US3585965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Development chamber
Assignee: Raytheon Co
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Filing: 1969-01-09
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Granted: 1971-06-22
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Expires: 1989-01-09
Abstract
Abstract The development chamber comprises first and second spaced discs around which a flexible medium to be developed is wrapped around a major portion of the disc circumferences. The medium to be developed has a latent image thereon, which latent image is developed by selective acquisition of metal atoms from a vapor source, in accordance with the latent image character. A vapor source is placed inside the development chamber, between the discs, the discs rotate as the medium proceeds around the circumference exposing the latent images to the metal vapor, and upon completion of the development process moves away from the development chamber.
Inventors
- 👤 Alfred F Kaspaul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:39
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
92 words
Means to develop latent images on an indefinite length moving web comprising: a pair of axially aligned rotatable discs; means to feed said web in a path to peripherally engage said discs so as to form a substantially closed chamber with the image areas on said web facing inwardly; said moving web thereby rotating said discs; a source of vaporized developer material disposed within said chamber; and wiper means extending between said discs at an open area thereof with respect to said web whereby said discs are wiped clean of developer material.
Claim 2
Dependent Claim
92 words
Means to develop latent images on an indefinite length moving web comprising: a pair of axially aligned rotatable discs; means to feed said web in a path to peripherally engage said discs so as to form a substantially closed chamber with the image areas on said web facing inwardly; said moving web thereby rotating said discs; a source of vaporized developer material disposed within said chamber; and wiper means extending between said discs at an open area thereof with respect to said web whereby said discs are wiped clean of developer material.
Claim 3
Dependent Claim
34 words
The development chamber of claim 1 wherein at least one of said discs is transparent so that the development activity within said development chamber can be visually observed from exteriorly of said development chamber.
Claim 4
Dependent Claim
36 words
The development chamber of claim 1 wherein said discs are rotatably mounted by being mounted upon a rotatable hub, and said wiper engages said hub to wipe said hub as said hub rotates with said discs.
Claim 5
Dependent Claim
40 words
The development chamber of claim 1 wherein said wiper carries an organic liquid thereon having low free surface energy to deposit organic liquid on said discs as said wiper wipes said discs to inhibit deposition of atoms on said discs.
Claim 6
Dependent Claim
55 words
The development chamber of claim 1 wherein said first and second closure plates are of such material and are maintained at such a temperature that metal atoms at a suitable metal atom rate for imagewise deposition of metal atoms on the medium do not form a stable film on said first and second closure plates.
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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |