US3883291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil applicator for reproduction machine fuser
Assignee: Xerox Corp
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Filing: 1973-11-19
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Granted: 1975-05-13
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Expires: 1993-11-19
Abstract
Abstract A roll-type fuser for a reproduction or copying machine where, to obviate any tendency for the finished copy to adhere to the fuser roll surface a liquid release material is applied thereto by a liquid applicator. To prevent the application of excess release material or the uneven application of the liquid material on the fuser roll surface, a wiper, which may comprise a relatively soft roll element, bears against the roll surface to smooth out and remove excess liquid prior to contact of the fuser roll with the copy material being fused. To control the amount of release material dispensed by the applicator and, commensurate therewith, the wiping effectiveness of the wiper, a common frame, which is displaceable toward and away from the fuser roll, supports both the liquid applicator and the wiper. Adjustable bias means on the frame simultaneously controls contact pressures of both applicator and wiper with the fuser roll so that a change in the contact pressure of the applicator with the fuser roll with attendant change in the amount of release material applied to the fuser roll by the applicator effects conjointly therewith, a change in wiping ability of the wiper.
Inventors
- 👤 Eugene F Cloutier
- 👤 Douglas P Connolly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:36
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2017; G03G15/2025
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
197 words
In a reproduction machine adapted to produce copies of original documents having a fuser for fixing the image developed on the copy material, the fuser comprising a cooperating pressure roll and heated fusing roll forming a fusing nip through which copies being fused pass, the combination of: a supply of liquid release material adapted for application to the surface of the fusing roll to prevent the fused copy material from adhering to the fusing roll; applicator means in operative communication with said liquid supply to apply said release material on said fusing roll surface; wiper means for wiping the surface of said fusing roll to remove excess release material and provide a uniform coating of said release material before contact with said copy material; bias means for biasing said applicator means and said wiper means into pressure engagement with said fuser roll; and bias control means for simultaneously varying pressure between said fuser roll and both said applicator and wiper means whereby adjustment of applicator means pressure to change the quantity of release material applied to said fuser roll automatically changes wiper means pressure to effect a corresponding change in the wiping effectiveness of said wiper means.
Claim 2
Dependent Claim
197 words
In a reproduction machine adapted to produce copies of original documents having a fuser for fixing the image developed on the copy material, the fuser comprising a cooperating pressure roll and heated fusing roll forming a fusing nip through which copies being fused pass, the combination of: a supply of liquid release material adapted for application to the surface of the fusing roll to prevent the fused copy material from adhering to the fusing roll; applicator means in operative communication with said liquid supply to apply said release material on said fusing roll surface; wiper means for wiping the surface of said fusing roll to remove excess release material and provide a uniform coating of said release material before contact with said copy material; bias means for biasing said applicator means and said wiper means into pressure engagement with said fuser roll; and bias control means for simultaneously varying pressure between said fuser roll and both said applicator and wiper means whereby adjustment of applicator means pressure to change the quantity of release material applied to said fuser roll automatically changes wiper means pressure to effect a corresponding change in the wiping effectiveness of said wiper means.
Claim 3
Dependent Claim
21 words
The reproduction machine according to claim 1 in which said wiper means comprises a ring-like member of relatively soft rubber-like material.
Claim 4
Dependent Claim
39 words
The reproduction machine according to claim 1 including a support member for both said applicator means and said wiper means, said bias means engaging said support member to bias both said applicator and wiper means against said fuser roll.
Claim 5
Dependent Claim
93 words
In a reproduction machine adapted to produce copies of documents, said machine having cooperating pressure and heated rolls for fusing images developed on the copy material, the combination of: applicator means to apply a liquid release material to the fuser heated roll to prevent copies from adhering thereto, wiper means engageable with the periphery of said fuser heated roll to remove excess release maTerial therefrom before contact with the copy material being fused; and bias means to bias both said applicator means and said wiper means into contact with said fuser heated roller.
Claim 6
Dependent Claim
93 words
In a reproduction machine adapted to produce copies of documents, said machine having cooperating pressure and heated rolls for fusing images developed on the copy material, the combination of: applicator means to apply a liquid release material to the fuser heated roll to prevent copies from adhering thereto, wiper means engageable with the periphery of said fuser heated roll to remove excess release maTerial therefrom before contact with the copy material being fused; and bias means to bias both said applicator means and said wiper means into contact with said fuser heated roller.
Claim 7
Dependent Claim
26 words
The reproduction machine according to claim 4 in which said wiper means comprises a relatively soft rubber-like element, said wiper element being substantially round in cross-section.
Claim 8
Dependent Claim
19 words
The reproduction machine according to claim 5 in which said wiper element is rotatable with said fuser heated roll.
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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |