have an express calibration performed;

[0122] Paper source: Paper roll (60.96 cm (24 in)); paper size: Endless (Poster); width 420 mm, height 2000 mm;

[0123] Adjustment and size: original size and orientation; scale: factor; scaling factor x 100; maintain proportions; orientation: “R”;

[0124] Postscript/PDF Options: define size and page offset per Media Box in PostScript/PDF;

[0125] Check the boxes for “Maintain image spot color separations” and “use overprint commands”.

[0126] Select “new linearization” in the linearization calibration window;

[0127] Print the linearization test graph;

[0128] After printing the test graph, select the option to measure the test graph;

[0129] Place the Test Chart on the Eye-One iO measurement bed and select “Start measurement”. If the option to change the measurement mode is displayed, then the measurement must be performed with mode M0, as opposed to M1, M2, M3, etc. Follow the wizard to place the Eye-One iO “sight” over the required printed area and press the physical measurement button on the device. Measurement will begin as soon as the last positioning point is selected.

[0130] The color tablets displayed on the computer monitor change from transparent to solid once they are measured and a message will be displayed once the graph is measured successfully.

[0131] Select “Use” under RFP densities so that the target densities for the printer match the Reference Printer (RFP) target densities. Click next.

[0132] Two measurements are recommended to optimize linearization. Click “back” to perform an additional measurement to reprint and optimize. Click “next.” to continue.

[0133] Click next to start printing the Calibration Test Chart. If required, the white and metallic linearization gradation curves can be adjusted here using the Change White/Metallic Linearization buttons.

[0134] Place the printed chart on the Eye-One iO measurement bed and follow the positioning wizard as previously performed with the Linearization Chart. After the print is complete, the print must be allowed to dry for 10 minutes before measuring, again using the M0 measurement mode.

[0135] Repeat the process for additional chart pages and the color tablets will become solid in appearance after successful measurement. Click Next to proceed.

[0136] The measurements will be displayed, and there is now the option to improve the result by additional measurement. This will take the procedure back to printing the calibration test chart step for the purposes of printing an optimized chart. Continue optimization until measurement results are acceptable and then click next.

[0137] The next two windows provide the option to specify the color correction method. These options can be left as “None”. Click next to proceed.

[0138] The printer configuration and calibration process is now complete. Click next to finish the configuration wizard. The new queue will now be made available under the printer specified on the Main Screen visible in the software package.

[0139] Per the user guide, a new print queue must be added. In the software package toolbar select File > Duplicate Queue (Ctrl + S).

[0140] Name the new queue and click OK (in the example this is called “Printer 1 MD Transparent”. An opaque queue can also be chosen.

[0141] This will open “Settings for ‘Printer 1 Transparent MD’ Queue”.

[0142] queue. Figures 7A, 7B, 7C and 7D show examples of a configuration that can be used.

[0143] Although still in the “Settings for Queue ‘Printer 1 MD Transparent’” window, click on the “Exact Color Correction” tab and insert an exact color correction table by clicking “new”. This will open the “exact color correction” window. Click the second browse button, then navigate to the required ICC profile. For example “SunChemical_not_Wh03F080icc” can be chosen.

[0144] Click “save as” in the spot color correction window to create the file. Enter a new name and click “save”.

[0145] Spot colors can now be added to the file, for example, by clicking the “Import PantoneLIVE™” button. Then, a “PantoneLIVE™” library is selected, such as “Metallic Decorative Item Aluminum Transparent Gloss V” library, and click “import selected”. See Figure 5. These are the PantoneLIVE™” libraries of Metallic Decorative Item color standards (opaque or transparent) that are the targets that the CGS ORIS software uses to perform best match prediction. Color standards now appear in the “Exact Color Correction” file. See Figure 8. Click “save” to store the patterns added to the file. An “Exact Color Correction” file is where defined printer separations or printer separations that are refined to obtain a better match for a target color are stored.

[0146] In the spot color correction window, LAB data can be entered or the import spot color option can be used to import a .cxf file to measure the target color directly in the application.

[0147] In the spot color correction window, a spot color can be refined and selected as a first candidate color as a best match. As shown in Figure 8, a color standard, in this case the PantoneLIVE P100C LPAQ standard, is selected in the “Exact Color Correction” window. Clicking the “Change” button opens the “Manual Spot Color Entry” window in Figure 9. In this example, a new spot color is created, as any changes made to a PantoneLIVE™ color will be returned to the default if the color is re-added. or updated from the PantoneLIVE™ library. This will create the color arrangement, i.e. the hive. Colors can be saved under the SUN 100D O 2P or SUN 100D T 2P naming conventions.

[0148] In the Manual Spot Color Input window, as shown in Figure 10, changes to color output can be made, including the name and “Device Color”. Click OK to add the color to the spot color list. Here, changes have been made to the color, now called SC MD 100C, which is evident when comparing Figures 9 and 10. Figure 10 shows that the original device color values shown in Figure 9 have been changed. (e.g., C is now 0 in Figure 10, whereas this was 75.78 in the original device color in Figure 9, and so on for the values of M, Y, K, Or, and Gr. Wh and Mt remain, each, unchanged (Mt is silver or metallic). This occurs after a cell in the hive other than the central cell is selected. This will change one or more of the values of C, M, Y, K, Or and Gr.

[0149] By double-clicking the new color or refined color in the “Spot Color Correction” window (i.e. “SC MD 100C”), the manual Spot Color Entry window will reopen. See Figure 11.

[0150] A honeycomb arrangement of candidate colors that includes the first candidate color and additional candidate colors can be created by clicking the "visually optimize" window in the opened “Manual Exact Color Input” window, which is shown in Figure 12.

[0151] Figures 13A and 13B show the “Visual Exact Color Optimization” window opened for “SC MD 100C”. With this window open, changes can be made to increase the number of cells in screen view and printout. Furthermore, the directional color change to the color can be adjusted according to “Device Color”.

[0152] Figures 13A and 13B show the first candidate color in the center of honeycomb arrangements. The six-pointed star on the left side of these Figures has six different colored dots and shows the direction color, corresponding to cyan, magenta, yellow, cyan, magenta, and yellow in Figure 13A and cyan, magenta, yellow, orange, orange, and yellow in Figure 13B. In each of these Figures, the dyeing step for each direction color is 5.0%. Note that the number of selected shells in Figure 13A is 4, which corresponds to the number of indentations that delineate the number of hive cells or fragments (for example, in the top part of the hive in Figure 13A, the shells are numbered 1 -4, on the upper left side they are represented by the letters A-D, and so on). In Figure 13B, the number of shells is 8 (as selected by the user). Each hive cell represents a gradual change in color corresponding to a 5% dye step increment in the opposite direction to the first central candidate cell. The color of the dyeing step corresponds to the point on the star corresponding to the opposite direction to the central cell. For example, in Figure 13B, the cell next to 9 shows the presence of cyan (and the first candidate color); the cell next to 17 shows the presence of magenta (and the first candidate color), and the cell next to Q shows the presence of orange (and the first candidate color), and so on. The gradual change in color is visible following a certain color direction. Furthermore, the cells between direction colors show the presence of a mixture of direction colors, such as the mixture of cyan and magenta and the first candidate color in the cells between the center cell and the cells closest to 9 and 17.

[0153] Thus, the screenshots depicted in Figures 13A and 13B provide a visible representation of an array of candidate colors for a better match to the target color. The representation is virtual, that is, it is displayed on the screen of a computer monitor.

[0154] The hive is printed by the digital tester by clicking on “print”. Upon printing, this is no longer virtual, but instead a physical representation of colors that are candidates for a better match to a target color.

[0155] After printing the honeycomb (again, on a transparent substrate), visual evaluation to select a color that is a best match for the target color occurs. This assessment is described above and corresponds to blocks 125 (Figure 1) and 215 (Figure 2). Also refer to Figure 6, and the discussion thereof provided earlier in this disclosure. The visual evaluation is carried out by placing the digital proof printed with the honeycomb arrangement of colors on a metallic film or metallic substrate, such as a curved metallic substrate that simulates the surface of a can. Hive colors are compared to the target color in a color swatch. The comparison takes place in a light box that emits D50 light, at angles of 0°, 45° and 90° in order to determine a color that best matches the target color. As indicated, the evaluation is carried out by experienced colorists. Consensus is reached when at least 3 out of 4 evaluating colorists agree on a best match.

[0156] At this juncture, the third party may decide whether the best match is a satisfactory match to the target color, may decide that it is not a satisfactory match and decide to further refine the color, or may simply decide that although this is a satisfactory best match , further color refinement would be advisable (Block 125 of Figure 1). Further color refinement or satisfactory best match selection occurs by clicking a color cell as shown in Figures 13A and 13B (for example, a “best match” color cell) and clicking OK. This will change the Device Color setting again. Clicking on a cell other than the central cell would make that cell the center of the hive in the next iteration.

[0157] Record overall best match cell location to update spot color in CGS Oris Flex Pack software” by clicking on the selected cell.

[0158] The spot color can be updated by reopening the “manual spot color input” window, shown in Figure 10, and clicking the “visually optimize” button. This will open the “visual spot color optimization” window, shown in Figures 13A and 13B. What will actually open is the version that has the number of wrappers selected, which in this example is 8, which corresponds to Figure 13B.

[0159] Verify that the settings for the hive displayed in this window are the same as those originally used to print, including changes to color direction, percentage difference, and cell numbers. These settings will be displayed on the printed hive.

[0160] Locate the cell location of the best overall match found during the visual validation process and click on it. This will update the “Device Color” settings after clicking OK.

[0161] The Visual Spot Color Optimization window will close and display the Manual Spot Color Input window, which will now display the updated “Device Color” settings, as shown in Figure 14. Press OK to close the window. The updated Spot Color is displayed in the list in the Spot Color Correction window. Click Save to store the updated values for the spot color list (clicking OK without saving will not store the updated Device Color settings, which will return to their original values upon reopening of the Spot Color Correction window).

[0162] As previously indicated and as discussed with respect to Figures 1 and 2, new color patterns can be created once a best matching color has been decided in the procedures set out above, using the CGS Oris Flex Pack software and the Roland inkjet printer. Patterns are entered into Color iQC software with an optical measuring device. In one embodiment, the optical measuring device is a NetProfiled spherical device, i.e., the X-Rite Ci64 spherical spectrophotometer.

[0163] “NetProfiled” or “net-profiling” is the way of analyzing spectrophotometers to correspond to a standard profile, so that all such analyzed spectrophotometers have measurements that are the same or close to each other.

[0164] With open X-Rite Color iQC software, which is a quality control software package hosted on SunColorQC, a Sun chemical server, click on the icon and “New from model” located in the toolbar. This is the leftmost icon in the “Color iControl” window.

[0165] In the “create a job based on a predefined job template” window, select a desired template. For example, select “Exemplary Job.jt5”. Click on the “Open” button.

[0166] Click on the “Measure Pattern” icon on the toolbar in the “Color iControl” window. This will open the “measure pattern” window, as shown in Figure 15.

[0167] Click on the “Next” button and the request will be changed to “waiting on Trigger Reading 1”.

[0168] Measure patterns with the Spectrophotometer within 5 seconds, before the system “times out” (the spectrophotometer communicates with the computer via a USB port or via a Bluetooth connection). The measurements create a target standard for the digital proof that will be used for ongoing quality control, so that no additional measurement criteria are required beyond that for the NetProfiled spectrophotometer when measuring the digital proof sample placed on the metal surface.

[0169] The measured Standard will appear on the screen, which displays the Lab references. See Figure 16.

[0170] Click “close” to exit the “measure Standard” window.

[0171] Measurements in the data folder can be selected and exported as a .cxf file for upload to the myColorCloud database or saved to an iQC database.

[0172] All color standards imported from myColorCloud or an iQC database can be used for future proof checking by measuring tests against the standards for color differences. To do this, you must open the previously mentioned Color iControl window.

[0173] With the required work open and the standards loaded, performed by clicking on the binoculars icon and selecting the desired standards from a database, in this case the Sun Digital Proofing MD 2P database, click on the “Measurement Test” icon on the toolbar.

[0174] The “Measurement Test” window will open. Entering the sample name (e.g. Exemplary Blue 001-0001) in the dialog box, there is a prompt to click the “Next” button when ready for measurement.

[0175] Click on the “Next” button and the request will be changed to “waiting on Trigger Reading 1”.

[0176] In 5 seconds, measure the test with the attached Spectrophotometer, before the system “times out”.

[0177] The measured test will appear on the screen, which displays the differences established in the model compared to the Standard. See Figure 17. The test will also be shown as a measurement associated with the current standard, which is shown on the left side of the screen with the measured test color inverted below the selected standard.

[0178] Click “close” to exit the “measurement test” window. Click on e-job in the Color iControl taskbar, then save the measurements.

[0179] Also described herein is a system for creating a digital proof of a metallic decorative article paint of a specific color that represents a closest match to a target color. An exemplary system is depicted in Figure 3.

[0180] The system 300, according to an embodiment of the present disclosure, is shown with respect to an operational environment in which it can be used. System 300 includes a metallic decorative article digital color proof creation and validation system 302 that includes one or more processors 316 and memory 310 for storing software applications (such as the CGS ORIS Flex Pack software package), modules and other data. In one embodiment, the memory unit 310 includes a large number of memory blocks, for example, in which calculations, data generation, and data analysis can be performed. System 300 may also include one or more displays 312 for viewing content, such as the various computer monitor screenshots shown in this disclosure. The display 312 may allow a user to interact with the system and its components and their functions. This may be facilitated by the inclusion of a user interface 314, which may include a mouse, keyboard, lever, touch screen, or any other peripheral or control to enable user interaction with the system and/or its devices. It should be understood that system components and functions may be represented as one or more distinct systems or workstations, or they may be integrated as part of a larger system or workstation.

[0181] System 300 is depicted as a computer-implemented system for creating and validating digital color proofing of metallic decorative article, in accordance with an embodiment of the present principles, therefore, better color matches for target colors, such as exact colors from a customer.

[0182] System 300 receives input 304, which may be the selection of a first candidate color for a better match to a target color. For example, color selection may be accomplished by selecting it from a color database, shown as 310, such as a PantoneLIVE™ color database, a transparent color database, and/or opaque metallic decorative items. Such color selection is shown, for example, in Figure 11, previously discussed. The input may also be the input of color spectral data, such as that data collected during analysis with spectrophotometers. Such optical analysis devices (spectrophotometers, etc.) can interface directly with the system as a user interface, shown at 310. Other data 307 can be input into the system, such as digital proofer information, substrate information, etc. Such data can be entered into the system during the configuration of the software, the digital proofer and the reference printer.

[0183] The metallic decorative article color proof creation and validation system 302 includes color databases 318, color matching generator 320 and optionally, other databases 322. The color databases 318 are accessed and/or requested for candidates for best matches, in the ways indicated above. These include the PantoneLIVE™ color database for metallic home furnishing colors. The color matching generator 320 generates colors that differ incrementally from the first candidate color in one or more color directions, as shown, for example, in Figures 13A and 13B, and the corresponding description thereof provided in this disclosure. The color generator, in one aspect, generates incremental colors based on the first entered candidate color as shown in Figure 13B.

[0184] The system outputs data 326 as a visual representation of a first candidate color and additional candidate colors as described herein, and a printed digital proof of these colors in the color arrangement discussed herein. Furthermore, the best match selected for the target color is output 326 from the system, and when designated as a best match, it is entered 304 into the system with that designation, as described herein (e.g., by selecting the hive cell that corresponds to the best match color.

[0185] The system additionally includes accessible databases 328 for storing color data related to the best match and for ongoing validation of the selected best match. Information is generated and stored as indicated in the discussions pertaining to Figures 1 and 2, among others. The stored information includes, for example, best match color data and the data generated in Figures 15 to 17. Such accessible databases may be cloud storage databases. Exemplary databases include the SUN digital proofing MD 2P database and the MyColorCloud database, accessible through a QC software package such as X-Rite Color iQC hosted on the Sun Chemical (SunColorQC) platform. See Figures 1 and 2.

[0186] A digital color library can be created according to the following process, in which “spreads”, which are physical impressions of metallic decorative article inks on metallic substrates, are corresponding to, but not limited to, colors present in a Pantone color book (or personality colors). The colors present in the distributions are measured with a spectrophotometer (e.g., a spherical spectrophotometer) and the digital color data is uploaded to a digital metallic decor color database, such as Decor Dependent libraries PantoneLIVE Metallic (Metallic Decorative Aluminum Opaque Gloss V and Metallic Decorative Aluminum Clear Gloss V), which are present in the PantoneLIVE cloud accessible through the CGS FlexPack software package.

[0187] The process describes PantoneLIVE libraries, which when printing on an aluminum substrate with Metallic Decorative Item Ink are a better interpretation of the Pantone book. The SUN 2P soft proofing database in the CGS Cloud is the digital representation of such a PantoneLIVE standard realized through the CGS software using the Roland printer and then the SUN 2P soft proofing database in myColorCloud is for continuous validation to confirm the replication of such digital proof.

[0188] A suitable spectrophotometer is the Ci64 spherical spectrophotometer, which must be analyzed in a network. The light source and observer angle must be set in Color iQC to D50/2°. Before conducting measurements, the spectrophotometer and distributions are allowed to equilibrate to ambient temperature for two hours prior to measurement.

[0189] A 2P can holder (i.e., two pieces) is also used when measuring with the spectrophotometer. The can holder has an empty two-piece open top can be positioned over the can holder cylinder with the dispensing positioned over the can. The can holder includes a support to receive and support the spectrophotometer so that readings can be taken considering the circumference of the can on the round part and not on the flat part.

[0190] Distributions are prepared by printing metallic decorative article ink colors onto flexible metallic substrate material using an IGT prover, which is a proofing machine that applies metallic ink to aluminum under controlled conditions to simulate a printing press. metal decoration machine. The proofer prints on flexible aluminum, like an aluminum can cut and flattened before the proofing process, which provides a flattened surface to receive the ink. An overprint varnish is applied over the printed ink and the resulting material is cured at 210°C. After the waiting period described above, the printed metallic decorative item color is viewed inside a light box that emits D50 and TL84 light, at angles of 0°, 45° and 90°.

[0191] In one aspect, the spread contains a plurality of parallel printed color strips, such as three parallel strips (with overprint varnish (OPV) applied over the color strips). Printed strips may differ in ink weight applied, for example, one strip may be the lowest ink weight in the set (representing a lighter print), another strip may be the heaviest ink weight in the set (representing a lighter print). darker) and another may be an intermediate paint weight between the two.

[0192] The metallic decorative item color paint present in the distributions are then compared to the colors in the Pantone book, visualized in the light box and corresponding to a color that is selected. In this way, a metallic decorative item color paint can be matched and used to define the corresponding digital proof pattern present in a database. For example, for a PantoneLIVE color the SUN 2P soft proof database would be used, for example PantoneLIVE P485C LPAV or P485C LPAQ Correlation with SUN 485D T 2P or SUN 485D O 2P.

[0193] A specific area of the printed color in the distribution is selected for optical analysis with the spectrophotometer. This can be accomplished by identifying the selected area by placing a template over the distribution and measuring a target measurement area defined by the template (e.g., in an area defined by an opening in the template, which area will be marked by the assessor for future reference and evaluation purposes).

[0194] Measuring the spectral data with the spherical spectrophotometer allows entries to be created by three databases, which correspond to the brightest, standard (i.e., intermediate), and darkest versions of the distributions, which represent the different film weights, 0.15 cm3 (light); 0.20 cm3 (standard); and 0.25 cm3 (dark). This was performed with all colors matched and loaded into an iQC database (naming protocol for this database is low). The color data and other identifying information will then be uploaded to the PantoneLIVE digital library, although commonly this is just the standard film weight data that is placed in that library.

[0195] When using the can holder with the spectrophotometer, the spectrophotometer must be positioned in order to minimize or eliminate the gap between the can holder and the spectrophotometer measuring base. This can be accomplished by pressing the spectrophotometer into its holder so that the gap disappears.

[0196] The naming protocol for the iQC database is as follows. This is an intermediate naming convention as this data is sent to x-rite to create the PantoneLIVE library standards. This way, measurements are checked, weighted and validated, and then uploaded with the correct PantoneLIVE naming convention, for example, P524C LPAV or P524C LPAQ: MD is for Metal Decorative Item measurements; AL is the substrate, (aluminum); O or T is the version used Opaque or Transparent; L/S/D is the Light / Standard / Dark film weight, 0.15 cm3 / 0.2 cm3 / 0.25 cm3 1 / 2 / 3 is the reading angle 0° / 45° / 90°. Therefore, P524C MDAL O L 2 would be PMS 524 C for Metal Decorative Article in Opaque Aluminum measured at 0.15 cm3 (Light) at 45 degrees.

[0197] The present invention has been described in detail, including preferred embodiments thereof. However, it will be appreciated that those skilled in the art, upon consideration of the present disclosure, may make modifications and/or improvements to this invention that are within the scope and spirit of the invention.

Claims (19)

1. Method for identifying a best match to a target color of metallic decorative article and distributing the best match to interested parties characterized by the fact that it comprises the steps of: A) i) establishing white and metallic linearization gradation curves for use in a computer-deployed environment; ii) selecting a first candidate color as a match to a target metallic decorative item color from a database of metallic decorative article paint colors; B) generating in a computer-implemented environment an array of colors comprising the first candidate color and one or more additional candidate colors that differ from each other in color increments; C) print the arrangement of colors on a transparent sheet to create a digital proof of the plurality of colors; D) placing the digital proof on a metallic substrate to provide a simulation of the application of colored paints from a metallic decorative article to the metallic substrate; and E) select a color from the color arrangement in the digital proof as a best match for the target color of the metallic decorative item; and F) storing color data of the best match for the target color of metallic decorative article, wherein the color data comprises CIELAB color space information, in a computer storage location for retrieval by other parties. 2. Method according to claim 1, characterized by the fact that the color data for best matching to the target color of metallic decorative article additionally comprises one or more printer separations, digital proofer related information and digital fitting room settings. 3. Method according to claim 1, characterized by the fact that an impression of the color that is the best match for the target color of metallic decorative article is measured by an optical device such as a spectrophotometer in order to provide data used to assess that it is within a desired tolerance, the output of the digital tester precisely reproduces the previously defined digital representation of the desired color, and to provide validation data to validate the printed color against the previously defined digital representation of the desired color. 4. Method according to claim 1, characterized by the fact that the target color and the best match for the target color of metallic decorative article are spot colors. 5. The method of claim 4, wherein the spot colors are custom spot colors. 6. The method of claim 1, wherein the target color is provided by a target color representation, such as a color sample that is the target color printed on a substrate. 7. Method according to claim 1, characterized by the fact that step A selection of a first candidate color is carried out by selecting a color from a metallic decorative article color database. 8. Method according to claim 1, characterized by the fact that step A selection of a first candidate color is carried out by optically analyzing a physical specimen that includes the target color of metallic decorative article with a spectrophotometer to obtain color data such as printer separations for the target color representation and then assign the same data in the computer-deployed environment from step B. 9. Method according to claim 1, characterized by the fact that the first candidate color and one or more additional candidate colors that differ gradually from each other in one or more of the CIELAB color space and in printer separations. 10. Method according to claim 1, characterized by the fact that the saved color data of the best match for the target color of metallic decorative article comprises printer separations. 11. Method according to claim 1, characterized by the fact that the first candidate color and one or more additional candidate colors are visually arranged in an array comprised of cells corresponding to the first candidate color and one or more additional candidate colors, as a honeycomb arrangement comprised of cells corresponding to the first candidate color and one or more additional candidate colors. 12. The method of claim 1, wherein the best match for the metallic decorative article target color selected in step E is saved to computer storage by selecting and saving a cell corresponding to the same as is present in a computer-generated visual representation of the color arrangement, such as a honeycomb arrangement of colors. 13. The method of claim 1, wherein printer separations of the best match for the metallic decor article target color selected in step E are saved to computer storage. 14. Method according to claim 1, characterized by the fact that the metallic substrate of step D has a curved surface. 15. Method according to claim 1, characterized by the fact that selecting the best match in step E comprises: evaluating the digital proof comprising the first candidate color and one or more additional candidate colors as the proof is positioned on the metallic substrate into a light box and inspect each color at angles of 0°, 45° and 90° under D50 light source, and then select the best match for the target color of metallic decorative article. 16. Method according to claim 1, characterized by the fact that the color that selects a best match for the target color of metallic decorative article in step E is then selected as the first candidate color in step A and , then steps B to F, and optionally steps F1 and/or F2, are performed again, where: step F1 is a step in which the color data for the best match to the article target color of metallic decoration, together with other pertinent information selected from printer separations, color space information from CIELAB, digital proofer related information such as tester model and digital proofer settings are saved to computer storage where the same may be distributed to, retrieved by, one or more parties with access to the storage device, and step F2 is a step in which the printed color that is the best match to the target color of metallic decorative article is measured by a optical device in order to determine whether the output of the digital taster accurately reproduces the previously defined digital representation of the desired color and to provide validation data to validate the printed color against the previously defined digital representation of the desired color. 17. System for creating a digital proof of a metallic decorative article paint of a specific color characterized by the fact that it represents a closest match to a target color; one or more inputs through which a first candidate color for a target color match is received by the system; a target color matching generator that generates a plurality of colors comprising the first candidate color and one or more additional candidate colors that differ from each other in color increments; a digital proofer for printing the plurality of colors on a transparent sheet to create a digital proof comprising the plurality of colors printed on the sheet; an input for selecting a color from the array of additional candidate colors printed on the digital proof as a second candidate color and a spectrophotometer, preferably a spherical spectrophotometer. 18. Method of selecting and validating a color standard as a best matching color characterized by the fact that it comprises: A) accessing a database comprising Pantone reference colors; B) correlate a Pantone reference color present in an accessible design format present in the database to a digital proof color target; C) printing the digital proof color target on a transparent sheet to provide a digital proof; D) placing the digital proof on a metallic substrate to provide a simulation of the application of colored paint from a metallic decorative article to a metallic substrate; and E) measuring the digital proof while placed on the metal substrate with a spherical spectrophotometer and comparing generated spectrophotometer data to the corresponding data for the digital proof color target present in an additional database in order to validate the digital proof as a digital proof color target reproduction. 19. Method according to claim 18, characterized by the fact that the database is hosted in a cloud computing environment.