US3712733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magneto-electric apparatus for reproducing an image on a recording element
Assignee: RCA Corp
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Filing: 1972-03-30
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Granted: 1973-01-23
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Expires: 1992-03-30
Abstract
Abstract An image is reproduced on the surface of a recording element, comprising a light-transmitting substrate and a photoconductive layer, by apparatus adapted to move the recording element past charging, toning, and image-exposing stations, in the order named. The recording element is uniformly charged, uniformly toned with magnetic toner particles, and exposed to a light image at the aforementioned stations, respectively. A magnetic field is disposed adjacent the image-exposing station to remove toner particles from the light-struck portions of the recording element during the exposure thereof, whereby to develop the image. The apparatus also includes means for projecting the developed image onto a screen, during, and after, the developing operation.
Inventors
- 👤 E Glaimo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:03
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22; G03G15/34; G03G15/342
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
60 words
Magneto-electric apparatus for reproducing an image on the surface of a recording element, as described in claim 1, wherein a flood light is disposed adjacent said image-exposing station and adapted to direct light onto the toned surface of said recording element during the exposure thereof by said image to be reproduced, whereby to assist in the development of said image.
Claim 2
Dependent Claim
42 words
Magneto-electric apparatus for reproducing an image on the surface of a recording element, as described in claim 1, wherein said means to apply a magnetic field to said toner particles comprises an electromagnet and means to energize said electromagnet with voltage pluses.
Claim 3
Dependent Claim
37 words
Magneto-electric apparatus for reproducing an image on the surface of a recording element, as described in claim 3, wherein said electromagnet comprises two spaced-apart, substantially parallel, coils, and said image-exposing station is located between said two coils.
Claim 4
Dependent Claim
65 words
Magneto-electric apparatus for reproducing an image on the surface of a recording element, as described in claim 1, wherein said means to move said recording element past a charging station, a toning station, and an image-exposing station comprises, in addition, means to move said recording element past an erasing station for removing said toner particles from said surfacE, whereby said recording element may be reused.
Claim 5
Dependent Claim
56 words
Magneto-electric apparatus for reproducing an image on the surface of a recording element, as described in claim 1, wherein means are cooperatively associated with said means to expose said photoconductive layer to project and to monitor the development of the image reproduced on said surface during 3/27/72 E C G , and after, the exposure thereof.
Claim 6
Dependent Claim
53 words
Magneto-electric apparatus for reproducing an image on the surface of a recording element, as described in claim 1 comprising, in addition, a fixing station, and said means to move said recording element comprises, in addition, means to move said recording element past said fixing station for fixing said toner particles to said surface.
Claim 7
Dependent Claim
55 words
Magneto-electric apparatus for reproducing an image on the surface of a recording element, as described in claim 1, wherein said magnetic toner particles are coated with a thermoplastic material, and means are provided to fix the coated magnetic toner particles to said surface after the image to be reproduced has been developed on said surface.
References Cited (Backward Citations)
US2968552A
Cited
US2924519A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |