US4087676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fixing apparatus with heat and pressure for electrophotographic copiers
Assignee: Xerox Ltd
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Filing: 1977-02-08
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Granted: 1978-05-02
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Expires: 1997-02-08
Abstract
Abstract A fixing apparatus with heat and pressure for electrophotographic copiers, the apparatus comprising a first roll 1, with which a toner image 11 on a paper 10 to be fixed comes into contact, and a second roll 2 placed in pressure contact with said first roll for rotation, said paper 10 passing between both the rolls 1 and 2, characterized in that a heat generating source 3b is provided at least in the second roll 2, a resilient material 5 having a heat-resistant releasing property is coated on the surface of the first roll 1, the surface of the second roll 2 being formed into a metal surface, and a releasing agent 7 containing a functional group is supplied to at least the surface of the second roll 2.
Inventors
- 👤 Yasuji Fukase
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:37
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2017; G03G15/2025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
Apparatus for fixing toner images to copy substrates, said apparatus comprising: a first roll including an elastomeric outer layer; a second roll contacting said first roll and cooperating therewith to form a nip through which said copy substrates pass with said toner images contacting said elastomeric outer layer; means supported internally of said first roll for elevating the surface temperature thereof; means disposed internally of said second roll for elevating the surface temperature thereof directly and indirectly serving to assist said means disposed internally of said first roll to thereby elevate the surface temperature of said first roll; said elastomeric layer comprising silicone rubber and said second roll being fabricated from metal; and means for applying a functional release agent fluid to the surface of said second roll and subsequently to said first roll through contact of said second roll with said first roll.
Claim 2
Dependent Claim
144 words
Apparatus for fixing toner images to copy substrates, said apparatus comprising: a first roll including an elastomeric outer layer; a second roll contacting said first roll and cooperating therewith to form a nip through which said copy substrates pass with said toner images contacting said elastomeric outer layer; means supported internally of said first roll for elevating the surface temperature thereof; means disposed internally of said second roll for elevating the surface temperature thereof directly and indirectly serving to assist said means disposed internally of said first roll to thereby elevate the surface temperature of said first roll; said elastomeric layer comprising silicone rubber and said second roll being fabricated from metal; and means for applying a functional release agent fluid to the surface of said second roll and subsequently to said first roll through contact of said second roll with said first 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) | 1981-05-01 | 1981-10-31 | 1982-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-01 | 1985-10-31 | 1986-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-01 | 1989-10-31 | 1990-05-02 | $7700.00 | Window Closed / Lapsed |