Patent US3851965A successfully refreshed from Google Patents.
US3851965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning apparatus for electrocopying machines
Assignee: Katsuragawa Electric Co Ltd
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Filing: 1973-05-03
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Granted: 1974-12-03
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Expires: 1993-05-03
Abstract
Abstract A rotary cleaning device utilized to remove toner remaining on a rotary photosensitive drum after transfer printing comprises a plurality of resilient members which are assembled into a cylindrical body, a fabric cover encircling the resilient members and having a peripheral length longer than that of the cylindrical body so that portions of the fabric cover are locally folded back on the surface of the cylindrical body, an air suction nozzle and a spacer rod located between the suction port of the nozzle and the cylindrical body such that the folded back portions of the fabric cover are blown away from the periphery of the cylindrical body by the air stream flowing into the air suction nozzle.
Inventors
- 👤 M Furuichi
- 👤 N Akiba
- 👤 S Kudo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:01
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/0005; G03G21/0035
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
153 words
Cleaning apparatus for cleaning residual toner from an image forming surface of an electrocopying machine comprising a cylindrical body made up of a plurality of resilient circumferentially adjacent segments, a fabric cover over the outer periphery of said cylindrical body, said fabric cover having a peripheral length longer than that of said cylindrical body, means for securing portions of said fabric cover between said adjacent segments so that portions of said fabric cover are folded back on the surface of said cylindrical body, an air suction nozzle oriented generally in the radial direction of said cylindrical body and having a suction port adjacent thereto, and a spacer rod located between said suction port and said cylindrical body, whereby, in use, said folded back portions of said fabric cover are blown away from the periphery of said cylindrical body and toward said spacer rod by an air stream flowing into said air suction port.
Claim 2
Dependent Claim
153 words
Cleaning apparatus for cleaning residual toner from an image forming surface of an electrocopying machine comprising a cylindrical body made up of a plurality of resilient circumferentially adjacent segments, a fabric cover over the outer periphery of said cylindrical body, said fabric cover having a peripheral length longer than that of said cylindrical body, means for securing portions of said fabric cover between said adjacent segments so that portions of said fabric cover are folded back on the surface of said cylindrical body, an air suction nozzle oriented generally in the radial direction of said cylindrical body and having a suction port adjacent thereto, and a spacer rod located between said suction port and said cylindrical body, whereby, in use, said folded back portions of said fabric cover are blown away from the periphery of said cylindrical body and toward said spacer rod by an air stream flowing into said air suction port.
Claim 3
Dependent Claim
17 words
Apparatus as claimed in claim 1 wherein said fabric cover is impregnated with liquid electric insulating material.
Claim 4
Dependent Claim
16 words
Apparatus as claimed in claim 1 wherein said resilient segments are made of foamed elastic material.
Claim 5
Dependent Claim
57 words
Apparatus as claimed in claim 1 wherein said fabric cover comprises a plurality of fabric panels, each panel covering the outer periphery of a corresponding one of said segments, the peripheral length of each of said panels being longer than that of its corresponding segment so that a portion of each fabric panel is locally folded back.
Claim 6
Dependent Claim
62 words
Apparatus as claimed in claim 4 including a rotary shaft supporting said cylindrical body, and wherein said body includes a sleeve mounted on said shaft having segments corresponding to said resilient segments spaced radially inwardly thereof, wherein each of said fabric panels surrounds one of said sleeve segments and its corresponding resilient segment and is clamped between said sleeve and said shaft.
Claim 7
Dependent Claim
110 words
Apparatus as claimed in claim 1 in combination with a rotatable drum having an image forming surface thereon, means for rotating said drum and said cylindrical body in opposite directions, and, positioned in sequence about said drum in the direction of rotation thereof ahead of said cleaning apparatus, means for forming a latent image on said image forming surface, means for developing said latent image by applying toner thereon, and means for transfer printing said latent image onto a recording paper, and further including means for urging said cylindrical body against the image forming surface of said drum to remove residual toner therefrom after transfer printing of said latent image.
Claim 8
Dependent Claim
60 words
A combination as claimed in claim 6 wherein said cylindrical body is also utilized for removing recording paper from the image forming surface on said rotatable drum prior to cleaning, and further including a conveyor between said cylindrical body and said transfer printing means for conveying a recording paper removed by said cylindrical body away from said image forming surface.
Claim 9
Dependent Claim
31 words
A combination as claimed in claim 7 including a corona discharge unit disposed between said transfer printing means and said cylindrical body to neutralize the electric charge on said recording paper.
References Cited (Backward Citations)
US3580673A
Cited
US3706108A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |