US3560084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exposure device for copying apparatus
Assignee: Lumoprint Zindler KG and Co GmbH
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Filing: 1968-04-25
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Granted: 1971-02-02
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Expires: 1988-04-25
Abstract
Abstract AN EXPOSURE DEVICE FOR A PHOTOGRAPHIC COPYING APPARATUS IN WHICH A FIBER-OPTICAL ARRAY IS SPACED FROM THE IMAGE SOURCE. THE OPTICAL FIBERS ARE PROVIDED WITH LIGHTABSORPTIVE LAYERS AT THE INCIDENT-LIGHT END SUCH THAT THE DISTANCE BETWEEN THE IMAGE SOURCE AND THE IMAGE PLANE ACROSS THE FIBER OPTICAL NETWORK IN MILLIMETERS CORRESPONDS TO THE LENGTH OF THE ABSORPTIVE SHEATH OR LAYER ALONG THE OPTICAL FIBER, MULTIPLIED BY THE MAXIMUM TOLERABLE LACK OF DEFINITION IN MICRONS AND DIVIDED BY THE CROSS-SECTION OF THE FIBER PARALLEL TO THE MEASUREMENT OF THE LACK OF DEFINITION IN MICRONS.
Inventors
- 👤 Walter Limberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:35
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/50; G03B27/52; G03B27/522; G03B27/525; G03B27/528; G03G; G03G15/00; G03G15/04; G03G15/0409; G03G15/22; G03G15/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |