US3786515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latent image recording method and electric recording apparatus
Assignee: Horizons Inc
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Filing: 1972-06-19
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Granted: 1974-01-15
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Expires: 1992-06-19
Abstract
Abstract An improvement in the method and apparatus for generating imagery in which information from either an original document or an electronic input is placed on paper or other suitable record medium by the use of control element(s) which establish an electric field adjacent to the record medium; the recording element(s) being immersed in liquid, described in U.S. Pat. 3,623,122 which improvement consists in separating the image forming step from the development step and the apparatus for accomplishing the same.
Inventors
- 👤 R Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:14
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/23; H04N1/29; G; G03; G03G; G03G15/00; G03G15/22; G03G15/32; G03G15/321; G03G15/325
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
140 words
A recording apparatus including: at least one recording stylus, means to move a recording medium relative to said stylus, means to maintain one end of said stylus in physical contact with said recording medium, said end of said stylus and said recording medium being immersed in an insulating liquid, a counterelectrode disposed at the face of said recording medium opposite to the face which is maintained in contact with the stylus, means to feed a signal to said stylus indicative of information to be recorded on said record medium, whereby a latent image is formed on said recording medium, and means to move said recording medium into physical contact with a liquid developer whereby said latent image is rendered visible, and recording of a visible image is achieved, said liquid developer being in a separate pool from said insulating liquid.
Claim 2
Dependent Claim
140 words
A recording apparatus including: at least one recording stylus, means to move a recording medium relative to said stylus, means to maintain one end of said stylus in physical contact with said recording medium, said end of said stylus and said recording medium being immersed in an insulating liquid, a counterelectrode disposed at the face of said recording medium opposite to the face which is maintained in contact with the stylus, means to feed a signal to said stylus indicative of information to be recorded on said record medium, whereby a latent image is formed on said recording medium, and means to move said recording medium into physical contact with a liquid developer whereby said latent image is rendered visible, and recording of a visible image is achieved, said liquid developer being in a separate pool from said insulating liquid.
Claim 3
Dependent Claim
18 words
The apparatus of claim 1 wherein a source of potential is connected between said stylus and said counterelectrode.
Claim 4
Dependent Claim
34 words
The apparatus of claim 1 including at least one electro-optical transducer provided for controlling the potential between said stylus and said counter-electrode and including optics for imaging an optical signal on said electro-optical transducer.
Claim 5
Dependent Claim
39 words
The apparatus of claim 1 wherein the stylus comprises an array of recording elements which extend across the width of the recording medium, the signal fed to each of said elements being generated individually by electronic or photoconductor means.
References Cited (Backward Citations)
US3681527A
Cited
US3644930A
Cited
US3694574A
Cited
US3622468A
Cited
US3623122A
Cited
US3654095A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |