Patent EP0283604A2 successfully refreshed from Google Patents.
EP0283604A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Process for fabricating a belt
Assignee: Xerox Corp
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Filing: 1987-03-24
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Granted: —
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Expires: 2007-03-24
Abstract
Abstract A process is disclosed for forming at least one thin substantially uniform fluid coating comprising polymeric film forming material on a cylindrical mandrel, solidifying the fluid coating to form a uniform solid coating and separating the uniform solid coating from the mandrel. The process may comprise forming at least one thin substantially uniform fluid coating comprising polymeric film forming material around a cylindrical mandrel, the mandrel having a larger mass or lower thermal conductivity than the polymeric film forming material and a critical surface tension greater than the surface tension of the fluid coating, solidifying the fluid coating to form at least one thin substantially uniform solid coating comprising the polymeric film forming material around the cylindrical mandrel, heating both the uniform solid coating and the mandrel to a temperature at least above the apparent T g of the solid coating to expand the coating and the mandrel while maintaining contact between the coating and the mandrel, cooling the coating to below the apparent T g of the solid coating prior to substantial cooling of the mandrel, and cooling the mandrel whereby the mandrel contracts a greater rate than the polymeric coating until separation occurs between the mandrel and the coating and removing the coating from the mandrel.
Inventors
- 👤 Donald Stanley Sypula
- 👤 Merlin Emil Scharfe
- 👤 Dennis Alan Abramsohn
- 👤 Paul Joseph Brach
- 👤 Clifford Henry Griffiths
- 👤 Deborah Jo Nichol-Landry
- 👤 Andrew Rostyslaw Melnyk
- 👤 John Walter Spiewak
- 👤 Joseph Mammino
- 👤 Edward Carl Williams
- 👤 Lieng-Huang Lee
- 👤 Christine J. Tarnawskyj
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 21:44
CPC Classifications
B; B29; B29C; B29C37/00; B29C37/0003; B29C41/00; B29C41/02; B29C41/08; B29C41/085; B29C41/34; B29C41/42; B29C41/46; B29D; B29D29/00; B29K; B29K2105/00; B29K2105/0058; B29K2105/0073; B29L; B29L2009/00; B29L2031/00; B29L2031/709; B29L2031/764; Y; Y10; Y10S; Y10S264/00; Y10S264/72
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
57 words
A process for fabricating a thin, flexible, seamless belt comprising forming at least one thin substantially uniform fluid coating comprising film forming polymer material around a cylindrical mandrel, solidifying said fluid coating to form a uniform solid coating around said cylindrical mandrel, and removing said uniform solid coating as a thin, flexible, seamless belt from said mandrel.
Claim 2
Dependent Claim
57 words
A process for fabricating a thin, flexible, seamless belt comprising forming at least one thin substantially uniform fluid coating comprising film forming polymer material around a cylindrical mandrel, solidifying said fluid coating to form a uniform solid coating around said cylindrical mandrel, and removing said uniform solid coating as a thin, flexible, seamless belt from said mandrel.
Claim 3
Dependent Claim
69 words
A process for fabricating a thin, flexible, seamless belt according to Claim 1 including forming said thin substantially uniform fluid coating comprising said film forming polymer material around said cylindrical mandrel at a temperature below about 60°C, forming said said uniform solid coating at a temperature below about 60°C, heating said uniform solid coating to a temperature above about 130°C and cooling said uniform solid coating below about 130°C.
Claim 4
Dependent Claim
80 words
A process for fabricating a thin, flexible, seamless belt according to Claim 1 or Claim 2 wherein said thin substantially uniform fluid coating has a surface tension sufficiently less than the critical surface tension of said mandrel to form a uniform fluid coating on said mandrel and said uniform solid coating is substantially dry and has a critical surface tension greater than that the critical surface tension of said mandrel when said uniform solid coating is removed from said mandrel.
Claim 5
Dependent Claim
63 words
A process for fabricating a thin, flexible, seamless belt according to Claim 1 wherein said critical surface tension of said mandrel is at least 5 percent greater than the surface tension of said thin substantially uniform fluid coating and said uniform solid coating has a critical surface tension of at least about 10 percent greater than said critical surface tension of said mandrel.
Claim 6
Dependent Claim
140 words
A process for fabricating a thin, flexible, seamless belt according to Claim 1 wherein said mandrel has a larger mass, lower thermal conductivity, or larger mass the lower thermal conductivity than said film forming polymer material and a critical surface tension greater than the surface tension of said fluid coating, the process comprising heating both said uniform solid coating and said mandrel to a temperature at least above the apparent T g of said solid coating to expand said coating and said mandrel while maintaining contact between said coating and said mandrel, cooling said coating to a temperature below the apparent T g of said solid coating prior to substantial cooling of said mandrel, and cooling said mandrel whereby said mandrel contracts at a greater rate than said solid coating until separation occurs between said mandrel and said solid coating.
Claim 7
Dependent Claim
54 words
A process for fabricating a thin, flexible, seamless belt according to Claim 5 wherein said thin substantially uniform fluid coating comprises a film forming polymeric binder and a liquid carrier for said film forming polymer binder and said liquid carrier is removed from said fluid coating prior to removing said coating from said mandrel.
Claim 8
Dependent Claim
42 words
A process for fabricating a thin, flexible, seamless belt according to Claim 6 wherein the combination of said film forming polymer material and said liquid carrier have a lower surface tension than said film forming polymer material free of said liquid carrier.
Claim 9
Dependent Claim
31 words
A process for fabricating a thin, flexible, seamless belt according to any one of Claims 5 to 7 wherein said solid coating is cooled by rapid quenching in a cool fluid.
Claim 10
Dependent Claim
66 words
A process for fabricating a thin, flexible, seamless belt according to any one of Claims 5 to 8 including forming at least a second thin substantially uniform coating comprising film forming polymer material on said first thin substantially uniform solid coating, and solidifying said second fluid coating to form a second thin substantially uniform solid coating comprising said film forming polymer material on said first coating.
Claim 11
Dependent Claim
46 words
A process for fabricating a thin, flexible, seamless belt according to Claim 9 including repeating said coating forming and solidifying steps to form at least an electrically conductive coating, a charge generator coating and a charge transport coating prior to removing said coatings from said mandrel.
References Cited (Backward Citations)
No citation records indexed.
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