EP0035362A1
Expired / Lapsed
EP
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A thermally conductive fuser member
Assignee: Xerox Corp
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Filing: 1981-02-25
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Granted: —
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Expires: 2001-02-25
Abstract
Abstract An improved fuser roll (10) is disclosed which has a rigid core (11) and having coated on the core a thin layer (12) of a composition which comprises the crosslink product of a mixture of about 100 parts by weight of a, ω-hydroxypolydimethylsiloxane, about 128 to 250 parts by weight of finely divided tabular alumina, about 13 to 50 parts by weight of a finely divided iron oxide, together with effective amounts of a crosslinking agent and a crosslinking catalyst.
Inventors
- 👤 Arnold W. Henry
- 👤 John Sagal, Jr.
- 👤 Jack C. Azar
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 02:57
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2053; G03G15/2057; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/256; Y10T428/257; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
93 words
A thermally conductive fuser member (10), for use inan electrographic copier, made of a relatively rigid base (11) and a thin layer (1 2 ) of a composition coated on said base, characterized in that said composition comprises the crosslinked product of a mixture of about 100 parts by weight of alpha, omega-hydroxypolydimethylsiloxane, about 128 to 250 parts by weight of finely divided tabular alumina, about 13 to 60 parts by weight of finely divided iron oxide particles, a sufficient amount of a crosslinking agent, and an effective amount of a crosslinking catalyst.
Claim 2
Dependent Claim
93 words
A thermally conductive fuser member (10), for use inan electrographic copier, made of a relatively rigid base (11) and a thin layer (1 2 ) of a composition coated on said base, characterized in that said composition comprises the crosslinked product of a mixture of about 100 parts by weight of alpha, omega-hydroxypolydimethylsiloxane, about 128 to 250 parts by weight of finely divided tabular alumina, about 13 to 60 parts by weight of finely divided iron oxide particles, a sufficient amount of a crosslinking agent, and an effective amount of a crosslinking catalyst.
Claim 3
Dependent Claim
32 words
A thermally conductive fuser member according to Claim I in which said base (11) is a metallic roll, and in which said thin layer (12) is about 0.0254 to 0.254 cm. thick.
Claim 4
Dependent Claim
32 words
A thermally conductive fuser member according to Claim 2 in which said metallic roll (ll) is madeof aluminum, and in which said thin layer (12) is about 0.0762 to 0.2032 cm. thick.
Claim 5
Dependent Claim
22 words
A thermally conductive fuser member according to Claim 3 in which said thin layer (12) is about 0.1524 to 0.1778 cm. thick.
Claim 6
Dependent Claim
66 words
A thermally conductive fuser member according to Claim 1, 2, or 3 or 4, in which said alpha, omega-hydroxypolydimethylsiloxane has a number average molecular weight between about 5,000 and 20,000, in which said crosslinking agent is about 6 to 9 parts by weight of condensed tetraethylorthosilicate, and in which said crosslinking catalyst is about 0.25 to 1.8 parts by weight of dibutyltin dilaurate or bis(dibutylchlorotin) oxide.
Claim 7
Dependent Claim
78 words
6 . A thermally conductive fuser member according to Claim 5, in which tabular alumina is present in an amount about 189 - 233 parts by weight, in which said iron oxide is present in an amount about 13 - 28 parts by weight, in which said condensed tetraethylorthosilicate is present in an amount about 6.6 to 8 parts by weight, and in which said catalyst is present in an amount about 0.25 to 0.75 parts by weight.
Claim 8
Dependent Claim
69 words
A thermally conductive fuser member according to Claim 6, in which said tabular alumina is present in an amount about 189 parts by weight, in which said iron oxide is present in an amount about 28 parts by weight, in which said condensed tetraethylorthosilicate is present in an amount about 7.5 parts by weight, and in which said catalyst is present in an amount about 0.5 parts by weight.
Claim 9
Dependent Claim
42 words
8 . A thermally conductive fuser member according to any preceding claim, in which said tabular alumina is about 325 mesh in size, and in which said iron oxide particles have a number average particle size of about less than 1 micrometer.
References Cited (Backward Citations)
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