Patent US4506975A successfully refreshed from Google Patents.
US4506975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning device
Assignee: Konica Minolta Inc
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Filing: 1982-12-13
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Granted: 1985-03-26
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Expires: 2002-12-13
Abstract
Abstract A cleaning device in which toner remaining on an image reproducing support through an electrostatic reproducing process is cleaned by a fur brush and then the toner having adhered to the fur brush is recovered by an electrically biased roller, the fur brush having a brush core formed of a conductive material and the brush core being grounded or biased with the polarity opposite to that of bias voltage applied to the roller. The fur brush is formed as a conductive brush and grounded through a non-linear resistance element. The fur brush is formed of a semiconductive material.
Inventors
- 👤 Katsuhiro Shukuri
- 👤 Shigeru Inowa
- 👤 Kiyoaki Kawamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:36
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/0005; G03G21/0047; G03G21/0035; G03G2221/00; G03G2221/0005
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
81 words
A cleaning device for removing toner remaining on an image reproducing surface of an electrostatic reproducing member comprising a rotatable fur brush in contact with the toner-bearing surface of said electrostatic reproducing member, and an electrically biased roller which is made of an electrically conductive body and is disposed in moving contact with said fur brush for removing toner therefrom by electrical attraction, said fur brush having a brush core formed of a conductive material and said brush core being grounded.
Claim 2
Dependent Claim
81 words
A cleaning device for removing toner remaining on an image reproducing surface of an electrostatic reproducing member comprising a rotatable fur brush in contact with the toner-bearing surface of said electrostatic reproducing member, and an electrically biased roller which is made of an electrically conductive body and is disposed in moving contact with said fur brush for removing toner therefrom by electrical attraction, said fur brush having a brush core formed of a conductive material and said brush core being grounded.
Claim 3
Dependent Claim
95 words
A cleaning device for removing toner remaining on an image reproducing surface of an electrostatic reproducing member comprising a rotatable fur brush in contact with the toner-bearing surface of said electrostatic reproducing member, and an electrically biased roller which is made of an electrically conductive body and is disposed in moving contact with said fur brush for removing toner therefrom by electrical attraction, said fur brush having a brush core formed of a conductive material and said brush core being biased with a polarity opposite to that of a bias voltage applied to said roller.
Claim 4
Dependent Claim
95 words
A cleaning device for removing toner remaining on an image reproducing surface of an electrostatic reproducing member comprising a rotatable fur brush in contact with the toner-bearing surface of said electrostatic reproducing member, and an electrically biased roller which is made of an electrically conductive body and is disposed in moving contact with said fur brush for removing toner therefrom by electrical attraction, said fur brush having a brush core formed of a conductive material and said brush core being biased with a polarity opposite to that of a bias voltage applied to said roller.
Claim 5
Dependent Claim
80 words
A cleaning device for removing toner remaining on an image reproducing surface of an electrostatic reproducing member comprising a rotatable fur brush in contact with the toner-bearing surface of said electrostatic reproducing member, and an electrically biased roller which is made of an electrically conductive body and is disposed in moving contact with said fur brush for removing toner therefrom by electrical attraction, said fur brush being formed as a conductive brush and being grounded through a non-linear resistance element.
Claim 6
Dependent Claim
80 words
A cleaning device for removing toner remaining on an image reproducing surface of an electrostatic reproducing member comprising a rotatable fur brush in contact with the toner-bearing surface of said electrostatic reproducing member, and an electrically biased roller which is made of an electrically conductive body and is disposed in moving contact with said fur brush for removing toner therefrom by electrical attraction, said fur brush being formed as a conductive brush and being grounded through a non-linear resistance element.
Claim 7
Dependent Claim
15 words
The cleaning device according to claim 3, wherein said non-linear resistance element is a varistor.
Claim 8
Dependent Claim
16 words
The cleaning device of claim 1, wherein said fur brush is formed of a semi-conductive material.
Claim 9
Dependent Claim
16 words
The cleaning device of claim 2, wherein said fur brush is formed of a semi-conductive material.
Claim 10
Dependent Claim
17 words
The cleaning device of claim 1, wherein said fur brush is formed of a electrically conductive material.
Claim 11
Dependent Claim
17 words
The cleaning device of claim 2, wherein said fur brush is formed of an electrically conductive material.
References Cited (Backward Citations)
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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) | 1988-03-25 | 1988-09-24 | 1989-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-25 | 1992-09-24 | 1993-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-25 | 1996-09-24 | 1997-03-26 | $7700.00 | Window Closed / Lapsed |