Patent EP0283233A2 successfully refreshed from Google Patents.
EP0283233A2
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EP
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Security badge
Assignee: HOLOFAX Ltd
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Filing: 1988-03-14
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Granted: —
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Expires: 2008-03-14
Abstract
Abstract A security item such as a badge comprises a piece of information (e.g. a photograph of an individual) displayed both as an object (14) and as an identical holographic image (14') within a common visual field, there being parallax between the information in its object form (14) and the observed holographic image (14'). In order to produce the security item, the piece of information is placed a distance behind a holographic film (13) during exposure, the developed film (13) and the piece of information (14) itself are bonded to a common substrate (20), and the assembly is encapsulated within a plastics holder (H).
Inventors
- 👤 Michael Tayler Kirk
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-10 01:09
CPC Classifications
G; G03; G03H; G03H1/00; G03H1/0005; G03H1/0011; B; B42; B42D; B42D25/00; B42D25/30; B42D25/328; G03H1/02; B42D25/20; B42D25/26; B42D25/40; B42D25/45; G03H1/024; G03H1/0248; G03H2001/0204; G03H1/04; G03H1/0402; G03H2001/0415; G03H2001/0417; G03H1/20; G03H2001/207; G03H1/22; G03H1/2249; G03H2001/2281; G03H2001/2284; G03H2210/00; G03H2210/20; G03H2210/30; G03H2210/33; G03H2210/50; G03H2210/54; G03H2210/56; G03H2210/562; G03H2227/00; G03H2227/04; G03H2250/00; G03H2250/33; G03H2250/40; G03H2270/00; G03H2270/20; G03H2270/23
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
29 words
A security item characterised by at least one piece of information displayed as an object (14) and an identical or similar holographic image (14ʹ) within a common visual field.
Claim 2
Dependent Claim
29 words
A security item characterised by at least one piece of information displayed as an object (14) and an identical or similar holographic image (14ʹ) within a common visual field.
Claim 3
Dependent Claim
20 words
A security item as claimed in claim 1, wherein the information (14) and the observed holographic image (14ʹ) exhibit parallax.
Claim 4
Dependent Claim
46 words
A security item as claimed in claim 1 or 2, wherein the information in object form (14) and a film (13) bearing the holographic image (14ʹ) are secured to a common substrate (20), the information preferably being sandwiched between the substrate (20) and the film (13).
Claim 5
Dependent Claim
45 words
A security item as claimed in claim 1, 2 or 3, wherein the information in object form (14) and a film (13) bearing the holographic image (14ʹ) are encapsulated within a plastics holder (H), the film (13) preferably being chemically bonded to the holder (H).
Claim 6
Dependent Claim
26 words
A security item as calimed in any preceding claim, wherein the holographic image (14ʹ) is formed by a reflection hologram, preferably a white light reflection hologram.
Claim 7
Dependent Claim
39 words
A security item as claimed in claim 5, wherein a film (13) bearing the holographic image (14ʹ) is mounted on a substrate (20) which incorporates a dark-coloured area at least in the region of the observed holographic image (14ʹ).
Claim 8
Dependent Claim
21 words
A security item as claimed in any preceding claim, wherein said piece of information comprises a photograph (14) of an individual.
Claim 9
Dependent Claim
25 words
A security item as claimed in claim 3, wherein said piece of information also includes personal details of the individual depicted in the photograph (14).
Claim 10
Independent Claim
69 words
A method of producing security item, characterised by the formation by means of an exposure on holographic film (13) of a holographic image (14ʹ) of a piece of information, development of the holographic image (14ʹ), and disposition in a common visual field of the developed film (13) and, in object form (14), the same or a similar piece of information as was used to produce the holographic image (14ʹ).
Claim 11
Independent Claim
69 words
A method of producing security item, characterised by the formation by means of an exposure on holographic film (13) of a holographic image (14ʹ) of a piece of information, development of the holographic image (14ʹ), and disposition in a common visual field of the developed film (13) and, in object form (14), the same or a similar piece of information as was used to produce the holographic image (14ʹ).
Claim 12
Dependent Claim
61 words
A method as claimed in claim 9, wherein during the formation of the holographic image (14ʹ), said at least one piece of information is positioned a distance (preferably between 1mm and 20mm) away from the film (13), such that a parallax is created between the information in object form (14) and the observed holographic image (14ʹ) in the finished security item.
Claim 13
Dependent Claim
52 words
A method as claimed in claim 9 or 10, wherein the security item is formed by securing the information in object form (14) and the holographic film (13) to a common substrate (20), with the information in object form (14) preferably being sandwiched between the substrate (20) and the holographic film (13).
Claim 14
Dependent Claim
46 words
A method as claimed in claim 9, 10 or 11, wherein the security item is formed by encapsulating the information in object form (14) and the film (13) whithin a plastics holder (H), and preferably also by chemically bonding the film (13) to the holder (H).
Claim 15
Independent Claim
36 words
A method as claimed in any one of claims 9 to 12, wherein a single exposure is used to produce holographic images of a plurality of pieces of information (55) for a plurality of security items.
Claim 16
Dependent Claim
23 words
A method as claimed in claim 13, wherein during exposure the pieces of information (55) are positioned on a common sheet-like substrate (56).
Claim 17
Dependent Claim
64 words
A method as claimed in claim 13 or 14, wherein the exposure is performed by placing the holographic film (60) onto a plate (38) having in a surface thereof recesses(39) which are connected to a source of vacuum, such that the film (60) overlies the recesses (39) with at least some of the recesses being disposed away from the edges of the film (60).
Claim 18
Dependent Claim
44 words
A method as claimed in claim 15, wherein the recesses (39) are arranged in a grid-like formation, and each interstice of the grid defines an area of the film where an image of a respective one of the pieces of information (55) is formed.
Claim 19
Independent Claim
90 words
A method as claimed in any one of claims 9 to 16, wherein the exposure is performed using apparatus which comprises a film carrier (34) and a data carrier (37) which is mounted for lateral sliding movement relative to the film carrier (34), the piece or pieces of information (55) are loaded into the data carrier (37) while the latter is displaced laterally from the film carrier (34), and the data carrier (37) is moved to a position closely adjacent to the film carrier (34) prior to the actual exposure.
Claim 20
Dependent Claim
64 words
A method as claimed in claim 17, wherein the data carrier (37) runs on rails (36) which are fixed relative to the film carrier (34) and has slide elements (48) which engage the rails (36) and bearing elements (53) which engage the film carrier (34), and the bearing elements (53) hold the slide elements (48) clear of the rails (36) during the actual exposure.
Claim 21
Independent Claim
50 words
A method as claimed in any one of claims 9 to 18, wherein during the exposure the piece or pieces of information (55) are mounted on the upper surface of a transparent plate (44) and the exposing beam is incident upon the piece of pieces of information through the plate.
References Cited (Backward Citations)
No citation records indexed.
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