US4659212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning apparatus
Assignee: Toshiba Corp
•
Filing: 1985-01-03
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Granted: 1987-04-21
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Expires: 2005-01-03
Abstract
Abstract An electronic photographing apparatus has a cleaning apparatus for cleaning the surface of a photosensitive body. The cleaning apparatus includes a cleaning blade which is set so as to be able to touch and leave the surface of the photosensitive body. The cleaning blade removes the residual toner from the surface of the photosensitive body in the touching condition. The cleaning apparatus also includes a recovery member for collecting the developer removed by the cleaning blade, a casing for temporarily storing the developer collected by the recovery member, and a conveying member disposed opposite to the surface of the photosensitive body and adapted to convey the developer in the casing to a developer container outside the casing. The cleaning apparatus further includes a stirring member extending along the conveying member between the conveying member and the recovery member and adapted to oscillate, rock, and rotate, thereby stirring the developer in the casing.
Inventors
- 👤 Issey Ichihara
- 👤 Toshio Muraoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:24
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/10; G03G21/105
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
188 words
A cleaning apparatus for cleaning the surface of a movable image bearer, comprising: cleaning means, arranged in contact with the surface of the image bearer, for removing developer remaining on the surface as the image bearer moves; casing means for temporarily storing developer removed by said cleaning means; means, disposed opposite to the surface of the image bearer, for conveying developer out of said casing means; a flexible coil spring, extending along said conveying means, for oscillating, rocking and rotating the developer in said casing means to thereby stir the developer in said casing means; and a rotating shaft extending within said flexible coil spring and turning about its own longitudinal axis parallel to said conveying means so as to extend the full length of said casing means, said flexible coil spring being fixed to said rotating shaft only at one end of said flexible coil spring and being rotatable in unison with said rotating shaft, said flexible coil spring having inner peripheral surfaces intermittently contacting the rotating shaft so that the radius of rotation of the flexible coil spring, when rotated, does not exceed a predetermined value.
Claim 2
Dependent Claim
188 words
A cleaning apparatus for cleaning the surface of a movable image bearer, comprising: cleaning means, arranged in contact with the surface of the image bearer, for removing developer remaining on the surface as the image bearer moves; casing means for temporarily storing developer removed by said cleaning means; means, disposed opposite to the surface of the image bearer, for conveying developer out of said casing means; a flexible coil spring, extending along said conveying means, for oscillating, rocking and rotating the developer in said casing means to thereby stir the developer in said casing means; and a rotating shaft extending within said flexible coil spring and turning about its own longitudinal axis parallel to said conveying means so as to extend the full length of said casing means, said flexible coil spring being fixed to said rotating shaft only at one end of said flexible coil spring and being rotatable in unison with said rotating shaft, said flexible coil spring having inner peripheral surfaces intermittently contacting the rotating shaft so that the radius of rotation of the flexible coil spring, when rotated, does not exceed a predetermined value.
Claim 3
Dependent Claim
21 words
The cleaning apparatus according to claim 1 wherein the coil spring has a pitch ranging from 1 mm to 5 mm.
Claim 4
Dependent Claim
15 words
The cleaning apparatus according to claim 1, wherein said conveying means includes a rotatable auger.
Claim 5
Dependent Claim
19 words
The cleaning apparatus according to claim 3, further comprising means for rotating the rotating shaft as the auger rotates.
Claim 6
Dependent Claim
28 words
The cleaning apparatus according to claim 1, wherein an intermediate portion of the coil spring has a diameter of substantially greater than the diameter of the rotating shaft.
Claim 7
Dependent Claim
32 words
The cleaning apparatus according to claim 5 wherein the diameter of the intermediate portion of the coil spring is twice to four times as great as the diameter of the rotating shaft.
Claim 8
Dependent Claim
38 words
The cleaning apparatus according to claim 1, wherein the coil spring is coiled in a direction such that the coil spring conveys developer in the same direction as the conveying means conveys developer when the coil spring rotates.
Claim 9
Dependent Claim
25 words
The cleaning apparatus according to claim 1, wherein the coil spring is coiled in a direction opposite to the rotating direction of the rotating shaft.
Claim 10
Dependent Claim
22 words
The cleaning apparatus according to claim 1, further comprising: recovery means for collecting developer moved by said spring and said conveying means.
Claim 11
Dependent Claim
206 words
A cleaning apparatus for cleaning the surface of a movable image bearer, comprising: cleaning means, arranged in contact with the surface of the image bearer, for removing developer remaining on the surface as the image bearer moves; casing means for temporarily storing developer removed by said cleaning means; means, disposed opposite to the surface of the image bearer, for conveying developer out of said casing means; a flexible coil spring, extending along said conveying means, for oscillating, rocking and rotating the developer in said casing means to thereby stir the developer in said casing means; and a rotating shaft extending within said flexible coil spring and turning about its own longitudinal axis parallel to said conveying means so as to extend the full length of said casing means, said flexible coil spring being fixed to said shaft only at both ends of said flexible coil spring with an intermediate portion of said flexible coil spring being unattached to said rotating shaft and having a diameter substantially larger than a diameter of said rotating shaft, said flexible coil spring also being rotatable in unison with said rotating shaft so that the radius of rotation of the flexible coil spring, when rotated, does not exceed a predetermined value.
Claim 12
Dependent Claim
206 words
A cleaning apparatus for cleaning the surface of a movable image bearer, comprising: cleaning means, arranged in contact with the surface of the image bearer, for removing developer remaining on the surface as the image bearer moves; casing means for temporarily storing developer removed by said cleaning means; means, disposed opposite to the surface of the image bearer, for conveying developer out of said casing means; a flexible coil spring, extending along said conveying means, for oscillating, rocking and rotating the developer in said casing means to thereby stir the developer in said casing means; and a rotating shaft extending within said flexible coil spring and turning about its own longitudinal axis parallel to said conveying means so as to extend the full length of said casing means, said flexible coil spring being fixed to said shaft only at both ends of said flexible coil spring with an intermediate portion of said flexible coil spring being unattached to said rotating shaft and having a diameter substantially larger than a diameter of said rotating shaft, said flexible coil spring also being rotatable in unison with said rotating shaft so that the radius of rotation of the flexible coil spring, when rotated, does not exceed a predetermined value.
Claim 13
Dependent Claim
21 words
The cleaning apparatus according to claim 10, wherein the coil spring has a pitch ranging from 1 mm to 5 mm.
Claim 14
Dependent Claim
38 words
The cleaning apparatus according to claim 10, wherein the coil spring is coiled in a direction such that the coil spring conveys developer in the same direction as the conveying means conveys developer when the coil spring rotates.
Claim 15
Dependent Claim
25 words
The cleaning apparatus according to claim 10, wherein the coil spring is coiled in a direction opposite to the rotating direction of the rotating shaft.
Claim 16
Dependent Claim
22 words
The cleaning apparatus according to claim 10, further comprising: recovery means for collecting developer moved by said spring and said conveying means.
Claim 17
Dependent Claim
32 words
The cleaning apparatus according to claim 10 wherein the diameter of the intermediate portion of the coil spring is twice to four times as great as the diameter of the rotating shaft.
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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) | 1990-04-20 | 1990-10-20 | 1991-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-20 | 1994-10-20 | 1995-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-20 | 1998-10-20 | 1999-04-21 | $7700.00 | Window Closed / Lapsed |