Spectrally matched print proofer

• US 7,352,488 B2
• Filed: 12/18/2001
• Issued: 04/01/2008
• Est. Priority Date: 12/18/2000
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Genoa Color Technologies Limited
• Inventors: Ben-Chorin, Moshe, Ben-David, Ilan
• Primary Examiner(s): Williams; Kimberly
• Assistant Examiner(s): Baker; Charlotte M.
• Application Number:
  US10/017,546
• Publication Number:
  US 20020149546A1
• Time in Patent Office: 2,296 Days
• Field of Search: 358/1.9, 358/504, 358/518, 358/1.15, 358/501, 358/512, 382/112, 382/162, 382/167, 345/207, 345/204, 345/593, 345/32, 348/243, 348/253
• US Class Current: 358/1.9
• CPC Class Codes: G09G 2310/0235 Field-sequential colour display
• CPC Class Codes: G09G 3/002 to project the image of a two-dimensional display, such as an array of light emitting or modulating elements or a CRT
• CPC Class Codes: G09G 3/2022 using sub-frames
• CPC Class Codes: G09G 3/34 by control of light from an independent source
• CPC Class Codes: G09G 3/3406 Control of illumination source illumination devices structurally associated with liquid crystal cells G02F1/1336
• CPC Class Codes: G09G 5/04 using circuits for interfacing with colour displays
• CPC Class Codes: H04N 1/508 using the same reproducing head for two or more colour components
• CPC Class Codes: H04N 1/6011 with simulation on a subsidiary picture reproducer H04N1/622 takes precedence; matching two or more picture reproducers H04N1/6052

Abstract

A device, system and a method for soft proofing of an image before it is printed onto printed material, such that the colors of the image substantially reproduce, to the human eye, the colors as they should appear on the printed material.

Claims

1. A device for soft proofing image data for printed material, the device comprising:

(a) a light source and at least four color filters, wherein light passing through each of said color filters produces light having a different one of at least four primary colors, respectively;

(b) a converter for converting the image data to a plurality of spectral components corresponding to said image data according to at least one characteristic of the printed material, said spectral components for use in producing converted data corresponding to at least one of said at least four primary colors;

(c) a controller for determining an additive linear combination of said at least four primary colors according to said converted data for production by said light source; and

(d) a viewing screen for displaying the image data according to said additive linear combination from said controller, wherein said at least four color filters are arranged between said light source and said viewing screen such that any light emitted by said light source passes through only a single one of said color filters before reaching the viewing screen.

2. The device of claim 1, further comprising:

(e) a projector for projecting light of said at least four primary colors onto said viewing screen according to said determined additive linear combination.

3. The device of claim 1, wherein said light source comprises a polychromatic source, and wherein said at least four color filters arranged alongside one another in a direction transverse to light emitted by said light source.

4. The device of claim 1, wherein said projector comprises a spatial light modulator for determining a path of light of each primary color.

5. The device of claim 1, wherein said light source comprises a continuously variable neutral density litter for controlling brightness of said light of said at least four primary colors.

6. The device of claim 1, wherein said at least one characteristic of the printed material is determined according to a transmission spectrum of a combination of inks.

7. The device of claim 1, wherein said light source for producing light having at least four primary colors is selected such that a spectrum of said light having at least four primary colors is matched to at least a portion of a spectrum of a combination of inks.

8. The device of claim 1, wherein said at least one characteristic of the printed material is determined according to a color reflection characteristic of a material for receiving said combination of inks.

9. The device of claim 1, wherein said at least one characteristic of the printed material is determined according to a spectrum of a combination of inks, and wherein a brightness of said light having at least four primary colors is adjusted according to illumination conditions for said material for receiving said combination of inks.

10. The device of claim 1, further comprising a white light source for producing white light, wherein said illumination conditions are adjusted according to an amount of said white light being produced.

11. The device of claim 1, wherein said at least one characteristic of the printed material is also determined according to a spectrum of at least one ink, and said filtered light is adjusted according to a density of said at least one ink compared to said filters.

12. The device of claim 1, wherein a saturation of said light having at least four primary colors is adjusted according to a gloss of said material, said material for receiving at least one ink.