JPH07219372A - Fixing device - Google Patents
Fixing deviceInfo
- Publication number
- JPH07219372A JPH07219372A JP1191394A JP1191394A JPH07219372A JP H07219372 A JPH07219372 A JP H07219372A JP 1191394 A JP1191394 A JP 1191394A JP 1191394 A JP1191394 A JP 1191394A JP H07219372 A JPH07219372 A JP H07219372A
- Authority
- JP
- Japan
- Prior art keywords
- heating roller
- electrode layers
- heat generating
- roller
- generating layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 35
- 239000004519 grease Substances 0.000 claims abstract description 23
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 abstract description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 239000012811 non-conductive material Substances 0.000 abstract description 2
- 239000000843 powder Substances 0.000 abstract description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 abstract description 2
- 229910010271 silicon carbide Inorganic materials 0.000 abstract description 2
- 229910010293 ceramic material Inorganic materials 0.000 abstract 1
- 238000007751 thermal spraying Methods 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920001800 Shellac Polymers 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- ZLGIYFNHBLSMPS-ATJNOEHPSA-N shellac Chemical compound OCCCCCC(O)C(O)CCCCCCCC(O)=O.C1C23[C@H](C(O)=O)CCC2[C@](C)(CO)[C@@H]1C(C(O)=O)=C[C@@H]3O ZLGIYFNHBLSMPS-ATJNOEHPSA-N 0.000 description 1
- 229940113147 shellac Drugs 0.000 description 1
- 235000013874 shellac Nutrition 0.000 description 1
- 239000004208 shellac Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Landscapes
- Fixing For Electrophotography (AREA)
- Control Of Resistance Heating (AREA)
- Resistance Heating (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は電子写真方式の記録装置
に用いる定着装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing device used in an electrophotographic recording device.
【０００２】[0002]
【従来の技術】レーザープリンター、ＬＥＤプリンター
等の電子写真方式の記録装置に於ては、光導電現象を利
用して感光ドラム上に静電潜像を形成し、この静電潜像
をトナーを用いて現像してトナー像とした後、トナー像
を普通紙等の記録媒体に転写した後、定着器により定着
している。2. Description of the Related Art In an electrophotographic recording device such as a laser printer or an LED printer, an electrostatic latent image is formed on a photosensitive drum by utilizing a photoconductive phenomenon, and the electrostatic latent image is transferred to a toner. The toner image is developed by using the toner image, transferred to a recording medium such as plain paper, and then fixed by a fixing device.
【０００３】そこで上記定着器には、例えば特開昭６２
−１８５８０号公報にて示される様に、加熱ローラ自身
に発熱層を設け、この発熱層によりローラの表面を直接
加熱することで、所謂ウォームアップ時間の短縮を計る
ものがあるが、この場合加熱ローラが回転する為に集電
軸受を用いて上記発熱層に外部から給電している。Therefore, in the fixing device, for example, Japanese Patent Laid-Open No. Sho 62-62 is used.
As disclosed in Japanese Patent No. 18580, a heating roller itself is provided with a heat generating layer and the surface of the roller is directly heated by the heat generating layer to shorten the so-called warm-up time. Since the roller rotates, power is externally supplied to the heat generating layer by using a current collecting bearing.
【０００４】又上記集電軸受には、耐久性等を考慮し
て、その材質に比較的高価な黒鉛等を用いている。Further, in consideration of durability and the like, the current collecting bearing uses relatively expensive graphite or the like as its material.
【０００５】[0005]
【発明が解決しようとする課題】その為に、上記軸受部
分のコストが高価に成ると共に、集電軸受が摩耗してロ
ーラが偏心運動を生じるという問題がある。Therefore, there is a problem that the cost of the above-mentioned bearing portion becomes high and the current collecting bearing is worn to cause eccentric movement of the roller.
【０００６】そこで本発明は、加熱ローラ自身に発熱層
を設けたものにおいて、この発熱層への給電を比較的安
価な構成にて行う事を目的とする。In view of the above, the present invention has an object of providing a heating layer on the heating roller itself and supplying power to the heating layer with a relatively inexpensive structure.
【０００７】[0007]
【課題を解決するための手段】本発明は、円筒状の加熱
ローラに導電性セラミック等の発熱層を設けると共に、
加熱ローラの両端部に電極層を設け、これら電極層に導
電グリスを介して給電する給電端子を接続して成るもの
である。The present invention provides a cylindrical heating roller with a heating layer such as a conductive ceramic, and
Electrode layers are provided at both ends of the heating roller, and power supply terminals for supplying power are connected to these electrode layers through conductive grease.
【０００８】又本発明は、電極層を加熱ローラの両端部
外周面に設けると共に、給電端子を、加熱ローラの電極
層又はその近接位置に接触する少なくとも一対のＯリン
グの間に、電極層と接触状態にて導電グリスを収納する
グリス溝を形成した非導電性のブラケットと、このブラ
ケットに装着され、かつグリス溝内の導電グリスと電気
的に接続された給電用端子とから構成して成るものであ
る。According to the present invention, the electrode layer is provided on the outer peripheral surfaces of both ends of the heating roller, and the power supply terminal is provided between the electrode layer of the heating roller and at least a pair of O-rings in contact with the electrode layer. It is composed of a non-conductive bracket formed with a grease groove for accommodating conductive grease in a contact state, and a power supply terminal mounted on the bracket and electrically connected to the conductive grease in the grease groove. It is a thing.
【０００９】[0009]
【作用】定着時には、給電端子−導電グリス−電極層を
介して発熱層に通電し、加熱ローラを所定温度に加熱し
て定着を行うことで、比較的簡単な構成にて加熱ローラ
自身に設けた発熱層に給電を行う事が出来る。When fixing, the heating layer is energized through the power supply terminal, the conductive grease, and the electrode layer, and the heating roller is heated to a predetermined temperature to perform fixing, so that the heating roller itself is provided with a relatively simple structure. Power can be supplied to the heating layer.
【００１０】[0010]
【実施例】本発明による実施例を先ず図１に基づき説明
すると、(１)はプリンタ本体で、その外装ケース(２)内
に、給紙装置(３)、現像装置(４)、定着装置(５)を順次
配置している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described first with reference to FIG. 1. (1) is a printer main body, and a paper feed device (3), a developing device (4), a fixing device in an outer case (2) thereof. (5) are arranged sequentially.
【００１１】一方上記定着装置(５)は、図２にて示す様
に例えば図示しない発熱抵抗層を形成、或いは炭化ケイ
素、アルミナ、ジルコニア等のセラック材料の中に導電
性金属粉を混入してパイプ状に成形する等により発熱層
(６)を設けた円筒状の加熱ローラ(７)にバックアップロ
ーラ(８)を対向位置して成り、上記現像装置(４)により
トナーを転写された用紙を、加熱ローラ(７)とバックア
ップローラ(８)との間に給紙することで、これらのロー
ラにて加熱定着する。On the other hand, in the fixing device (5), a heating resistance layer (not shown) is formed as shown in FIG. 2, or a conductive metal powder is mixed in a shellac material such as silicon carbide, alumina, zirconia or the like. Heat generation layer by forming into a pipe
The backup roller (8) is positioned opposite to the cylindrical heating roller (7) provided with (6), and the paper on which the toner has been transferred by the developing device (4) is heated by the heating roller (7) and the backup roller. By feeding the paper between (8) and (8), heat fixing is performed by these rollers.
【００１２】又上記加熱ローラ(７)は、その両端部に上
記発熱層(６)に電気的に接続されたアルミ容射等による
電極層(９)(９)を形成していると共に、この電極層より
も内側を、例えばボールベアリングを用いた軸受(10)(1
0)にて回転自在に支持している。Further, the heating roller (7) has electrode layers (9) and (9) formed by aluminum spraying or the like electrically connected to the heat generating layer (6) at both ends thereof. Bearings (10) (1)
It is rotatably supported at 0).
【００１３】(11)(11)は上記加熱ローラ(７)の電極層
(９)(９)部の周囲に嵌着した樹脂等の非導電性材料から
成るブラケットで、図３にても示す様に、上記電極層
(９)(９)の外周面の軸方向に各々少なくとも一対のＯリ
ング(12)(12)(12)(12)を並設して収納するリング溝(13)
(13)(13)(13)と、これらリング溝間に導電性の導電グリ
ス(14)(14)を収納するグリス溝(15)(15)とを形成してい
ると共に、上記導電グリス(14)(14)と電気的に接続され
る導電性材料から成る給電用端子(16)(16)を装着し、こ
れらにて給電端子を構成している。(11) (11) is an electrode layer of the heating roller (7)
(9) A bracket made of a non-conductive material such as resin, which is fitted around the portion (9), as shown in FIG.
(9) A ring groove (13) for accommodating at least a pair of O-rings (12), (12), (12) and (12) arranged side by side in the axial direction of the outer peripheral surface of (9).
(13) (13) (13) and the conductive grooves (15) and (15) for accommodating the electrically conductive grease (14) (14) between these ring grooves are formed, and the conductive grease ( Power supply terminals (16) and (16) made of a conductive material that are electrically connected to the power supply terminals (14) and (14) are mounted, and these power supply terminals are configured.
【００１４】尚上記導電グリス(14)(14)としては、例え
ば関東化成工業株式会社が開発したＧＥ−６７６，１２
００Ｎ等が知られており、前者の耐熱温度が−１５〜１
７０℃、後者の耐熱温度が−４０〜２００℃で、一般的
な定着温度の１５０〜１８０℃に対応できる。The conductive grease (14) (14) is, for example, GE-676,12 developed by Kanto Kasei Kogyo Co., Ltd.
00N is known, and the heat resistance temperature of the former is -15 to 1
70 [deg.] C., the heat resistant temperature of the latter is -40 to 200 [deg.] C., and it can correspond to a general fixing temperature of 150 to 180 [deg.] C.
【００１５】又上記給電用端子(16)(16)には直流電源(1
7)(17)を接続している。A DC power source (1
7) (17) is connected.
【００１６】而して、定着時には上記直流電源(17)(17)
より、給電用端子(16)(16)−導電グリス(14)(14)−電極
層(９)(９)を介して発熱層(６)に通電し、この発熱層に
より加熱ローラ(７)を所定温度に加熱する。Thus, at the time of fixing, the above DC power source (17) (17)
As a result, the heating layer (6) is energized via the power supply terminals (16) (16) -conductive grease (14) (14) -electrode layers (9) (9), and the heating roller (7) is driven by this heating layer. Is heated to a predetermined temperature.
【００１７】又、上記加熱ローラ(７)が所定温度に加熱
されれば、給紙装置(３)、現像装置(４)を作動して加熱
ローラ(７)とバックアップローラ(８)との間に用紙を給
紙し、これらのローラにて加熱定着を行う。When the heating roller (7) is heated to a predetermined temperature, the paper feeding device (3) and the developing device (4) are operated to cause a gap between the heating roller (7) and the backup roller (8). The paper is fed to and heated and fixed by these rollers.
【００１８】[0018]
【発明の効果】本発明による構成により、加熱ローラ自
身に発熱層を設けたものにおいて、この発熱層に導電グ
リスを介して給電することで、従来のカーボンブラシ等
を用いて給電するものに比較して電気的ノイズの発生を
低減出来ると共に、給電部分の摩耗を低減出来、耐久性
能を大幅に向上する事が出来る。According to the present invention, the heating roller itself is provided with a heat-generating layer, and the heat-generating layer is fed with electric power through the conductive grease, so that a conventional carbon brush or the like is used. As a result, it is possible to reduce the occurrence of electrical noise, reduce the wear of the power feeding portion, and significantly improve the durability performance.
【図１】本発明による定着装置を用いたプリンターの概
略構成図である。FIG. 1 is a schematic configuration diagram of a printer using a fixing device according to the present invention.
【図２】本発明の実施例を示す要部の正面図である。FIG. 2 is a front view of a main part showing an embodiment of the present invention.
【図３】同じく要部の拡大正面図である。FIG. 3 is also an enlarged front view of the main part.
６ 発熱層 ７ 加熱ローラ ９ 電極層 12 Ｏリング 11 ブラケット 14 導電グリス 15 グリス溝 16 給電用端子 6 Heating layer 7 Heating roller 9 Electrode layer 12 O-ring 11 Bracket 14 Conductive grease 15 Grease groove 16 Power supply terminal
Claims (2)
等の発熱層を設けると共に、上記加熱ローラの両端部に
電極層を設け、これら電極層に導電グリスを介して給電
する給電端子を接続して成る定着装置。1. A cylindrical heating roller is provided with a heat generating layer such as a conductive ceramic, electrode layers are provided at both ends of the heating roller, and a feeding terminal for feeding power is connected to these electrode layers through conductive grease. Fixing device.
に設けると共に、上記給電端子を、上記加熱ローラの電
極層又はその近接位置に接触する少なくとも一対のＯリ
ングの間に、上記電極層と接触状態にて上記導電グリス
を収納するグリス溝を形成した非導電性のブラケット
と、このブラケットに装着され、かつ上記グリス溝内の
導電グリスと電気的に接続された給電用端子とから構成
して成る、上記請求項１に記載の定着装置。2. The electrode layer is provided on the outer peripheral surfaces of both ends of the heating roller, and the power supply terminal is provided between at least a pair of O-rings which are in contact with the electrode layer of the heating roller or a position close to the electrode layer. A non-conductive bracket having a grease groove formed therein for accommodating the conductive grease in a contact state with the conductive grease, and a power supply terminal mounted on the bracket and electrically connected to the conductive grease in the grease groove. The fixing device according to claim 1, wherein the fixing device comprises:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1191394A JPH07219372A (en) | 1994-02-03 | 1994-02-03 | Fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1191394A JPH07219372A (en) | 1994-02-03 | 1994-02-03 | Fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07219372A true JPH07219372A (en) | 1995-08-18 |
Family
ID=11790956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1191394A Pending JPH07219372A (en) | 1994-02-03 | 1994-02-03 | Fixing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07219372A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001125410A (en) * | 1999-10-29 | 2001-05-11 | Konica Corp | Fixing device |
| CN115469520A (en) * | 2022-10-20 | 2022-12-13 | 上海汉图科技有限公司 | Fixing device and image forming equipment |
-
1994
- 1994-02-03 JP JP1191394A patent/JPH07219372A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001125410A (en) * | 1999-10-29 | 2001-05-11 | Konica Corp | Fixing device |
| CN115469520A (en) * | 2022-10-20 | 2022-12-13 | 上海汉图科技有限公司 | Fixing device and image forming equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5407951B2 (en) | Fixing apparatus and image forming apparatus | |
| US4813372A (en) | Toner image fixing apparatus | |
| JP4998597B2 (en) | Fixing apparatus and image forming apparatus | |
| JP5104905B2 (en) | Fixing apparatus and image forming apparatus | |
| JP5708596B2 (en) | Fixing apparatus and image forming apparatus | |
| US4714819A (en) | Directly heating fixing apparatus having current collecting bearings | |
| EP1055978A2 (en) | Roller-shaped heater and fusing unit using a roller-shaped heater | |
| JP3472043B2 (en) | Image heating device and image forming device | |
| JPH06258974A (en) | Thermal fixing device | |
| JP2009251132A (en) | Fixing apparatus and image forming apparatus provided with the same | |
| JPH1079285A (en) | Heating equipment | |
| JP2011191648A (en) | Fixing device and image forming apparatus | |
| JPH07219373A (en) | Fixing device | |
| JPH0863023A (en) | Fixing device | |
| JPH10199658A (en) | Heating roller | |
| JPH07140822A (en) | Fixing device | |
| JPH0219879A (en) | Structure for conducting electricity to thermal fixing roll | |
| JPS59189381A (en) | Heat fixing device of copying machine | |
| JP3032041B2 (en) | Heat fuser | |
| JPH06250548A (en) | Heating fixing device | |
| JP5831188B2 (en) | Image forming apparatus | |
| JPH09127817A (en) | Fixing device | |
| JPH06250550A (en) | Heating fixing device | |
| JPH07129010A (en) | Heat fixing device | |
| JPH0722687Y2 (en) | Heat roller in fixing device |