Patent EP0427507A2 successfully refreshed from Google Patents.
EP0427507A2
Expired / Lapsed
EP
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Paper-like computer output display and scanning therefor
Assignee: Xerox Corp
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Filing: 1990-11-06
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Granted: —
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Expires: 2010-11-06
Abstract
Abstract An addressable display system including a paper-like sheet (26) comprising a light transparent host layer (34) loaded with a plurality of repositionable elements (36), the elements being movable from a first orientation in which they will present a first visual appearance, to a second orientation in which they will present a second visual appearance, and independent external addressing means (30) relatively movable with respect to the display sheet for affecting the orientation of the repositionable elements.
Inventors
- 👤 Nicholas K. Sheridan
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 23:04
CPC Classifications
G; G02; G02B; G02B26/00; G02B26/02; G02B26/026; G09; G09F; G09F9/00; G09F9/30; G09F9/37; G09F9/372; H; H01; H01H; H01H2219/00; H01H2219/002; H01H2219/0023
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
53 words
A paper-like sheet (26) comprising a light transparent host layer (34), a plurality of repositionable elements (36) disposed within said host layer, said repositionable elements being movable from a first orientation in which they will present a first visual appearance to a second orientation in which they will present a second visual appearance.
Claim 2
Dependent Claim
53 words
A paper-like sheet (26) comprising a light transparent host layer (34), a plurality of repositionable elements (36) disposed within said host layer, said repositionable elements being movable from a first orientation in which they will present a first visual appearance to a second orientation in which they will present a second visual appearance.
Claim 3
Dependent Claim
41 words
A paper-like sheet as defined in claim 1, wherein each element has two surfaces bearing contrasting colors, one of which is visible through said host layer in said first orientation and the other of which is visible in said second orientation.
Claim 4
Dependent Claim
26 words
A paper-like sheet as defined in claim 1 or claim 2, further including a protective transparent overcoat layer (38) disposed upon one surface of said sheet.
Claim 5
Dependent Claim
30 words
A paper-like sheet as defined in any one of the preceding claims, further including a conductive ground plane (54) deposited upon, or positioned adjacent to, one surface of said sheet.
Claim 6
Dependent Claim
18 words
A paper-like sheet as defined in any one of the preceding claims, further including registration means (32) thereon.
Claim 7
Dependent Claim
60 words
A paper-like sheet as defined in any one of the preceding claims, wherein the plurality of repositionable elements comprises a plurality of substantially spherical balls, each ball having at least two dissimilar surfaces of contrasting colors and differential surface charges, each of said balls being contained and free to rotate within a substantially spherical cavity filled with a dielectric liquid.
Claim 8
Dependent Claim
39 words
An addressable display system including a paper-like sheet as defined in any one of the preceding claims, and addressing means (30) for affecting the orientation of said repositionable elements as the addressing means is moved relative to said sheet.
Claim 9
Dependent Claim
64 words
An addressable display system as defined in claim 7, wherein said addressing means comprises an array (42) of chargeable electrode means extending substantially normally to the direction of relative movement and positioned adjacent to one surface of said sheet, and switchable potential source means for selectively charging ones of said electrode meansfor making information visible upon said display sheet by selectively repositioning said elements.
Claim 10
Dependent Claim
33 words
An addressable display system as defined in claim 7 or claim 8, further comprising a processor for transmitting information, and wherein said addressing means is interconnected with said processor for receiving information therefrom.
Claim 11
Dependent Claim
34 words
An addressable display system as defined in claim 9 when appended to claim 8, wherein said addressing means is interconnected with said processor for switching said potential source in response to the said information.
Claim 12
Dependent Claim
31 words
An addressable display system as defined in any one of claims 7 to 10 when appended to claim 5, wherein said addressing means includes sensing means for identifying said registration means.
Claim 13
Dependent Claim
23 words
An addressable display system as defined in any one of claims 7 to 11, wherein said addressing means further comprises sheet feeding means.
Claim 14
Dependent Claim
23 words
An addressable display system as defined in any one of claims 7 to 12, wherein said addressing means is a hand held wand.
Claim 15
Dependent Claim
34 words
An addressable display system as defined in claim 8, wherein said switchable potential source means applies a potential to ones of said electrode means of a magnitude above the threshold for repositioning said elements.
Claim 16
Dependent Claim
43 words
An addressable display system as defined in claim 8, wherein said addressing means includes holding means (72) for extending the time that said elements are held in an electric field in their new orientation after they have been repositioned by said electrode means.
Claim 17
Dependent Claim
38 words
An addressable display system as defined in claim 15, wherein said holding means comprises a conductive electrode and a potential source (78) connected thereto, said potential source being of a magnitude below the threshold for repositioning said elements.
Claim 18
Dependent Claim
23 words
An addressable display system as defined in any one of claims 7 to 16, wherein said addressing means includes a pen-like stylus (80).
Claim 19
Dependent Claim
34 words
An addressable display system as defined in claim 17, wherein said pen-like stylus includes a conductive nib connected to a source of electrical potential of a magnitude above the threshold for repositioning said elements.
References Cited (Backward Citations)
No citation records indexed.
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