US4288521A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of photosensitive plates for printing
Assignee: Konica Minolta Inc
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Filing: 1980-01-24
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Granted: 1981-09-08
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Expires: 2000-01-24
Abstract
Abstract There is provided a process for the production of a photosensitive plate for printing which comprises providing a given amount of a fine powder having a constant directional size of 0.5-40 μ from a dust supplier directly or via a distributor to a cyclone, feeding the said powder together with a small volume of air from the bottom of said cyclone, uniformly dispersing and adhering the so flowed fine powder onto the surface of a continuously running photosensitive plate for printing.
Inventors
- 👤 Hiroshi Kojima
- 👤 Kunio Ito
- 👤 Masami Akiyama
- 👤 Takeshi Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:15
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/09; G03F7/115; G03C; G03C5/00; G03C5/08; Y; Y10; Y10S; Y10S430/00; Y10S430/136; Y10S430/151; Y10S430/162
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
103 words
A process for the production of a photosensitive plate for printing which comprises: feeding a volume of air containing a given amount of a fine powder having a constant directional size of 0.5-40μ to at least one cyclone; downwardly discharging from the bottom of said cyclone said given amount of said fine powder together with a volume of air which is small relative to the volume of air fed to said cyclone; and uniformly dispersing and adhering the discharged fine powder onto the surface of the side of a photosensitive plate which contains a photosensitive layer which is continuously moving past said cyclone.
Claim 2
Dependent Claim
103 words
A process for the production of a photosensitive plate for printing which comprises: feeding a volume of air containing a given amount of a fine powder having a constant directional size of 0.5-40μ to at least one cyclone; downwardly discharging from the bottom of said cyclone said given amount of said fine powder together with a volume of air which is small relative to the volume of air fed to said cyclone; and uniformly dispersing and adhering the discharged fine powder onto the surface of the side of a photosensitive plate which contains a photosensitive layer which is continuously moving past said cyclone.
Claim 3
Dependent Claim
74 words
The process of claim 1, wherein said powder is a heat-depositable fine powder and is supplied in a given amount to an ejector from a powder supplier; and said volume of air fed to said cyclone is air under pressure which is first fed to said ejector simultaneously with said fine powder to disperse said fine powder in said air under pressure, said air with said dispersed fine powder being fed to said cyclone.
Claim 4
Dependent Claim
32 words
The process of claim 1 further comprising heating said photosensitive plate to fuse said fine powder onto said surface of said photosensitive plate after said fine powder is dispersed onto said surface.
Claim 5
Dependent Claim
23 words
The process of claim 3 wherein the heating is effected by contacting said side of the said photosensitive plate with a heating roll.
Claim 6
Dependent Claim
26 words
The process of any one of claims 1-4 wherein said volume of air containing said fine powder is fed directly to said at least one cyclone.
Claim 7
Dependent Claim
28 words
The process of any one of claims 1-4 wherein said volume of air containing said fine powder is fed to said at least one cyclone via a distributor.
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) | 1984-09-07 | 1985-03-09 | 1985-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-07 | 1989-03-09 | 1989-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-07 | 1993-03-09 | 1993-09-08 | $7700.00 | Window Closed / Lapsed |