Patent US4870465A successfully refreshed from Google Patents.
US4870465A
Expired / Lapsed
US
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Toner removal and surface abrading apparatus for a charge retentive surface
Assignee: Xerox Corp
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Filing: 1988-02-25
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Granted: 1989-09-26
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Expires: 2008-02-25
Abstract
Abstract In association with a blade cleaning arrangement supported for chiseling removal of toner from a charge retentive surface, an auger is provided to move toner to the edge of the charge retentive surface and simultaneously simulate a foam roll cleaner, known to have good abrasive characteristics in the presence of toner. An auger member having a roughened or sharpened surface in contact with a charge retentive surface is arranged slightly upstream and adjacent to a blade cleaning arrangement for the removal of residual toner accumulating adjacent to a cleaning blade after release from a charge retentive surface such as a photoreceptor in a reproduction machine. The auger member may be comprised of a foam material providing an abrading surface roughness. Other augering members simulate the abrading qualities of the foam roll cleaner, such as for example, a sharpened auger edge which lightly scrapes the charge retentive surface, or an auger of a polymeric material, with a roughed surface.
Inventors
- 👤 Nero R. Lindblad
- 👤 Morton Silverberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:28
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/0005; G03G21/0058; G03G21/10; G03G21/105
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
186 words
Reproduction apparatus including a charge retentive surface; image forming means for forming a latent image on the charge retentive surface; means for developing the latent image with toner; transfer means for transferring the developed toner image from the charge retentive surface to a support surface; and cleaning means for removing residual toner from the charge retentive surface, said cleaning means comprising: a cleaning blade supported within a cleaning housing for chiseling removal of toner from the charge retentive surface and accumulating removed toner adjacent thereto; toner removal means for removal of toner from the area adjacent to the cleaning blade, including a spiral shaped auger member journaled for rotating movement to carry toner from the cleaning blade to an output, and having an auger member surface contacting and abrading the charge retentive surface whereby strongly adhering spots of film of foreign material remaining on surface subsequent to cleaning are removed, and wherein the auger member is rotated so that the rate of accumulated toner removal from the area adjacent the cleaning blade is fast when compared to the time for toner to reach the cleaning blade.
Claim 2
Dependent Claim
186 words
Reproduction apparatus including a charge retentive surface; image forming means for forming a latent image on the charge retentive surface; means for developing the latent image with toner; transfer means for transferring the developed toner image from the charge retentive surface to a support surface; and cleaning means for removing residual toner from the charge retentive surface, said cleaning means comprising: a cleaning blade supported within a cleaning housing for chiseling removal of toner from the charge retentive surface and accumulating removed toner adjacent thereto; toner removal means for removal of toner from the area adjacent to the cleaning blade, including a spiral shaped auger member journaled for rotating movement to carry toner from the cleaning blade to an output, and having an auger member surface contacting and abrading the charge retentive surface whereby strongly adhering spots of film of foreign material remaining on surface subsequent to cleaning are removed, and wherein the auger member is rotated so that the rate of accumulated toner removal from the area adjacent the cleaning blade is fast when compared to the time for toner to reach the cleaning blade.
Claim 3
Dependent Claim
18 words
The apparatus as defined in claim 1 wherein the spiral auger member is comprised of a foam material.
Claim 4
Dependent Claim
26 words
The apparatus as defined in claim 2 wherein the auger member surface includes a plurality of pores collecting toner and abrading the charge retentive surface therewith.
Claim 5
Dependent Claim
17 words
The apparatus as defined in claim 2 wherein the foam material is filled with an abrasive material.
Claim 6
Dependent Claim
30 words
The apparatus as defined in claim 2 wherein the spiral auger member is provided with an abrasive material at the auger member surface contacting and abrading the charge retentive surface.
Claim 7
Dependent Claim
24 words
The apparatus as defined in claim 1 wherein the spiral auger member is comprised of a polymeric material, with a roughened auger member surface.
Claim 8
Dependent Claim
23 words
The apparatus as defined in claim 1 wherein the spiral auger member is comprised of a polymeric material, filled with an abrasive material.
Claim 9
Dependent Claim
151 words
Reproduction apparatus including a charge retentive surface; image forming means for forming a latent image on the charge retentive surface; means for developing the latent image with toner; transfer means for transferring the developed toner image from the charge retentive surface to a support surface; and cleaning means for removing residual toner from the charge retentive surface, said cleaning means comprising: a cleaning blade supported within a cleaning housing for chiseling removal of toner from the charge retentive surface and accumulating removed toner adjacent thereto; toner removal means for removal of toner from the area adjacent to the cleaning blade, including a spiral shaped auger member journaled for rotating movement to carry toner from the cleaning blade to an output, and having a beveled auger member edge contacting and abrading the charge retentive surface whereby strongly adhering spots of film of foreign material remaining on surface subsequent to cleaning are removed.
Claim 10
Dependent Claim
151 words
Reproduction apparatus including a charge retentive surface; image forming means for forming a latent image on the charge retentive surface; means for developing the latent image with toner; transfer means for transferring the developed toner image from the charge retentive surface to a support surface; and cleaning means for removing residual toner from the charge retentive surface, said cleaning means comprising: a cleaning blade supported within a cleaning housing for chiseling removal of toner from the charge retentive surface and accumulating removed toner adjacent thereto; toner removal means for removal of toner from the area adjacent to the cleaning blade, including a spiral shaped auger member journaled for rotating movement to carry toner from the cleaning blade to an output, and having a beveled auger member edge contacting and abrading the charge retentive surface whereby strongly adhering spots of film of foreign material remaining on surface subsequent to cleaning are removed.
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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) | 1992-09-25 | 1993-03-27 | 1993-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-25 | 1997-03-27 | 1997-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-25 | 2001-03-27 | 2001-09-26 | $7700.00 | Window Closed / Lapsed |