Patent US4613413A successfully refreshed from Google Patents.
US4613413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing aluminum support for lithographic plate
Assignee: Fujifilm Holdings Corp
•
Filing: 1984-05-21
•
Granted: 1986-09-23
•
Expires: 2004-05-21
Abstract
Abstract A process for producing an aluminum support for a lithographic printing plate is described, which comprises jetting a high-pressure liquid from at least one nozzle at a high rate, joining the jetted stream with a slurry containing a fine powder of an abrasive spouted from at least one spout, and directing the resulting mixed stream to strike against a surface of an aluminum plate to carry out cleaning and sandblasting at the same time.
Inventors
- 👤 Akio Uesugi
- 👤 Tsutomu Kakei
- 👤 Makoto Takeuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:38
CPC Classifications
B; B41; B41M; B41M1/00; B41M1/06; B41M1/08; B41N; B41N3/00; B41N3/04; Y; Y10; Y10S; Y10S205/00; Y10S205/921
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
72 words
A process for producing an aluminum support for a lithographic printing plate which comprises jetting a high-pressure liquid from at least one nozzle at a high rate, joining the jetted stream with a slurry containing a fine powder of an abrasive spouted from at least one spout, and directing the resulting mixed stream to strike against a surface of an aluminum plate to carry out cleaning and sandblasting at the same time.
Claim 2
Dependent Claim
72 words
A process for producing an aluminum support for a lithographic printing plate which comprises jetting a high-pressure liquid from at least one nozzle at a high rate, joining the jetted stream with a slurry containing a fine powder of an abrasive spouted from at least one spout, and directing the resulting mixed stream to strike against a surface of an aluminum plate to carry out cleaning and sandblasting at the same time.
Claim 3
Dependent Claim
75 words
A process for producing an aluminum support for a lithographic printing plate which comprises jetting a high-pressure liquid from at least one nozzle at a high rate, joining the jetted stream to a slurry containing a fine powder of an abrasive spouted from at least one spout, directing the resulting mixed stream to strike against a surface of an aluminum plate to carry out cleaning and sandblasting, and thereafter carrying out an anodic oxidation treatment.
Claim 4
Dependent Claim
75 words
A process for producing an aluminum support for a lithographic printing plate which comprises jetting a high-pressure liquid from at least one nozzle at a high rate, joining the jetted stream to a slurry containing a fine powder of an abrasive spouted from at least one spout, directing the resulting mixed stream to strike against a surface of an aluminum plate to carry out cleaning and sandblasting, and thereafter carrying out an anodic oxidation treatment.
Claim 5
Dependent Claim
26 words
A process for producing an aluminum support for a lithographic printing plate as in claim 1 or 2, wherein said high-pressure liquid contains acids or alkalis,
Claim 6
Dependent Claim
24 words
A process for producing an aluminum support for a lithographic printing plate as in claim 1, 2, wherein said slurry contains acids or alkalis.
Claim 7
Dependent Claim
57 words
A process for producing an aluminum support for a lithographic printing plate as in claim 1, wherein the high-pressure liquid is jetted from said at least one nozzle at a flow rate of 31 to 140 m/second and the slurry is spouted from said at least one spout at a flow rate of 2 to 25 m/second.
Claim 8
Dependent Claim
57 words
A process for producing an aluminum support for a lithographic printing plate as in claim 2, wherein the high-pressure liquid is jetted from said at least one nozzle at a flow rate of 31 to 140 m/second and the slurry is spouted from said at least one spout at a flow rate of 2 to 25 m/second.
Claim 9
Dependent Claim
43 words
A process for producing an aluminum support for a lithographic printing plate as in claim 1, wherein the slurry containing a fine powder of an abrasive contains from 5 to 80% by weight fine powder, based on the total weight of the slurry.
Claim 10
Dependent Claim
43 words
A process for producing an aluminum support for a lithographic printing plate as in claim 2, wherein the slurry containing a fine powder of an abrasive contains from 5 to 80% by weight fine powder, based on the total weight of the slurry.
Claim 11
Dependent Claim
43 words
A process for producing an aluminum support for a lithographic printing plate as in claim 1, wherein the slurry containing a fine powder of an abrasive contains from 30 to 50% by weight fine powder, based on the total weight of the slurry.
Claim 12
Dependent Claim
43 words
A process for producing an aluminum support for a lithographic printing plate as in claim 2, wherein the slurry containing a fine powder of an abrasive contains from 30 to 50% by weight fine powder, based on the total weight of the slurry.
Claim 13
Dependent Claim
78 words
A process for producing an aluminum support for a lithographic printing plate as in claim 2, wherein the conditions of carrying out the anodic oxidation treatment are a concentration of electrolyte of from 1 to 80% by weight, a liquid temperature of from 5° to 70° C., a current density of from 0.5 to 60 amperes/dm 2 , an electric voltage of from 1 to 100 V, and an electrolysis time of from 30 seconds to 50 minutes.
Claim 14
Dependent Claim
23 words
A process for producing an aluminum support for a lithographic printing plate as in claim 3, wherein said slurry contains acids or alkalis.
Claim 15
Dependent Claim
104 words
A process for producing a support for a lithographic printing plate which comprises jetting a high-pressure liquid from at least one nozzle at a high rate, joining the jetted stream with a slurry containing a fine powder of an abrasive spouted from at least one spout, and directing the resulting mixed stream to strike against a surface of an aluminum plate, the improvement comprising forming at least two mixed streams having different angle of striking and particle size or the like of the abrasive and successively jetting the mixed streams against a surface of an aluminum support to form the desired rough surface thereon.
Claim 16
Dependent Claim
104 words
A process for producing a support for a lithographic printing plate which comprises jetting a high-pressure liquid from at least one nozzle at a high rate, joining the jetted stream with a slurry containing a fine powder of an abrasive spouted from at least one spout, and directing the resulting mixed stream to strike against a surface of an aluminum plate, the improvement comprising forming at least two mixed streams having different angle of striking and particle size or the like of the abrasive and successively jetting the mixed streams against a surface of an aluminum support to form the desired rough surface thereon.
Claim 17
Dependent Claim
110 words
A process for producing a support for a lithographic printing plate which comprises jetting a high-pressure liquid from at least one nozzle at a high rate, joining the jetted stream with a slurry containing a fine powder of an abrasive spouted from at least one spout, and directing the resulting mixed stream to strike against a surface of an aluminum plate, the improvement comprising forming at least two mixed streams having different angle of striking and particle size of the abrasive, successively jetting the mixed streams against a surface of an aluminum support to form the desired rough surface thereon and then subjecting an anodic oxidation treatment to the surface.
Claim 18
Dependent Claim
110 words
A process for producing a support for a lithographic printing plate which comprises jetting a high-pressure liquid from at least one nozzle at a high rate, joining the jetted stream with a slurry containing a fine powder of an abrasive spouted from at least one spout, and directing the resulting mixed stream to strike against a surface of an aluminum plate, the improvement comprising forming at least two mixed streams having different angle of striking and particle size of the abrasive, successively jetting the mixed streams against a surface of an aluminum support to form the desired rough surface thereon and then subjecting an anodic oxidation treatment to the surface.
Claim 19
Dependent Claim
110 words
A process for producing a support for a lithographic printing plate which comprises jetting a high-pressure liquid from at least one nozzle at a high rate, joining the jetted stream with a slurry containing a fine powder of an abrasive spouted from at least one spout, and directing the resulting mixed stream to strike against a surface of an aluminum plate, the improvement comprising forming at least two mixed streams having different angle of striking and particle size of the abrasive, successively jetting the mixed streams against a surface of an aluminum support to form the desired rough surface thereon and then subjecting a chemical etching treatment to the surface.
Claim 20
Dependent Claim
110 words
A process for producing a support for a lithographic printing plate which comprises jetting a high-pressure liquid from at least one nozzle at a high rate, joining the jetted stream with a slurry containing a fine powder of an abrasive spouted from at least one spout, and directing the resulting mixed stream to strike against a surface of an aluminum plate, the improvement comprising forming at least two mixed streams having different angle of striking and particle size of the abrasive, successively jetting the mixed streams against a surface of an aluminum support to form the desired rough surface thereon and then subjecting a chemical etching treatment to the surface.
Claim 21
Dependent Claim
17 words
An aluminum support for a lithographic printing plate produced by the process of claim 1 or 2.
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) | 1989-09-22 | 1990-03-24 | 1990-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-22 | 1994-03-24 | 1994-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-22 | 1998-03-24 | 1998-09-23 | $7700.00 | Window Closed / Lapsed |