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US 4,064,514 AGranted
Portable camera
AssigneeXerox Corporation
InventorRobert W. Gundlach
Life of this patent
Estimating the term…
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.
Claims5
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.
4 more elements
Dependencies are inferred from the claim text.