US4371250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Developing processor for printing plates having a spray tube developer agitator
Assignee: Dainippon Screen Manufacturing Co Ltd
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Filing: 1981-10-06
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Granted: 1983-02-01
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Expires: 2001-10-06
Abstract
Abstract Disclosed is an improved processor for printing plates or the like which essentially comprises a lower disposed developer receptacle containing a developer therein and upper disposed spray pipes and in which an arrangement is made such that a presensitized plate for printing or the like to be processed is initially passed through the developer receptacle and then subjected to treatment with the developer sprayed from the spray pipes.
Inventors
- 👤 Masayoshi Wakabayashi
- 👤 Matsuyoshi Taniguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:19
CPC Classifications
G; G03; G03D; G03D3/00; G03D3/08; G03D3/13; G03D3/132; G03D5/00; G03D5/04; G03F; G03F7/00; G03F7/26; G03F7/30
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
129 words
A developing processor for printing plates comprising: a machine housing, a relatively shallow developer tank disposed at a bottom portion within said housing and holding a developer therein, a spray tube provided within said housing above said developer tank and adapted to jet developer onto a printing plate to be processed, and an agitator spray tube having a number of jet holes and disposed in said developer held in said developer tank, said agitator spray tube being connected to said developer tank through a pipe line and a pump and adapted to agitate the developer in the developer tank, wherein an arrangement is made such that said printing plate to be processed is passed through said developer tank and then treated with the developer jetted from said spray tube.
Claim 2
Dependent Claim
129 words
A developing processor for printing plates comprising: a machine housing, a relatively shallow developer tank disposed at a bottom portion within said housing and holding a developer therein, a spray tube provided within said housing above said developer tank and adapted to jet developer onto a printing plate to be processed, and an agitator spray tube having a number of jet holes and disposed in said developer held in said developer tank, said agitator spray tube being connected to said developer tank through a pipe line and a pump and adapted to agitate the developer in the developer tank, wherein an arrangement is made such that said printing plate to be processed is passed through said developer tank and then treated with the developer jetted from said spray tube.
Claim 3
Dependent Claim
26 words
A developing processor as claimed in claim 1, wherein said developer tank is open at its top and recovers the developer sprayed from said spray tube.
Claim 4
Dependent Claim
178 words
A developing processor for printing plates comprising: a machine housing, a relatively shallow developer tank disposed at a bottom portion within said housing and holding a developer therein, a spray tube provided within said housing above said developer tank and adapted to jet developer onto a printing plate to be processed, said developer tank being open at its top and adapted to recover the developer sprayed from said spray tube, and a pair of agitator spray tubes each having a number of jet holes and disposed to oppose each other with space therebetween of which one is disposed in said developer held in said developer tank, while the other being disposed above the surface of the developer in the developer tank, said agitator spray tubes being connected to said developer tank through a pipe line and a pump and adapted to agitate the developer in the developer tank, wherein an arrangement is made such that said printing plate to be processed is passed through said developer tank and then treated with the developer jetted from said spray tube.
Claim 5
Dependent Claim
178 words
A developing processor for printing plates comprising: a machine housing, a relatively shallow developer tank disposed at a bottom portion within said housing and holding a developer therein, a spray tube provided within said housing above said developer tank and adapted to jet developer onto a printing plate to be processed, said developer tank being open at its top and adapted to recover the developer sprayed from said spray tube, and a pair of agitator spray tubes each having a number of jet holes and disposed to oppose each other with space therebetween of which one is disposed in said developer held in said developer tank, while the other being disposed above the surface of the developer in the developer tank, said agitator spray tubes being connected to said developer tank through a pipe line and a pump and adapted to agitate the developer in the developer tank, wherein an arrangement is made such that said printing plate to be processed is passed through said developer tank and then treated with the developer jetted from said spray tube.
Claim 6
Dependent Claim
39 words
A developing processor as claimed in claims 1 or 2, wherein said housing has on a same side thereof a charging opening and a discharging opening respectively for a printing plate to be processed and a processed printing plate.
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) | 1986-01-31 | 1986-08-02 | 1987-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-31 | 1990-08-02 | 1991-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-31 | 1994-08-02 | 1995-02-01 | $7700.00 | Window Closed / Lapsed |