US4500196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoconductive element cleaning apparatus and residual toner collecting apparatus
Assignee: Ricoh Co Ltd
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Filing: 1984-05-31
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Granted: 1985-02-19
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Expires: 2004-05-31
Abstract
Abstract Residual toner carried on the imaging surface of a photoconductive belt is removed by a cleaning sleeve, conveyed to a toner discharging station and let fall through an opening into a removable container. A spring biased closure member stops the opening when the container is removed for disposal, thereby preventing contamination to the adjacent structural elements. Means is provided for urging one to position the container always in a predetermined orientation relative to the opening at the toner discharging station. Undesirable particles entrained by the other surface of the belt is collected by a counter member which is located at the opposite side to the cleaning sleeve with respect to the belt. The counter member may take the form of a block of soft material or bristles carried on a support member.
Inventors
- 👤 Akira Shimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:05
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/0005; G03G21/0047; G03G21/10; G03G21/12; G03G2221/00; G03G2221/0005
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
89 words
A toner collecting apparatus for collecting residual toner removed from a photoconductive element, comprising: a toner discharging means which includes an opening for discharging the removed toner from a cleaning unit; a removable container formed with a mouth through which the removed toner discharged from the toner discharging means through the opening is collected in said container; a closure mechanism for positioning the container relative to the toner discharging means and blocking the opening of the toner discharging means when the container is removed from the toner discharging means.
Claim 2
Dependent Claim
89 words
A toner collecting apparatus for collecting residual toner removed from a photoconductive element, comprising: a toner discharging means which includes an opening for discharging the removed toner from a cleaning unit; a removable container formed with a mouth through which the removed toner discharged from the toner discharging means through the opening is collected in said container; a closure mechanism for positioning the container relative to the toner discharging means and blocking the opening of the toner discharging means when the container is removed from the toner discharging means.
Claim 3
Dependent Claim
38 words
A toner collecting apparatus as claimed in claim 1, further comprising a screw disposed within the toner discharging means in order to convey the removed toner from the cleaning unit to the opening of the toner discharging means.
Claim 4
Dependent Claim
40 words
A toner collecting apparatus as claimed in claim 1, in which the toner discharging means comprises a guide for guiding the closure mechanism when the container is moved into or out of its coactive position with the toner discharging means.
Claim 5
Dependent Claim
33 words
A toner collecting apparatus as claimed in claim 1, in which the closure mechanism comprises a spring constantly biasing the closure mechanism in a direction for closing the opening of the discharging means.
Claim 6
Dependent Claim
32 words
A toner collecting apparatus as claimed in claim 1, further comprising a seal member providing hermetic communication between the opening of the toner discharging means and the mouth of the toner container.
Claim 7
Dependent Claim
34 words
A toner collecting apparatus as claimed in claim 1, further comprising a sensor sensing a level of the removed toner which is collected in the container from the opening of the toner discharging means.
Claim 8
Dependent Claim
28 words
A toner collecting apparatus as claimed in claim 6, in which the sensor senses whether the container is in a predetermined orientation relative to the toner discharging means.
Claim 9
Dependent Claim
48 words
A toner collecting apparatus as claimed in claim 7, further comprising a sensor control member the sensor being constructed to sense whether the container is in the predetermined orientation relative to the toner discharging means in response to a position of the control member of the shutter mechanism.
Claim 10
Dependent Claim
23 words
A toner collecting apparatus as claimed in claim 8, in which the sensor control member comprises a plate which constitutes the closure mechanism.
Claim 11
Dependent Claim
24 words
A toner collecting apparatus as claimed in claim 8, in which the sensor control member comprises a seal which is bonded to the container.
Claim 12
Dependent Claim
40 words
A toner collecting apparatus as claimed in claim 1, further comprising container support means which is movable up and down so that the mouth of the container moves vertically toward and away from the opening of the toner discharging means.
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) | 1988-02-19 | 1988-08-20 | 1989-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-19 | 1992-08-20 | 1993-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-19 | 1996-08-20 | 1997-02-19 | $7700.00 | Window Closed / Lapsed |