Patent US3589810A successfully refreshed from Google Patents.
US3589810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processing device for photocopying machine
Assignee: Ricoh Co Ltd
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Filing: 1968-12-19
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Granted: 1971-06-29
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Expires: 1988-12-19
Abstract
Abstract A dry-type processing device for a photocopying machine having photosensitive paper moving on an endless belt through an operational area for exposure to developing gas passing out of an adjoining chamber. Rollers are provided at either end of the operational area in rolling contact with the endless belt and in sliding contact with the chamber.
Inventors
- 👤 Minoru Umahashi
- 👤 Kenzou Ariyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:25
CPC Classifications
G; G03; G03D; G03D7/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
114 words
A dry-type processing device for processing photosensitive material in a photocopying machine comprising an operational chamber having an operational developing area along one side thereof; an endless belt mounted on rollers and positioned to be driven in a predetermined direction adjacent to said developing area and having the photosensitive material positioned thereon; a pair of sealing rollers located between said operational chamber and said endless belt, said sealing rollers being in contact with and driven by said endless belt, each sealing roller located, respectively, at one end of said developing area; and a pair of sliding contact members mounted on said operational chamber and located, respectively, in contact with one of said sealing rollers.
Claim 2
Dependent Claim
114 words
A dry-type processing device for processing photosensitive material in a photocopying machine comprising an operational chamber having an operational developing area along one side thereof; an endless belt mounted on rollers and positioned to be driven in a predetermined direction adjacent to said developing area and having the photosensitive material positioned thereon; a pair of sealing rollers located between said operational chamber and said endless belt, said sealing rollers being in contact with and driven by said endless belt, each sealing roller located, respectively, at one end of said developing area; and a pair of sliding contact members mounted on said operational chamber and located, respectively, in contact with one of said sealing rollers.
Claim 3
Dependent Claim
28 words
A dry-type processing device according to claim 1, in which blower means is provided to force developing gas to flow along said developing area in said predetermined direction.
Claim 4
Dependent Claim
18 words
A dry-type processing device according to claim 1, in which said sliding contact members are formed of Teflon.
References Cited (Backward Citations)
US3174420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |