US5200786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Donor brush ram system
Assignee: Xerox Corp
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Filing: 1991-11-26
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Granted: 1993-04-06
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Expires: 2011-11-26
Abstract
Abstract A release agent management (RAM) system for a heat an pressure fuser. The RAM system includes a metering roll and donor brush or equivalent structure for providing a low friction nip between it and a pressure or fuser rolls and also between the it and the metering roll. The low friction nip allows rolls contacting the donor brush or its equivalent to operated at different speeds. Thus, the metering roll can be rotated at different speeds for delivering different quantities of release agent material in accordance with different operating conditions of the imaging apparatus in which the RAM system is used.
Inventors
- 👤 Paul M. Fromm
- 👤 Rabin Moser
- 👤 Alvin D. Kromm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:43
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2017; G03G15/2025
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
117 words
Apparatus for applying offset preventing liquid to one member of a contact fuser for fixing powder images to a substrate, said apparatus comprising: a supply of release agent material; a release agent metering member supported for contact with said supply of release agent material; means for effecting movement of said metering member in an endless path at different surface velocities; and donor means supported in contact with said metering member and a fuser member of said contact fuser for conveying release agent material from the former to the latter at various rates depending on the surface velocity of said metering member; said means for effecting movement of said metering member being operative independently of said fuser member.
Claim 2
Dependent Claim
117 words
Apparatus for applying offset preventing liquid to one member of a contact fuser for fixing powder images to a substrate, said apparatus comprising: a supply of release agent material; a release agent metering member supported for contact with said supply of release agent material; means for effecting movement of said metering member in an endless path at different surface velocities; and donor means supported in contact with said metering member and a fuser member of said contact fuser for conveying release agent material from the former to the latter at various rates depending on the surface velocity of said metering member; said means for effecting movement of said metering member being operative independently of said fuser member.
Claim 3
Dependent Claim
30 words
Apparatus according to claim 1 wherein said donor means comprises a structure which exhibits low friction between it and the members which it operatively engages for conveying release agent material.
Claim 4
Dependent Claim
12 words
Apparatus according to claim 2 wherein said donor means comprises a brush.
Claim 5
Dependent Claim
12 words
Apparatus according to claim 2 wherein said donor means a paddle wheel.
Claim 6
Dependent Claim
12 words
Apparatus according to claim 2 wherein said donor means comprises a sponge.
Claim 7
Dependent Claim
12 words
Apparatus according to claim 1 wherein said donor means comprises a brush.
Claim 8
Dependent Claim
13 words
Apparatus according to claim 1 wherein said donor means comprises a paddle wheel.
Claim 9
Dependent Claim
12 words
Apparatus according to claim 1 wherein said donor means comprises a sponge.
Claim 10
Dependent Claim
137 words
Contact fuser apparatus, said apparatus comprising: a first fuser member; a second fuser member supported for engagement with said first fuser member to form a nip through which substrates carrying powder images pass; means for elevating the temperature of at least one of said members; a supply of release agent material; a release agent metering member supported for contact with said supply of release agent material; means for effecting movement of said metering member in an endless path at different surface velocities; and donor means supported in contact with said metering member and one of said fusing members for conveying release agent material from the former to the latter at various rates depending on the surface velocity of said metering member; said means for effecting movement of said metering member being operative independently of said fuser member.
Claim 11
Dependent Claim
137 words
Contact fuser apparatus, said apparatus comprising: a first fuser member; a second fuser member supported for engagement with said first fuser member to form a nip through which substrates carrying powder images pass; means for elevating the temperature of at least one of said members; a supply of release agent material; a release agent metering member supported for contact with said supply of release agent material; means for effecting movement of said metering member in an endless path at different surface velocities; and donor means supported in contact with said metering member and one of said fusing members for conveying release agent material from the former to the latter at various rates depending on the surface velocity of said metering member; said means for effecting movement of said metering member being operative independently of said fuser member.
Claim 12
Dependent Claim
30 words
Apparatus according to claim 9 wherein said donor means comprises a structure which exhibits low friction between it and the members which it operatively engages for conveying release agent material.
Claim 13
Dependent Claim
12 words
Apparatus according to claim 10 wherein said donor means comprises a brush.
Claim 14
Dependent Claim
13 words
Apparatus according to claim 10 wherein said donor means comprises a paddle wheel.
Claim 15
Dependent Claim
12 words
Apparatus according to claim 10 wherein said donor means comprises a sponge.
Claim 16
Dependent Claim
12 words
Apparatus according to claim 9 wherein said donor means comprises a brush.
Claim 17
Dependent Claim
13 words
Apparatus according to claim 9 wherein said donor means comprises a paddle wheel.
Claim 18
Dependent Claim
12 words
Apparatus according to claim 9 wherein said donor means comprises a sponge.
Claim 19
Independent Claim
159 words
The method of fusing powder images on an image receiver, including the steps of: supporting first and second fuser members in contact with each other; elevating the temperature of at least one of said fuser members; supporting a supply of release agent material adjacent said fuser members; using a release agent metering member supported for contact with said supply of release agent material, applying said release agent material to one of said fuser members effecting movement of said metering member in an endless path at different surface velocities in accordance with different operating conditions of an imaging apparatus, said movement of said metering member at different surface velocities being independent of the speed of fuser members; and supporting donor means in contact with said metering member and one of said fusing members for conveying release agent material from said metering member to one of said fusing members at various rates depending on the surface velocity of said metering member.
Claim 20
Independent Claim
159 words
The method of fusing powder images on an image receiver, including the steps of: supporting first and second fuser members in contact with each other; elevating the temperature of at least one of said fuser members; supporting a supply of release agent material adjacent said fuser members; using a release agent metering member supported for contact with said supply of release agent material, applying said release agent material to one of said fuser members effecting movement of said metering member in an endless path at different surface velocities in accordance with different operating conditions of an imaging apparatus, said movement of said metering member at different surface velocities being independent of the speed of fuser members; and supporting donor means in contact with said metering member and one of said fusing members for conveying release agent material from said metering member to one of said fusing members at various rates depending on the surface velocity of said metering member.
Claim 21
Dependent Claim
35 words
The method according to claim 17 wherein said step of supporting donor means comprises supporting a structure which exhibits low friction between it and the members which it operatively engages for conveying release agent material.
Claim 22
Dependent Claim
18 words
The method according to claim 18 wherein said step of supporting a donor means comprises supporting a brush.
Claim 23
Dependent Claim
19 words
The method according to claim 18 wherein said step of supporting a donor means comprises supporting a paddle wheel.
Claim 24
Dependent Claim
18 words
The method according to claim 18 wherein said step of supporting a donor means comprises supporting a sponge.
Claim 25
Dependent Claim
18 words
The method according to claim 17 wherein said step of supporting a donor means comprises supporting a brush.
Claim 26
Dependent Claim
19 words
The method according to claim 17 wherein said step of supporting a donor means comprises supporting a paddle wheel.
Claim 27
Dependent Claim
18 words
The method according to claim 17 wherein said step of supporting a donor means comprises supporting a sponge.
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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) | 1996-04-05 | 1996-10-05 | 1997-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-05 | 2000-10-05 | 2001-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-05 | 2004-10-05 | 2005-04-06 | $7700.00 | Window Closed / Lapsed |