US4601569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for cleaning a photoconductor
Assignee: Eastman Kodak Co
•
Filing: 1984-12-19
•
Granted: 1986-07-22
•
Expires: 2004-12-19
Abstract
Abstract A cleaning apparatus includes a magnetic cleaning brush for removing residual toner from a photoconductor. A hollow rotating detoning roller electrostatically removes toner from the cleaning brush. The detoning roller has apertures in the surface thereof allowing toner to be mechanically swept by a skiving blade into the hollow portion of the detoning roller. A stationary auger transports the toner to one end of the roller where it may be vacuumed up.
Inventors
- 👤 Vladimir A. Garris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:10
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/0005; G03G21/0047; G03G21/10; G03G21/105; G03G2221/00; G03G2221/0005
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
122 words
In a cleaning apparatus for removing residual toner particles from a surface of a photoconductor, the apparatus including magnetic brush means including magnetic particles forming a nap for capturing toner particles from the surface; detoning means including a surface movable about a closed path for removing toner particles from the magnetic brush means and on to the surface of the detoning means and the improvement which comprises: means defining apertures on the surface of the detoning means, said apertures sized to permit toner particles removed from the photoconductor to pass through said apertures; toner conveying means for directing the toner particles from the surface of the detoning means through said apertures into a space encompassed by the surface of the detoning means.
Claim 2
Dependent Claim
122 words
In a cleaning apparatus for removing residual toner particles from a surface of a photoconductor, the apparatus including magnetic brush means including magnetic particles forming a nap for capturing toner particles from the surface; detoning means including a surface movable about a closed path for removing toner particles from the magnetic brush means and on to the surface of the detoning means and the improvement which comprises: means defining apertures on the surface of the detoning means, said apertures sized to permit toner particles removed from the photoconductor to pass through said apertures; toner conveying means for directing the toner particles from the surface of the detoning means through said apertures into a space encompassed by the surface of the detoning means.
Claim 3
Dependent Claim
18 words
The apparatus of claim 1 and wherein the aperture means are formed in the shape of a helix.
Claim 4
Dependent Claim
54 words
The apparatus of claim 1 and including means for electrically biasing the detoning means to a potential to cause toner particles to move from the magnetic brush means onto the surface of the detoning means without causing a substantial amount of the magnetic particles to also move onto the surface of the detoning means.
Claim 5
Dependent Claim
27 words
The apparatus of claim 1 and including skiving means operating on the surface of the detoning means for mechanically sweeping toner from such surface into the apertures.
Claim 6
Dependent Claim
25 words
The apparatus of claim 1 and wherein the toner conveying means includes stationary, nonrotating auger means for conveying the toner particles to a collecting station.
Claim 7
Dependent Claim
27 words
The apparatus of claim 5 and including skiving means operating on the surface of the detoning means for mechanically sweeping toner from such surface into the apertures.
Claim 8
Dependent Claim
20 words
The apparatus of claim 5 and wherein the stationary non-rotating auger means is negatively electrically biased by a D.C. source.
Claim 9
Dependent Claim
20 words
The apparatus of claim 5 and wherein vacuum forming means are coupled with the auger means to remove toner particles.
Claim 10
Dependent Claim
30 words
The apparatus of claim 5 and wherein the detoning means includes a roller having a width dimension approximately the same as a width dimension of the surface of the photoconductor.
Claim 11
Dependent Claim
60 words
The apparatus of claim 9 and wherein the magnetic brush means comprises a roller comprising an outer shell means for carrying the nap of magnetic particles and a core including a plurality of magnet means located within the shell and rotatable relative to the shell means for creating an agitating movement of the magnetic carrier particles on the shell means.
Claim 12
Dependent Claim
54 words
The apparatus of claim 10 and including means for electrically biasing the detoning means to a potential to cause toner particles to move from the magnetic brush means onto the surface of the detoning means without causing a substantial amount of the magnetic particles to also move onto the surface of the detoning means.
Claim 13
Dependent Claim
27 words
The apparatus of claim 11 and including skiving means operating on the surface of the detoning means for mechanically sweeping toner from such surface into the apertures.
Claim 14
Dependent Claim
145 words
In a cleaning apparatus for removing residual toner particles from a surface of a photoconductor, the apparatus including magnetic brush means including magnetic particles forming a nap for capturing toner particles from the surface; detoning means including a surface movable about a closed path for removing toner particles from the magnetic brush means and on to the surface of the detoning means and the improvement which comprises: means defining apertures on the surface of the detoning means, said apertures sized to permit toner particles removed from the photoconductor to pass through said apertures; toner conveying means for directing the toner particles from the surface of the detoning means through said apertures into a space encompassed by the surface of the detoning means; auger means for conveying the toner particles to a collecting station located in the space encompassed by the surface of the detoning means.
Claim 15
Dependent Claim
145 words
In a cleaning apparatus for removing residual toner particles from a surface of a photoconductor, the apparatus including magnetic brush means including magnetic particles forming a nap for capturing toner particles from the surface; detoning means including a surface movable about a closed path for removing toner particles from the magnetic brush means and on to the surface of the detoning means and the improvement which comprises: means defining apertures on the surface of the detoning means, said apertures sized to permit toner particles removed from the photoconductor to pass through said apertures; toner conveying means for directing the toner particles from the surface of the detoning means through said apertures into a space encompassed by the surface of the detoning means; auger means for conveying the toner particles to a collecting station located in the space encompassed by the surface of the detoning means.
References Cited (Backward Citations)
US28566A
Cited
USRE28566E
Cited
US3706108A
Cited
US3951542A
Cited
US3917398A
Cited
US3848994A
Cited
US4323306A
Cited
US4172303A
Cited
US4325628A
Cited
US4313674A
Cited
US4427289A
Cited
US4390268A
Cited
US4326315A
Cited
US4348103A
Cited
US4402103A
Cited
US4411042A
Cited
US4361922A
Cited
US4530597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-07-21 | 1990-01-20 | 1990-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-21 | 1994-01-20 | 1994-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-21 | 1998-01-20 | 1998-07-22 | $7700.00 | Window Closed / Lapsed |