Patent US3613701A successfully refreshed from Google Patents.
US3613701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for cleaning developed electrostatic photographic copy sheet
Assignee: Ricoh Co Ltd
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Filing: 1969-05-14
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Granted: 1971-10-19
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Expires: 1989-05-14
Abstract
Abstract A device for cleaning excess toner from an electrostatic photographic copy sheet that is advanced on an upward incline over a supply chamber that discharges cleaning liquid over the copy sheet to be collected in a storage chamber. Rollers are provided to advance the copy sheet, and the rollers act as a weir to retard the liquid flow and improve the cleaning.
Inventors
- 👤 Sadanao Ando
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:52
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/10; G03G15/11
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
192 words
A device for cleaning excess toner from an electrostatic photographic copy sheet comprising a cleaning liquid chamber having side portions defining a supply reservoir and a receiving storage chamber; a guide plate on which the copy paper is advanced, said guide plate located above said liquid chamber and inclined relative thereto; said guide plate having the inclination directed upwardly in a linear relationship from one side of the storage chamber to the other; roller means associated with said guide plate for feeding said copy sheet for advancement therealong, said roller means comprising two sets of rollers, a first set located above said storage chamber and a second set located above said supply reservoir at a higher level than said first set; cleaning discharge outlet means located above said guide plate, said discharge outlet means having a connection to receive cleaning liquid from said supply reservoir and discharge the liquid to flow onto said copy sheet and into said storage chamber; and said first set of rollers positioned to receive said liquid discharge thereagainst and act as a weir to delay the liquid flow and thereby increase the cleaning effect of the liquid.
Claim 2
Independent Claim
192 words
A device for cleaning excess toner from an electrostatic photographic copy sheet comprising a cleaning liquid chamber having side portions defining a supply reservoir and a receiving storage chamber; a guide plate on which the copy paper is advanced, said guide plate located above said liquid chamber and inclined relative thereto; said guide plate having the inclination directed upwardly in a linear relationship from one side of the storage chamber to the other; roller means associated with said guide plate for feeding said copy sheet for advancement therealong, said roller means comprising two sets of rollers, a first set located above said storage chamber and a second set located above said supply reservoir at a higher level than said first set; cleaning discharge outlet means located above said guide plate, said discharge outlet means having a connection to receive cleaning liquid from said supply reservoir and discharge the liquid to flow onto said copy sheet and into said storage chamber; and said first set of rollers positioned to receive said liquid discharge thereagainst and act as a weir to delay the liquid flow and thereby increase the cleaning effect of the liquid.
Claim 3
Dependent Claim
60 words
A device according to claim 1 in which said guide plate is curved in its lateral dimension with its longitudinal center portion having the closest spacing to said liquid chamber, and said discharge means comprises a pair of outlets, each outlet positioned respectively on each side of said guide plate above guide plate areas spaced farthest from said liquid chamber.
Claim 4
Dependent Claim
21 words
A device according to claim 1 in wHich said discharge outlet means comprises a pipe having a plurality of holes therein.
Claim 5
Dependent Claim
33 words
A device according to claim 1 in which said guide plate is positioned above both said supply reservoir and said storage chamber, and said discharge outlet means is located above said storage chamber.
Claim 6
Dependent Claim
20 words
A device according to claim 4 in which drying means is located above said guide plate and said supply chamber.
Claim 7
Dependent Claim
29 words
A device according to claim 1 in which said guide plate is positioned solely above said storage chamber, and said discharge outlet means is located above said storage chamber.
Claim 8
Dependent Claim
21 words
A device according to claim 6 in which said guide plate is inclined transversely relative to the longitudinal direction of advancement.
References Cited (Backward Citations)
US3169887A
Cited
US3356497A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |