Patent US3770346A successfully refreshed from Google Patents.
US3770346A
Expired / Lapsed
US
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Method and apparatus for fuser assembly cooling in an electrostatographic machine
Assignee: Xerox Corp
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Filing: 1972-03-16
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Granted: 1973-11-06
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Expires: 1992-03-16
Abstract
Abstract An assembly is provided having elongated slot disposed about the vicinity of a fuser assembly including a fuser roller. The gaseous medium about such vicinity is caused to be vented to the atmosphere by passage through such assembly by activating a fan in fluid communication on the suction side thereof with the assembly.
Inventors
- 👤 W Jordan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:20
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2064
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
109 words
In an electrostatographic machine for making copies, said machine having a conductive fusing assembly with a fuser roller and a pressure roller, the combination of: a plenum chamber provided with an outlet means and an elongated inlet means, said inlet means having a dimension of about that of a nip formed by contact of said rollers, means positioning said plenum chamber with said elongated inlet means in operative relationship with the nip formed by contact of said rollers, and fan means for causing the gaseous medium surrounding the nip formed by contact of said rollers to be drawn therefrom into said plenum chamber and removed from said fusing assembly.
Claim 2
Dependent Claim
109 words
In an electrostatographic machine for making copies, said machine having a conductive fusing assembly with a fuser roller and a pressure roller, the combination of: a plenum chamber provided with an outlet means and an elongated inlet means, said inlet means having a dimension of about that of a nip formed by contact of said rollers, means positioning said plenum chamber with said elongated inlet means in operative relationship with the nip formed by contact of said rollers, and fan means for causing the gaseous medium surrounding the nip formed by contact of said rollers to be drawn therefrom into said plenum chamber and removed from said fusing assembly.
Claim 3
Dependent Claim
35 words
The electrostatographic machine as defined in claim 1 wherein said fan means is activated in response to a signal indicative of the passage of a receIving surface of the maximum length for such electrostatographic machine.
Claim 4
Independent Claim
87 words
A method for removing the gaseous medium about the nip of a fuser assembly including a fuser roller and a pressure roller which comprises: positioning an enclosure about said nip of said fuser assembly to form a zone, said zone having an elongated inlet and an outlet thereto, said elongated inlet having a dimension corresponding to that of said nip; and withdrawing a gaseous medium from said outlet thereby causing the gaseous medium surrounding said nip to be passed through said zone, and venting said gaseous medium.
Claim 5
Independent Claim
87 words
A method for removing the gaseous medium about the nip of a fuser assembly including a fuser roller and a pressure roller which comprises: positioning an enclosure about said nip of said fuser assembly to form a zone, said zone having an elongated inlet and an outlet thereto, said elongated inlet having a dimension corresponding to that of said nip; and withdrawing a gaseous medium from said outlet thereby causing the gaseous medium surrounding said nip to be passed through said zone, and venting said gaseous medium.
Claim 6
Dependent Claim
35 words
The process as defined in claim 3 wherein said gaseous medium is passed through said zone in response to a signal indicating a change in the operation of a machine employing said conductive fuser assembly.
Claim 7
Dependent Claim
26 words
The process as defined in claim 4 wherein said signal is produced by the use of an image receiving member of a designed maximum dimension therefor.
Claim 8
Dependent Claim
103 words
In a reproduction apparatus for producing copies of originals and incorporating fusing means to fuse images developed on said copies, said fusing means including a roller pair cooperating to form a nip through which said copies pass, at least one of said roller pair being heated, the improvement comprising: manifold means having an elongated inlet slot disposed adjacent said fusing means nip to draw gaseous medium generated during fusing from the area of said fusing means nip, and means for evacuating said manifold means whereby to draw off of said gaseous medium from said fusing means nip through said manifold means inlet slot.
Claim 9
Dependent Claim
103 words
In a reproduction apparatus for producing copies of originals and incorporating fusing means to fuse images developed on said copies, said fusing means including a roller pair cooperating to form a nip through which said copies pass, at least one of said roller pair being heated, the improvement comprising: manifold means having an elongated inlet slot disposed adjacent said fusing means nip to draw gaseous medium generated during fusing from the area of said fusing means nip, and means for evacuating said manifold means whereby to draw off of said gaseous medium from said fusing means nip through said manifold means inlet slot.
Claim 10
Dependent Claim
36 words
The reproduction apparatus according to claim 6 including copy transport means adjacent the discharge side of said fusing means nip, said manifold means inlet slot being disposed between said fusing means discharge and said transport 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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |