Patent US5455666A successfully refreshed from Google Patents.
US5455666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Developer extracting apparatus and image forming apparatus using it
Assignee: Canon Inc
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Filing: 1994-06-27
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Granted: 1995-10-03
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Expires: 2014-06-27
Abstract
Abstract A developer extracting apparatus for extracting developer from a mixture of developer and foreign matter, includes a filter for permitting passage of developer and for inhibiting passage of foreign matter, protection means for protecting the filter, and a vibration applying means for applying vibration to the filter via the protection means.
Inventors
- 👤 Hironobu Saito
- 👤 Masanari Shirai
- 👤 Masami Maetani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:16
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/10
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
67 words
A developer extracting apparatus for extracting a developer from a mixture of the developer and foreign matter, comprising: filter means for permitting passage of the developer but inhibiting passage of the foreign matter; protection means for protecting said filter means; and vibration applying means for applying vibration to said filter means; wherein said vibration applying means applies the vibration to said filter means via said protection means.
Claim 2
Dependent Claim
67 words
A developer extracting apparatus for extracting a developer from a mixture of the developer and foreign matter, comprising: filter means for permitting passage of the developer but inhibiting passage of the foreign matter; protection means for protecting said filter means; and vibration applying means for applying vibration to said filter means; wherein said vibration applying means applies the vibration to said filter means via said protection means.
Claim 3
Dependent Claim
15 words
A developer extracting apparatus according to claim 1, wherein said filter means is a mesh.
Claim 4
Dependent Claim
23 words
A developer extracting apparatus according to claim 1, wherein said protection means is a sheet attached to a portion of said filter means.
Claim 5
Dependent Claim
31 words
A developer extracting apparatus according to claim 2, wherein said protection means is a rectangular sheet attached to the mesh in a direction transverse to a weaving direction of the mesh.
Claim 6
Dependent Claim
34 words
A developer extracting apparatus according to claim 3, wherein two sheets are attached to respective surfaces of said filter means, and one of said sheets is larger than the other one of said sheets.
Claim 7
Dependent Claim
19 words
A developer extracting apparatus according to claim 5, wherein said vibration applying means is abutted against the smaller sheet.
Claim 8
Dependent Claim
31 words
A developer extracting apparatus according to claim 4, wherein said sheet is attached to said mesh while inclining with respect to the weaving direction of the mesh by about 45 degrees.
Claim 9
Dependent Claim
24 words
A developer extracting apparatus according to claim 1, wherein said vibration applying means includes a cam for beating a surface of said protection means.
Claim 10
Dependent Claim
88 words
An image forming apparatus for forming a developer image on a recording material, comprising: an image bearing member; image forming means for forming a developer image on said image bearing member; cleaning means for removing a residual matter from a surface of said image bearing member; and developer extracting means including filter means for permitting passage of the developer but inhibiting passage of the foreign matter, protection means for protecting said filter means, and vibration applying means for applying vibration to said filter means via said protection means.
Claim 11
Dependent Claim
88 words
An image forming apparatus for forming a developer image on a recording material, comprising: an image bearing member; image forming means for forming a developer image on said image bearing member; cleaning means for removing a residual matter from a surface of said image bearing member; and developer extracting means including filter means for permitting passage of the developer but inhibiting passage of the foreign matter, protection means for protecting said filter means, and vibration applying means for applying vibration to said filter means via said protection means.
Claim 12
Dependent Claim
15 words
An image forming apparatus according to claim 9, wherein said filter means is a mesh.
Claim 13
Dependent Claim
23 words
An image forming apparatus according to claim 9, wherein said protection means is a sheet attached to a portion of said filter means.
Claim 14
Dependent Claim
31 words
An image forming apparatus according to claim 10, wherein said protection means is a rectangular sheet attached to the mesh in a direction transverse to a weaving direction of the mesh.
Claim 15
Dependent Claim
34 words
An image forming apparatus according to claim 11, wherein two sheets are attached to respective surfaces of said filter means, and one of said sheets is larger than the other one of said sheets.
Claim 16
Dependent Claim
19 words
An image forming apparatus according to claim 13, wherein said vibration applying means is abutted against the smaller sheet.
Claim 17
Dependent Claim
31 words
An image forming apparatus according to claim 12, wherein said sheet is attached to said mesh while inclining with respect to the weaving direction of the mesh by about 45 degrees.
Claim 18
Dependent Claim
24 words
An image forming apparatus according to claim 9, wherein said vibration applying means includes a cam for beating a surface of said protection means.
Claim 19
Dependent Claim
47 words
An image forming apparatus according to claim 9, further comprising transfer means for transferring the developer image from said image bearing member to the recording material, and wherein said cleaning means removes the residual matter from the surface of said image bearing member after a transferring operation.
Claim 20
Dependent Claim
36 words
An image forming apparatus according to claim 9, further comprising developing means for supplying developer to said image bearing member, and convey means for conveying developer extracted by said developer extracting means to said developing means.
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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) | 1998-10-02 | 1999-04-03 | 1999-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-10-02 | 2003-04-03 | 2003-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-10-02 | 2007-04-03 | 2007-10-03 | $7700.00 | Window Closed / Lapsed |