US4559295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for regenerating solution for developing or peeling alkali-type photosensitive film
Assignee: Resonac Corp
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Filing: 1985-02-04
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Granted: 1985-12-17
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Expires: 2005-02-04
Abstract
Abstract A developing or peeling solution for developing or imagewisely peeling an alkali-type photosensitive film containing a suspension of released photosensitive film is regenerated by introducing one or more reagents and a gas for depositing the suspension in floating state and removing the floated deposit by a skimmer from the developing or peeling solution, while a part or whole of the resulting treated solution is taken out of the system.
Inventors
- 👤 Yoshiaki Tomisawa
- 👤 Toshio Takeuchi
- 👤 Keijiro Honda
- 👤 Susumu Takahashi
- 👤 Seiji Kinoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:42
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/26; G03F7/30; G03F7/3092
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
99 words
A process for developing or imagewisely peeling an alkali-type photosensitive film which comprises developing or imagewisely peeling an alkali-type photosensitive film with a developing or peeling solution, taking off the developing or peeling solution containing a released photosensitive film suspension from a developing or peeling device, introducing one or more reagents and a gas into the developing or peeling solution to deposit the suspension in floc state, removing the flocculated deposit in floating state out of the developing or peeling solution, and taking a part or whole of the resulting treated developing or peeling solution out of the system.
Claim 2
Dependent Claim
99 words
A process for developing or imagewisely peeling an alkali-type photosensitive film which comprises developing or imagewisely peeling an alkali-type photosensitive film with a developing or peeling solution, taking off the developing or peeling solution containing a released photosensitive film suspension from a developing or peeling device, introducing one or more reagents and a gas into the developing or peeling solution to deposit the suspension in floc state, removing the flocculated deposit in floating state out of the developing or peeling solution, and taking a part or whole of the resulting treated developing or peeling solution out of the system.
Claim 3
Dependent Claim
19 words
A process according to claim 1, wherein the reagent for depositing the suspension is at least a flocculating agent.
Claim 4
Dependent Claim
20 words
A process according to claim 1, wherein the reagents are a pH controlling agent, an adsorbent and a foaming agent.
Claim 5
Dependent Claim
18 words
A process according to claim 1, wherein the gas for floating the deposited suspension is a bubbling air.
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) | 1988-12-16 | 1989-06-17 | 1989-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-16 | 1993-06-17 | 1993-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-16 | 1997-06-17 | 1997-12-17 | $7700.00 | Window Closed / Lapsed |