US3673936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image copying apparatus
Assignee: Individual
•
Filing: 1970-04-27
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Granted: 1972-07-04
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Expires: 1990-04-27
Abstract
Abstract Apparatus for producing on paper a copy of images projected onto a viewing surface such as a cathode ray tube comprises elements for focusing the image onto the surface of electrostatic copying paper to expose the paper and means to then subsequently develop the exposed image. The apparatus is arranged so that the copy can be made while the surface on which the image is projected is available to be viewed by an observer. The disclosure includes means permitting the remote control of the apparatus as well as means whereby copies of images appearing on more than one viewing surface may be made.
Inventors
- 👤 J James Stone Jr
- 👤 Thomas J Madden Jr
- 👤 Glendon T Gerlach
- 👤 Robert I Keur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:30
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22; G03G15/26
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
190 words
Apparatus for copying images projected on a cathode ray tube viewing surface comprising means positioned in front of the viewing surface and spaced a distance therefrom, for projecting an image from the viewing surface onto a sheet of copying paper and for allowing direct viewing of the surface by an observer; image copying means comprising: a source of copying paper; means for supplying copying paper from said source; means for severing a desired length of copying paper; means for imposing an electrostatic charge on the surface of the copying paper; means for transporting the charged length of copying paper to a position at which the image on the viewing surface may be impressed thereon to selectively discharge the surface of the copying paper to form a latent image thereon; means for developing the latent image; means for transporting the exposed copying paper through said developing means; means for controlling the brightness of the image on the surface of the tube; and means for controlling said brightness controlling means to cause the image to brighten when it is desired to expose the surface of the charged copying paper to the image.
Claim 2
Dependent Claim
190 words
Apparatus for copying images projected on a cathode ray tube viewing surface comprising means positioned in front of the viewing surface and spaced a distance therefrom, for projecting an image from the viewing surface onto a sheet of copying paper and for allowing direct viewing of the surface by an observer; image copying means comprising: a source of copying paper; means for supplying copying paper from said source; means for severing a desired length of copying paper; means for imposing an electrostatic charge on the surface of the copying paper; means for transporting the charged length of copying paper to a position at which the image on the viewing surface may be impressed thereon to selectively discharge the surface of the copying paper to form a latent image thereon; means for developing the latent image; means for transporting the exposed copying paper through said developing means; means for controlling the brightness of the image on the surface of the tube; and means for controlling said brightness controlling means to cause the image to brighten when it is desired to expose the surface of the charged copying paper to the image.
Claim 3
Dependent Claim
52 words
The apparatus of claim 1 wherein the viewing surface and said projecting means are positioned above said image copying means and said projecting means includes an angled mirror in front of the viewing surface and a lens system for focusing the image onto the surface of copying paper below said lens system.
Claim 4
Dependent Claim
43 words
The apparatus of claim 2 including an electrical circuit for controlling said image copying means, said electrical circuit including: a print switch; an exposure timer; means responsive to the operation of said exposure timer, and electrical switch means controlled by said exposure timer.
Claim 5
Dependent Claim
43 words
The apparatus of claim 3 wherein said electrical switch means are included in said brightness controlling means and when operated by said exposure timer are effective to increase the brightness of the image for a period of time determined by said exposure timer.
Claim 6
Dependent Claim
148 words
Apparatus for copying images selectively from any one of a plurality of cathode ray tube monitors comprising: means for selectively switching the image on any one monitor to another cathode ray tube while at the same time continuing the display of the image on the selected monitor, image copying means comprising: a source of copying paper; means supplying copying paper from said source; means for severing a desired length of copying paper; means for imposing an electrostatic charge on the surface of said copying paper; means for transporting the charged length of copying paper to an exposure position; optical means for projecting the selected image on said another cathode ray tube onto the copying paper in the exposure position to form a latent image thereon; means for developing the latent image; and means for transporting the exposed copying paper through said means and delivering it to the user.
Claim 7
Dependent Claim
148 words
Apparatus for copying images selectively from any one of a plurality of cathode ray tube monitors comprising: means for selectively switching the image on any one monitor to another cathode ray tube while at the same time continuing the display of the image on the selected monitor, image copying means comprising: a source of copying paper; means supplying copying paper from said source; means for severing a desired length of copying paper; means for imposing an electrostatic charge on the surface of said copying paper; means for transporting the charged length of copying paper to an exposure position; optical means for projecting the selected image on said another cathode ray tube onto the copying paper in the exposure position to form a latent image thereon; means for developing the latent image; and means for transporting the exposed copying paper through said means and delivering it to the user.
Claim 8
Dependent Claim
52 words
The apparatus of claim 5 including an operator control unit having means selecting the monitor having an image on its viewing surface to be copied, means initiating copying of the selected image, means indicating that the image copying means is in use and means for indicating that a copy has been made.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |