Patent US6522846B2 successfully refreshed from Google Patents.
US6522846B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fixing device having connection member for supplying AC current to an electromagnetic induction coil
Assignee: Toshiba Corp
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Filing: 2001-08-28
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Granted: 2003-02-18
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Expires: 2021-08-28
Abstract
Abstract An electrophotographic fixing device allowing a flow of an AC current through an electromagnetic induction coil arranged close to a heating roller having a metal layer formed of a conductor and allowing the heat generation of the heating roller to heat a to-be-fixed members. The fixing device comprises a circuit board for outputting the AC current from an output terminal and passing the current through the electromagnetic induction coil. A connection plate having a thickness twice or more the current penetration depth and having one end side fixed by a fastening screw to the output terminal of the circuit board, and a male-side connection terminal provided on the other end of the plate metal. A female-side connection terminal provided at an end of a leader line of the electromagnetic induction coil is detachably connected to the male-side connection terminal.
Inventors
- 👤 Satoshi Kinouchi
- 👤 Osamu Takagi
- 👤 Kazuhiko Kikuchi
- 👤 Hisaaki Kawano
- 👤 Hiroshi Nakayama
- 👤 Kenji Takano
- 👤 Taizo Kimoto
- 👤 Noriyuki Umezawa
- 👤 Masahiko Ogura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:14
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2053
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
139 words
An electrophotographic fixing device allowing a flow of an AC current through an electromagnetic induction coil arranged close to an endless member having a metal layer formed of a conductor and allowing the heat generation of the endless member to heat a to-be-fixed material, comprising: a circuit board for outputting the current from an output terminal and passing the current through the electromagnetic induction coil; a conductive connection member having one end side fixed by a fastening means to the output terminal of the circuit board; a first connection terminal provided on the other end of the connection member; and a second connection terminal provided at a leader line end of the electromagnetic induction coil and detachably connected to the first connection terminal, wherein the connection member has its thickness made two times or more the current penetration depth.
Claim 2
Dependent Claim
139 words
An electrophotographic fixing device allowing a flow of an AC current through an electromagnetic induction coil arranged close to an endless member having a metal layer formed of a conductor and allowing the heat generation of the endless member to heat a to-be-fixed material, comprising: a circuit board for outputting the current from an output terminal and passing the current through the electromagnetic induction coil; a conductive connection member having one end side fixed by a fastening means to the output terminal of the circuit board; a first connection terminal provided on the other end of the connection member; and a second connection terminal provided at a leader line end of the electromagnetic induction coil and detachably connected to the first connection terminal, wherein the connection member has its thickness made two times or more the current penetration depth.
Claim 3
Dependent Claim
20 words
An electrophotographic fixing device according to claim 1 , wherein the connection member is comprised of a plate-like metal material.
Claim 4
Dependent Claim
18 words
An electrophotographic fixing device according to claim 1 , wherein the connection member is comprised of a harness.
Claim 5
Dependent Claim
19 words
An electrophotographic fixing device according to claim 1 , wherein the connection member is comprised of an electric wire.
Claim 6
Dependent Claim
23 words
An electrophotographic fixing device according to claim 1 , wherein the fastening means is comprised of a screw member fixed through a spring.
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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) | 2006-02-17 | 2006-08-19 | 2007-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-02-17 | 2010-08-19 | 2011-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-02-17 | 2014-08-19 | 2015-02-18 | $7700.00 | Window Closed / Lapsed |