JPH0375774A - Fixing unit for electrophotographic printer - Google Patents

Fixing unit for electrophotographic printer

Info

Publication number
JPH0375774A
JPH0375774A JP21230889A JP21230889A JPH0375774A JP H0375774 A JPH0375774 A JP H0375774A JP 21230889 A JP21230889 A JP 21230889A JP 21230889 A JP21230889 A JP 21230889A JP H0375774 A JPH0375774 A JP H0375774A
Authority
JP
Japan
Prior art keywords
felt
width
roller
cleaning
heat roller
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
Application number
JP21230889A
Other languages
Japanese (ja)
Inventor
Kazuto Nakamura
和人 中村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Niigata Fuji Xerox Manufacturing Co Ltd
Original Assignee
Niigata Fuji Xerox Manufacturing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Niigata Fuji Xerox Manufacturing Co Ltd filed Critical Niigata Fuji Xerox Manufacturing Co Ltd
Priority to JP21230889A priority Critical patent/JPH0375774A/en
Publication of JPH0375774A publication Critical patent/JPH0375774A/en
Pending legal-status Critical Current

Links

Landscapes

  • Fixing For Electrophotography (AREA)

Abstract

PURPOSE:To reduce the cost of felt and to prolong its service life by making the width of the felt used for cleaning a heat roller or a pressure roller twice or more a toner attaching width and using both sides of the felt by means of turning over it. CONSTITUTION:The width of the felt 9 for cleaning the heat roller 1 or the pressure roller 2 is made twice or more the toner attaching width. Then, only the half of the wide felt 9 comes into contact with the rollers 1 and 2 to be held on an upper plate 5. If toner sticks to the contact surface of the rollers 1 and 2 with the felt 9 to lose the function of the felt, the felt 9 is turned over to use the surface which does not come into contact with the rollers 1 and 2. Accordingly, the service life of one felt 9 doubles at a lower cost than when two felts are used.

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し、特にロー
ラ清掃用のフェルトに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a fuser for an electrophotographic printer, and more particularly to a felt for cleaning rollers.

〔従来の技術〕[Conventional technology]

従来、この種の定着器のローラ清掃用のフェルトの幅は
トナーの付着幅と同じ程度となっていた。Conventionally, the width of the felt for cleaning the roller of this type of fixing device has been approximately the same as the toner adhesion width.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

上述した従来のローラ清掃用のフェルトの幅はトナー付
着幅と同じ程度となっているのでＡ４サイズ用紙５，０
００ペ一ジ程度で使い捨てるという欠点がある。The width of the felt for conventional roller cleaning mentioned above is about the same as the toner adhesion width, so A4 size paper 5.0
The disadvantage is that it is disposable after only 100 pages.

〔課題を解決するための手段〕[Means to solve the problem]

本発明の定着器は、熱ローラと、熱源と、加圧ローラと
、加圧ローラと熱ローラとを圧力接触させるためのバネ
と、熱ローラの温度を検知するための温度検知器と、ロ
ーラ清掃用のフェルトと、熱ローラ、温度検知器、加圧
ローラおよびフェルトを支持する支持体とを有している
。The fixing device of the present invention includes a heat roller, a heat source, a pressure roller, a spring for bringing the pressure roller and the heat roller into pressure contact, a temperature sensor for detecting the temperature of the heat roller, and a roller. It has a cleaning felt, a heat roller, a temperature sensor, a pressure roller, and a support for supporting the felt.

〔実施例〕〔Example〕

次に、本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.

第１図および第２図は本発明の一実施例を示す、熱ロー
ラ１は側板６に回転自在に支持され加圧ローラ２は支持
板７に回転自在に支持されている。支持板７は側板６に
設けられた軸１１を中心に回転自在に支持されている。1 and 2 show an embodiment of the present invention. A heat roller 1 is rotatably supported by a side plate 6, and a pressure roller 2 is rotatably supported by a support plate 7. FIG. The support plate 7 is rotatably supported around a shaft 11 provided on the side plate 6.

また側板６に設けられたフック１０と支持板７とをバネ
８でつり熱ローラ１に加圧ローラ２を圧力接触させる。Further, the hook 10 provided on the side plate 6 and the support plate 7 are suspended by a spring 8 to bring the pressure roller 2 into pressure contact with the heat roller 1.

温度検知器３は上板５に支持され熱ローラ１に接触して
熱ローラの温度を検出する。幅広のフェルト９は幅の半
分だけ熱ローラ１に接触して上板５に支持される。フェ
ルト９と熱ローラ１との接触面にトナーが付着してフェ
ルトの機能を果たさなくなったときは、フェルト９を反
転して熱ローラ１と接触していなかった面を使用する。The temperature detector 3 is supported by the upper plate 5 and comes into contact with the heat roller 1 to detect the temperature of the heat roller. The wide felt 9 is supported by the upper plate 5 with half of its width in contact with the heat roller 1. When toner adheres to the contact surface between the felt 9 and the heat roller 1 and the felt no longer functions, the felt 9 is reversed and the surface that was not in contact with the heat roller 1 is used.

清掃用フェルトとしては、従来と同様に離型剤が含浸さ
れたものをつかってもよい、また実施例は熱ローラ清掃
用のフェルトを示したが、加圧ローラ清掃用のフェルト
に同様の構造を用いてもよい 〔発明の効果〕 以上説明したように本発明は幅広のローラ清掃用フェル
トを反転する構成を有することにより従来のフェルト寿
命を１本のフェルトで２本以下の価格で２倍にできる効
果がある。As the cleaning felt, one impregnated with a mold release agent may be used in the same way as in the past.Also, although the embodiment shows a felt for cleaning a heat roller, a felt for cleaning a pressure roller with a similar structure may be used. [Effects of the Invention] As explained above, the present invention has a configuration in which the wide roller cleaning felt is reversed, thereby doubling the life of conventional felts at a cost of less than two felts with one felt. It has the effect of

１図の右側面を側板を外して見た側面図である。FIG. 1 is a side view of the right side of FIG. 1 with the side plate removed.

１・・・熱ローラ、２・・・加圧ローラ、３・・・温度
検知器、４・・・熱源、５・・・上板（３および９の支
持体）、６・・・側板〈１の支持体〉、７・・・支持板
（２の支持体）、８・・・バネ、９・・・ローラ清掃用
フェルト、１０・・・フック、１１・・・軸。DESCRIPTION OF SYMBOLS 1...Heat roller, 2...Pressure roller, 3...Temperature detector, 4...Heat source, 5...Upper plate (support body of 3 and 9), 6...Side plate< 1 support body>, 7... support plate (second support body), 8... spring, 9... roller cleaning felt, 10... hook, 11... shaft.

Claims (1)

【特許請求の範囲】[Claims] 熱ローラまたは加圧ローラ清掃用のフェルトの幅をトナ
ー付着幅の２倍以上としたことを特徴とする電子写真式
プリンタの定着器。A fixing device for an electrophotographic printer, characterized in that the width of felt for cleaning the heat roller or pressure roller is at least twice the width of toner adhesion.
JP21230889A 1989-08-18 1989-08-18 Fixing unit for electrophotographic printer Pending JPH0375774A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21230889A JPH0375774A (en) 1989-08-18 1989-08-18 Fixing unit for electrophotographic printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21230889A JPH0375774A (en) 1989-08-18 1989-08-18 Fixing unit for electrophotographic printer

Publications (1)

Publication Number Publication Date
JPH0375774A true JPH0375774A (en) 1991-03-29

Family

ID=16620413

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21230889A Pending JPH0375774A (en) 1989-08-18 1989-08-18 Fixing unit for electrophotographic printer

Country Status (1)

Country Link
JP (1) JPH0375774A (en)

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