US3903541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for processing printing plates precoated on one side only
Assignee: Individual
•
Filing: 1971-07-27
•
Granted: 1975-09-02
•
Expires: 1991-07-27
Abstract
Abstract This invention relates to a dispensing apparatus for lithographic developer comprising bar means adapted to extend across a printing plate to be developed, slot means in the bottom of said bar means, means for supplying developer under pressure to said slot means, and means for reciprocating said bar means transversely to the direction of plate travel.
Inventors
- 👤 Meister Frederick W Von
- 👤 Jr Eugene J Gaisser
- 👤 Robert C Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:54
CPC Classifications
G; G03; G03D; G03D5/00; G03D5/006; G03F; G03F7/00; G03F7/26; G03F7/30; G03F7/3042
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
127 words
A dispensing apparatus for lithographic processing fluids, comprising; bar means adapted to extend across a printing plate to be processed, having a single outlet means comprising a slot in that side of said bar means facing said plate to be processed and an inlet means in fluid communication with said outlet means, mounted to move perpendicular to the surface of said plate to be processed and normally biased toward the side of said plate to be processed; means for supplying processing fluid, under pressure sufficient to overcome the biasing of said bar means and move said bar means away from the surface of said plate to be processed; and means for reciprocating said bar means transverseLy to the direction of travel of said plate to be processed.
Claim 2
Dependent Claim
127 words
A dispensing apparatus for lithographic processing fluids, comprising; bar means adapted to extend across a printing plate to be processed, having a single outlet means comprising a slot in that side of said bar means facing said plate to be processed and an inlet means in fluid communication with said outlet means, mounted to move perpendicular to the surface of said plate to be processed and normally biased toward the side of said plate to be processed; means for supplying processing fluid, under pressure sufficient to overcome the biasing of said bar means and move said bar means away from the surface of said plate to be processed; and means for reciprocating said bar means transverseLy to the direction of travel of said plate to be processed.
Claim 3
Dependent Claim
20 words
A dispensing apparatus according to claim 1 including spring means biasing said bar means toward a plate to be developed.
Claim 4
Dependent Claim
16 words
A dispensing apparatus according to claim 1 including spreader blade means secured to said bar means.
Claim 5
Dependent Claim
25 words
A dispensing apparatus in accordance with claim 1 wherein the bar means is biased toward the plate to be processed by means of a spring.
References Cited (Backward Citations)
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Cited
US2956494A
Cited
US3081687A
Cited
US3066047A
Cited
US3338149A
Cited
US3354807A
Cited
US3593641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-01 | 1979-03-03 | 1979-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-01 | 1983-03-03 | 1983-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-01 | 1987-03-03 | 1987-09-02 | $7700.00 | Window Closed / Lapsed |