US4696418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Developer container for dry-process development
Assignee: Ricoh Co Ltd
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Filing: 1985-08-08
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Granted: 1987-09-29
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Expires: 2005-08-08
Abstract
Abstract A toner container for use with a developing unit of an electrostatographic copier or the like which is rotated to discharge a toner thereoutof is disclosed. A toner agitating member is accommodated in the container in a freely movable manner and shaped and dimensioned to be prevented from slipping out of the container through a slot, or toner outlet, of the container.
Inventors
- 👤 Sigeo Kurotaka
- 👤 Moriyosi Tukano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:41
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/0822; G03G15/0877; G03G15/0881; G03G15/0886; G03G15/0865; G03G15/0867; G03G15/0868; G03G2215/00; G03G2215/06; G03G2215/066; G03G2215/0663; G03G2215/0665; G03G2215/0675; G03G2215/0685; Y; Y10; Y10S; Y10S222/00; Y10S222/01
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
135 words
A developer container for supplying a dry-process developing unit with a developer, comprising: a rotatable cylindrical hollow body accommodating the developer therein; an elongated slot formed through the cylindrical wall of said body in a lengthwise direction of the body for discharging the developer therethrough; and agitating means freely movably disposed in the body for agitating the developer, said agitating means comprising at least one small diameter wire coil having a constant diameter along the length thereof, said coil being dimensioned so as to be prevented from falling out of the container and having a length greater than that of said slot and substantially greater than a diameter of said hollow body, whereby rotation of said hollow body causes rotation of said coil so that said developer is scraped from said wall of said body.
Claim 2
Dependent Claim
135 words
A developer container for supplying a dry-process developing unit with a developer, comprising: a rotatable cylindrical hollow body accommodating the developer therein; an elongated slot formed through the cylindrical wall of said body in a lengthwise direction of the body for discharging the developer therethrough; and agitating means freely movably disposed in the body for agitating the developer, said agitating means comprising at least one small diameter wire coil having a constant diameter along the length thereof, said coil being dimensioned so as to be prevented from falling out of the container and having a length greater than that of said slot and substantially greater than a diameter of said hollow body, whereby rotation of said hollow body causes rotation of said coil so that said developer is scraped from said wall of said body.
Claim 3
Dependent Claim
14 words
A developer container as claimed in claim 1, wherein the developer comprises a toner.
References Cited (Backward Citations)
US1931087A
Cited
US2580132A
Cited
US3339807A
Cited
US3993290A
Cited
US4155328A
Cited
US4450957A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-09-28 | 1991-03-30 | 1991-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-09-28 | 1995-03-30 | 1995-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-09-28 | 1999-03-30 | 1999-09-29 | $7700.00 | Window Closed / Lapsed |