US3961366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for exposing a light-sensitive layer
Assignee: Wagner und Cie AG
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Filing: 1974-06-10
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Granted: 1976-06-01
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Expires: 1994-06-10
Abstract
Abstract An apparatus for exposing a light-sensitive layer employed for the manufacture of reproductions of black-and-white or colored patterns, wherein the image of the pattern which has been projected onto a support is taken or scanned by means of an electronic camera and stored on a recording carrier. The light-sensitive layer initially is purely optically exposed with the image of the pattern. The light-sensitive layer is also additionally exposed with the stored image for correction of contrast and/or color shade.
Inventors
- 👤 Paul Weishaupt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:55
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/72; G03B15/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
211 words
An apparatus for exposing a light-sensitive layer serving to make reproductions of black-and-white or color patterns comprising in combination: a support table for the light sensitive layer; a purely optical projection means for projecting a first image of a pattern onto the light-sensitive layer when positioned on the support table; an electronic camera means for scanning the projected pattern image and for generating video signals of the image of the pattern projected onto the light-sensitive layer; a video recording means operatively connected with the electronic camera means for storing the video signals on a recording carrier; control means operatively connected with said video recording means for selecting a stored video signal corresponding to a second image to be projected onto the light-sensitive layer; and an electro-optical projection means receiving said selected stored video signal from said video recording means for projecting said second image of the pattern onto the light-sensitive layer to be exposed, to thereby correct the contrast of color shades or both of the first projected pattern image; said purely optical projection means and said electro-optical projection means being positionally disposed such that said first and second images of the pattern projected onto the light-sensitive layer by said purely optical projection means and said electro-optical projection means substantially coincide.
Claim 2
Independent Claim
211 words
An apparatus for exposing a light-sensitive layer serving to make reproductions of black-and-white or color patterns comprising in combination: a support table for the light sensitive layer; a purely optical projection means for projecting a first image of a pattern onto the light-sensitive layer when positioned on the support table; an electronic camera means for scanning the projected pattern image and for generating video signals of the image of the pattern projected onto the light-sensitive layer; a video recording means operatively connected with the electronic camera means for storing the video signals on a recording carrier; control means operatively connected with said video recording means for selecting a stored video signal corresponding to a second image to be projected onto the light-sensitive layer; and an electro-optical projection means receiving said selected stored video signal from said video recording means for projecting said second image of the pattern onto the light-sensitive layer to be exposed, to thereby correct the contrast of color shades or both of the first projected pattern image; said purely optical projection means and said electro-optical projection means being positionally disposed such that said first and second images of the pattern projected onto the light-sensitive layer by said purely optical projection means and said electro-optical projection means substantially coincide.
Claim 3
Dependent Claim
45 words
The apparatus as defined in claim 1, wherein the electronic camera means comprises color filter means at least for the primary colors for the storage of a number of recordings which can be used for the correction of the colors of the projected pattern image.
Claim 4
Dependent Claim
25 words
The apparatus as defined in claim 1, wherein the purely optical projection means is constructed for the projection of photographic slide patterns and/or non-transparent patterns.
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) | 1979-06-01 | 1979-12-01 | 1980-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-01 | 1983-12-01 | 1984-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-01 | 1987-12-01 | 1988-06-01 | $7700.00 | Window Closed / Lapsed |