Patent US4899690A successfully refreshed from Google Patents.
US4899690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container for electrostatographic toner or developer
Assignee: Seiko Epson Corp
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Filing: 1988-08-15
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Granted: 1990-02-13
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Expires: 2008-08-15
Abstract
Abstract A two-compartment container for supplying toner to an electrostatographic development station has a first compartment for containing and supplying fresh toner or toner mixed with carrier to the station and a second compartment for receiving and containing spent developer for disposal. When the container is mounted in a toner supplying position with respect to a development station, an opening in the second compartment mates with an opening in the station through which developer overflows. A door covering the opening to the second compartment is automatically openable by appropriate means associated with the station in response to placing the container in the toner supplying position.
Inventors
- 👤 Frank Hacknauer
- 👤 Kenneth D. Corby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:18
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/0822; G03G15/0844; G03G15/0865; G03G15/0867; G03G15/0868; G03G15/0877; G03G15/0881; G03G15/0886; G03G2215/00; G03G2215/06; G03G2215/066; G03G2215/068; G03G2215/0685
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
107 words
A two-compartment container for supplying toner to an electrostatographic developing station of the type using a developer which is a mixture of toner particles and carrier particles and which station has means for receiving the container in a toner supplying position and has an egress for spent developer, said container having means cooperable with such a receiving means for positioning said container in a toner supplying position; a first compartment for containing at least fresh toner; and a second compartment having an ingress mateable with a spent developer egress of a developing station for receiving spent developer therethrough when said container is in its toner supplying position.
Claim 2
Dependent Claim
107 words
A two-compartment container for supplying toner to an electrostatographic developing station of the type using a developer which is a mixture of toner particles and carrier particles and which station has means for receiving the container in a toner supplying position and has an egress for spent developer, said container having means cooperable with such a receiving means for positioning said container in a toner supplying position; a first compartment for containing at least fresh toner; and a second compartment having an ingress mateable with a spent developer egress of a developing station for receiving spent developer therethrough when said container is in its toner supplying position.
Claim 3
Dependent Claim
19 words
A two-compartment container according to claim 1 further including a door movable between positions closing and opening said ingress.
Claim 4
Dependent Claim
38 words
A two-compartment container according to claim 2 further including means cooperable with said station for moving said door from its closing position to its opening position in response to placement of said container in its toner supplying position.
Claim 5
Dependent Claim
60 words
A two-compartment container according to claim 1 wherein said first compartment is defined by an upper container portion, said positioning means is located at a bottom wall of said upper container portion when said container is in its toner supplying position, and said second compartment is positioned below said positioning means when said container is in its toner supplying position.
Claim 6
Dependent Claim
79 words
A two-compartment container according to claim 4 wherein said bottom wall is covered by a removable cover and said positioning means includes at least two flanges associated with said bottom wall, which flanges are shaped to slidingly mate with grooves in said station to position said container, and said container further includes a door movable from a position closing said ingress to a position opening said ingress in response to moving of said container to its toner supplying position.
Claim 7
Dependent Claim
95 words
A container for spent developer usable with an electrostatographic developing station having means for receiving such a container and an egress for spent developer, said container including a compartment for receiving spent developer, said compartment having an ingress mateable with an egress of a station in which said container is received, a door movable between positions closing and opening said ingress, and means cooperable with said station for moving said door from its closing position to its opening position in response to positioning said ingress in mating relationship with the egress of a receiving station.
Claim 8
Dependent Claim
95 words
A container for spent developer usable with an electrostatographic developing station having means for receiving such a container and an egress for spent developer, said container including a compartment for receiving spent developer, said compartment having an ingress mateable with an egress of a station in which said container is received, a door movable between positions closing and opening said ingress, and means cooperable with said station for moving said door from its closing position to its opening position in response to positioning said ingress in mating relationship with the egress of a receiving station.
Claim 9
Dependent Claim
25 words
A container according to claim 6 including means for attaching said container to a toner supplying container for unitary mounting with respect to said station.
Claim 10
Dependent Claim
59 words
A container according to claim 6 wherein said means for moving said door includes at least one finger connected to said door and projecting from said container, said finger having a cam surface engageable with said station to cam said door to an open position and said container further includes resilient means urging said door toward a closed position.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-02-12 | 1993-08-14 | 1994-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-12 | 1997-08-14 | 1998-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-12 | 2001-08-14 | 2002-02-13 | $7700.00 | Window Closed / Lapsed |