Patent US4451139A successfully refreshed from Google Patents.
US4451139A
Expired / Lapsed
US
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Cleaning apparatus for photoconductive element
Assignee: Ricoh Co Ltd
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Filing: 1982-08-23
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Granted: 1984-05-29
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Expires: 2002-08-23
Abstract
Abstract A cleaning apparatus for a photoconductive element includes a cleaning member engaged with the surface of the photoconductive element to remove residual toner therefrom, a toner collecting member for collecting the toner removed by the cleaning member, and a casing for accommodating such members thereinside. The casing is formed with a guide section which permits the cleaning apparatus to be bodily moved in a direction perpendicular to an intended direction of movement of the photoconductive element. The guide section is positioned above the center of gravity position of the casing and farther from the photoconductive element than the center of gravity position. With this arrangement, the casing can be loaded and unloaded without any damage to the photoconductive element.
Inventors
- 👤 Nobuyuki Yanagawa
- 👤 Shinichi Kamiyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:06
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/0005; G03G21/007
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
95 words
A cleaning apparatus for a photoconductive element, comprising: cleaning means for removing toner particles remaining on the photoconductive element in contact therewith; toner collecting means for collecting the toner particles removed by the cleaning means; a casing accommodating the cleaning means and toner collecting means thereinside and movable in a direction perpendicular to an intended direction of movement of the photoconductive element; and guide means formed in the casing at a location which is above the center of gravity position of the casing and farther from the photoconductive element than the center of gravity position.
Claim 2
Dependent Claim
95 words
A cleaning apparatus for a photoconductive element, comprising: cleaning means for removing toner particles remaining on the photoconductive element in contact therewith; toner collecting means for collecting the toner particles removed by the cleaning means; a casing accommodating the cleaning means and toner collecting means thereinside and movable in a direction perpendicular to an intended direction of movement of the photoconductive element; and guide means formed in the casing at a location which is above the center of gravity position of the casing and farther from the photoconductive element than the center of gravity position.
Claim 3
Dependent Claim
28 words
A cleaning apparatus as claimed in claim 1, in which the cleaning means comprises a fur brush and a cleaning blade which is supported by a blade holder.
Claim 4
Dependent Claim
36 words
A cleaning apparatus as claimed in claim 2, in which the blade holder is rotatably connected with a support member by a screw, said support member being pivotable about a predetermined axis toward the photoconductive element.
Claim 5
Dependent Claim
23 words
A cleaning apparatus as claimed in claim 1, in which the casing is made up of a fixed part and a movable part.
Claim 6
Dependent Claim
56 words
A cleaning apparatus as claimed in claim 4, in which the guide means comprises a channel formed in the fixed part of the casing and a hook formed in the movable part of the same, said hook being engaged in the channel so that the movable part is swingably and removably suspended from the fixed part.
Claim 7
Dependent Claim
18 words
A cleaning apparatus as claimed in claim 1, in which the toner collecting means comprises a discharge coil.
Claim 8
Dependent Claim
28 words
A cleaning apparatus as claimed in claim 1, further comprising a sealing member for preventing the collected toner particles from being scattered to the outside of the casing.
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) | 1987-05-29 | 1987-11-28 | 1988-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-29 | 1991-11-28 | 1992-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-29 | 1995-11-28 | 1996-05-29 | $7700.00 | Window Closed / Lapsed |