US3827802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microfilm coding apparatus
Assignee: Agfa Gevaert AG
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Filing: 1973-02-07
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Granted: 1974-08-06
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Expires: 1993-02-07
Abstract
Abstract A microfilming apparatus wherein one of two transparent plates which define the image plane for originals carries a row of enclosed electric lamps serving to encode information on microfilm during exposure of successive originals onto successive microfilm frames. The encoded information facilitates the finding of selected microfilm frames. The plates are movable from operative to exposed positions to be accessible for cleaning. The number and distribution of lamps which light up to encode information on microfilm is controlled by a programming unit which can be actuated by hand or automatically, either in response to detection of successive originals in the image plane or in response to detection of signal generating sheets which are fed into the image plane alternately with successive originals. A detector scans the thickness and/or the conductivity of signal generating sheets and causes the programming unit to change the number and/or distribution of lamps which are lighted simultaneously or substantially simultaneously with the exposure of successive originals onto the microfilm.
Inventors
- 👤 J Pfeifer
- 👤 W Hofmann
- 👤 K Dietrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:07
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/24; G03B17/245; G03B27/00; G03B27/32; G03B27/52; G03B27/521; G03B2217/00; G03B2217/24; G03B2217/242; G03B2217/243
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
168 words
Apparatus for coding microfilm simultaneously with exposure of sheet-like originals onto successive microfilm frames, comprising a housing; guide means in said housing and defining an image plane for successive originals, said guide means comprising two parallel light transmitting plates normally located at the opposite sides of said image plane; a plurality of light sources provided in the region of said image plane and operable to emit light and to be thereby imaged on microfilm whereby the images of operated light sources constitute on microfilm encoded information identifying the adjacent images of originals, said light sources being mounted on one of said plates and further comprising pivot means provided in said housing and supporting said plates for pivotal movement between operative positions in which said plates are located at the opposite sides of said image plane and second positions in which said plates and said light sourCes are readily accessible; and programming means actuatable to select the light sources which are operated to identify the images of successive originals.
Claim 2
Dependent Claim
168 words
Apparatus for coding microfilm simultaneously with exposure of sheet-like originals onto successive microfilm frames, comprising a housing; guide means in said housing and defining an image plane for successive originals, said guide means comprising two parallel light transmitting plates normally located at the opposite sides of said image plane; a plurality of light sources provided in the region of said image plane and operable to emit light and to be thereby imaged on microfilm whereby the images of operated light sources constitute on microfilm encoded information identifying the adjacent images of originals, said light sources being mounted on one of said plates and further comprising pivot means provided in said housing and supporting said plates for pivotal movement between operative positions in which said plates are located at the opposite sides of said image plane and second positions in which said plates and said light sourCes are readily accessible; and programming means actuatable to select the light sources which are operated to identify the images of successive originals.
Claim 3
Dependent Claim
29 words
Apparatus as defined in claim 1, wherein said light sources are electric lamps and further comprising flexible cable means including conductor means connecting said lamps with said programming means.
Claim 4
Dependent Claim
31 words
Apparatus as defined in claim 1, further comprising cooperating detent means provided in said housing and on said light transmitting plates for releasably holding the latter in said operative positions thereof.
Claim 5
Dependent Claim
60 words
Apparatus as defined in claim 1, wherein said pivot means defines for said plates a pivot axis which is laterally adjacent to and located without said image plane, said plates having handle means remote from said pivot means and said housing and said handle means being provided with cooperating detent means for releasably holding said plates in said operative positions.
Claim 6
Dependent Claim
33 words
Apparatus as defined in claim 1, wherein said programming means comprises a plurality of counter means adjustable to select different light sources to be operated in response to actuation of said programming means.
Claim 7
Dependent Claim
16 words
Apparatus as defined in claim 5, further comprising manually operated means for adjusting said counter means.
Claim 8
Dependent Claim
16 words
Apparatus as defined in claim 5, further comprising selector switch means for adjusting said counter means.
Claim 9
Dependent Claim
17 words
Apparatus as defined in claim 7, further comprising manually operable means for rotating said selector switch means.
Claim 10
Dependent Claim
19 words
Apparatus as defined in claim 7, further comprising cable means connecting said selector switch means with said counter means.
Claim 11
Dependent Claim
15 words
Apparatus as defined in claim 9, wherein said selector switch means is operable by hand.
Claim 12
Dependent Claim
34 words
Apparatus as defined in claim 5, further comprising detector means arranged to scan said image plane for the presence of originals and to adjust said counter means in response to detection of successive originals.
Claim 13
Dependent Claim
16 words
Apparatus as defined in claim 11, wherein said detector means comprises at least one photosensitive detector.
Claim 14
Dependent Claim
30 words
Apparatus as defined in claim 5, wherein said programming means further comprises signal generating means arranged to produce a detectable signal in response to each adjustment of said counter means.
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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) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |