Patent US4064514A successfully refreshed from Google Patents.
US4064514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable camera
Assignee: Xerox Corp
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Filing: 1975-01-06
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Granted: 1977-12-20
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Expires: 1995-01-06
Abstract
Abstract A portable camera having the photosensitive member including an electrically conductive supportive substrate, a photoconductive layer overlying the substrate, and a leaky dielectric film overlying the free surface of the photoconductive layer. This camera is also provided with an electrically biased pad for contact charging of the photosensitive member and means for development of the photosensitive member within the camera subsequent to latent-image formation. Fixation of the developed image is achieved by overcoating said image with a permanent film or coating.
Inventors
- 👤 Robert W. Gundlach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:04
CPC Classifications
G; G03; G03G; G03G13/00; G03G13/22; G03G15/00; G03G15/22; G03G15/221; G03G15/04; G03G15/043; G03G15/0435
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
174 words
In a portable electrophotographic camera comprising: a. a light tight housing; b. an objective lens; c. a leaky dielectric overcoated consumable photosensitive recording medium located within the light tight housing and disposed parallel to the image plane of the lens said medium comprising a conductive substrate, a photoconductive insulating layer of from about 15 to about 300 microns in thickness operatively disposed in relation to said substrate and a leaky dielectric overcoating layer, wherein the ratio of thickness of said overcoating layer to said photoconductive insulating layer is from about 0.1:1 to about 1:1; d. means for admission and exclusion of image information from impinging upon the photosensitive recording medium; and e. means for developing the image information recorded on said photosensitive member, the improvement comprising: means for essentially liquid free contact charging the recording surface of the leaky dielectric overcoating of the photosensitive recording medium, the frequency of point contact of the charging means with the surface of the leaky dielectric overcoating being approximately three times the thickness of said overcoating or less.
Claim 2
Dependent Claim
174 words
In a portable electrophotographic camera comprising: a. a light tight housing; b. an objective lens; c. a leaky dielectric overcoated consumable photosensitive recording medium located within the light tight housing and disposed parallel to the image plane of the lens said medium comprising a conductive substrate, a photoconductive insulating layer of from about 15 to about 300 microns in thickness operatively disposed in relation to said substrate and a leaky dielectric overcoating layer, wherein the ratio of thickness of said overcoating layer to said photoconductive insulating layer is from about 0.1:1 to about 1:1; d. means for admission and exclusion of image information from impinging upon the photosensitive recording medium; and e. means for developing the image information recorded on said photosensitive member, the improvement comprising: means for essentially liquid free contact charging the recording surface of the leaky dielectric overcoating of the photosensitive recording medium, the frequency of point contact of the charging means with the surface of the leaky dielectric overcoating being approximately three times the thickness of said overcoating or less.
Claim 3
Dependent Claim
45 words
The portable camera of claim 1, wherein the camera also contains means for lamination of an adhesive sheet to the recording surface of the leaky dielectric overcoating of the photosensitive medium subsequent to the development of image information on the recording surface of said medium.
Claim 4
Dependent Claim
28 words
The portable camera of claim 2, wherein the camera also contains means for delamination of the leaky dielectric overcoating from the other components of the photosensitive recording medium.
Claim 5
Dependent Claim
12 words
The portable camera of claim 1, wherein the adhesive sheet is transparent.
Claim 6
Dependent Claim
12 words
The portable camera of claim 1, wherein the adhesive sheet is opaque.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-19 | 1981-06-20 | 1981-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-19 | 1985-06-20 | 1985-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-19 | 1989-06-20 | 1989-12-20 | $7700.00 | Window Closed / Lapsed |