Patent US3748995A successfully refreshed from Google Patents.
US3748995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for developing light-sensitive material
Assignee: Kalle GmbH and Co KG
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Filing: 1972-09-07
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Granted: 1973-07-31
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Expires: 1992-09-07
Abstract
Abstract A process and an apparatus for developing light-sensitive material. The apparatus comprises A CHAMBER MEMBER ADAPTED TO CONTAIN A DEVELOPER AND HAVING AN APERTURE IN THE TOP THEREOF, A FIRST PLATE ADAPTED TO SEAL SAID APERTURE, A FIRST MECHANISM FOR MOVING SAID FIRST PLATE INTO AND OUT OF SEALING ENGAGEMENT WITH SAID APERTURE, A TABLE ON THE TOP OF SAID CHAMBER, A SECOND PLATE MOUNTED ABOVE SAID FIRST PLATE AND ADAPTED TO SEAL A LIGHT-SENSITIVE MATERIAL IN SAID APERTURE, AND A SECOND MECHANISM FOR MOVING SAID SECOND PLATE INTO AND OUT OF SEALING ENGAGEMENT.
Inventors
- 👤 H Schroter
- 👤 J Koblo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:17
CPC Classifications
G; G03; G03D; G03D7/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
72 words
A process for developing light-sensitive material which comprises introducing material to be developed between a first plate sealing an opening in a developing chamber and a second plate, pressing the material by means of said second plate against said first plate whereby the material is enclosed, opening said first plate to permit a developer to act upon the material, closing said first plate, and removing said second plate from the developed material.
Claim 2
Dependent Claim
72 words
A process for developing light-sensitive material which comprises introducing material to be developed between a first plate sealing an opening in a developing chamber and a second plate, pressing the material by means of said second plate against said first plate whereby the material is enclosed, opening said first plate to permit a developer to act upon the material, closing said first plate, and removing said second plate from the developed material.
Claim 3
Dependent Claim
90 words
Apparatus for developing light-sensitive material comprising chamber means adapted to contain a developer and having aperture means in the top thereof, first plate means adapted to seal said aperture means, means for moving said first plate means into and out of sealing engagement with said aperture means, table means on the top of said chamber means, second plate means mounted above said first plate means and adapted to seal a light-sensitive material in said aperture means, and means for moving said second plate means into and out of sealing engagement.
Claim 4
Dependent Claim
90 words
Apparatus for developing light-sensitive material comprising chamber means adapted to contain a developer and having aperture means in the top thereof, first plate means adapted to seal said aperture means, means for moving said first plate means into and out of sealing engagement with said aperture means, table means on the top of said chamber means, second plate means mounted above said first plate means and adapted to seal a light-sensitive material in said aperture means, and means for moving said second plate means into and out of sealing engagement.
Claim 5
Dependent Claim
17 words
An apparatus according to claim 2 including magnet means for moving said first and second plate means.
Claim 6
Dependent Claim
18 words
An apparatus according to claim 3 including switch means actuated by said material for controlling said magnet means.
Claim 7
Dependent Claim
17 words
An apparatus according to claim 2 including a source of ammonia gas connected to said chamber means.
Claim 8
Dependent Claim
33 words
An apparatus according to claim 2, wherein the surfaces of the first and second plate means, which surfaces come into contact with the material to be developed, are provided with an elastomer seal.
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) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |