US3852782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Imaging system
Assignee: Xerox Corp
•
Filing: 1972-06-28
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Granted: 1974-12-03
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Expires: 1992-06-28
Abstract
Abstract A photographic system for exposing a photoreceptor to a light image of an object and including a plurality of light filters, each having a predetermined light-transmission density different from that of the others, for differentially attenuating the light in contiguous sections of the light image, and a transparent element having one surface formed with a plurality of adjacent lenticules, each lenticule focusing the differentially attenuated light image sections onto contiguous segments of the photoreceptor, whereby high light medium tone and shadow information of the object are recorded in the image produced on the photoreceptor.
Inventors
- 👤 R Gundlach
- 👤 L Bean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:28
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/14; G03B21/20; G03B33/00; G03B33/10
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
158 words
A photographic apparatus comprising: a. optical means for producing a light image; b. a photoreceptor; c. light attenuation means varying in light transmission density equally at all light wavelengths in preselected different light density ranges for differentially attenuating said light image in corresponding different light density ranges as said light image is transmitted through said light attenuation means; and d. lenticulated means comprising a surface having a plurality of cylindrically shaped segments for receiving a portion of said differentially attenuated light image and for focusing that portion of the differentially attenuated light image onto a corresponding segment of the photoreceptor in preselected contiguous areas, wherein said apparatus is capable of forming a reproduction of an original image which when viewed in its entirety will show more of the image information present in the original image than a reproduction of the original image which was recorded on the photoreceptor without using the light attenuation means and the lenticulated means.
Claim 2
Dependent Claim
158 words
A photographic apparatus comprising: a. optical means for producing a light image; b. a photoreceptor; c. light attenuation means varying in light transmission density equally at all light wavelengths in preselected different light density ranges for differentially attenuating said light image in corresponding different light density ranges as said light image is transmitted through said light attenuation means; and d. lenticulated means comprising a surface having a plurality of cylindrically shaped segments for receiving a portion of said differentially attenuated light image and for focusing that portion of the differentially attenuated light image onto a corresponding segment of the photoreceptor in preselected contiguous areas, wherein said apparatus is capable of forming a reproduction of an original image which when viewed in its entirety will show more of the image information present in the original image than a reproduction of the original image which was recorded on the photoreceptor without using the light attenuation means and the lenticulated means.
Claim 3
Dependent Claim
12 words
The apparatus as defined in claim 1 wherein said photoreceptor is polychromatic.
Claim 4
Dependent Claim
15 words
The apparatus as defined in claim 2 wherein said photoreceptor comprises a polychromatic photographic film.
Claim 5
Dependent Claim
16 words
The apparatus as defined in claim 2 wherein said photoreceptor comprises a polychromatic photoelectrophoretic imaging suspension.
Claim 6
Dependent Claim
16 words
The apparatus as defined in claim 2 wherein said photoreceptor comprises a panchromatic photoconductive insulating material.
Claim 7
Dependent Claim
12 words
The apparatus as defined in claim 1 wherein said photoreceptor is monochromatic.
Claim 8
Dependent Claim
16 words
The apparatus as defined in claim 6 wherein said photoreceptor comprises black and white photographic film.
Claim 9
Dependent Claim
16 words
The apparatus as defined in claim 6 wherein said photoreceptor comprises a monochromatic photoelectrophoretic imaging suspension.
Claim 10
Dependent Claim
15 words
The apparatus as defined in claim 1 wherein said photoreceptor comprises a photoconductive insulatig material.
Claim 11
Dependent Claim
32 words
The apparatus as defined in claim 1 wherein said light attenuation means comprises at least two discrete light filter means, each provided with one of said preselected different light transmission density ranges.
Claim 12
Dependent Claim
30 words
The apparatus as defined in claim 1 wherein said light attenuation means comprises three discrete light filter means, each provided with one of said preselected different light transmission density range.
Claim 13
Dependent Claim
31 words
The apparatus as defined in claim 1 wherein said light attenuation means compriseS a unitary light filter means continuously varying in light transmission density between two preselected different integral numerical values.
Claim 14
Dependent Claim
40 words
The apparatus as defined in claim 1 wherein said photoreceptor is mounted on the peripheral surface of a rotating drum and said light attenuation means and said lenticulated means are mounted in fixed positions with respect to said rotating drum.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |