Classifications

• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
  • G09B19/00—Teaching not covered by other main groups of this subclass
  • G09B19/0023—Colour matching, recognition, analysis, mixture or the like
• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
  • G09F5/00—Means for displaying samples
  • G09F5/04—Cards of samples; Books of samples

Definitions

• the present invention relates to a system for selecting one or more colour shades, comprising a plurality of colour display cards, each with mixed shades of at least two colours, and comprising means for selecting one mixed shade among the mixed shades of the individual colour display card, means for presenting the selected mixed shade and means for specifying the selected mixed shade, for example for preparing paint, wherein the selection means are comprised of an opaque screen, said screen being movable across the colour display card, and wherein the means for presenting the selected mixed shade are comprised of an opening in the opaque screen, a portion of said colour display card being visible through the opening.
• fluorescent lamps or halogen lamps can change colour perception, and light sources, such as high-pressure discharge lamps emitting light in a very narrow frequency band, can distort a colour considerably under certain circumstances, so that a red colour may, for example, ap- pear grey. Other circumstances also play a role. It is, for example, of great importance, whether the subject colour shade is presented together with another colour shade, as these colour shades may influence each other and may serve to convey a collective colour impression. This may be desirable or undesirable. Another important factor is surface finish, since a glossy and a matt surface convey colour impressions of considerable difference. Paint of a specific colour applied to e. g. a brick wall usually conveys a different impression than the same painted applied to e. g. a gypsum plate.
• Colour selection can never be objective, and is often based on personal taste etc. Therefore, it is important to have several tools to be used for selecting a colour shade.
• GB 2283104 A describes a colour selection system, wherein a plurality of display cards is kept together by means of a rod in a stack to be leafed through.
• the individual display cards are provided with different colour shades to enable the selection of particular colour shades, the colour shades of adjacent cards having mutual associations.
• FR 25409921-A1 describes a system for comparing skin tones with a given scale.
• the scale provided in a longitudinal device comprises fields of standardized colour tones, and a sliding device being displaceably arranged along the fields.
• the sliding device is provided with two openings, one opening showing a colour tone on the colour scale and the other opening showing the field of skin the colour of which is to be assessed.
• US 6632093 Bl discloses a system with colour display cards showing combinations of colours both with respect to mixing proportions and colour intensity.
• the system comprises a number of cards with fields showing this colour combinations.
• FR 2 684 219 discloses a colour card system with a manually operated slider for se- lecting the desired colour.
• the colour selection can only be discontinuous.
• the object of the present invention is to provide a system for selecting colour shades which is considerably easier than previously known.
• a system of the aforementioned type is characterized in that the mixed shades of an individual colour display card vary continuously and that the means for specifying the selected mixed shade are provided to specify a coordinate or a coordinate point on a continuously variable colour display card.
• the opaque screen has a neutral colour, such as black or a grey tone.
• a neutral colour such as black or a grey tone.
• the subject colour display card can advantageously be matt, since said display card can be covered with a glossy transparent film, if necessary, to achieve glossiness.
• a colour display card, selection means, presentation means and means for specifying the desired mixed shade by means of a preprogrammed computer with associated monitor As mentioned above, there may be provided a vast number of colour shades by mixing only two colours. If it also has to be taken into account that other colours may be admixed, this will result in an even vaster number of possible mixed shades. If all of these mixed shades were to be displayed on a colour display card of, for example, cardboard or plastic, this would require a very large card index system. Letting a computer software control the presented colour and mixed shades makes operating the equipment simple and easy.
• the selected colour must be displayed on a colour display card, as colour reproduction on a monitor is usually poor.
• the computer is connected to an installation for mixing paint, said installation being able to mix the paint to achieve the desired mixed shade based on data from the computer.
• an installation for mixing paint said installation being able to mix the paint to achieve the desired mixed shade based on data from the computer.
• the present invention also relates to a colour display card for use in connection with a colour selection system according to the present invention, comprising a rectangular field with a horizontal axis and a vertical axis, the coordinates on said vertical axis specifying the mixed shade, preferably continuously, of a first colour and a second colour, and the coordinates on said horizontal axis specifying the mixed shade, preferably continuously, of the vertical axis admixed with black on the right-hand side and white on the left-hand side.
• the colour circle forms the background for creating colour shades, however it usually only produces shades of adjacent col- ours on the colour circle, for example yellow/green. Many other mixtures are equally possible and desirable, but cannot necessarily be found thereby. Using mixed shades between random shades it is possible to obtain a considerably greater degree of freedom when selecting shades.
• both the first and the second colour are obtained by means of pigments, preferably four different pigments, the pigment colours being, for example, yellow ochre, red ochre, Prussian blue and chrome green.
• pigments preferably four different pigments
• N(N- 1) 1/2 colour display cards N(N- 1) 1/2 colour display cards.
• Fig. 1 shows a colour display card for mixed shades of two colours as well as admixed with black/white for a system according to the present invention for selecting a colour shade
• Fig. 2a shows an opaque screen for selecting a colour shade on a colour display card
• Fig. 2b shows a different embodiment of an opaque screen
• Fig. 3 shows a computer-controlled system for selecting a colour shade. Best Modes for Carrying out the Invention
• Fig. 1 shows a colour display card for mixed shades of two colours.
• the colour display card herein is shown in black and white, and therefore it is not possible to re- produce colour shades.
• the vertical axis of the illustrated colour display card shows the mixed shades of Prussian blue 2 and ochre 3, and the vertical axis shows a gradual transition between these two colours, said colours being provided by means of colour pigments, and the gradual transition between the colours being provided by varying the proportions of the colour pigments. In practice, it is possible to obtain all colour shades between the two colours.
• the horizontal axis represents the colour shades of the vertical axis, but admixed black 4 on the right-hand side, and white 5 on the left-hand side, respectively.
• the present invention also relates to means for selecting a colour shade from a colour display card 1. Moreover, the colour display card shows a horizontal division 6 and a vertical division 7. The division of the axes 6, 7 represents the proportions of the colour pigments. It should be noted that the colour display card as shown in Fig. 1 is only one amongst many different types of colour display card usable in connection with the present invention.
• Fig. 2a shows a sheet, whereon the colour display card is placed.
• Fig. 2a also shows means for selecting a shade among the mixed shades of the colour display card.
• the means are an opaque screen 9, while the means for presenting the selected mixed shade is an opening 10 in the screen 9, and the means for specifying the selected mixed shade is a mark 11 on the screen 9 to specify a coordinate on the horizontal axis and a mark 12 on the screen 9 to specify a coordinate on the vertical axis.
• the illustrated means for specifying a coordinate on a colour display card 1 are not the only possibility, and many others will be apparent to a person skilled in the art.
• FIG. 2b shows an alternative embodiment of the screen with elongated open- ings, making it easier to find the coordinates on the colour display card.
• the illustrated opening 10 is square, but the invention is not limited to this embodiment, as an opening of practically any form may be used.
• the size of the opening 10 is important, the subjacent colour display card 1 being provided with continuous colour shade transitions, and if the used opening is too large, too many mixed shades will appear in the opening 10, thus making the selection of a colour shade uncertain and imprecise.
• the opaque screen 9 may have a neutral colour, for example black, facilitating the evaluation of the selected mixed shade.
• the opaque screen 9 may be equipped with one or more predetermined selected shades for com- parison with the mixed shade. This is desirable, as the selection of a colour shade often depends on which other colours are present, so that selected shade combinations are possible as well.
• the selection means, the pres- entation means and the means for specifying the desired mixed shade are provided by means of a preprogrammed computer with associated monitor.
• a computer is advantageous in that the pigments for creating the desired mixed shades are easily specified without the need of a very large card index system for colour combinations, since the computer software itself can easily compute the desired mixed shades.
• a monitor is usually a poor choice for representing colour shades, and it is therefore necessary to generate a colour display card, for example by means of a printer.
• FIG. 3 Showing mixed shades of colours on a computer screen in connection with a com- puter software per se is known.
• Fig. 3 The illustrative example is taken from Microsoft® Paint, Version 5.0, delivered as part of Microsoft® Windows 2000.
• the Paint software is a known program accompanying most versions of the Microsoft Windows operating system.
• Fig. 3 shows a window for selecting a shade. On the right-hand side of the window, there is a field 12 with different mixed shades.
• the horizontal axis is a rainbow and the vertical axis is the colour saturation.
• the field 12 corresponds to a possible colour display card for use in connection with the present invention.
• An indicator 13 indicates the position of the colour shade on the colour display card, and a field 14 shows the presently selected colour.
• a palette 15 comprises a number of selected colour shades, and a field 16 shows the selected colour shade admixed with white above and black below, respectively.
• the colour shade thus indicated is represented by a plurality of numbers for shade, saturation, luminance, red, green and blue.
• a tool like the one illustrated has substantially the same function as the system according to the present invention, but lacks the possibility of using random colour display carts and a precise specification of the desired colour shade on said colour display card as well as the possibility to assess the specified colour shade, because said shade is being viewed together with several other non-neutral colour shades.
• said colour recognition may be carried out by means of an electronic eye for measuring the intensity of reflected light of different colour.

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• Engineering & Computer Science (AREA)
• Business, Economics & Management (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Theoretical Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Analytical Chemistry (AREA)
• Entrepreneurship & Innovation (AREA)
• Educational Administration (AREA)
• Educational Technology (AREA)
• Spectrometry And Color Measurement (AREA)
• Credit Cards Or The Like (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=34673554

Family Applications (1)

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• 2003
  • 2003-12-15 DK DK200301851A patent/DK200301851A/da not_active Application Discontinuation
• 2004
  • 2004-12-15 EP EP04803019A patent/EP1697705A2/de not_active Withdrawn
  • 2004-12-15 WO PCT/DK2004/000866 patent/WO2005057523A2/en not_active Ceased

Non-Patent Citations (1)

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