JPH01310378A - Fixing unit for electrophotographic printer - Google Patents
Fixing unit for electrophotographic printerInfo
- Publication number
- JPH01310378A JPH01310378A JP14248688A JP14248688A JPH01310378A JP H01310378 A JPH01310378 A JP H01310378A JP 14248688 A JP14248688 A JP 14248688A JP 14248688 A JP14248688 A JP 14248688A JP H01310378 A JPH01310378 A JP H01310378A
- Authority
- JP
- Japan
- Prior art keywords
- heating roller
- heating
- roller
- filament
- electrophotographic printer
- 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 39
- 238000005485 electric heating Methods 0.000 claims abstract description 6
- 230000007423 decrease Effects 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 239000010955 niobium Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241001517013 Calidris pugnax Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 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
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229910052702 rhenium Inorganic materials 0.000 description 1
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Landscapes
- Fixing For Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は電子写真式プリンタの定着器に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a fuser for an electrophotographic printer.
電子写真式プリンタの定着器は第３図に示すように熱源
６を内蔵する加熱ローラ５と、該加熱ローラ５に用紙１
０上の未定着（ｉ［ｏａを加圧圧着させる加圧ローラ７
とからなり、現像プロセスを経て搬入された用紙１０を
ガイド８に沿ってローラ５と７どの間に誘導し、加圧ロ
ーラフにより用紙１０を加熱ローラ５の周面に加圧圧着
させてその未定着（＄１１０ａを加熱ローラ５にて加熱
溶融しつつ定着を行い、定着剤の用紙１０をローラ５と
７との回転に件ってガイド９上に排紙する構造になって
いる。As shown in FIG. 3, the fixing device of an electrophotographic printer includes a heating roller 5 having a built-in heat source 6, and a sheet 1 attached to the heating roller 5.
0 unfixed (i[pressure roller 7 that presses and presses oa
The paper 10 carried in after the development process is guided between the rollers 5 and 7 along the guide 8, and the paper 10 is pressed against the circumferential surface of the heating roller 5 by a pressure roller ruff, and its undetermined state is The structure is such that the fixing agent ($110a) is heated and melted by the heating roller 5 to perform fixing, and the fixing agent paper 10 is discharged onto the guide 9 as the rollers 5 and 7 rotate.
ところで、従来熱源６を加熱ローラ５に内蔵するにあた
っては、第２図に示すように、加熱ローラ５を両端開口
の筒状構造とし、その内部に発熱器４を挿通させて内蔵
していた。By the way, conventionally, when the heat source 6 was built into the heating roller 5, the heating roller 5 was formed into a cylindrical structure with openings at both ends, and the heat generator 4 was inserted and built into the cylindrical structure, as shown in FIG.
上述した従来の定着器は、加熱ローラ５と、内蔵する発
熱器４とが別々に単独で存在するので、それぞれ別の保
持部を設けなければならないという欠点があった。また
、加熱ローラ５がパイプ形状をして両端に開口部をもっ
ていたため、空気の流れによって加熱ローラ５の中が温
度低下してしまうという欠点があり、それを解決するた
めには、別に加熱ローラ５の開口部を閉じる蓋を設けな
ければならないという欠点があった。さらに、加熱ロー
ラと、発熱器との専用の保持部を必要とするため、部品
点数が多く、組立てが容易でないという欠点かあった。The above-described conventional fixing device has the drawback that the heating roller 5 and the built-in heat generating device 4 exist separately and independently, and therefore separate holding sections must be provided for each. In addition, since the heating roller 5 is pipe-shaped and has openings at both ends, there is a drawback that the temperature inside the heating roller 5 decreases due to the flow of air. There was a drawback that a lid had to be provided to close the opening of No. 5. Furthermore, since it requires dedicated holding parts for the heating roller and the heat generator, it has the disadvantage that it requires a large number of parts and is not easy to assemble.
本発明の目的は前記課題を解決した電子写真式プリンタ
の定着器を提供することにある。An object of the present invention is to provide a fixing device for an electrophotographic printer that solves the above problems.
前記目的を達成するため、本発明は熱源を内蔵する加熱
ローラと、該加熱ローラに用紙上の未定着像を加圧圧着
させる加圧ローラとを有する電子写真式プリンタの定着
器において、加熱ローラを中空構造の密閉容器として構
成し、該加熱ローラ内に電気発熱体であるフィラメント
を一体に組み込んだものである。To achieve the above object, the present invention provides a fixing device for an electrophotographic printer that includes a heating roller having a built-in heat source and a pressure roller that presses and presses an unfixed image on a sheet of paper to the heating roller. The heating roller is constructed as a closed container with a hollow structure, and a filament as an electric heating element is integrated into the heating roller.
以下、本発明の一実施例を図により説明する。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
第１図は本発明の一実施例を示す断面図である。FIG. 1 is a sectional view showing one embodiment of the present invention.
図において、加圧ローラ（第３図参照）と対をなす加熱
ローラ１を中空円筒状の密閉容器として楕成し、該加熱
ローラ１の両側蓋部１ａ、ｌａに電極２ａ、２ａを設け
、該電極２ａ、２ａ間に電気発熱体であるフィラメント
２を張設し、加熱ローラ１の内部に不活性ガスを充填し
、フィラメント２を加熱ローラ１内に一体に組込む、尚
、フィラメント２としては、タングステン（Ｗ）、オス
ミウム（Ｏｓ）、タンタラム（Ｔａ）、モリブデン（Ｍ
ｏ）、ニオビウム（Ｎｂ）、ジルコニウム（Ｚｒ）、白
金（ｐｔ）、炭素（Ｃ）または前述したいずれかの物質
を主材料とし、アルミナ（Ａ！１１２０ｓ ）またはド
リア（Ｔｈ０２ ）またはコバルト（Ｃｏ）またはレニ
ウム（Ｒｅ）またはガリウム（Ｇａ）または他の物質を
添加した合金によって作られた素材のものを用途に応じ
て選択して用いる。In the figure, a heating roller 1 paired with a pressure roller (see FIG. 3) is shaped like a hollow cylindrical sealed container, and electrodes 2a, 2a are provided on both side lids 1a, la of the heating roller 1. A filament 2, which is an electric heating element, is stretched between the electrodes 2a, 2a, the inside of the heating roller 1 is filled with inert gas, and the filament 2 is integrated into the heating roller 1. , tungsten (W), osmium (Os), tantalum (Ta), molybdenum (M
o) The main material is niobium (Nb), zirconium (Zr), platinum (pt), carbon (C) or any of the above-mentioned substances, and the main material is alumina (A!1120s), doria (Th02) or cobalt (Co). Alternatively, a material made of an alloy to which rhenium (Re), gallium (Ga), or other substances are added is selected and used depending on the purpose.
またフィラメント２とともに不活性ガスとハロゲンを封
入してもよい。Further, an inert gas and a halogen may be sealed together with the filament 2.
以上説明したように本発明は、加熱ローラの中に電気発
熱体であるフィラメントを封入し、−本化することによ
り、構造を簡素化できるとともに、加熱ローラと発熱体
との保持部を共用することかでき、部品点数を少なくす
ることができるとともに組立てを容易に行うことができ
るという効果がある。また、フィラメント封入構造とす
ることにより、加熱ローラが密閉され、空気の流れによ
る加熱ローラ内部の温度低下を防ぐことができるという
効果がある。As explained above, the present invention simplifies the structure by enclosing a filament, which is an electric heating element, in the heating roller and making it a main body, and also allows the heating roller and the heating element to share a holding part. This has the advantage that the number of parts can be reduced and assembly can be performed easily. Further, by adopting the filament-enclosed structure, the heating roller is sealed, and there is an effect that the temperature inside the heating roller can be prevented from decreasing due to air flow.
第１図は本発明の一実施例を示す断面図、第２図は従来
の定着器の加熱ローラを示す断面図、第３図は定着器の
概略を示す側面図である。
１・・・加熱ローラ ２・・・フィラメント菓２
図FIG. 1 is a sectional view showing an embodiment of the present invention, FIG. 2 is a sectional view showing a heating roller of a conventional fixing device, and FIG. 3 is a side view schematically showing the fixing device. 1... Heating roller 2... Filament confectionery 2
figure
Claims (1)
紙上の未定着像を加圧圧着させる加圧ローラとを有する
電子写真式プリンタの定着器において、加熱ローラを中
空構造の密閉容器として構成し、該加熱ローラ内に電気
発熱体であるフィラメントを一体に組み込んだことを特
徴とする電子写真式プリンタの定着器。(1) In a fixing device for an electrophotographic printer that has a heating roller with a built-in heat source and a pressure roller that presses and presses an unfixed image on paper to the heating roller, the heating roller is used as a hollow sealed container. 1. A fixing device for an electrophotographic printer, characterized in that a filament, which is an electric heating element, is integrally built into the heating roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14248688A JPH01310378A (en) | 1988-06-09 | 1988-06-09 | Fixing unit for electrophotographic printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14248688A JPH01310378A (en) | 1988-06-09 | 1988-06-09 | Fixing unit for electrophotographic printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01310378A true JPH01310378A (en) | 1989-12-14 |
Family
ID=15316441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14248688A Pending JPH01310378A (en) | 1988-06-09 | 1988-06-09 | Fixing unit for electrophotographic printer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01310378A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08305196A (en) * | 1995-04-28 | 1996-11-22 | Nec Corp | Image fixing device for electrophotographic image forming device |
| JPH0980950A (en) * | 1995-09-11 | 1997-03-28 | Nec Corp | Fixing unit |
-
1988
- 1988-06-09 JP JP14248688A patent/JPH01310378A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08305196A (en) * | 1995-04-28 | 1996-11-22 | Nec Corp | Image fixing device for electrophotographic image forming device |
| JPH0980950A (en) * | 1995-09-11 | 1997-03-28 | Nec Corp | Fixing unit |
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