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US4947186A
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Apparatus and method for a UV laser image recorder
Assignee: Aerospace Corp
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Filing: 1988-09-22
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Granted: 1990-08-07
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Expires: 2008-09-22
Abstract
Abstract An ultraviolet (UV) laser image recorder, consisting of an argon laser operating in the ultraviolet, with frequency doubling, records on a processless electron recording medium (PERM) and can develop either red or blue coloration in PERM.
Inventors
- 👤 Ancel R. Calloway
- 👤 Jay H. Berman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:18
CPC Classifications
G; G06; G06K; G06K15/00; G06K15/02; G06K15/12; G06K15/1204; H; H04; H04N; H04N1/00; H04N1/024; H04N1/032; H04N1/036
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
119 words
An apparatus for recording an image on a processless electron recording medium (PERM), comprising: a. an argon laser capable of generating light pulses at a wavelength of 514.5 nm; b. a means of modulating the discrete light pulses to depths of greater than 90 percent; c. a means for doubling the frequency of the 514.5 nm primary light into a 257.3 nm wavelength laser beam; d. a means for focusing and directing the ultraviolet laser beam onto the surface of the PERM; e. a means for coordinating and controlling the rate and intensity at which the ultraviolet light is applied to the PERM; f. whereby individual pixels on the PERM are developed by exposure to the ultraviolet laser light.
Claim 2
Independent Claim
119 words
An apparatus for recording an image on a processless electron recording medium (PERM), comprising: a. an argon laser capable of generating light pulses at a wavelength of 514.5 nm; b. a means of modulating the discrete light pulses to depths of greater than 90 percent; c. a means for doubling the frequency of the 514.5 nm primary light into a 257.3 nm wavelength laser beam; d. a means for focusing and directing the ultraviolet laser beam onto the surface of the PERM; e. a means for coordinating and controlling the rate and intensity at which the ultraviolet light is applied to the PERM; f. whereby individual pixels on the PERM are developed by exposure to the ultraviolet laser light.
Claim 3
Dependent Claim
76 words
The process of developing an image in a processless electron recording medium (PERM) comprising the steps of: (a) generating discrete light pulses from a laser; (b) adjusting the duration and intensity of the light pulses so as to form a pulsed beam of ultraviolet light; (c) applying the ultraviolet light to the PERM so as to expose the PERM; and (d) adjusting the duration of the exposure, so as to develop red or blue color pixels.
Claim 4
Dependent Claim
76 words
The process of developing an image in a processless electron recording medium (PERM) comprising the steps of: (a) generating discrete light pulses from a laser; (b) adjusting the duration and intensity of the light pulses so as to form a pulsed beam of ultraviolet light; (c) applying the ultraviolet light to the PERM so as to expose the PERM; and (d) adjusting the duration of the exposure, so as to develop red or blue color pixels.
References Cited (Backward Citations)
US3934154A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-08-06 | 1994-02-05 | 1994-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-06 | 1998-02-05 | 1998-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-06 | 2002-02-05 | 2002-08-07 | $7700.00 | Window Closed / Lapsed |