Patent US3689147A successfully refreshed from Google Patents.
US3689147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid-development type electrophotographic apparatus including paper drier means
Assignee: Individual
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Filing: 1971-07-30
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Granted: 1972-09-05
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Expires: 1991-07-30
Abstract
Abstract A drier for drying copying paper in a liquid development type electrophotography apparatus includes a pair of squeegee rollers, and a pair of drier rollers provided next to the squeegee rollers. The peripheral surface of at least one of the drier rollers consists of a liquid-absorbing material. Air is evacuated from within a perforated endless belt to suck paper thereagainst for purposes of transportation. This air is moved past an exposure lamp where the air is heated and dried. The air is then blown against the liquid absorbing material and against copying paper passing therethrough.
Inventors
- 👤 Shigeru Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:41
CPC Classifications
G; G03; G03D; G03D15/00; G03D15/02; G03D15/027; G03G; G03G15/00; G03G15/06; G03G15/10; G03G15/11
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
188 words
A copy paper drier for a liquid development type electrophotographic reproduction apparatus which comprises a light source for the exposure of a photosensitive sheet, a developer tank containing a liquid developer, means for feeding the exposed photosensitive sheet into and through the liquid developer in the developer tank, said means including a perforated endless belt defining an internal chamber and adapted to engage said sheet, a pair of squeegee rollers at the exit of the tank to receive said sheet therefrom, a pair of drier rollers positioned adjacent and downstream of The squeegee rollers for receiving the sheet therefrom, one of said drier rollers including an outer coating of a liquid-absorbing material, the other of the drier rollers being constituted of a hard material and pressing the photosensitive sheet into pressure contact with said one drier roller, and means to evacuate air from the internal chamber of said belt and move the same past said light source to heat and dry the air and to discharge the thusly heated and dried air first against said liquid-absorbing material of said roller and then into contact with said photosensitive sheet.
Claim 2
Dependent Claim
188 words
A copy paper drier for a liquid development type electrophotographic reproduction apparatus which comprises a light source for the exposure of a photosensitive sheet, a developer tank containing a liquid developer, means for feeding the exposed photosensitive sheet into and through the liquid developer in the developer tank, said means including a perforated endless belt defining an internal chamber and adapted to engage said sheet, a pair of squeegee rollers at the exit of the tank to receive said sheet therefrom, a pair of drier rollers positioned adjacent and downstream of The squeegee rollers for receiving the sheet therefrom, one of said drier rollers including an outer coating of a liquid-absorbing material, the other of the drier rollers being constituted of a hard material and pressing the photosensitive sheet into pressure contact with said one drier roller, and means to evacuate air from the internal chamber of said belt and move the same past said light source to heat and dry the air and to discharge the thusly heated and dried air first against said liquid-absorbing material of said roller and then into contact with said photosensitive sheet.
Claim 3
Dependent Claim
39 words
A drier as claimed in claim 1 wherein said evacuating means includes an air duct and said one drier roller has an upper portion which projects into said duct, said sheet passing from said drier rollers into said duct.
Claim 4
Dependent Claim
14 words
A drier as claimed in claim 2 wherein said liquid-absorbing material is blotter paper.
Claim 5
Dependent Claim
37 words
A drier as claimed in claim 2 comprising exit rollers in said duct for engaging said sheet to pass the sheet from said duct, the air passing through said duct with said sheet towards said exit rollers.
Claim 6
Dependent Claim
26 words
A drier as claimed in claim 2 wherein said evacuating means includes a blower having a suction side coupled to the internal chamber of said belt.
Claim 7
Dependent Claim
16 words
A drier as claimed in claim 2 wherein said light source is a high intensity lamp.
Claim 8
Dependent Claim
24 words
A drier as claimed in claim 1 wherein one of said squeegee rollers is metallic and the other of said squeegee rollers is rubber.
Claim 9
Dependent Claim
14 words
A drier as claimed in claim 7 comprising means grounding the metallic squeegee roller.
Claim 10
Dependent Claim
23 words
A drier as claimed in claim 8 wherein said one drier roller includes an inner annular metallic portion covered by said liquid-absorbing material.
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) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |