US3595539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal apparatus for fixing thermoplastic resinous power
Assignee: Iwatsu Electric Co Ltd
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Filing: 1970-01-12
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Granted: 1971-07-27
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Expires: 1990-01-12
Abstract
Abstract A thermal apparatus for fixing thermoplastic resinous powder which has an improved heating surface whereon numerous specifically patterned and arranged fine recesses and protuberances are formed. The specific recesses and protuberances are very effective for eliminating accidental transfer of a resinous layer, to be fixed on an article''s surface, onto the heating surface. The thermal fixing apparatus is useful for electrophotography, electrostatic printing, powder-painting, powder-photogravure and powder-screen printing.
Inventors
- 👤 Shinichi Isigaki
- 👤 Takuhei Kimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:15
CPC Classifications
B; B05; B05D; B05D3/00; B05D3/02; B05D3/0254; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/24; B29C65/30; B29C65/305; B29C65/48; B29C65/4805; B29C65/481; B29C65/4815; B29C65/486; G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2053; B29C65/4865; B29C65/487; B29C65/4875
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
28 words
A thermal fixing apparatus as claimed in claim 1, wherein said values A, B and C are defined in a range from 10 to 300 Mu , respectively.
Claim 2
Dependent Claim
24 words
A thermal fixing apparatus as claimed in claim 1, wherein said heating surface is formed on a peripheral surface of a rotatable heating roller.
Claim 3
Dependent Claim
35 words
A thermal fixing apparatus as claimed in claim 1, wherein said heating surface is intimately contacted with the surface of a base sheet article so as to fuse and fix thereon said thermoplastic resinous powder.
Claim 4
Dependent Claim
34 words
A thermal fixing apparatus as claimed in claim 4, wherein said base sheet article is passed between a heating and pressing roller rotating at substantially the same rotational speed in a mutually contacting arrangement.
Claim 5
Dependent Claim
23 words
A thermal fixing apparatus as claimed in claim 1, wherein the protuberances are of a substantially round, square or diamond lateral cross-sectional profile.
Claim 6
Dependent Claim
20 words
A thermal fixing apparatus as claimed in claim 1, wherein the recesses are substantially square or round lateral cross-sectional profile.
Claim 7
Dependent Claim
30 words
A thermal fixing apparatus as claimed in claim 4 wherein said base article sheet is processed through the thermal fixing apparatus at a temperature between about 110* and 280* C.
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) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |