Patent US3986771A successfully refreshed from Google Patents.
US3986771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light image storing and reproducing device
Assignee: Canon Inc
•
Filing: 1974-12-31
•
Granted: 1976-10-19
•
Expires: 1994-12-31
Abstract
Abstract A light image storing and reproducing device for storage and reproduction of original images comprises an information storage medium including a member having a photoconductive substance and an electrochromic substance, said member being supported between electrodes, original image projecting means for projecting an original image on said information storage medium, illuminating means for illuminating the surface of said information storage medium, and voltage applying means for applying a voltage of a prescribed polarity and a voltage of a reverse polarity interchangeably between the electrodes of the information storage medium.
Inventors
- 👤 Syusei Tsukada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:18
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/01; G03G15/0142; G03G15/0147; G03G15/0152; G03G15/0163; G03G15/04; G03G15/04009; G03G15/22; G03G15/221
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
154 words
A device for storing and reproducing light images of original images comprising: a plurality of information storage mediums, each including a member having a photoconductive substance and an electrochromic substance and being supported between electrodes; original image projecting means for projecting original images on said information storage mediums; a plurality of voltage applying means for applying a voltage of one polarity and a voltage of a reverse polarity interchangeably across the electrodes of respective information storage mediums, wherein information images corresponding to projected original images are formed on said storage mediums when said one polarity is applied thereto, and said information images are stored thereon until erased by applying said reverse polarity thereto; a photosensitive member; and means for forming a composite image on said photosensitive member, said image forming means including means for illuminating said mediums and means for projecting said stored images of said mediums in superimposed form on said photosensitive member.
Claim 2
Independent Claim
154 words
A device for storing and reproducing light images of original images comprising: a plurality of information storage mediums, each including a member having a photoconductive substance and an electrochromic substance and being supported between electrodes; original image projecting means for projecting original images on said information storage mediums; a plurality of voltage applying means for applying a voltage of one polarity and a voltage of a reverse polarity interchangeably across the electrodes of respective information storage mediums, wherein information images corresponding to projected original images are formed on said storage mediums when said one polarity is applied thereto, and said information images are stored thereon until erased by applying said reverse polarity thereto; a photosensitive member; and means for forming a composite image on said photosensitive member, said image forming means including means for illuminating said mediums and means for projecting said stored images of said mediums in superimposed form on said photosensitive member.
Claim 3
Dependent Claim
29 words
A device for storing and reproducing light images as set forth in claim 1 in which said plurality of information storage mediums are arranged in parallel with each other.
Claim 4
Dependent Claim
30 words
A device for storing and reproducing light images as set forth in claim 1 further comprising viewing screen means disposed for viewing said images stored on said information storage mediums.
Claim 5
Dependent Claim
55 words
A device for storing and reproducing light images as set forth in claim 3 wherein said viewing screen means has a light-permeating face and a light-absorbing face, and is movably disposed with respect to the surfaces of said information storage mediums wherein the light-permeating and light-absorbing faces can be selectably shifted to a viewing position.
Claim 6
Independent Claim
120 words
An apparatus for storing and reproducing light images of original images comprising: an information storage medium including a member comprising a photoconductive substance and an electrochromic substance, said member being supported between a pair of electrodes; a photosensitive member; means for supporting an original; projecting means having a first optical path for projecting an image of the original onto said information storage medium, a second optical path for projecting an image of the original onto said photosensitive member, and a third optical path for projecting an image from said information storage medium onto said photosenstive member; means for separating color images of the original for projection along said optical paths; and means for reproducing images projected on said photosensitive member.
Claim 7
Independent Claim
120 words
An apparatus for storing and reproducing light images of original images comprising: an information storage medium including a member comprising a photoconductive substance and an electrochromic substance, said member being supported between a pair of electrodes; a photosensitive member; means for supporting an original; projecting means having a first optical path for projecting an image of the original onto said information storage medium, a second optical path for projecting an image of the original onto said photosensitive member, and a third optical path for projecting an image from said information storage medium onto said photosenstive member; means for separating color images of the original for projection along said optical paths; and means for reproducing images projected on said photosensitive member.
Claim 8
Dependent Claim
62 words
An apparatus for storing and reproducing light images as set forth in claim 5 wherein said projecting means includes a changeover mechanism disposed in a common portion of both said first and second optical paths and being positionable to complete said first and second paths selectively, whereby the original image is projected either onto the image storage medium or the photosensitive member.
Claim 9
Dependent Claim
26 words
An apparatus for storing and reproducing light images according to claim 5, wherein said photosensitive member is supported for movement during said projection of images thereon.
Claim 10
Dependent Claim
49 words
An apparatus for storing and reproducing light images according to claim 7, wherein said information storage medium is supported for movement in synchronism with said photosensitive member, and wherein said projection means includes means for scanning said information storage medium to project an image thereof onto said photosensitive member.
Claim 11
Dependent Claim
37 words
An apparatus for storing and reproducing light images according to claim 7, in which said projecting means includes movable scanning means disposed in said second and third optical paths for movement in synchronism with said photosensitive member.
References Cited (Backward Citations)
US3439174A
Cited
US3451741A
Cited
US3521941A
Cited
US3589896A
Cited
US3692659A
Cited
US3756718A
Cited
US3764211A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-19 | 1980-04-19 | 1980-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-19 | 1984-04-19 | 1984-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-19 | 1988-04-19 | 1988-10-19 | $7700.00 | Window Closed / Lapsed |