US3749471A - Method of producing an irridescent pattern on the surface of a sheet or other object and sheets or objects having patterned surface produced by this method - Google Patents

Method of producing an irridescent pattern on the surface of a sheet or other object and sheets or objects having patterned surface produced by this method Download PDF

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US3749471A
US3749471A US3749471DA US3749471A US 3749471 A US3749471 A US 3749471A US 3749471D A US3749471D A US 3749471DA US 3749471 A US3749471 A US 3749471A
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pattern
dots
surface
spacing
deformations
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J Mallard
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Fj Warren Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B44DECORATIVE ARTS
    • B44FSPECIAL DESIGNS OR PICTURES
    • B44F1/00Designs or pictures characterised by special or unusual light effects
    • B44F1/08Designs or pictures characterised by special or unusual light effects characterised by colour effects
    • B44F1/14Iridescent effects
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S359/00Optical: systems and elements
    • Y10S359/90Methods

Abstract

An irridescent surface pattern comprising an array of deformations superimposed on an array of dots marked on an impressionable light-reflecting surface, the spacing between the dots and the spacing between the deformations differing by a small percentage. In one embodiment the dots are produced by half-tone printing on the foil of a foil-laminated sheet of paper and the deformations are produced by embossing the foil with a half-tone plate made of triacetate sheet material using a screen size different to the screen size used by the plate for printing the dots.

Description

United States Patent [191 Mallard [451 July 31,1973

[ METHOD OF PRODUCING AN IRRIDESCENT PATTERN ON THE SURFACE OF A sum OR OTHER OBJECT AND sHEETs OR OBJECTS HAVING PATTERNED SURFACE PRODUCED BY THIS METHOD [75] Inventor: John Mallard, Welwyn, England [73] Assignee: FJ. Warren Limited, Ware Hertfordshire, England [22] Filed: July 15, 1971 [21] Appl. No.2 163,109

[30] Foreign Application Priority Data July 16, 1970 Great Britain 34,599/70 [S2] U.S. Cl 350/109, 350/320, 350/321, 264/1, 264/132 [51] Int. Cl. G02b 5/12 [58] Field of Search 3 /97l09, 167, 320, 321; 264/1, 132

[56] References Cited UNITED STATES PATENTS 6/1907 Deeks 264/132 3,533,690 10/1970 DeMontebello 350/35 3,564,268 2/1971 Bayne 356/71 2,130,256 9/1938 Wilson 350/109 OTHER PUBLICATIONS R. McTier, Distortion Printing & Vacuum Forming of Thermoplastic Sheet, July 1962, S.P.E. Journal, pps. 741-745.

Primary Examiner-David Schonberg Assistant Examiner-Michael J. Tokar AttorneyKemon, Palmer & Estabrook [5 7] ABSTRACT An irridescent surface pattern comprising an array of deformations superimposed on an array of dots marked on an impressionable light-reflecting surface, the spacing between the dots and the spacing between the deformations difiering by a small percentage. In one embodiment the dots are produced by half-tone printing on the foil of a foil-laminated sheet of paper and the deformations are produced by embossing the foil with a half-tone plate made of triacetate sheet material using a screen size different to the screen size used by the plate for printing the dots.

11 Claims, 4 Drawing Figures PAIEM QJULIHIQIS 3 749,471

SHEET 2 OF 2 HMf- CHANGf HALF- TO/Vf A SCREEN TONE PRINT/N6 SIZE EMBOSS/NG METHOD OF PRODUCING AN IRRIDESCENT PATTERN ON THE SURFACE OF A SHEET OR OTHER OBJECT AND SHEETS OR OBJECTS HAVING PATTERNED SURFACE PRODUCED BY THIS METHOD This invention relates to a method of producing an irridescent decorative pattern on the surface of a sheet or other object and to decorated sheets or other objects having patterned surfaces produced by this method.

The type of irridescent decorative pattern with which the present invention is concerned is a surface pattern, different parts of which will reflect light at different angles respectively, these angles of reflection being adapted to undergo changes in response to changes in the angle of incidence of the light impinging on the patterned surface.

The present invention provides a method of producing an irridescent surface pattern comprising the steps of marking an impressionable, light-reflecting surface with a pattern of spaced dots and of deforming the said surface with a pattern of spaced depressions, the spacing of the depressions and the spacing of the dots differing by not less than 1% and by not more than 10% of the larger spacing.

The present invention also provides a sheet or other object bearing an irridescent surface pattern comprising a light-reflecting surface marked with a pattern of spaced dots and deformed with a pattern of spaced depressions, in which the spacing of the depressions and the spacing of the dots differ by not less than 1% and by not more than 10% of the larger spacing.

A preferred form of the method according to this invention will now be described, with reference to the accompanying drawings, in which:

FIG. 1 is a large scale, diagrammatic representation of a small portion of an irridescent pattern,

FIG. 2 is a cross section of part of a foil laminated sheet of paper bearing the pattern of FIG. 1, and

FIG. 3 is a diagrammatic view of a cylinder printing machine, and

FIG. 4 is a block-diagram summarising the method of producing the pattern.

The pattern in FIG. 1 consists of a rectangular array of dots 1 superimposed on a rectangular array of depressions 2. The effect of a depression overlapping a dot has been represented by light cross-hatching 3; this representation is, however, diagrammatic and of necessity fails to show the parallax effect caused by the bottom of the depressions being below the plane of the surface.

The percentage difference between the spacing of the dots and the spacing of the depressions can be clearly seen from the length 4 (10X the spacing of the dots) and the length 5 (X the spacing of the depressions) to be of the order of 5% of the larger spacing. This difference in spacing has been used in the drawing for the sake of clarity but the preferred difference is of the order of 3%, whilst the preferred spacing for decorating a sheet of paper is less than l/lOOth of an inch.

In the method as applied to the production of an irridescent decorative pattern on a foil-laminated sheet of paper, the sheet is first printed with a pattern of dots by means of an ordinary letter-press block using a halftone 133 screen. A half-tone plate is then produced which has a surface pattern of raised dots such that the number per inch of these last-mentioned dots is 3% greater or 3% less than the number per inch of the dots printed on the sheet. Next, a triacetate sheet bearing an inverted half-tone plate is produced from the said halftone plate with the aid of a solvent and a pair of rollers. Then, after about 2 hours have passed, the said plate and the triacetate sheet are peeled apart, the triacetate sheet now bearing an inversion of the said plate with raised projections corresponding to the cavities in the said plate. Referring now to FIG. 3, this triacetate sheet 10 is stuck, e.g., by means of adhesive tape 12, on the flat bed 11 of a cylinder printing machine generally indicated as 15 and the printing machine is operated, without ink, to emboss the required number of patterned sheets 8.

If the required finished product is a picture with only the background pattern as described above, the foregound areas 14 of the picture are blanked out during the production of the patterned background and the foreground of the picture is reproduced on the blanked out area by a conventional printing process.

A cross-section of the pattern as applied to a foillaminated paper sheet 8 is shown in FIG. 2. A sheet of foil 6 on a backing of paper 7 is marked with ink dots l and is deformed with depressions 2. As in FIG. 1 the dots 1 are at a wider spacing than the depressions 2. The block diagram of FIG. 4 summarises the steps used in the production of an irridescent pattern on a foillaminated sheet of paper.

What I claim is:

l. A method of producing an irridescent pattern upon a light-reflecting surface which comprises:

A. marking an impressionable light-reflecting surface with a pattern of dots at a first spacing without substantially permanently deforming said surface,

B. providing a plate bearing raised projections in a pattern that substantially duplicates said pattern of dots except that the linear spacing in any direction of said raised projections differs from said first spacing by not less than 1% and not more than 10%, and

C. embossing the marked surface resulting from step A" with a pattern of deformations corresponding to said pattern of raised projections by pressing said plate against the marked surfurace.

2. The method of claim 1 wherein said marking is done by printing the pattern of dots on the foil of a foillaminated sheet of paper.

3. The method of claim 1 wherein said marking is carried out by means of half-tone printing.

4. The method of claim 1 including the additional step of blanking out parts of said surface during the production of said irridescent pattern.

5. The method of claim 1 wherein said plate is a halftone plate having a surface pattern of raised dots of the same size as said marked dots, said raised dots being 3% greater or 3% less in their number per inch than the number per inch of said marked dots.

6. An irridescent decorative article bearing a patterned light-reflecting surface wherein said surface is:

A. marked with a pattern of dots spaced at a first spacing,

B. embossed with a pattern of deformations of substantially the same size as said dots, said pattern of deformations being substantially a duplicate of the pattern of dots except that the spacing of said deformations differs from said first spacing by not less than 1% and not more than 10%.

distance for the article.

110. An article of claim 9 wherein the spacing of said deformations is less than 0.0l inch.

111. An article of claim 6 wherein the combination of dots and deformations form regions of contrast that present an irridescent printed picture to a viewer of the article.

Claims (11)

1. A method of producing an irridescent pattern upon a lightreflecting surface which comprises: A. marking an impressionable light-reflecting surface with a pattern of dots at a first spacing without substantially permanently deforming said surface, B. providing a plate bearing raised projections in a pattern that substantially duplicates said pattern of dots except that the linear spacing in any direction of said raised projections differs from said first spacing by not less than 1% and not more than 10%, and C. embossing the marked surface resulting from step ''''A'''' with a pattern of deformations corresponding to said pattern of raised projections by pressing said plate against the marked surfurace.
2. The method of claim 1 wherein said marking is done by printing the pattern of dots on the foil of a foil-laminated sheet of paper.
3. The method of claim 1 wherein said marking is carried out by means of half-tone printing.
4. The method of claim 1 including the additional step of blanking out parts of said surface during the production of said irridescent pattern.
5. The method of claim 1 wherein said plate is a half-tone plate having a surface pattern of raised dots of the same size as said marked dots, said raised dots being 3% greater or 3% less in their number per inch than the number per inch of said marked dots.
6. An irridescent decorative article bearing a patterned light-reflecting surface wherein said surface is: A. marked with a pattern of dots spaced at a first spacing, B. embossed with a pattern of deformations of substantially the same size as said dots, said pattern of deformations being substantially a duplicate of the pattern of dots except that the spacing of said deformations differs from said first spacing by not less than 1% and not more than 10%.
7. An article of claim 6 wherein said dots of the marked pattern are dots of a half-tone print.
8. An article of claim 7 wherein said deformations correspond to the printing elements of a half-tone printing plate.
9. An article of claim 6 wherein said dots and deformations are of such small size they are not individually resolved when the article is viewed at a normal viewing distance for the article.
10. An article of claim 9 wherein the spacing of said deformations is less than 0.01 inch.
11. An article of claim 6 wherein the combination of dots and deformations form regions of contrast that present an irridescent printed picture to a viewer of the article.
US3749471A 1970-07-16 1971-07-15 Method of producing an irridescent pattern on the surface of a sheet or other object and sheets or objects having patterned surface produced by this method Expired - Lifetime US3749471A (en)

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US (1) US3749471A (en)
JP (1) JPS51494B1 (en)
BE (1) BE770032A (en)
CA (1) CA936360A (en)
DE (1) DE2135487C3 (en)
ES (1) ES393272A1 (en)
FR (1) FR2101802A5 (en)
GB (1) GB1331498A (en)
NL (1) NL7109692A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3982949A (en) * 1974-08-30 1976-09-28 Edgard Reymond Half-tone screen making by decapitation of substrate projections
US4255380A (en) * 1978-02-16 1981-03-10 Bjoerkland Mats E Method and apparatus for manufacturing signs or the like carrying information which is different for different viewing angles
US4832453A (en) * 1985-07-08 1989-05-23 Saad Cook Janet Combination decorative light image source and calendrical device
US4834502A (en) * 1988-08-08 1989-05-30 Xerox Corporation Optical mouse pad
WO2001085473A1 (en) * 2000-05-10 2001-11-15 Blockfoil Group Limited Reflective surface embossing
CN103260897A (en) * 2010-12-14 2013-08-21 3M创新有限公司 Images and method of making the same
USD734950S1 (en) * 2013-07-26 2015-07-28 Lg Hausys, Ltd. Film

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US856519A (en) * 1906-09-24 1907-06-11 Hiram C J Deeks Colored picture and process of making same.
US2130256A (en) * 1935-11-29 1938-09-13 Lumasyne Inc Light reflecting display device and manufactured blank therefor
US3533690A (en) * 1967-07-14 1970-10-13 Roger Lannes De Montebello Photographic reproduction of pseudoscopic real image generator plates
US3564268A (en) * 1969-06-27 1971-02-16 Standard Change Makers Inc Document verifier using photovoltaic cell with light sensitive bars

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US856519A (en) * 1906-09-24 1907-06-11 Hiram C J Deeks Colored picture and process of making same.
US2130256A (en) * 1935-11-29 1938-09-13 Lumasyne Inc Light reflecting display device and manufactured blank therefor
US3533690A (en) * 1967-07-14 1970-10-13 Roger Lannes De Montebello Photographic reproduction of pseudoscopic real image generator plates
US3564268A (en) * 1969-06-27 1971-02-16 Standard Change Makers Inc Document verifier using photovoltaic cell with light sensitive bars

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
R. McTier, Distortion Printing & Vacuum Forming of Thermoplastic Sheet, July 1962, S.P.E. Journal, pps. 741 745. *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3982949A (en) * 1974-08-30 1976-09-28 Edgard Reymond Half-tone screen making by decapitation of substrate projections
US4255380A (en) * 1978-02-16 1981-03-10 Bjoerkland Mats E Method and apparatus for manufacturing signs or the like carrying information which is different for different viewing angles
US4832453A (en) * 1985-07-08 1989-05-23 Saad Cook Janet Combination decorative light image source and calendrical device
US4834502A (en) * 1988-08-08 1989-05-30 Xerox Corporation Optical mouse pad
WO2001085473A1 (en) * 2000-05-10 2001-11-15 Blockfoil Group Limited Reflective surface embossing
GB2377675A (en) * 2000-05-10 2003-01-22 Blockfoil Group Ltd Reflective surface embossing
GB2377675B (en) * 2000-05-10 2003-07-23 Blockfoil Group Ltd Reflective surface embossing
CN103260897A (en) * 2010-12-14 2013-08-21 3M创新有限公司 Images and method of making the same
CN103260897B (en) * 2010-12-14 2016-08-24 3M创新有限公司 And a method of manufacturing the image
USD734950S1 (en) * 2013-07-26 2015-07-28 Lg Hausys, Ltd. Film

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Publication number Publication date Type
CA936360A (en) 1973-11-06 grant
CA936360A1 (en) grant
JPS51494B1 (en) 1976-01-08 grant
NL7109692A (en) 1972-01-18 application
DE2135487C3 (en) 1975-07-31 grant
DE2135487B2 (en) 1974-12-19 application
BE770032A (en) 1971-11-16 grant
DE2135487A1 (en) 1972-02-17 application
BE770032A1 (en) grant
ES393272A1 (en) 1973-08-16 application
GB1331498A (en) 1973-09-26 application
FR2101802A5 (en) 1972-03-31 application

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