EP1216434A1 - Systeme et procede d'adaptation de la peinture - Google Patents

Systeme et procede d'adaptation de la peinture

Info

Publication number
EP1216434A1
EP1216434A1 EP00968459A EP00968459A EP1216434A1 EP 1216434 A1 EP1216434 A1 EP 1216434A1 EP 00968459 A EP00968459 A EP 00968459A EP 00968459 A EP00968459 A EP 00968459A EP 1216434 A1 EP1216434 A1 EP 1216434A1
Authority
EP
European Patent Office
Prior art keywords
color
light
pigments
film
camera
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP00968459A
Other languages
German (de)
English (en)
Inventor
Robert Lowery
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1216434A1 publication Critical patent/EP1216434A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/005—Repairing damaged coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44D—PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES
    • B44D2/00—Special techniques in artistic painting or drawing, e.g. oil painting, water painting, pastel painting, relief painting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44D—PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES
    • B44D3/00—Accessories or implements for use in connection with painting or artistic drawing, not otherwise provided for; Methods or devices for colour determination, selection, or synthesis, e.g. use of colour tables
    • B44D3/003—Methods or devices for colour determination, selection or synthesis, e.g. use of colour tables
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
    • G01J3/0251—Colorimeters making use of an integrating sphere
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/463—Colour matching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0272—Handheld
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C8/00—Diffusion transfer processes or agents therefor; Photosensitive materials for such processes

Definitions

  • the present invention relates generally to paints and painting and more specifically to formulating paint to match the existing color of a vehicle for repair, refinishing, and touch-up painting.
  • Automotive paints used in repair, refmishing, and touch-up must be formulated to match the existing color of a vehicle in order to provide high quality results.
  • Current systems and methods of matching paint colors can be complex, expensive to maintain, and somewhat inaccurate.
  • traditional paint matching techniques require the storage and maintenance of dozens or even hundreds of containers of expensive tints, which are tediously mixed with neutral base coat solutions to create paint of a desired color.
  • the formulating and matching process itself is exceedingly complex and involves the use of agitator mixing racks and lids, digital scales, microviewers and color formula microfiche, portable color analyzers, computer hardware and color retrieval software, paint code color books and other manuals and accessories.
  • the present invention in a preferred embodiment thereof, comprises a unique and substantially improved system and method of matching touch-up paint color to the existing color of a vehicle.
  • the system includes a photo-reactive film, which may take the form of commercial photographic film having photo-activated pigments in a photographic emulsion, and a neutral base coat solution.
  • the photo-reactive film is carried on one side of an opaque card-like substrate covered and protected from exposure to light by a removable backing. In use of such a card, the card is placed on a clean painted surface of a vehicle with the photo- reactive film facing the painted surface. The backing is then removed to expose the film to the painted surface.
  • the film develops to an exact likeness of the color of the surface, in essence making a photograph of the surface color. More specifically, the photo-activated pigments within the film's emulsion are activated in the proper proportions to reproduce the color of the surface.
  • the film which now contains the activated color pigments, is placed in an appropriate amount of solvent, which dissolves and isolates the pigments from the film substrate.
  • the concentrated pigments are mixed with a neutral base paint solution.
  • the pigments dissolve in the base paint solution and cause the solution to take on the exact color of the host vehicle.
  • the resulting paint can be sprayed on the vehicle to affect repair, refmishing, or touch-up in the usual way.
  • a photo-reactive film may be loaded in a standard or specialized camera, which is then used to
  • a light-tight box is placed over a cleaned area of the surface and internal lighting within the box illuminates the covered surface.
  • the camera is attached to an adapter on the box and is activated to open its shudder and expose the film to the color of the surface.
  • the photo- reactive film thus is exposed to the surface color to activate the pigments therein.
  • the pigments within the exposed and developed film may then be isolated and concentrated, whereupon they are added to the neutral base paint, tinting it to match the color of the vehicle.
  • the color of the resulting touch-up paint in the present invention is determined by the existing color of the vehicle rather than starting with an approximate color and making fine adjustments, an exact match is obtained every time. Further, the need to maintain large quantities of tints is eliminated as is the requirement for color manuals, computers, microfiche readers, scales, and other complex and equipment. Accordingly, the method and system of this invention addresses and solves the problems of prior art color matching schemes while at the same time providing superior results through a simple to implement process that can be performed virtually by anyone.
  • Fig. 1 is a perspective view of the photo-reactive thin film card that embodies principles of the invention in a preferred form.
  • Fig. 2 illustrates placement of the photo-reactive thin film card of Fig. 1 on the surface of a vehicle whose paint color is to be matched according to one embodiment of the invention.
  • Fig. 3 illustrates placement of the exposed thin film card into a neutral base solution to dissolve activated pigments in the film that tint the solution to match the color of the vehicle.
  • Fig. 4 illustrates an alternate embodiment of an apparatus for exposing a photo- reactive thin film to the existing color of a vehicle according to the invention.
  • a photo-reactive thin film is deposited on a card.
  • the card is placed on a surface and a peel-away protective backing is removed to expose the film to the surface color.
  • the photo-reactive film comprises a photographic emulsion on standard photographic film exposed within a standard camera.
  • the camera is used in conjunction with a light-tight box to expose the film to the surface color.
  • a photo-reactive film is exposed to the vehicle color to activate pigments in the film that reproduce the original color. The pigments are then used to tint a neutral base paint solution.
  • Fig. 1 illustrates a photo-reactive film card that embodies principles of the invention in one form. It should be understood that the card can take on configurations other that that shown in Fig. 1, although Fig. 1 represents a best mode known to the inventor of carrying out the invention.
  • the photo-reactive thin film card 11 comprises a substantially rigid card-like substrate 12 upon which is deposited a layer of a photo-reactive film 13.
  • the substrate 12 may be formed of any material suitable for carrying the film such as, for example, celluloid, aluminum, glass, or plastic and is opaque to prevent the film from being exposed to light through the substrate.
  • the substrate may be coated on its back side (visible in Fig. 2) with a suitable opaque coating.
  • the photo-reactive film 13 is deposited on the substrate in the central portion thereof leaving an adhesive boarder 14 around the edge of the substrate.
  • a removable peel-away protective backing 16 which also is opaque or coated with an opaque coating, has a size that corresponds to the size of the substrate 12 and is provided with an adhesive boarder 17. Normally, the removable protective backing 16 is positioned to cover the film 13 with the adhesive boarder 17 of the backing adhered to the adhesive boarder 14 of the substrate. In this way, the film 13 is sealed and protected from exposure to light until such time as it is to be exposed to the surface color of a vehicle as described below.
  • the photo-reactive film contains photographic pigments that are activated when exposed to light. As is known in the photography arts, the pigments are activated in proportion to the color of the impinging light to reproduce the color on the film.
  • the photo-reactive film of the present embodiment and of the invention in general may be a standard commercially available photographic emulsion film such as that used in "instant photography" films.
  • Fig. 2 illustrates exposure of the photo-reactive film on the card 11 to the surface of a vehicle whose paint color is to be matched. More specifically, the card is placed on the surface of the vehicle with the film layer 13 facing the surface of the vehicle. The protective backing 16 is then carefully peeled away to expose the film to the surface of the vehicle and to the color of the paint thereon. The card is left on or adjacent to the vehicle surface for a predetermined length of time sufficient to expose the photo-reactive film fully to the color of the vehicle. During this time, the film in essence takes a photograph of the color of the vehicle by absorbing light reflected from the vehicle surface and the pigments in the film are activated in the proper proportions to produce a color that precisely matches the color on the vehicle.
  • the photo-reactive film may be any suitable photo-reactive compound having pigments that reacts to light in accordance with the color of the light to which it is exposed.
  • compounds typically used in conventional color photographic film such as 4-N-Ethyl-N-2 Methanesulfonylaminoethyl-2-Methylphenylenediamine may be used.
  • standard commercial photographic film is suitable for use in the present invention.
  • Dilutants and fillers such as potassium carbonate, benzyl alcohol, and ethylene glycol may be used to fix the photo-reactive compound to the substrate.
  • the photo-reactive film of the card 11 when the photo-reactive film of the card 11 has been exposed fully to and taken on the color of the host vehicle, it is placed in a container 21 containing a neutral base solution 22.
  • the neutral base solution contains all of the components of automotive base coat paint except the pigment.
  • the neutral base solution contains special solvents, activators, and chemical components that render the base solution receptive to the pigments in the exposed film.
  • the pigments within the film are leached from the backing and dissolved in the solution.
  • the base solution is tinted by the pigments and ultimately takes on the exact color of the pigments and thus of the vehicle to which the film was previously exposed.
  • photo- activated pigments in the film are developed or activated to various degrees through a process similar to that used to render an image on instant photographic films. Those pigments that are not a component of the desired color are not activated.
  • the additives in the solution draw the activated pigments out of the film and into the solution, thereby transferring the color of the pre- existing finish on the vehicle into the solution.
  • the solution thus becomes tinted to match the color of the vehicle precisely and can be used to paint repaired portions of the vehicle or to touch-up scratches and dings without having to paint an entire section of the vehicle.
  • FIG. 4 illustrates a device that embodies an alternative technique for exposing a photo-reactive film to the color of a vehicle's paint to activate the appropriate pigments in the film.
  • a standard camera is used to house and expose the film to the surface color rather than the card of Fig. 1.
  • a light box 32 which is generally rectangular in the illustrated embodiment, has side walls 36 and a top wall 37 that are opaque.
  • the top wall 37 is provided with an opening surrounded by a camera adapter 33 configured to receive a camera 34.
  • the camera 34 may be any appropriate type of camera that can be loaded with film that carries a photo-reactive emulsion according to the present invention.
  • the camera may be of the "instant photography" type and may be loaded with commercial instant photography film carrying a standard or specialized emulsion with photo-activated pigments.
  • the photo- reactive emulsion may be carried on standard roll film that is loaded into a roll film camera such as a 35 -mm camera.
  • the camera 34 is loaded with photo- reactive film according to the invention and may be activated to open its shudder to expose of the film for a predetermined length of time.
  • the camera adapter 33 forms a light-tight connection between the camera 34 and the light box 32 such that the camera is pointed through the opening in the top 37 of the light box and at the surface 31 below.
  • the bottom edges of the side walls 36 of the light box are provided with a seal 38, which, when in contact with a donor surface 31, forms a light-tight seal between the donor surface and the light box.
  • the seal 38 may be formed from a variety of materials including a rubberized or foam gasket material. Alternatively, a fabric or rubber skirt may be employed, especially for use in areas of the donor surface that may be characterized by curved contours.
  • An array of small wattage light bulbs 39 are disposed within the light box 32, preferably around the periphery thereof as illustrated in the sectioned portion of the light box in Fig. 4.
  • the light bulbs 39 are coupled to a source of electrical power such as a battery (not shown) by appropriate electrical wiring 41. When activated, the light bulbs provide a known amount of illumination on the area of the donor surface within the light box.
  • the illumination is provided from all directions because of the perimeter array of light bulbs, small shadows that may otherwise be formed by a directional light source are eliminated.
  • the result is a uniformly illuminated area of the donor surface within the frame of the camera 34 that is lit with a known intensity and color of light.
  • the lighting conditions within the box are carefully controlled and shadows are eliminated.
  • instant photography films When using an instant photography camera to practice the invention, commercially available instant photography films may be used.
  • the technology underlying instant photography film, its exposure and development, is discussed in some detail in U. S. Patent No. 2,543,181 of Edward Herbert Land and will not be described in great detail here.
  • exposure of the film to a focused image of the scene activates pigments in the film emulsion according to the colors, intensities, and patterns of light impinging on the film. Once developed, the pigments mimic the colors and other aspects of the image to produce a photograph.
  • This same general principal applies in the present invention, except that the image focused onto the film is not a scene but rather an entire field of only one color, the color of the donor surface.
  • an instant photograph is made of the color of the donor surface.
  • an area of the donor surface to be matched is thoroughly cleaned and the light box and camera are placed over the cleaned area.
  • the lighting array is activated to illuminate the donor surface
  • the shudder speed of the camera is set if necessary
  • the camera activated to open its shutters and expose the film within.
  • One frame or more than one frame of film may be exposed as needed depending upon the total volume of touch-up paint that is to be produced.
  • the donor surface photographs are allowed to develop as directed by the film manufacturer. In the case of instant film, development occurs on the spot. If non-instant films are used, an independent development step may be required, and this is one reason that instant films are preferred.
  • the pigments of the film are activated in the appropriate proportions to produce an entire frame that matches the color of the donor surface.
  • the film is then immersed in a shallow bath, preferably face up, of an appropriate solvent suitable for dissolving these pigments, which are contained in a film emulsion.
  • the solvent bath should be of a size and depth to cover the surface of the exposed film with a minimum volume of solvent.
  • a clean soft bristle paintbrush or similar utensil may be used to insure that all of the pigments are leached from the film substrate and dissolved in the solvent.
  • Solvents suitable for dissolving the pigmented emulsion on the film include, without limitation, acetone, Methyl Ethyl Keytone (MEK), toluene, xylene, or lacquer thinner depending upon the chemical composition of the emulsion.
  • MEK Methyl Ethyl Keytone
  • the resulting solution is concentrated by an appropriate means such as straining, evaporation, or otherwise to obtain a small amount of concentrated pigments. For making a standard volume of 200 ml of matched touch-up paint, about 50 ml of concentrated pigments is required.
  • a neutral base coat preparation comprising an appropriate epoxy, urethane, or clear lacquer without added pigments is prepared as discussed above.
  • the base coat must be of such formulation as not to impart any incident coloration if applied directly.
  • the base coat also should contain UN inhibiting compounds insofar as they do not impart coloration to the base coat.
  • the base coat must be compatible with the dissolved pigments obtained above.
  • a preferred ratio of pigments to base coat is about 1 part pigments to about 3 parts neutral base coat.
  • the resulting touch-up paint may be stored until needed.
  • the touch-up paint may be applied by any appropriate process, such as spraying, as is known by those of skill in the art.
  • the card and removable backing that carry and protect the photo-reactive film in the embodiment of Fig. 1 may take on a variety of shapes or configurations.
  • the peel-away protective backing might be replace altogether with, for example, a movable or slidable shutter that can be drawn aside to expose the film to the color of a vehicle's paint.
  • the method of the invention generally comprises the steps of exposing a photo-reactive film to a color to be matched and then placing the exposed film in a neutral base solution adapted to draw appropriate pigments out of the film to tint the base solution to match the color of the vehicle.
  • a neutral base solution adapted to draw appropriate pigments out of the film to tint the base solution to match the color of the vehicle.
  • the process may well be varied by those of skill in the art.
  • the photo-reactive film may need to be developed after exposure.
  • the process would include steps related to the requisite development of the film prior to isolating the pigments and mixing them in a neutral base solution.

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

La présente invention concerne un procédé destiné à adapter la couleur d'une peinture à la couleur existante d'un véhicule, consistant à exposer une feuille photoréactive à la surface du véhicule afin d'activer les pigments de couleur dans l'émulsion, à extraire les pigments de la feuille, par exemple en plaçant l'émulsion dans un solvant, et à mélanger les pigments avec une solution de base neutre afin de teinter la solution dans la couleur du véhicule. Un dispositif associé comporte une caméra avec un adaptateur destiné à monter une boîte imperméable à la lumière sur la caméra, ladite boîte présentant un côté ouvert pour la disposition sur la surface du véhicule, et des moyens d'éclairage autour de sa périphérie intérieur.
EP00968459A 1999-09-28 2000-09-28 Systeme et procede d'adaptation de la peinture Withdrawn EP1216434A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US15635599P 1999-09-28 1999-09-28
US156355P 1999-09-28
PCT/US2000/026668 WO2001023958A1 (fr) 1999-09-28 2000-09-28 Systeme et procede d'adaptation de la peinture

Publications (1)

Publication Number Publication Date
EP1216434A1 true EP1216434A1 (fr) 2002-06-26

Family

ID=22559224

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00968459A Withdrawn EP1216434A1 (fr) 1999-09-28 2000-09-28 Systeme et procede d'adaptation de la peinture

Country Status (2)

Country Link
EP (1) EP1216434A1 (fr)
WO (1) WO2001023958A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2525701C2 (de) * 1975-06-10 1985-06-13 Herberts Gmbh, 5600 Wuppertal Vorrichtung zum spektrophotometrischen Messen der Farbe flüssiger Anstrichmittel
US4692481A (en) * 1984-09-27 1987-09-08 E. I. Du Pont De Nemours And Company Process for matching color of paint to a colored surface
WO1993013160A1 (fr) * 1991-12-27 1993-07-08 Positive Response Marketing, Inc. Polish pouvant etre teinte pour automobiles
US5212053A (en) * 1992-02-07 1993-05-18 Eastman Kodak Company Translucent display paper for rear illumination
JP3844311B2 (ja) * 1996-03-14 2006-11-08 関西ペイント株式会社 塗料の色合わせ方法および装置
JPH1164970A (ja) * 1997-08-22 1999-03-05 Gokou Internatl Corp:Kk 高倍率撮影専用カメラ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0123958A1 *

Also Published As

Publication number Publication date
WO2001023958A1 (fr) 2001-04-05
WO2001023958A9 (fr) 2002-12-12

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